Switching Block lanczos precision to explicitly single

Adding sample run script and input file

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -1,54 +0,0 @@
-name: Bug report
-description: Report a bug.
-title: "<insert title>"
-labels: [bug]
-
-body:
-  - type: markdown
-    attributes:
-      value: >
-        Thank you for taking the time to file a bug report.
-        Please check that the code is pointing to the HEAD of develop
-        or any commit in master which is tagged with a version number.
-
-  - type: textarea
-    attributes:
-      label: "Describe the issue:"
-      description: >
-        Describe the issue and any previous attempt to solve it.
-    validations:
-      required: true
-
-  - type: textarea
-    attributes:
-      label: "Code example:"
-      description: >
-        If relevant, show how to reproduce the issue using a minimal working
-        example.
-      placeholder: |
-        << your code here >>
-      render: shell
-    validations:
-      required: false
-
-  - type: textarea
-    attributes:
-      label: "Target platform:"
-      description: >
-        Give a description of the target platform (CPU, network, compiler).
-        Please give the full CPU part description, using for example
-        `cat /proc/cpuinfo | grep 'model name' | uniq` (Linux)
-        or `sysctl machdep.cpu.brand_string` (macOS) and the full output
-        the `--version` option of your compiler.
-    validations:
-      required: true
-
-  - type: textarea
-    attributes:
-      label: "Configure options:"
-      description: >
-        Please give the exact configure command used and attach
-        `config.log`, `grid.config.summary` and the output of `make V=1`.
-      render: shell
-    validations:
-      required: true

.gitignore

@@ -1,7 +1,3 @@
-# Doxygen stuff
-html/*
-latex/*
-
 # Compiled Object files #
 #########################
 *.slo
@@ -14,6 +10,8 @@ latex/*
 *~
 *#
 *.sublime-*
+.ctags
+tags
 
 # Precompiled Headers #
 #######################
@@ -92,7 +90,6 @@ Thumbs.db
 # build directory #
 ###################
 build*/*
-Documentation/_build
 
 # IDE related files #
 #####################

BLAS_benchmark/compile-command

@@ -1,2 +0,0 @@
-
-mpicxx -qmkl=parallel -fsycl BatchBlasBench.cc -o BatchBlasBench -DGRID_SYCL

BLAS_benchmark/compile-command-frontier

@@ -1,5 +0,0 @@
-CXX=hipcc
-MPICXX=mpicxx 
-CXXFLAGS="-fPIC -I{$ROCM_PATH}/include/ -I${MPICH_DIR}/include -L/lib64 -I/opt/cray/pe/mpich/8.1.28/ofi/gnu/12.3/include -DGRID_HIP"
-LDFLAGS="-L/lib64 -L${MPICH_DIR}/lib -lmpi -L${CRAY_MPICH_ROOTDIR}/gtl/lib -lmpi_gtl_hsa -lamdhip64 -lhipblas -lrocblas -lmpi_gnu_123"
-hipcc $CXXFLAGS $LDFLAGS BatchBlasBench.cc -o BatchBlasBench

BLAS_benchmark/compile-command-sunspot

@@ -1,2 +0,0 @@
-
-mpicxx -qmkl=parallel -fsycl BatchBlasBench.cc -o BatchBlasBench -DGRID_SYCL

Grid/DisableWarnings.h

@@ -44,24 +44,14 @@ directory
 #ifdef __NVCC__
  //disables nvcc specific warning in json.hpp
 #pragma clang diagnostic ignored "-Wdeprecated-register"
-
-#ifdef __NVCC_DIAG_PRAGMA_SUPPORT__
- //disables nvcc specific warning in json.hpp
-#pragma nv_diag_suppress unsigned_compare_with_zero
-#pragma nv_diag_suppress cast_to_qualified_type
- //disables nvcc specific warning in many files
-#pragma nv_diag_suppress esa_on_defaulted_function_ignored
-#pragma nv_diag_suppress declared_but_not_referenced
-#pragma nv_diag_suppress extra_semicolon
-#else
- //disables nvcc specific warning in json.hpp
 #pragma diag_suppress unsigned_compare_with_zero
 #pragma diag_suppress cast_to_qualified_type
-#pragma diag_suppress declared_but_not_referenced
+
  //disables nvcc specific warning in many files
 #pragma diag_suppress esa_on_defaulted_function_ignored
 #pragma diag_suppress extra_semicolon
-#endif
+
+//Eigen only
 #endif
 
 // Disable vectorisation in Eigen on the Power8/9 and PowerPC

Grid/GridCore.h

@@ -44,10 +44,9 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
 #include <Grid/GridStd.h>
 #include <Grid/threads/Pragmas.h>
 #include <Grid/perfmon/Timer.h>
-//#include <Grid/perfmon/PerfCount.h>
+#include <Grid/perfmon/PerfCount.h>
 #include <Grid/util/Util.h>
 #include <Grid/log/Log.h>
-#include <Grid/perfmon/Tracing.h>
 #include <Grid/allocator/Allocator.h>
 #include <Grid/simd/Simd.h>
 #include <Grid/threads/ThreadReduction.h>
@@ -59,7 +58,6 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
 #include <Grid/lattice/Lattice.h>      
 #include <Grid/cshift/Cshift.h>       
 #include <Grid/stencil/Stencil.h>      
-#include <Grid/stencil/GeneralLocalStencil.h>      
 #include <Grid/parallelIO/BinaryIO.h>
 #include <Grid/algorithms/Algorithms.h>   
 NAMESPACE_CHECK(GridCore)

Grid/GridQCDcore.h

@@ -36,7 +36,6 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
 #include <Grid/GridCore.h>
 #include <Grid/qcd/QCD.h>
 #include <Grid/qcd/spin/Spin.h>
-#include <Grid/qcd/gparity/Gparity.h>
 #include <Grid/qcd/utils/Utils.h>
 #include <Grid/qcd/representations/Representations.h>
 NAMESPACE_CHECK(GridQCDCore);

Grid/GridStd.h

@@ -1,17 +1,9 @@
 #ifndef GRID_STD_H
 #define GRID_STD_H
 
-///////////////////
-// Grid config
-///////////////////
-#include "Config.h"
-
 ///////////////////
 // Std C++ dependencies
 ///////////////////
-#define _NBACKTRACE (256)
-extern void * Grid_backtrace_buffer[_NBACKTRACE];
-
 #include <cassert>
 #include <complex>
 #include <memory>
@@ -23,46 +15,18 @@ extern void * Grid_backtrace_buffer[_NBACKTRACE];
 #include <random>
 #include <functional>
 #include <stdio.h>
-#include <string.h>
 #include <stdlib.h>
-#include <unistd.h>
-#include <strings.h>
 #include <stdio.h>
 #include <signal.h>
 #include <ctime>
 #include <sys/time.h>
 #include <chrono>
 #include <zlib.h>
-#ifdef HAVE_EXECINFO_H
-#include <execinfo.h>
-#endif
-
-void GridAbort(void);
-
-#define ASSLOG(A) ::write(STDERR_FILENO,A,::strlen(A));
-#ifdef HAVE_EXECINFO_H
-#define GRID_ASSERT(b) if(!(b)) {					\
-    fflush(stdout); \
-    ASSLOG(" GRID_ASSERT failure: ");					\
-    ASSLOG(__FILE__);							\
-    ASSLOG(" : ");							\
-    ASSLOG(#b);								\
-    ASSLOG(" : ");							\
-    int symbols = backtrace(Grid_backtrace_buffer,_NBACKTRACE);		\
-    backtrace_symbols_fd(Grid_backtrace_buffer,symbols,STDERR_FILENO);	\
-    GridAbort();							\
-  };
-#else
-#define GRID_ASSERT(b) if(!(b)) {					\
-    ASSLOG(" GRID_ASSERT failure: ");					\
-    ASSLOG(__FILE__);							\
-    ASSLOG(" : ");							\
-    ASSLOG(#b);								\
-    ASSLOG(" : ");							\
-    GridAbort();							\
-  };
-#endif
 
+///////////////////
+// Grid config
+///////////////////
+#include "Config.h"
 
 #ifdef TOFU
 #undef GRID_COMMS_THREADS

Grid/Grid_Eigen_Dense.h

@@ -14,11 +14,7 @@
 /* NVCC save and restore compile environment*/
 #ifdef __NVCC__
 #pragma push
-#ifdef __NVCC_DIAG_PRAGMA_SUPPORT__
-#pragma nv_diag_suppress code_is_unreachable
-#else
 #pragma diag_suppress code_is_unreachable
-#endif
 #pragma push_macro("__CUDA_ARCH__")
 #pragma push_macro("__NVCC__")
 #pragma push_macro("__CUDACC__")
@@ -34,7 +30,7 @@
 #pragma push_macro("__SYCL_DEVICE_ONLY__")
 #undef __SYCL_DEVICE_ONLY__
 #define EIGEN_DONT_VECTORIZE
-#undef EIGEN_USE_SYCL
+//#undef EIGEN_USE_SYCL
 #define __SYCL__REDEFINE__
 #endif
 

Grid/Makefile.am

@@ -66,12 +66,6 @@ if BUILD_FERMION_REPS
   extra_sources+=$(ADJ_FERMION_FILES)
   extra_sources+=$(TWOIND_FERMION_FILES)
 endif
-if BUILD_SP
-    extra_sources+=$(SP_FERMION_FILES)
-if BUILD_FERMION_REPS
-    extra_sources+=$(SP_TWOIND_FERMION_FILES)
-endif
-endif
 
 lib_LIBRARIES = libGrid.a
 

Grid/Namespace.h

@@ -29,7 +29,6 @@ directory
 #pragma once
 
 #include <type_traits>
-#include <exception>
 #include <cassert>
 
 #define NAMESPACE_BEGIN(A) namespace A {
@@ -37,7 +36,3 @@ directory
 #define GRID_NAMESPACE_BEGIN NAMESPACE_BEGIN(Grid)
 #define GRID_NAMESPACE_END   NAMESPACE_END(Grid)
 #define NAMESPACE_CHECK(x) struct namespaceTEST##x {};  static_assert(std::is_same<namespaceTEST##x, ::namespaceTEST##x>::value,"Not in :: at"  ); 
-
-#define EXCEPTION_CHECK_BEGIN(A) try {
-#define EXCEPTION_CHECK_END(A)   } catch ( std::exception e ) { BACKTRACEFP(stderr); std::cerr << __PRETTY_FUNCTION__ << " : " <<__LINE__<< " Caught exception "<<e.what()<<std::endl; throw; }
-

Grid/algorithms/Algorithms.h

@@ -29,9 +29,6 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #ifndef GRID_ALGORITHMS_H
 #define GRID_ALGORITHMS_H
 
-NAMESPACE_CHECK(blas);
-#include <Grid/algorithms/blas/BatchedBlas.h>
-
 NAMESPACE_CHECK(algorithms);
 #include <Grid/algorithms/SparseMatrix.h>
 #include <Grid/algorithms/LinearOperator.h>
@@ -47,13 +44,7 @@ NAMESPACE_CHECK(SparseMatrix);
 #include <Grid/algorithms/approx/RemezGeneral.h>
 #include <Grid/algorithms/approx/ZMobius.h>
 NAMESPACE_CHECK(approx);
-#include <Grid/algorithms/deflation/Deflation.h>
+#include <Grid/algorithms/iterative/Deflation.h>
-#include <Grid/algorithms/deflation/MultiRHSBlockProject.h>
-#include <Grid/algorithms/deflation/MultiRHSDeflation.h>
-#include <Grid/algorithms/deflation/MultiRHSBlockCGLinalg.h>
-// Not really deflation, but useful
-#include <Grid/algorithms/blas/MomentumProject.h>
-NAMESPACE_CHECK(deflation);
 #include <Grid/algorithms/iterative/ConjugateGradient.h>
 NAMESPACE_CHECK(ConjGrad);
 #include <Grid/algorithms/iterative/BiCGSTAB.h>
@@ -63,8 +54,6 @@ NAMESPACE_CHECK(BiCGSTAB);
 #include <Grid/algorithms/iterative/SchurRedBlack.h>
 #include <Grid/algorithms/iterative/ConjugateGradientMultiShift.h>
 #include <Grid/algorithms/iterative/ConjugateGradientMixedPrec.h>
-#include <Grid/algorithms/iterative/ConjugateGradientMultiShiftMixedPrec.h>
-#include <Grid/algorithms/iterative/ConjugateGradientMixedPrecBatched.h>
 #include <Grid/algorithms/iterative/BiCGSTABMixedPrec.h>
 #include <Grid/algorithms/iterative/BlockConjugateGradient.h>
 #include <Grid/algorithms/iterative/ConjugateGradientReliableUpdate.h>
@@ -76,11 +65,10 @@ NAMESPACE_CHECK(BiCGSTAB);
 #include <Grid/algorithms/iterative/MixedPrecisionFlexibleGeneralisedMinimalResidual.h>
 #include <Grid/algorithms/iterative/ImplicitlyRestartedLanczos.h>
 #include <Grid/algorithms/iterative/PowerMethod.h>
-#include <Grid/algorithms/iterative/AdefGeneric.h>
+
-#include <Grid/algorithms/iterative/AdefMrhs.h>
 NAMESPACE_CHECK(PowerMethod);
-#include <Grid/algorithms/multigrid/MultiGrid.h>
+#include <Grid/algorithms/CoarsenedMatrix.h>
-NAMESPACE_CHECK(multigrid);
+NAMESPACE_CHECK(CoarsendMatrix);
 #include <Grid/algorithms/FFT.h>
 
 #endif

Grid/algorithms/CoarsenedMatrix.h

@@ -56,6 +56,243 @@ inline void blockMaskedInnerProduct(Lattice<CComplex> &CoarseInner,
   blockSum(CoarseInner,fine_inner_msk);
 }
 
+
+class Geometry {
+public:
+  int npoint;
+  int base;
+  std::vector<int> directions   ;
+  std::vector<int> displacements;
+  std::vector<int> points_dagger;
+
+  Geometry(int _d)  {
+    
+    base = (_d==5) ? 1:0;
+
+    // make coarse grid stencil for 4d , not 5d
+    if ( _d==5 ) _d=4;
+
+    npoint = 2*_d+1;
+    directions.resize(npoint);
+    displacements.resize(npoint);
+    points_dagger.resize(npoint);
+    for(int d=0;d<_d;d++){
+      directions[d   ] = d+base;
+      directions[d+_d] = d+base;
+      displacements[d  ] = +1;
+      displacements[d+_d]= -1;
+      points_dagger[d   ] = d+_d;
+      points_dagger[d+_d] = d;
+    }
+    directions   [2*_d]=0;
+    displacements[2*_d]=0;
+    points_dagger[2*_d]=2*_d;
+  }
+
+  int point(int dir, int disp) {
+    assert(disp == -1 || disp == 0 || disp == 1);
+    assert(base+0 <= dir && dir < base+4);
+
+    // directions faster index = new indexing
+    // 4d (base = 0):
+    // point 0  1  2  3  4  5  6  7  8
+    // dir   0  1  2  3  0  1  2  3  0
+    // disp +1 +1 +1 +1 -1 -1 -1 -1  0
+    // 5d (base = 1):
+    // point 0  1  2  3  4  5  6  7  8
+    // dir   1  2  3  4  1  2  3  4  0
+    // disp +1 +1 +1 +1 -1 -1 -1 -1  0
+
+    // displacements faster index = old indexing
+    // 4d (base = 0):
+    // point 0  1  2  3  4  5  6  7  8
+    // dir   0  0  1  1  2  2  3  3  0
+    // disp +1 -1 +1 -1 +1 -1 +1 -1  0
+    // 5d (base = 1):
+    // point 0  1  2  3  4  5  6  7  8
+    // dir   1  1  2  2  3  3  4  4  0
+    // disp +1 -1 +1 -1 +1 -1 +1 -1  0
+
+    if(dir == 0 and disp == 0)
+      return 8;
+    else // New indexing
+      return (1 - disp) / 2 * 4 + dir - base;
+    // else // Old indexing
+    //   return (4 * (dir - base) + 1 - disp) / 2;
+  }
+};
+  
+template<class Fobj,class CComplex,int nbasis>
+class Aggregation   {
+public:
+  typedef iVector<CComplex,nbasis >             siteVector;
+  typedef Lattice<siteVector>                 CoarseVector;
+  typedef Lattice<iMatrix<CComplex,nbasis > > CoarseMatrix;
+
+  typedef Lattice< CComplex >   CoarseScalar; // used for inner products on fine field
+  typedef Lattice<Fobj >        FineField;
+
+  GridBase *CoarseGrid;
+  GridBase *FineGrid;
+  std::vector<Lattice<Fobj> > subspace;
+  int checkerboard;
+  int Checkerboard(void){return checkerboard;}
+  Aggregation(GridBase *_CoarseGrid,GridBase *_FineGrid,int _checkerboard) : 
+    CoarseGrid(_CoarseGrid),
+    FineGrid(_FineGrid),
+    subspace(nbasis,_FineGrid),
+    checkerboard(_checkerboard)
+  {
+  };
+  
+  void Orthogonalise(void){
+    CoarseScalar InnerProd(CoarseGrid); 
+    std::cout << GridLogMessage <<" Block Gramm-Schmidt pass 1"<<std::endl;
+    blockOrthogonalise(InnerProd,subspace);
+  } 
+  void ProjectToSubspace(CoarseVector &CoarseVec,const FineField &FineVec){
+    blockProject(CoarseVec,FineVec,subspace);
+  }
+  void PromoteFromSubspace(const CoarseVector &CoarseVec,FineField &FineVec){
+    FineVec.Checkerboard() = subspace[0].Checkerboard();
+    blockPromote(CoarseVec,FineVec,subspace);
+  }
+
+  virtual void CreateSubspace(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,int nn=nbasis) {
+
+    RealD scale;
+
+    ConjugateGradient<FineField> CG(1.0e-2,100,false);
+    FineField noise(FineGrid);
+    FineField Mn(FineGrid);
+
+    for(int b=0;b<nn;b++){
+      
+      subspace[b] = Zero();
+      gaussian(RNG,noise);
+      scale = std::pow(norm2(noise),-0.5); 
+      noise=noise*scale;
+      
+      hermop.Op(noise,Mn); std::cout<<GridLogMessage << "noise   ["<<b<<"] <n|MdagM|n> "<<norm2(Mn)<<std::endl;
+
+      for(int i=0;i<1;i++){
+
+	CG(hermop,noise,subspace[b]);
+
+	noise = subspace[b];
+	scale = std::pow(norm2(noise),-0.5); 
+	noise=noise*scale;
+
+      }
+
+      hermop.Op(noise,Mn); std::cout<<GridLogMessage << "filtered["<<b<<"] <f|MdagM|f> "<<norm2(Mn)<<std::endl;
+      subspace[b]   = noise;
+
+    }
+  }
+
+  ////////////////////////////////////////////////////////////////////////////////////////////////
+  // World of possibilities here. But have tried quite a lot of experiments (250+ jobs run on Summit)
+  // and this is the best I found
+  ////////////////////////////////////////////////////////////////////////////////////////////////
+
+  virtual void CreateSubspaceChebyshev(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,
+				       int nn,
+				       double hi,
+				       double lo,
+				       int orderfilter,
+				       int ordermin,
+				       int orderstep,
+				       double filterlo
+				       ) {
+
+    RealD scale;
+
+    FineField noise(FineGrid);
+    FineField Mn(FineGrid);
+    FineField tmp(FineGrid);
+
+    // New normalised noise
+    gaussian(RNG,noise);
+    scale = std::pow(norm2(noise),-0.5); 
+    noise=noise*scale;
+
+    // Initial matrix element
+    hermop.Op(noise,Mn); std::cout<<GridLogMessage << "noise <n|MdagM|n> "<<norm2(Mn)<<std::endl;
+
+    int b =0;
+    {
+      // Filter
+      Chebyshev<FineField> Cheb(lo,hi,orderfilter);
+      Cheb(hermop,noise,Mn);
+      // normalise
+      scale = std::pow(norm2(Mn),-0.5); 	Mn=Mn*scale;
+      subspace[b]   = Mn;
+      hermop.Op(Mn,tmp); 
+      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
+      b++;
+    }
+
+    // Generate a full sequence of Chebyshevs
+    {
+      lo=filterlo;
+      noise=Mn;
+
+      FineField T0(FineGrid); T0 = noise;  
+      FineField T1(FineGrid); 
+      FineField T2(FineGrid);
+      FineField y(FineGrid);
+      
+      FineField *Tnm = &T0;
+      FineField *Tn  = &T1;
+      FineField *Tnp = &T2;
+
+      // Tn=T1 = (xscale M + mscale)in
+      RealD xscale = 2.0/(hi-lo);
+      RealD mscale = -(hi+lo)/(hi-lo);
+      hermop.HermOp(T0,y);
+      T1=y*xscale+noise*mscale;
+
+      for(int n=2;n<=ordermin+orderstep*(nn-2);n++){
+	
+	hermop.HermOp(*Tn,y);
+
+	autoView( y_v , y, AcceleratorWrite);
+	autoView( Tn_v , (*Tn), AcceleratorWrite);
+	autoView( Tnp_v , (*Tnp), AcceleratorWrite);
+	autoView( Tnm_v , (*Tnm), AcceleratorWrite);
+	const int Nsimd = CComplex::Nsimd();
+	accelerator_forNB(ss, FineGrid->oSites(), Nsimd, {
+	  coalescedWrite(y_v[ss],xscale*y_v(ss)+mscale*Tn_v(ss));
+	  coalescedWrite(Tnp_v[ss],2.0*y_v(ss)-Tnm_v(ss));
+        });
+
+	// Possible more fine grained control is needed than a linear sweep,
+	// but huge productivity gain if this is simple algorithm and not a tunable
+	int m =1;
+	if ( n>=ordermin ) m=n-ordermin;
+	if ( (m%orderstep)==0 ) { 
+	  Mn=*Tnp;
+	  scale = std::pow(norm2(Mn),-0.5);         Mn=Mn*scale;
+	  subspace[b] = Mn;
+	  hermop.Op(Mn,tmp); 
+	  std::cout<<GridLogMessage << n<<" filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
+	  b++;
+	}
+
+	// Cycle pointers to avoid copies
+	FineField *swizzle = Tnm;
+	Tnm    =Tn;
+	Tn     =Tnp;
+	Tnp    =swizzle;
+	  
+      }
+    }
+    assert(b==nn);
+  }
+
+};
+
 // Fine Object == (per site) type of fine field
 // nbasis      == number of deflation vectors
 template<class Fobj,class CComplex,int nbasis>
@@ -87,9 +324,9 @@ public:
   GridBase*        _cbgrid;
   int hermitian;
 
-  CartesianStencil<siteVector,siteVector,DefaultImplParams> Stencil; 
+  CartesianStencil<siteVector,siteVector,int> Stencil; 
-  CartesianStencil<siteVector,siteVector,DefaultImplParams> StencilEven;
+  CartesianStencil<siteVector,siteVector,int> StencilEven;
-  CartesianStencil<siteVector,siteVector,DefaultImplParams> StencilOdd;
+  CartesianStencil<siteVector,siteVector,int> StencilOdd;
 
   std::vector<CoarseMatrix> A;
   std::vector<CoarseMatrix> Aeven;
@@ -99,7 +336,7 @@ public:
   CoarseMatrix AselfInvEven;
   CoarseMatrix AselfInvOdd;
 
-  deviceVector<RealD> dag_factor;
+  Vector<RealD> dag_factor;
 
   ///////////////////////
   // Interface
@@ -121,16 +358,12 @@ public:
     autoView( in_v , in, AcceleratorRead);
     autoView( out_v , out, AcceleratorWrite);
     autoView( Stencil_v  , Stencil, AcceleratorRead);
-    int npoint = geom.npoint;
+    auto& geom_v = geom;
     typedef LatticeView<Cobj> Aview;
       
-    deviceVector<Aview> AcceleratorViewContainer(geom.npoint);
+    Vector<Aview> AcceleratorViewContainer;
-    hostVector<Aview>   hAcceleratorViewContainer(geom.npoint);
   
-    for(int p=0;p<geom.npoint;p++) {
+    for(int p=0;p<geom.npoint;p++) AcceleratorViewContainer.push_back(A[p].View(AcceleratorRead));
-      hAcceleratorViewContainer[p] = A[p].View(AcceleratorRead);
-      acceleratorPut(AcceleratorViewContainer[p],hAcceleratorViewContainer[p]);
-    }
     Aview *Aview_p = & AcceleratorViewContainer[0];
 
     const int Nsimd = CComplex::Nsimd();
@@ -147,7 +380,7 @@ public:
       int ptype;
       StencilEntry *SE;
 
-      for(int point=0;point<npoint;point++){
+      for(int point=0;point<geom_v.npoint;point++){
 
 	SE=Stencil_v.GetEntry(ptype,point,ss);
 	  
@@ -165,7 +398,7 @@ public:
       coalescedWrite(out_v[ss](b),res);
       });
 
-    for(int p=0;p<geom.npoint;p++) hAcceleratorViewContainer[p].ViewClose();
+    for(int p=0;p<geom.npoint;p++) AcceleratorViewContainer[p].ViewClose();
   };
 
   void Mdag (const CoarseVector &in, CoarseVector &out)
@@ -191,17 +424,12 @@ public:
     autoView( in_v , in, AcceleratorRead);
     autoView( out_v , out, AcceleratorWrite);
     autoView( Stencil_v  , Stencil, AcceleratorRead);
-    int npoint = geom.npoint;
+    auto& geom_v = geom;
     typedef LatticeView<Cobj> Aview;
 
+    Vector<Aview> AcceleratorViewContainer;
 
-    deviceVector<Aview> AcceleratorViewContainer(geom.npoint);
+    for(int p=0;p<geom.npoint;p++) AcceleratorViewContainer.push_back(A[p].View(AcceleratorRead));
-    hostVector<Aview>   hAcceleratorViewContainer(geom.npoint);
-  
-    for(int p=0;p<geom.npoint;p++) {
-      hAcceleratorViewContainer[p] = A[p].View(AcceleratorRead);
-      acceleratorPut(AcceleratorViewContainer[p],hAcceleratorViewContainer[p]);
-    }
     Aview *Aview_p = & AcceleratorViewContainer[0];
 
     const int Nsimd = CComplex::Nsimd();
@@ -210,11 +438,9 @@ public:
 
     int osites=Grid()->oSites();
 
-    deviceVector<int> points(geom.npoint);
+    Vector<int> points(geom.npoint, 0);
-    for(int p=0; p<geom.npoint; p++) { 
+    for(int p=0; p<geom.npoint; p++)
-      acceleratorPut(points[p],geom.points_dagger[p]);
+      points[p] = geom.points_dagger[p];
-    }
-    auto points_p = &points[0];
 
     RealD* dag_factor_p = &dag_factor[0];
 
@@ -226,8 +452,8 @@ public:
       int ptype;
       StencilEntry *SE;
 
-      for(int p=0;p<npoint;p++){
+      for(int p=0;p<geom_v.npoint;p++){
-        int point = points_p[p];
+        int point = points[p];
 
 	SE=Stencil_v.GetEntry(ptype,point,ss);
 
@@ -245,7 +471,7 @@ public:
       coalescedWrite(out_v[ss](b),res);
       });
 
-    for(int p=0;p<geom.npoint;p++) hAcceleratorViewContainer[p].ViewClose();
+    for(int p=0;p<geom.npoint;p++) AcceleratorViewContainer[p].ViewClose();
   }
 
   void MdirComms(const CoarseVector &in)
@@ -260,14 +486,8 @@ public:
     out.Checkerboard() = in.Checkerboard();
 
     typedef LatticeView<Cobj> Aview;
-
+    Vector<Aview> AcceleratorViewContainer;
-    deviceVector<Aview> AcceleratorViewContainer(geom.npoint);
+    for(int p=0;p<geom.npoint;p++) AcceleratorViewContainer.push_back(A[p].View(AcceleratorRead));
-    hostVector<Aview>   hAcceleratorViewContainer(geom.npoint);
-  
-    for(int p=0;p<geom.npoint;p++) {
-      hAcceleratorViewContainer[p] = A[p].View(AcceleratorRead);
-      acceleratorPut(AcceleratorViewContainer[p],hAcceleratorViewContainer[p]);
-    }
     Aview *Aview_p = & AcceleratorViewContainer[0];
 
     autoView( out_v , out, AcceleratorWrite);
@@ -300,7 +520,7 @@ public:
       }
       coalescedWrite(out_v[ss](b),res);
     });
-    for(int p=0;p<geom.npoint;p++) hAcceleratorViewContainer[p].ViewClose();
+    for(int p=0;p<geom.npoint;p++) AcceleratorViewContainer[p].ViewClose();
   }
   void MdirAll(const CoarseVector &in,std::vector<CoarseVector> &out)
   {
@@ -309,7 +529,7 @@ public:
     if ((out.size()!=ndir)&&(out.size()!=ndir+1)) { 
       std::cout <<"MdirAll out size "<< out.size()<<std::endl;
       std::cout <<"MdirAll ndir "<< ndir<<std::endl;
-      GRID_ASSERT(0);
+      assert(0);
     }
     for(int p=0;p<ndir;p++){
       MdirCalc(in,out[p],p);
@@ -373,7 +593,7 @@ public:
     conformable(in.Grid(), _cbgrid);    // verifies half grid
     conformable(in.Grid(), out.Grid()); // drops the cb check
 
-    GRID_ASSERT(in.Checkerboard() == Even);
+    assert(in.Checkerboard() == Even);
     out.Checkerboard() = Odd;
 
     DhopInternal(StencilEven, Aodd, in, out, dag);
@@ -383,7 +603,7 @@ public:
     conformable(in.Grid(), _cbgrid);    // verifies half grid
     conformable(in.Grid(), out.Grid()); // drops the cb check
 
-    GRID_ASSERT(in.Checkerboard() == Odd);
+    assert(in.Checkerboard() == Odd);
     out.Checkerboard() = Even;
 
     DhopInternal(StencilOdd, Aeven, in, out, dag);
@@ -391,7 +611,7 @@ public:
 
   void MooeeInternal(const CoarseVector &in, CoarseVector &out, int dag, int inv) {
     out.Checkerboard() = in.Checkerboard();
-    GRID_ASSERT(in.Checkerboard() == Odd || in.Checkerboard() == Even);
+    assert(in.Checkerboard() == Odd || in.Checkerboard() == Even);
 
     CoarseMatrix *Aself = nullptr;
     if(in.Grid()->_isCheckerBoarded) {
@@ -406,10 +626,10 @@ public:
       Aself = (inv) ? &AselfInv : &A[geom.npoint-1];
       DselfInternal(Stencil, *Aself, in, out, dag);
     }
-    GRID_ASSERT(Aself != nullptr);
+    assert(Aself != nullptr);
   }
 
-  void DselfInternal(CartesianStencil<siteVector,siteVector,DefaultImplParams> &st, CoarseMatrix &a,
+  void DselfInternal(CartesianStencil<siteVector,siteVector,int> &st, CoarseMatrix &a,
                        const CoarseVector &in, CoarseVector &out, int dag) {
     int point = geom.npoint-1;
     autoView( out_v, out, AcceleratorWrite);
@@ -472,7 +692,7 @@ public:
     }
   }
 
-  void DhopInternal(CartesianStencil<siteVector,siteVector,DefaultImplParams> &st, std::vector<CoarseMatrix> &a,
+  void DhopInternal(CartesianStencil<siteVector,siteVector,int> &st, std::vector<CoarseMatrix> &a,
                     const CoarseVector &in, CoarseVector &out, int dag) {
     SimpleCompressor<siteVector> compressor;
 
@@ -484,20 +704,12 @@ public:
 
     // determine in what order we need the points
     int npoint = geom.npoint-1;
-    deviceVector<int> points(npoint);
+    Vector<int> points(npoint, 0);
-    for(int p=0; p<npoint; p++) {
+    for(int p=0; p<npoint; p++)
-      int val = (dag && !hermitian) ? geom.points_dagger[p] : p;
+      points[p] = (dag && !hermitian) ? geom.points_dagger[p] : p;
-      acceleratorPut(points[p], val);
-    }
-    auto points_p = &points[0];
 
-    deviceVector<Aview> AcceleratorViewContainer(geom.npoint);
+    Vector<Aview> AcceleratorViewContainer;
-    hostVector<Aview>   hAcceleratorViewContainer(geom.npoint);
+    for(int p=0;p<npoint;p++) AcceleratorViewContainer.push_back(a[p].View(AcceleratorRead));
-  
-    for(int p=0;p<geom.npoint;p++) {
-      hAcceleratorViewContainer[p] = a[p].View(AcceleratorRead);
-      acceleratorPut(AcceleratorViewContainer[p],hAcceleratorViewContainer[p]);
-    }
     Aview *Aview_p = & AcceleratorViewContainer[0];
 
     const int Nsimd = CComplex::Nsimd();
@@ -516,7 +728,7 @@ public:
         StencilEntry *SE;
 
         for(int p=0;p<npoint;p++){
-          int point = points_p[p];
+          int point = points[p];
           SE=st_v.GetEntry(ptype,point,ss);
 
           if(SE->_is_local) {
@@ -542,7 +754,7 @@ public:
         StencilEntry *SE;
 
         for(int p=0;p<npoint;p++){
-          int point = points_p[p];
+          int point = points[p];
           SE=st_v.GetEntry(ptype,point,ss);
 
           if(SE->_is_local) {
@@ -560,7 +772,7 @@ public:
       });
     }
 
-    for(int p=0;p<npoint;p++) hAcceleratorViewContainer[p].ViewClose();
+    for(int p=0;p<npoint;p++) AcceleratorViewContainer[p].ViewClose();
   }
   
   CoarsenedMatrix(GridCartesian &CoarseGrid, int hermitian_=0) 	:
@@ -568,9 +780,9 @@ public:
     _cbgrid(new GridRedBlackCartesian(&CoarseGrid)),
     geom(CoarseGrid._ndimension),
     hermitian(hermitian_),
-    Stencil(&CoarseGrid,geom.npoint,Even,geom.directions,geom.displacements),
+    Stencil(&CoarseGrid,geom.npoint,Even,geom.directions,geom.displacements,0),
-    StencilEven(_cbgrid,geom.npoint,Even,geom.directions,geom.displacements),
+    StencilEven(_cbgrid,geom.npoint,Even,geom.directions,geom.displacements,0),
-    StencilOdd(_cbgrid,geom.npoint,Odd,geom.directions,geom.displacements),
+    StencilOdd(_cbgrid,geom.npoint,Odd,geom.directions,geom.displacements,0),
     A(geom.npoint,&CoarseGrid),
     Aeven(geom.npoint,_cbgrid),
     Aodd(geom.npoint,_cbgrid),
@@ -588,9 +800,9 @@ public:
     _cbgrid(&CoarseRBGrid),
     geom(CoarseGrid._ndimension),
     hermitian(hermitian_),
-    Stencil(&CoarseGrid,geom.npoint,Even,geom.directions,geom.displacements),
+    Stencil(&CoarseGrid,geom.npoint,Even,geom.directions,geom.displacements,0),
-    StencilEven(&CoarseRBGrid,geom.npoint,Even,geom.directions,geom.displacements),
+    StencilEven(&CoarseRBGrid,geom.npoint,Even,geom.directions,geom.displacements,0),
-    StencilOdd(&CoarseRBGrid,geom.npoint,Odd,geom.directions,geom.displacements),
+    StencilOdd(&CoarseRBGrid,geom.npoint,Odd,geom.directions,geom.displacements,0),
     A(geom.npoint,&CoarseGrid),
     Aeven(geom.npoint,&CoarseRBGrid),
     Aodd(geom.npoint,&CoarseRBGrid),
@@ -611,13 +823,11 @@ public:
     }
 
     // GPU readable prefactor
-    std::vector<RealD> h_dag_factor(nbasis*nbasis);
     thread_for(i, nbasis*nbasis, {
       int j = i/nbasis;
       int k = i%nbasis;
-      h_dag_factor[i] = dag_factor_eigen(j, k);
+      dag_factor[i] = dag_factor_eigen(j, k);
     });
-    acceleratorCopyToDevice(&h_dag_factor[0],&dag_factor[0],dag_factor.size()*sizeof(RealD));
   }
 
   void CoarsenOperator(GridBase *FineGrid,LinearOperatorBase<Lattice<Fobj> > &linop,
@@ -697,7 +907,7 @@ public:
     evenmask = where(mod(bcb,2)==(Integer)0,one,zero);
     oddmask  = one-evenmask;
 
-    GRID_ASSERT(self_stencil!=-1);
+    assert(self_stencil!=-1);
 
     for(int i=0;i<nbasis;i++){
 

Grid/algorithms/FFT.h

@@ -28,206 +28,95 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #ifndef _GRID_FFT_H_
 #define _GRID_FFT_H_
 
-#ifdef GRID_CUDA
-#include <cufft.h>
-#endif
-
-#ifdef GRID_HIP
-#include <hipfft/hipfft.h>
-#endif
-
-#if !defined(GRID_CUDA) && !defined(GRID_HIP)
 #ifdef HAVE_FFTW
-#if defined(USE_MKL) || defined(GRID_SYCL)
+#ifdef USE_MKL
 #include <fftw/fftw3.h>
 #else
 #include <fftw3.h>
 #endif
 #endif
-#endif
 
 NAMESPACE_BEGIN(Grid);
 
-#ifndef FFTW_FORWARD
+template<class scalar> struct FFTW { };
-#define FFTW_FORWARD (-1)
-#define FFTW_BACKWARD (+1)
-#define FFTW_ESTIMATE (0)
-#endif
 
-template<class scalar> struct FFTW {
-};
-
-#ifdef GRID_HIP
-template<> struct FFTW<ComplexD> {
-public:
-  static const int forward=FFTW_FORWARD;
-  static const int backward=FFTW_BACKWARD;
-  typedef hipfftDoubleComplex FFTW_scalar;
-  typedef hipfftHandle        FFTW_plan;
-  static FFTW_plan fftw_plan_many_dft(int rank, int *n,int howmany,
-				      FFTW_scalar *in, int *inembed,		
-				      int istride, int idist,		
-				      FFTW_scalar *out, int *onembed,		
-				      int ostride, int odist,		
-				      int sign, unsigned flags) {
-    FFTW_plan p;
-    auto rv = hipfftPlanMany(&p,rank,n,n,istride,idist,n,ostride,odist,HIPFFT_Z2Z,howmany);
-    GRID_ASSERT(rv==HIPFFT_SUCCESS);
-    return p;
-  }	  
-    
-  inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out, int sign) {
-    hipfftResult rv;
-    if ( sign == forward ) rv =hipfftExecZ2Z(p,in,out,HIPFFT_FORWARD);
-    else                   rv =hipfftExecZ2Z(p,in,out,HIPFFT_BACKWARD);
-    accelerator_barrier();
-    GRID_ASSERT(rv==HIPFFT_SUCCESS);
-  }
-  inline static void fftw_destroy_plan(const FFTW_plan p) {
-    hipfftDestroy(p);
-  }
-};
-template<> struct FFTW<ComplexF> {
-public:
-  static const int forward=FFTW_FORWARD;
-  static const int backward=FFTW_BACKWARD;
-  typedef hipfftComplex      FFTW_scalar;
-  typedef hipfftHandle        FFTW_plan;
-
-  static FFTW_plan fftw_plan_many_dft(int rank, int *n,int howmany,
-				      FFTW_scalar *in, int *inembed,		
-				      int istride, int idist,		
-				      FFTW_scalar *out, int *onembed,		
-				      int ostride, int odist,		
-				      int sign, unsigned flags) {
-    FFTW_plan p;
-    auto rv = hipfftPlanMany(&p,rank,n,n,istride,idist,n,ostride,odist,HIPFFT_C2C,howmany);
-    GRID_ASSERT(rv==HIPFFT_SUCCESS);
-    return p;
-  }	  
-    
-  inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out, int sign) {
-    hipfftResult rv;
-    if ( sign == forward ) rv =hipfftExecC2C(p,in,out,HIPFFT_FORWARD);
-    else                   rv =hipfftExecC2C(p,in,out,HIPFFT_BACKWARD);
-    accelerator_barrier();
-    GRID_ASSERT(rv==HIPFFT_SUCCESS);
-  }
-  inline static void fftw_destroy_plan(const FFTW_plan p) {
-    hipfftDestroy(p);
-  }
-};
-#endif
-
-#ifdef GRID_CUDA
-template<> struct FFTW<ComplexD> {
-public:
-  static const int forward=FFTW_FORWARD;
-  static const int backward=FFTW_BACKWARD;
-  typedef cufftDoubleComplex FFTW_scalar;
-  typedef cufftHandle        FFTW_plan;
-
-  static FFTW_plan fftw_plan_many_dft(int rank, int *n,int howmany,
-				      FFTW_scalar *in, int *inembed,		
-				      int istride, int idist,		
-				      FFTW_scalar *out, int *onembed,		
-				      int ostride, int odist,		
-				      int sign, unsigned flags) {
-    FFTW_plan p;
-    cufftPlanMany(&p,rank,n,n,istride,idist,n,ostride,odist,CUFFT_Z2Z,howmany);
-    return p;
-  }	  
-    
-  inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out, int sign) {
-    if ( sign == forward ) cufftExecZ2Z(p,in,out,CUFFT_FORWARD);
-    else                   cufftExecZ2Z(p,in,out,CUFFT_INVERSE);
-    accelerator_barrier();
-  }
-  inline static void fftw_destroy_plan(const FFTW_plan p) {
-    cufftDestroy(p);
-  }
-};
-template<> struct FFTW<ComplexF> {
-public:
-  static const int forward=FFTW_FORWARD;
-  static const int backward=FFTW_BACKWARD;
-  typedef cufftComplex FFTW_scalar;
-  typedef cufftHandle        FFTW_plan;
-
-  static FFTW_plan fftw_plan_many_dft(int rank, int *n,int howmany,
-				      FFTW_scalar *in, int *inembed,		
-				      int istride, int idist,		
-				      FFTW_scalar *out, int *onembed,		
-				      int ostride, int odist,		
-				      int sign, unsigned flags) {
-    FFTW_plan p;
-    cufftPlanMany(&p,rank,n,n,istride,idist,n,ostride,odist,CUFFT_C2C,howmany);
-    return p;
-  }	  
-    
-  inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out, int sign) {
-    if ( sign == forward ) cufftExecC2C(p,in,out,CUFFT_FORWARD);
-    else                   cufftExecC2C(p,in,out,CUFFT_INVERSE);
-    accelerator_barrier();
-  }
-  inline static void fftw_destroy_plan(const FFTW_plan p) {
-    cufftDestroy(p);
-  }
-};
-#endif
-
-#if !defined(GRID_CUDA) && !defined(GRID_HIP)
 #ifdef HAVE_FFTW	
 template<> struct FFTW<ComplexD> {
 public:
+
   typedef fftw_complex FFTW_scalar;
   typedef fftw_plan    FFTW_plan;
-  static FFTW_plan fftw_plan_many_dft(int rank, int *n,int howmany,
+
-				      FFTW_scalar *in, int *inembed,		
+  static FFTW_plan fftw_plan_many_dft(int rank, const int *n,int howmany,
+				      FFTW_scalar *in, const int *inembed,		
 				      int istride, int idist,		
-				      FFTW_scalar *out, int *onembed,		
+				      FFTW_scalar *out, const int *onembed,		
 				      int ostride, int odist,		
 				      int sign, unsigned flags) {
     return ::fftw_plan_many_dft(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,sign,flags);
   }	  
     
-  inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out, int sign) {
+  static void fftw_flops(const FFTW_plan p,double *add, double *mul, double *fmas){
+    ::fftw_flops(p,add,mul,fmas);
+  }
+
+  inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out) {
     ::fftw_execute_dft(p,in,out);
   }
   inline static void fftw_destroy_plan(const FFTW_plan p) {
     ::fftw_destroy_plan(p);
   }
 };
+
 template<> struct FFTW<ComplexF> {
 public:
+
   typedef fftwf_complex FFTW_scalar;
   typedef fftwf_plan    FFTW_plan;
-  static FFTW_plan fftw_plan_many_dft(int rank, int *n,int howmany,
+
-				      FFTW_scalar *in, int *inembed,		
+  static FFTW_plan fftw_plan_many_dft(int rank, const int *n,int howmany,
+				      FFTW_scalar *in, const int *inembed,		
 				      int istride, int idist,		
-				      FFTW_scalar *out, int *onembed,		
+				      FFTW_scalar *out, const int *onembed,		
 				      int ostride, int odist,		
 				      int sign, unsigned flags) {
     return ::fftwf_plan_many_dft(rank,n,howmany,in,inembed,istride,idist,out,onembed,ostride,odist,sign,flags);
   }	  
     
-  inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out, int sign) {
+  static void fftw_flops(const FFTW_plan p,double *add, double *mul, double *fmas){
+    ::fftwf_flops(p,add,mul,fmas);
+  }
+
+  inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out) {
     ::fftwf_execute_dft(p,in,out);
   }
   inline static void fftw_destroy_plan(const FFTW_plan p) {
     ::fftwf_destroy_plan(p);
   }
 };
+
 #endif
+
+#ifndef FFTW_FORWARD
+#define FFTW_FORWARD (-1)
+#define FFTW_BACKWARD (+1)
 #endif
 
 class FFT {
 private:
     
+  GridCartesian *vgrid;
+  GridCartesian *sgrid;
+    
+  int Nd;
   double flops;
   double flops_call;
   uint64_t usec;
     
+  Coordinate dimensions;
+  Coordinate processors;
+  Coordinate processor_coor;
+    
 public:
     
   static const int forward=FFTW_FORWARD;
@@ -237,25 +126,31 @@ public:
   double MFlops(void) {return flops/usec;}
   double USec(void)   {return (double)usec;}    
 
-  FFT ( GridCartesian * grid ) 
+  FFT ( GridCartesian * grid ) :
+    vgrid(grid),
+    Nd(grid->_ndimension),
+    dimensions(grid->_fdimensions),
+    processors(grid->_processors),
+    processor_coor(grid->_processor_coor)
   {
     flops=0;
     usec =0;
+    Coordinate layout(Nd,1);
+    sgrid = new GridCartesian(dimensions,layout,processors);
   };
     
   ~FFT ( void)  {
-    //    delete sgrid;
+    delete sgrid;
   }
     
   template<class vobj>
   void FFT_dim_mask(Lattice<vobj> &result,const Lattice<vobj> &source,Coordinate mask,int sign){
 
-    //    vgrid=result.Grid();
+    conformable(result.Grid(),vgrid);
-    //    conformable(result.Grid(),vgrid);
+    conformable(source.Grid(),vgrid);
-    //    conformable(source.Grid(),vgrid);
+    Lattice<vobj> tmp(vgrid);
-    const int Ndim = source.Grid()->Nd();
+    tmp = source;
-    Lattice<vobj> tmp = source;
+    for(int d=0;d<Nd;d++){
-    for(int d=0;d<Ndim;d++){
       if( mask[d] ) {
 	FFT_dim(result,tmp,d,sign);
 	tmp=result;
@@ -265,70 +160,59 @@ public:
 
   template<class vobj>
   void FFT_all_dim(Lattice<vobj> &result,const Lattice<vobj> &source,int sign){
-    const int Ndim = source.Grid()->Nd();
+    Coordinate mask(Nd,1);
-    Coordinate mask(Ndim,1);
     FFT_dim_mask(result,source,mask,sign);
   }
 
 
   template<class vobj>
   void FFT_dim(Lattice<vobj> &result,const Lattice<vobj> &source,int dim, int sign){
-    const int Ndim = source.Grid()->Nd();
+#ifndef HAVE_FFTW
-    GridBase *grid = source.Grid();
+    assert(0);
-    conformable(result.Grid(),source.Grid());
+#else
+    conformable(result.Grid(),vgrid);
+    conformable(source.Grid(),vgrid);
 
-    int L = grid->_ldimensions[dim];
+    int L = vgrid->_ldimensions[dim];
-    int G = grid->_fdimensions[dim];
+    int G = vgrid->_fdimensions[dim];
       
-    Coordinate layout(Ndim,1);
+    Coordinate layout(Nd,1);
+    Coordinate pencil_gd(vgrid->_fdimensions);
+      
+    pencil_gd[dim] = G*processors[dim];
+      
+    // Pencil global vol LxLxGxLxL per node
+    GridCartesian pencil_g(pencil_gd,layout,processors);
       
     // Construct pencils
     typedef typename vobj::scalar_object sobj;
-    typedef typename vobj::scalar_type   scalar;
+    typedef typename sobj::scalar_type   scalar;
-    typedef typename vobj::scalar_type   scalar_type;
-    typedef typename vobj::vector_type   vector_type;
       
-    //std::cout << "CPU view" << std::endl;
+    Lattice<sobj> pgbuf(&pencil_g);
+    autoView(pgbuf_v , pgbuf, CpuWrite);
 
     typedef typename FFTW<scalar>::FFTW_scalar FFTW_scalar;
     typedef typename FFTW<scalar>::FFTW_plan   FFTW_plan;
       
     int Ncomp = sizeof(sobj)/sizeof(scalar);
-    int64_t Nlow  = 1;
+    int Nlow  = 1;
-    int64_t Nhigh = 1;
-
     for(int d=0;d<dim;d++){
-      Nlow*=grid->_ldimensions[d];
+      Nlow*=vgrid->_ldimensions[d];
     }
-    for(int d=dim+1;d<Ndim;d++){
-      Nhigh*=grid->_ldimensions[d];
-    }
-    int64_t Nperp=Nlow*Nhigh;
-    
-    deviceVector<scalar> pgbuf; // Layout is [perp][component][dim]
-    pgbuf.resize(Nperp*Ncomp*G);
-    scalar *pgbuf_v = &pgbuf[0];
       
     int rank = 1;  /* 1d transforms */
     int n[] = {G}; /* 1d transforms of length G */
-    int howmany = Ncomp * Nperp;
+    int howmany = Ncomp;
     int odist,idist,istride,ostride;
-    idist   = odist   = G;            /* Distance between consecutive FT's */
+    idist   = odist   = 1;          /* Distance between consecutive FT's */
-    istride = ostride = 1;            /* Distance between two elements in the same FT */
+    istride = ostride = Ncomp*Nlow; /* distance between two elements in the same FT */
     int *inembed = n, *onembed = n;
       
     scalar div;
     if ( sign == backward ) div = 1.0/G;
     else if ( sign == forward ) div = 1.0;
-    else GRID_ASSERT(0);
+    else assert(0);
       
-    double t_pencil=0;
-    double t_fft   =0;
-    double t_total =-usecond();
-    //    std::cout << GridLogPerformance<<"Making FFTW plan" << std::endl;
-    /*
-     *
-     */
     FFTW_plan p;
     {
       FFTW_scalar *in = (FFTW_scalar *)&pgbuf_v[0];
@@ -342,154 +226,68 @@ public:
     }
       
     // Barrel shift and collect global pencil
-    //    std::cout << GridLogPerformance<<"Making pencil" << std::endl;
+    Coordinate lcoor(Nd), gcoor(Nd);
-    Coordinate lcoor(Ndim), gcoor(Ndim);
-    double t_copy=0;
-    double t_shift=0;
-    t_pencil = -usecond();
     result = source;
-    int pc = grid->_processor_coor[dim];
+    int pc = processor_coor[dim];
-
-    const Coordinate ldims = grid->_ldimensions;
-    const Coordinate rdims = grid->_rdimensions;
-    const Coordinate sdims = grid->_simd_layout;
-
-    Coordinate processors = grid->_processors;
-    Coordinate pgdims(Ndim);
-    pgdims[0] = G;
-    for(int d=0, dd=1;d<Ndim;d++){
-      if ( d!=dim ) pgdims[dd++] = ldims[d];
-    }
-    int64_t pgvol=1;
-    for(int d=0;d<Ndim;d++) pgvol*=pgdims[d];
-    
-    const int Nsimd = vobj::Nsimd();
     for(int p=0;p<processors[dim];p++) {
-      t_copy-=usecond();
-      autoView(r_v,result,AcceleratorRead);
-      accelerator_for(idx, grid->oSites(), vobj::Nsimd(), {
-#ifdef GRID_SIMT
       {
-	int lane=acceleratorSIMTlane(Nsimd); // buffer lane
+	autoView(r_v,result,CpuRead);
-#else
+	autoView(p_v,pgbuf,CpuWrite);
-      for(int lane=0;lane<Nsimd;lane++) {
+	thread_for(idx, sgrid->lSites(),{
-#endif
+          Coordinate cbuf(Nd);
-	Coordinate icoor;
+          sobj s;
-	Coordinate ocoor;
+	  sgrid->LocalIndexToLocalCoor(idx,cbuf);
-	Coordinate pgcoor;
+	  peekLocalSite(s,r_v,cbuf);
-
+	  cbuf[dim]+=((pc+p) % processors[dim])*L;
-	Lexicographic::CoorFromIndex(icoor,lane,sdims);
+	  pokeLocalSite(s,p_v,cbuf);
-	Lexicographic::CoorFromIndex(ocoor,idx,rdims);
+        });
-
-	pgcoor[0] = ocoor[dim] + icoor[dim]*rdims[dim] + ((pc+p)%processors[dim])*L;
-	for(int d=0,dd=1;d<Ndim;d++){
-	  if ( d!=dim ) {
-	    pgcoor[dd] = ocoor[d] + icoor[d]*rdims[d];
-	    dd++;
-	  }
-	}
-
-	// Map coordinates in lattice layout to FFTW index
-	int64_t pgidx;
-	Lexicographic::IndexFromCoor(pgcoor,pgidx,pgdims);
-
-	vector_type *from = (vector_type *)&r_v[idx];
-	scalar_type stmp;
-	for(int w=0;w<Ncomp;w++){
-	  int64_t pg_idx = pgidx + w*pgvol;
-	  stmp = getlane(from[w], lane);
-	  pgbuf_v[pg_idx] = stmp;
-	}
-#ifdef GRID_SIMT
       }
-#else
-      }
-#endif
-      });
-
-      t_copy+=usecond();
       if (p != processors[dim] - 1) {
-	Lattice<vobj> temp(grid);
+	result = Cshift(result,dim,L);
-	t_shift-=usecond();
-	temp = Cshift(result,dim,L); result = temp;
-	t_shift+=usecond();
       }
     }
-    t_pencil += usecond();
       
-    FFTW_scalar *in = (FFTW_scalar *)pgbuf_v;
+    // Loop over orthog coords
-    FFTW_scalar *out= (FFTW_scalar *)pgbuf_v;
+    int NN=pencil_g.lSites();
-    t_fft = -usecond();
+    GridStopWatch timer;
-    FFTW<scalar>::fftw_execute_dft(p,in,out,sign);
+    timer.Start();
-    t_fft += usecond();
+    thread_for( idx,NN,{
+        Coordinate cbuf(Nd);
+	pencil_g.LocalIndexToLocalCoor(idx, cbuf);
+	if ( cbuf[dim] == 0 ) {  // restricts loop to plane at lcoor[dim]==0
+	  FFTW_scalar *in = (FFTW_scalar *)&pgbuf_v[idx];
+	  FFTW_scalar *out= (FFTW_scalar *)&pgbuf_v[idx];
+	  FFTW<scalar>::fftw_execute_dft(p,in,out);
+	}
+    });
+    timer.Stop();
       
     // performance counting
-    flops_call = 5.0*howmany*G*log2(G);
+    double add,mul,fma;
-    usec = t_fft;
+    FFTW<scalar>::fftw_flops(p,&add,&mul,&fma);
-    flops= flops_call;
+    flops_call = add+mul+2.0*fma;
+    usec += timer.useconds();
+    flops+= flops_call*NN;
       
-    result = Zero();
+    // writing out result
-    
-    double t_insert = -usecond();
     {
-      autoView(r_v,result,AcceleratorWrite);
+      autoView(pgbuf_v,pgbuf,CpuRead);
-      accelerator_for(idx,grid->oSites(),Nsimd,{
+      autoView(result_v,result,CpuWrite);
-#ifdef GRID_SIMT
+      thread_for(idx,sgrid->lSites(),{
-      {
+	Coordinate clbuf(Nd), cgbuf(Nd);
-	int lane=acceleratorSIMTlane(Nsimd); // buffer lane
+	sobj s;
-#else
+	sgrid->LocalIndexToLocalCoor(idx,clbuf);
-      for(int lane=0;lane<Nsimd;lane++) {
+	cgbuf = clbuf;
-#endif
+	cgbuf[dim] = clbuf[dim]+L*pc;
-	Coordinate icoor(Ndim);
+	peekLocalSite(s,pgbuf_v,cgbuf);
-	Coordinate ocoor(Ndim);
+	pokeLocalSite(s,result_v,clbuf);
-	Coordinate pgcoor(Ndim);
-
-	Lexicographic::CoorFromIndex(icoor,lane,sdims);
-	Lexicographic::CoorFromIndex(ocoor,idx,rdims);
-
-	pgcoor[0] = ocoor[dim] + icoor[dim]*rdims[dim] + pc*L;
-	for(int d=0,dd=1;d<Ndim;d++){
-	  if ( d!=dim ) {
-	    pgcoor[dd] = ocoor[d] + icoor[d]*rdims[d];
-	    dd++;
-	  }
-	}
-	// Map coordinates in lattice layout to FFTW index
-	int64_t pgidx;
-	Lexicographic::IndexFromCoor(pgcoor,pgidx,pgdims);
-
-	vector_type *to = (vector_type *)&r_v[idx];
-	scalar_type stmp;
-	for(int w=0;w<Ncomp;w++){
-	  int64_t pg_idx = pgidx + w*pgvol;
-	  stmp = pgbuf_v[pg_idx];
-	  putlane(to[w], stmp, lane);
-	}
-	
-#ifdef GRID_SIMT
-      }
-#else
-      }
-#endif
       });
     }
-
     result = result*div;
       
-    t_insert +=usecond();
-    
     // destroying plan
     FFTW<scalar>::fftw_destroy_plan(p);
-
+#endif
-    t_total +=usecond();
-
-    std::cout <<GridLogPerformance<< " FFT took   "<<t_total/1.0e6 <<" s" << std::endl;
-    std::cout <<GridLogPerformance<< " FFT pencil "<<t_pencil/1.0e6 <<" s" << std::endl;
-    std::cout <<GridLogPerformance<< "  of which copy "<<t_copy/1.0e6 <<" s" << std::endl;
-    std::cout <<GridLogPerformance<< "  of which shift"<<t_shift/1.0e6 <<" s" << std::endl;
-    std::cout <<GridLogPerformance<< " FFT kernels "<<t_fft/1.0e6 <<" s" << std::endl;
-    std::cout <<GridLogPerformance<< " FFT insert  "<<t_insert/1.0e6 <<" s" << std::endl;
-    
   }
 };
 

Grid/algorithms/LinearOperator.h

@@ -52,7 +52,6 @@ public:
   virtual void AdjOp  (const Field &in, Field &out) = 0; // Abstract base
   virtual void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2)=0;
   virtual void HermOp(const Field &in, Field &out)=0;
-  virtual ~LinearOperatorBase(){};
 };
 
 
@@ -64,7 +63,7 @@ public:
 //
 // I'm not entirely happy with implementation; to share the Schur code between herm and non-herm
 // while still having a "OpAndNorm" in the abstract base I had to implement it in both cases
-// with an GRID_ASSERT trap in the non-herm. This isn't right; there must be a better C++ way to
+// with an assert trap in the non-herm. This isn't right; there must be a better C++ way to
 // do it, but I fear it required multiple inheritance and mixed in abstract base classes
 /////////////////////////////////////////////////////////////////////////////////////////////
 
@@ -103,38 +102,6 @@ public:
     _Mat.MdagM(in,out);
   }
 };
-template<class Matrix,class Field>
-class MMdagLinearOperator : public LinearOperatorBase<Field> {
-  Matrix &_Mat;
-public:
-  MMdagLinearOperator(Matrix &Mat): _Mat(Mat){};
-
-  // Support for coarsening to a multigrid
-  void OpDiag (const Field &in, Field &out) {
-    _Mat.Mdiag(in,out);
-  }
-  void OpDir  (const Field &in, Field &out,int dir,int disp) {
-    _Mat.Mdir(in,out,dir,disp);
-  }
-  void OpDirAll  (const Field &in, std::vector<Field> &out){
-    _Mat.MdirAll(in,out);
-  };
-  void Op     (const Field &in, Field &out){
-    _Mat.M(in,out);
-  }
-  void AdjOp     (const Field &in, Field &out){
-    _Mat.Mdag(in,out);
-  }
-  void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
-    _Mat.MMdag(in,out);
-    ComplexD dot = innerProduct(in,out);
-    n1=real(dot);
-    n2=norm2(out);
-  }
-  void HermOp(const Field &in, Field &out){
-    _Mat.MMdag(in,out);
-  }
-};
 
 ////////////////////////////////////////////////////////////////////
 // Construct herm op and shift it for mgrid smoother
@@ -148,22 +115,22 @@ public:
   // Support for coarsening to a multigrid
   void OpDiag (const Field &in, Field &out) {
     _Mat.Mdiag(in,out);
-    GRID_ASSERT(0);
+    assert(0);
   }
   void OpDir  (const Field &in, Field &out,int dir,int disp) {
     _Mat.Mdir(in,out,dir,disp);
-    GRID_ASSERT(0);
+    assert(0);
   }
   void OpDirAll  (const Field &in, std::vector<Field> &out){
-    GRID_ASSERT(0);
+    assert(0);
   };
   void Op     (const Field &in, Field &out){
     _Mat.M(in,out);
-    GRID_ASSERT(0);
+    assert(0);
   }
   void AdjOp     (const Field &in, Field &out){
     _Mat.Mdag(in,out);
-    GRID_ASSERT(0);
+    assert(0);
   }
   void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
     HermOp(in,out);
@@ -177,44 +144,6 @@ public:
   }
 };
 
-////////////////////////////////////////////////////////////////////
-// Create a shifted HermOp
-////////////////////////////////////////////////////////////////////
-template<class Field>
-class ShiftedHermOpLinearOperator : public LinearOperatorBase<Field> {
-  LinearOperatorBase<Field> &_Mat;
-  RealD _shift;
-public:
-  ShiftedHermOpLinearOperator(LinearOperatorBase<Field> &Mat,RealD shift): _Mat(Mat), _shift(shift){};
-  // Support for coarsening to a multigrid
-  void OpDiag (const Field &in, Field &out) {
-    GRID_ASSERT(0);
-  }
-  void OpDir  (const Field &in, Field &out,int dir,int disp) {
-    GRID_ASSERT(0);
-  }
-  void OpDirAll  (const Field &in, std::vector<Field> &out){
-    GRID_ASSERT(0);
-  };
-  void Op     (const Field &in, Field &out){
-    HermOp(in,out);
-  }
-  void AdjOp     (const Field &in, Field &out){
-    HermOp(in,out);
-  }
-  void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
-    HermOp(in,out);
-    ComplexD dot = innerProduct(in,out);
-    n1=real(dot);
-    n2=norm2(out);
-  }
-  void HermOp(const Field &in, Field &out){
-    _Mat.HermOp(in,out);
-    out = out + _shift*in;
-  }
-};
-
-
 ////////////////////////////////////////////////////////////////////
 // Wrap an already herm matrix
 ////////////////////////////////////////////////////////////////////
@@ -271,42 +200,10 @@ public:
     _Mat.Mdag(in,out);
   }
   void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
-    GRID_ASSERT(0);
+    assert(0);
   }
   void HermOp(const Field &in, Field &out){
-    GRID_ASSERT(0);
+    assert(0);
-  }
-};
-template<class Matrix,class Field>
-class ShiftedNonHermitianLinearOperator : public LinearOperatorBase<Field> {
-  Matrix &_Mat;
-  RealD shift;
-public:
-  ShiftedNonHermitianLinearOperator(Matrix &Mat,RealD shft): _Mat(Mat),shift(shft){};
-  // Support for coarsening to a multigrid
-  void OpDiag (const Field &in, Field &out) {
-    _Mat.Mdiag(in,out);
-    out = out + shift*in;
-  }
-  void OpDir  (const Field &in, Field &out,int dir,int disp) {
-    _Mat.Mdir(in,out,dir,disp);
-  }
-  void OpDirAll  (const Field &in, std::vector<Field> &out){
-    _Mat.MdirAll(in,out);
-  };
-  void Op     (const Field &in, Field &out){
-    _Mat.M(in,out);
-    out = out + shift * in;
-  }
-  void AdjOp     (const Field &in, Field &out){
-    _Mat.Mdag(in,out);
-    out = out + shift * in;
-  }
-  void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
-    GRID_ASSERT(0);
-  }
-  void HermOp(const Field &in, Field &out){
-    GRID_ASSERT(0);
   }
 };
 
@@ -345,13 +242,13 @@ class SchurOperatorBase :  public LinearOperatorBase<Field> {
   }
   // Support for coarsening to a multigrid
   void OpDiag (const Field &in, Field &out) {
-    GRID_ASSERT(0); // must coarsen the unpreconditioned system
+    assert(0); // must coarsen the unpreconditioned system
   }
   void OpDir  (const Field &in, Field &out,int dir,int disp) {
-    GRID_ASSERT(0);
+    assert(0);
   }
   void OpDirAll  (const Field &in, std::vector<Field> &out){
-    GRID_ASSERT(0);
+    assert(0);
   };
 };
 template<class Matrix,class Field>
@@ -447,10 +344,10 @@ class NonHermitianSchurOperatorBase :  public LinearOperatorBase<Field>
     MpcDag(tmp,out);
   }
   virtual void HermOpAndNorm(const Field& in, Field& out, RealD& n1, RealD& n2) {
-    GRID_ASSERT(0);
+    assert(0);
   }
   virtual void HermOp(const Field& in, Field& out) {
-    GRID_ASSERT(0);
+    assert(0);
   }
   void Op(const Field& in, Field& out) {
     Mpc(in, out);
@@ -460,13 +357,13 @@ class NonHermitianSchurOperatorBase :  public LinearOperatorBase<Field>
   }
   // Support for coarsening to a multigrid
   void OpDiag(const Field& in, Field& out) {
-    GRID_ASSERT(0); // must coarsen the unpreconditioned system
+    assert(0); // must coarsen the unpreconditioned system
   }
   void OpDir(const Field& in, Field& out, int dir, int disp) {
-    GRID_ASSERT(0);
+    assert(0);
   }
   void OpDirAll(const Field& in, std::vector<Field>& out){
-    GRID_ASSERT(0);
+    assert(0);
   };
 };
 
@@ -580,7 +477,7 @@ class SchurStaggeredOperator :  public SchurOperatorBase<Field> {
  public:
   SchurStaggeredOperator (Matrix &Mat): _Mat(Mat), tmp(_Mat.RedBlackGrid()) 
   { 
-    GRID_ASSERT( _Mat.isTrivialEE() );
+    assert( _Mat.isTrivialEE() );
     mass = _Mat.Mass();
   }
   virtual void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
@@ -610,8 +507,8 @@ class SchurStaggeredOperator :  public SchurOperatorBase<Field> {
   virtual  void MpcDag   (const Field &in, Field &out){
     Mpc(in,out);
   }
-  virtual void MpcDagMpc(const Field &in, Field &out) {
+  virtual void MpcDagMpc(const Field &in, Field &out,RealD &ni,RealD &no) {
-    GRID_ASSERT(0);// Never need with staggered
+    assert(0);// Never need with staggered
   }
 };
 template<class Matrix,class Field> using SchurStagOperator = SchurStaggeredOperator<Matrix,Field>;
@@ -623,28 +520,16 @@ template<class Field> class OperatorFunction {
 public:
   virtual void operator() (LinearOperatorBase<Field> &Linop, const Field &in, Field &out) = 0;
   virtual void operator() (LinearOperatorBase<Field> &Linop, const std::vector<Field> &in,std::vector<Field> &out) {
-    GRID_ASSERT(in.size()==out.size());
+    assert(in.size()==out.size());
     for(int k=0;k<in.size();k++){
       (*this)(Linop,in[k],out[k]);
     }
   };
-  virtual ~OperatorFunction(){};
 };
 
 template<class Field> class LinearFunction {
 public:
   virtual void operator() (const Field &in, Field &out) = 0;
-
-  virtual void operator() (const std::vector<Field> &in, std::vector<Field> &out)
-  {
-    GRID_ASSERT(in.size() == out.size());
-
-    for (unsigned int i = 0; i < in.size(); ++i)
-    {
-      (*this)(in[i], out[i]);
-    }
-  }
-  virtual ~LinearFunction(){};
 };
 
 template<class Field> class IdentityLinearFunction : public LinearFunction<Field> {
@@ -690,7 +575,6 @@ class HermOpOperatorFunction : public OperatorFunction<Field> {
 template<typename Field>
 class PlainHermOp : public LinearFunction<Field> {
 public:
-  using LinearFunction<Field>::operator();
   LinearOperatorBase<Field> &_Linop;
       
   PlainHermOp(LinearOperatorBase<Field>& linop) : _Linop(linop) 
@@ -704,7 +588,6 @@ public:
 template<typename Field>
 class FunctionHermOp : public LinearFunction<Field> {
 public:
-  using LinearFunction<Field>::operator(); 
   OperatorFunction<Field>   & _poly;
   LinearOperatorBase<Field> &_Linop;
       

Grid/algorithms/Preconditioner.h

@@ -30,19 +30,13 @@ Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
 
 NAMESPACE_BEGIN(Grid);
 
-template<class Field> using Preconditioner =  LinearFunction<Field> ;
-
-/*
 template<class Field> class Preconditioner :  public LinearFunction<Field> { 
-  using LinearFunction<Field>::operator();
   virtual void operator()(const Field &src, Field & psi)=0;
 };
-*/
 
 template<class Field> class TrivialPrecon :  public Preconditioner<Field> { 
 public:
-  using Preconditioner<Field>::operator();
+  void operator()(const Field &src, Field & psi){
-  virtual void operator()(const Field &src, Field & psi){
     psi = src;
   }
   TrivialPrecon(void){};

Grid/algorithms/SparseMatrix.h

@@ -45,15 +45,9 @@ public:
     M(in,tmp);
     Mdag(tmp,out);
   }
-  virtual void  MMdag(const Field &in, Field &out) {
-    Field tmp (in.Grid());
-    Mdag(in,tmp);
-    M(tmp,out);
-  }
   virtual  void Mdiag    (const Field &in, Field &out)=0;
   virtual  void Mdir     (const Field &in, Field &out,int dir, int disp)=0;
   virtual  void MdirAll  (const Field &in, std::vector<Field> &out)=0;
-  virtual ~SparseMatrixBase() {};
 };
 
 /////////////////////////////////////////////////////////////////////////////////////////////
@@ -78,7 +72,7 @@ public:
   virtual  void MeooeDag    (const Field &in, Field &out)=0;
   virtual  void MooeeDag    (const Field &in, Field &out)=0;
   virtual  void MooeeInvDag (const Field &in, Field &out)=0;
-  virtual ~CheckerBoardedSparseMatrixBase() {};
+
 };
 
 NAMESPACE_END(Grid);

Grid/algorithms/approx/Chebyshev.h

@@ -59,7 +59,7 @@ public:
     RealD diff = hi-lo;
     RealD delta = diff*1.0e-9;
     for (RealD x=lo; x<hi; x+=delta) {
-      delta*=1.02;
+      delta*=1.1;
       RealD f = approx(x);
       out<< x<<" "<<f<<std::endl;
     }
@@ -90,8 +90,9 @@ public:
     order=_order;
       
     if(order < 2) exit(-1);
-    Coeffs.resize(order,0.0);
+    Coeffs.resize(order);
-    Coeffs[order-1] = 1.0;
+    Coeffs.assign(0.,order);
+    Coeffs[order-1] = 1.;
   };
   
   // PB - more efficient low pass drops high modes above the low as 1/x uses all Chebyshev's.
@@ -131,26 +132,6 @@ public:
       Coeffs[j] = s * 2.0/order;
     }
   };
-  template<class functor>
-  void Init(RealD _lo,RealD _hi,int _order, functor & func)
-  {
-    lo=_lo;
-    hi=_hi;
-    order=_order;
-      
-    if(order < 2) exit(-1);
-    Coeffs.resize(order);
-    for(int j=0;j<order;j++){
-      RealD s=0;
-      for(int k=0;k<order;k++){
-	RealD y=std::cos(M_PI*(k+0.5)/order);
-	RealD x=0.5*(y*(hi-lo)+(hi+lo));
-	RealD f=func(x);
-	s=s+f*std::cos( j*M_PI*(k+0.5)/order );
-      }
-      Coeffs[j] = s * 2.0/order;
-    }
-  };
 
     
   void JacksonSmooth(void){
@@ -259,32 +240,46 @@ public:
     Field T0(grid); T0 = in;  
     Field T1(grid); 
     Field T2(grid);
+    Field Tout(grid);
     Field y(grid);
       
     Field *Tnm = &T0;
     Field *Tn  = &T1;
     Field *Tnp = &T2;
 
+    std::cout << GridLogMessage << "Chebyshev() starts"<<std::endl;
     // Tn=T1 = (xscale M + mscale)in
     RealD xscale = 2.0/(hi-lo);
     RealD mscale = -(hi+lo)/(hi-lo);
     Linop.HermOp(T0,y);
-    grid->Barrier();
     axpby(T1,xscale,mscale,y,in);
-    grid->Barrier();
 
     // sum = .5 c[0] T0 + c[1] T1
     //    out = ()*T0 + Coeffs[1]*T1;
-    axpby(out,0.5*Coeffs[0],Coeffs[1],T0,T1);
+    axpby(Tout,0.5*Coeffs[0],Coeffs[1],T0,T1);
     for(int n=2;n<order;n++){
 
       Linop.HermOp(*Tn,y);
-      axpby(y,xscale,mscale,y,(*Tn));
+#if 0
-      axpby(*Tnp,2.0,-1.0,y,(*Tnm));
+      auto y_v = y.View();
+      auto Tn_v = Tn->View();
+      auto Tnp_v = Tnp->View();
+      auto Tnm_v = Tnm->View();
+      constexpr int Nsimd = vector_type::Nsimd();
+      accelerator_forNB(ss, in.Grid()->oSites(), Nsimd, {
+	  coalescedWrite(y_v[ss],xscale*y_v(ss)+mscale*Tn_v(ss));
+	  coalescedWrite(Tnp_v[ss],2.0*y_v(ss)-Tnm_v(ss));
+      });
       if ( Coeffs[n] != 0.0) {
 	axpy(out,Coeffs[n],*Tnp,out);
       }
-
+#else
+      axpby(y,xscale,mscale,y,(*Tn));
+      axpby(*Tnp,2.0,-1.0,y,(*Tnm));
+      if ( Coeffs[n] != 0.0) {
+	axpy(Tout,Coeffs[n],*Tnp,Tout);
+      }
+#endif
       // Cycle pointers to avoid copies
       Field *swizzle = Tnm;
       Tnm    =Tn;
@@ -292,6 +287,8 @@ public:
       Tnp    =swizzle;
 	  
     }
+    out = Tout;
+    std::cout << GridLogMessage << "Chebyshev() ends"<<std::endl;
   }
 };
 
@@ -384,24 +381,26 @@ public:
     Field T0(grid); T0 = in;  
     Field T1(grid); 
     Field T2(grid);
+    Field Tout(grid);
     Field  y(grid);
       
     Field *Tnm = &T0;
     Field *Tn  = &T1;
     Field *Tnp = &T2;
 
+    std::cout << GridLogMessage << "ChebyshevLanczos() starts"<<std::endl;
     // Tn=T1 = (xscale M )*in
     AminusMuSq(Linop,T0,T1);
 
     // sum = .5 c[0] T0 + c[1] T1
-    out = (0.5*Coeffs[0])*T0 + Coeffs[1]*T1;
+    Tout = (0.5*Coeffs[0])*T0 + Coeffs[1]*T1;
     for(int n=2;n<order;n++){
 	
       AminusMuSq(Linop,*Tn,y);
 
       *Tnp=2.0*y-(*Tnm);
 
-      out=out+Coeffs[n]* (*Tnp);
+      Tout=Tout+Coeffs[n]* (*Tnp);
 
       // Cycle pointers to avoid copies
       Field *swizzle = Tnm;
@@ -410,6 +409,8 @@ public:
       Tnp    =swizzle;
 	  
     }
+    out=Tout;
+    std::cout << GridLogMessage << "ChebyshevLanczos() ends"<<std::endl;
   }
 };
 NAMESPACE_END(Grid);

Grid/algorithms/approx/MultiShiftFunction.h

@@ -40,7 +40,7 @@ public:
   RealD norm;
   RealD lo,hi;
 
-  MultiShiftFunction(int n,RealD _lo,RealD _hi): poles(n), residues(n), tolerances(n), lo(_lo), hi(_hi) {;};
+  MultiShiftFunction(int n,RealD _lo,RealD _hi): poles(n), residues(n), lo(_lo), hi(_hi) {;};
   RealD approx(RealD x);
   void csv(std::ostream &out);
   void gnuplot(std::ostream &out);

Grid/algorithms/approx/Remez.cc

@@ -121,7 +121,7 @@ double AlgRemez::generateApprox(int num_degree, int den_degree,
   // Reallocate arrays, since degree has changed
   if (num_degree != n || den_degree != d) allocate(num_degree,den_degree);
 
-  GRID_ASSERT(a_len<=SUM_MAX);
+  assert(a_len<=SUM_MAX);
 
   step = new bigfloat[num_degree+den_degree+2];
 
@@ -151,9 +151,9 @@ double AlgRemez::generateApprox(int num_degree, int den_degree,
     equations();
     if (delta < tolerance) {
       std::cout<<"Delta too small, try increasing precision\n";
-      GRID_ASSERT(0);
+      assert(0);
     };    
-    GRID_ASSERT( delta>= tolerance);
+    assert( delta>= tolerance);
 
     search(step);
   }

Grid/algorithms/approx/Remez.h

@@ -134,7 +134,7 @@ class AlgRemez
   virtual ~AlgRemez();
 
   int getDegree(void){ 
-    GRID_ASSERT(n==d);
+    assert(n==d);
     return n;
   }
   // Reset the bounds of the approximation

Grid/algorithms/approx/RemezGeneral.cc

@@ -28,11 +28,11 @@ void AlgRemezGeneral::setupPolyProperties(int num_degree, int den_degree, PolyTy
   pow_n = num_degree;
   pow_d = den_degree;
 
-  if(pow_n % 2 == 0 && num_type_in == PolyType::Odd) GRID_ASSERT(0);
+  if(pow_n % 2 == 0 && num_type_in == PolyType::Odd) assert(0);
-  if(pow_n % 2 == 1 && num_type_in == PolyType::Even) GRID_ASSERT(0);
+  if(pow_n % 2 == 1 && num_type_in == PolyType::Even) assert(0);
 
-  if(pow_d % 2 == 0 && den_type_in == PolyType::Odd) GRID_ASSERT(0);
+  if(pow_d % 2 == 0 && den_type_in == PolyType::Odd) assert(0);
-  if(pow_d % 2 == 1 && den_type_in == PolyType::Even) GRID_ASSERT(0);
+  if(pow_d % 2 == 1 && den_type_in == PolyType::Even) assert(0);
 
   num_type = num_type_in;
   den_type = den_type_in;
@@ -112,9 +112,9 @@ double AlgRemezGeneral::generateApprox(const int num_degree, const int den_degre
     equations();
     if (delta < tolerance) {
       std::cout<<"Iteration " << iter-1 << " delta too small (" << delta << "<" << tolerance << "), try increasing precision\n";
-      GRID_ASSERT(0);
+      assert(0);
     };    
-    GRID_ASSERT( delta>= tolerance );
+    assert( delta>= tolerance );
 
     search();
   }
@@ -278,7 +278,7 @@ void AlgRemezGeneral::equations(){
       if(num_pows[j] != -1){ *aa++ = z; t++; }
       z *= x;
     }
-    GRID_ASSERT(t == n+1);
+    assert(t == n+1);
 
     z = (bigfloat)1l;
     t = 0;
@@ -286,7 +286,7 @@ void AlgRemezGeneral::equations(){
       if(den_pows[j] != -1){ *aa++ = -y * z; t++; }
       z *= x;
     }
-    GRID_ASSERT(t == d);
+    assert(t == d);
 
     B[i] = y * z;		// Right hand side vector
   }

Grid/algorithms/approx/RemezGeneral.h

@@ -106,7 +106,7 @@ class AlgRemezGeneral{
 		  bigfloat (*f)(bigfloat x, void *data), void *data);
 
   inline int getDegree(void) const{ 
-    GRID_ASSERT(n==d);
+    assert(n==d);
     return n;
   }
   // Reset the bounds of the approximation

Grid/algorithms/approx/ZMobius.cc

@@ -74,7 +74,7 @@ bigfloat epsilonMobius(bigfloat x, void* data){
 void computeZmobiusOmega(std::vector<ComplexD> &omega_out, const int Ls_out,
 			 const std::vector<RealD> &omega_in, const int Ls_in,
 			 const RealD lambda_bound){
-  GRID_ASSERT(omega_in.size() == Ls_in);
+  assert(omega_in.size() == Ls_in);
   omega_out.resize(Ls_out);
 
   //Use the Remez algorithm to generate the appropriate rational polynomial

Grid/algorithms/approx/Zolotarev.cc

@@ -293,7 +293,7 @@ static void sncndnFK(INTERNAL_PRECISION u, INTERNAL_PRECISION k,
  * Set type = 0 for the Zolotarev approximation, which is zero at x = 0, and
  * type = 1 for the approximation which is infinite at x = 0. */
 
-zolotarev_data* zolotarev(ZOLO_PRECISION epsilon, int n, int type) {
+zolotarev_data* zolotarev(PRECISION epsilon, int n, int type) {
   INTERNAL_PRECISION A, c, cp, kp, ksq, sn, cn, dn, Kp, Kj, z, z0, t, M, F,
     l, invlambda, xi, xisq, *tv, s, opl;
   int m, czero, ts;
@@ -375,12 +375,12 @@ zolotarev_data* zolotarev(ZOLO_PRECISION epsilon, int n, int type) {
   construct_partfrac(d);
   construct_contfrac(d);
 
-  /* Converting everything to ZOLO_PRECISION for external use only */
+  /* Converting everything to PRECISION for external use only */
 
   zd = (zolotarev_data*) malloc(sizeof(zolotarev_data));
-  zd -> A = (ZOLO_PRECISION) d -> A;
+  zd -> A = (PRECISION) d -> A;
-  zd -> Delta = (ZOLO_PRECISION) d -> Delta;
+  zd -> Delta = (PRECISION) d -> Delta;
-  zd -> epsilon = (ZOLO_PRECISION) d -> epsilon;
+  zd -> epsilon = (PRECISION) d -> epsilon;
   zd -> n = d -> n;
   zd -> type = d -> type;
   zd -> dn = d -> dn;
@@ -390,24 +390,24 @@ zolotarev_data* zolotarev(ZOLO_PRECISION epsilon, int n, int type) {
   zd -> deg_num = d -> deg_num;
   zd -> deg_denom = d -> deg_denom;
 
-  zd -> a = (ZOLO_PRECISION*) malloc(zd -> dn * sizeof(ZOLO_PRECISION));
+  zd -> a = (PRECISION*) malloc(zd -> dn * sizeof(PRECISION));
-  for (m = 0; m < zd -> dn; m++) zd -> a[m] = (ZOLO_PRECISION) d -> a[m];
+  for (m = 0; m < zd -> dn; m++) zd -> a[m] = (PRECISION) d -> a[m];
   free(d -> a);
 
-  zd -> ap = (ZOLO_PRECISION*) malloc(zd -> dd * sizeof(ZOLO_PRECISION));
+  zd -> ap = (PRECISION*) malloc(zd -> dd * sizeof(PRECISION));
-  for (m = 0; m < zd -> dd; m++) zd -> ap[m] = (ZOLO_PRECISION) d -> ap[m];
+  for (m = 0; m < zd -> dd; m++) zd -> ap[m] = (PRECISION) d -> ap[m];
   free(d -> ap);
 
-  zd -> alpha = (ZOLO_PRECISION*) malloc(zd -> da * sizeof(ZOLO_PRECISION));
+  zd -> alpha = (PRECISION*) malloc(zd -> da * sizeof(PRECISION));
-  for (m = 0; m < zd -> da; m++) zd -> alpha[m] = (ZOLO_PRECISION) d -> alpha[m];
+  for (m = 0; m < zd -> da; m++) zd -> alpha[m] = (PRECISION) d -> alpha[m];
   free(d -> alpha);
 
-  zd -> beta = (ZOLO_PRECISION*) malloc(zd -> db * sizeof(ZOLO_PRECISION));
+  zd -> beta = (PRECISION*) malloc(zd -> db * sizeof(PRECISION));
-  for (m = 0; m < zd -> db; m++) zd -> beta[m] = (ZOLO_PRECISION) d -> beta[m];
+  for (m = 0; m < zd -> db; m++) zd -> beta[m] = (PRECISION) d -> beta[m];
   free(d -> beta);
 
-  zd -> gamma = (ZOLO_PRECISION*) malloc(zd -> n * sizeof(ZOLO_PRECISION));
+  zd -> gamma = (PRECISION*) malloc(zd -> n * sizeof(PRECISION));
-  for (m = 0; m < zd -> n; m++) zd -> gamma[m] = (ZOLO_PRECISION) d -> gamma[m];
+  for (m = 0; m < zd -> n; m++) zd -> gamma[m] = (PRECISION) d -> gamma[m];
   free(d -> gamma);
 
   free(d);
@@ -426,7 +426,7 @@ void zolotarev_free(zolotarev_data *zdata)
 }
 
 
-zolotarev_data* higham(ZOLO_PRECISION epsilon, int n) {
+zolotarev_data* higham(PRECISION epsilon, int n) {
   INTERNAL_PRECISION A, M, c, cp, z, z0, t, epssq;
   int m, czero;
   zolotarev_data *zd;
@@ -481,9 +481,9 @@ zolotarev_data* higham(ZOLO_PRECISION epsilon, int n) {
   /* Converting everything to PRECISION for external use only */
 
   zd = (zolotarev_data*) malloc(sizeof(zolotarev_data));
-  zd -> A = (ZOLO_PRECISION) d -> A;
+  zd -> A = (PRECISION) d -> A;
-  zd -> Delta = (ZOLO_PRECISION) d -> Delta;
+  zd -> Delta = (PRECISION) d -> Delta;
-  zd -> epsilon = (ZOLO_PRECISION) d -> epsilon;
+  zd -> epsilon = (PRECISION) d -> epsilon;
   zd -> n = d -> n;
   zd -> type = d -> type;
   zd -> dn = d -> dn;
@@ -493,24 +493,24 @@ zolotarev_data* higham(ZOLO_PRECISION epsilon, int n) {
   zd -> deg_num = d -> deg_num;
   zd -> deg_denom = d -> deg_denom;
 
-  zd -> a = (ZOLO_PRECISION*) malloc(zd -> dn * sizeof(ZOLO_PRECISION));
+  zd -> a = (PRECISION*) malloc(zd -> dn * sizeof(PRECISION));
-  for (m = 0; m < zd -> dn; m++) zd -> a[m] = (ZOLO_PRECISION) d -> a[m];
+  for (m = 0; m < zd -> dn; m++) zd -> a[m] = (PRECISION) d -> a[m];
   free(d -> a);
 
-  zd -> ap = (ZOLO_PRECISION*) malloc(zd -> dd * sizeof(ZOLO_PRECISION));
+  zd -> ap = (PRECISION*) malloc(zd -> dd * sizeof(PRECISION));
-  for (m = 0; m < zd -> dd; m++) zd -> ap[m] = (ZOLO_PRECISION) d -> ap[m];
+  for (m = 0; m < zd -> dd; m++) zd -> ap[m] = (PRECISION) d -> ap[m];
   free(d -> ap);
 
-  zd -> alpha = (ZOLO_PRECISION*) malloc(zd -> da * sizeof(ZOLO_PRECISION));
+  zd -> alpha = (PRECISION*) malloc(zd -> da * sizeof(PRECISION));
-  for (m = 0; m < zd -> da; m++) zd -> alpha[m] = (ZOLO_PRECISION) d -> alpha[m];
+  for (m = 0; m < zd -> da; m++) zd -> alpha[m] = (PRECISION) d -> alpha[m];
   free(d -> alpha);
 
-  zd -> beta = (ZOLO_PRECISION*) malloc(zd -> db * sizeof(ZOLO_PRECISION));
+  zd -> beta = (PRECISION*) malloc(zd -> db * sizeof(PRECISION));
-  for (m = 0; m < zd -> db; m++) zd -> beta[m] = (ZOLO_PRECISION) d -> beta[m];
+  for (m = 0; m < zd -> db; m++) zd -> beta[m] = (PRECISION) d -> beta[m];
   free(d -> beta);
 
-  zd -> gamma = (ZOLO_PRECISION*) malloc(zd -> n * sizeof(ZOLO_PRECISION));
+  zd -> gamma = (PRECISION*) malloc(zd -> n * sizeof(PRECISION));
-  for (m = 0; m < zd -> n; m++) zd -> gamma[m] = (ZOLO_PRECISION) d -> gamma[m];
+  for (m = 0; m < zd -> n; m++) zd -> gamma[m] = (PRECISION) d -> gamma[m];
   free(d -> gamma);
 
   free(d);
@@ -523,17 +523,17 @@ NAMESPACE_END(Grid);
 #ifdef TEST
 
 #undef ZERO
-#define ZERO ((ZOLO_PRECISION) 0)
+#define ZERO ((PRECISION) 0)
 #undef ONE
-#define ONE ((ZOLO_PRECISION) 1)
+#define ONE ((PRECISION) 1)
 #undef TWO
-#define TWO ((ZOLO_PRECISION) 2)
+#define TWO ((PRECISION) 2)
 
 /* Evaluate the rational approximation R(x) using the factored form */
 
-static ZOLO_PRECISION zolotarev_eval(ZOLO_PRECISION x, zolotarev_data* rdata) {
+static PRECISION zolotarev_eval(PRECISION x, zolotarev_data* rdata) {
   int m;
-  ZOLO_PRECISION R;
+  PRECISION R;
 
   if (rdata -> type == 0) {
     R = rdata -> A * x;
@@ -551,9 +551,9 @@ static ZOLO_PRECISION zolotarev_eval(ZOLO_PRECISION x, zolotarev_data* rdata) {
 
 /* Evaluate the rational approximation R(x) using the partial fraction form */
 
-static ZOLO_PRECISION zolotarev_partfrac_eval(ZOLO_PRECISION x, zolotarev_data* rdata) {
+static PRECISION zolotarev_partfrac_eval(PRECISION x, zolotarev_data* rdata) {
   int m;
-  ZOLO_PRECISION R = rdata -> alpha[rdata -> da - 1];
+  PRECISION R = rdata -> alpha[rdata -> da - 1];
   for (m = 0; m < rdata -> dd; m++)
     R += rdata -> alpha[m] / (x * x - rdata -> ap[m]);
   if (rdata -> type == 1) R += rdata -> alpha[rdata -> dd] / (x * x);
@@ -568,18 +568,18 @@ static ZOLO_PRECISION zolotarev_partfrac_eval(ZOLO_PRECISION x, zolotarev_data*
  * non-signalling overflow this will work correctly since 1/(1/0) = 1/INF = 0,
  * but with signalling overflow you will get an error message. */
 
-static ZOLO_PRECISION zolotarev_contfrac_eval(ZOLO_PRECISION x, zolotarev_data* rdata) {
+static PRECISION zolotarev_contfrac_eval(PRECISION x, zolotarev_data* rdata) {
   int m;
-  ZOLO_PRECISION R = rdata -> beta[0] * x;
+  PRECISION R = rdata -> beta[0] * x;
   for (m = 1; m < rdata -> db; m++) R = rdata -> beta[m] * x + ONE / R;
   return R;
 }    
 
 /* Evaluate the rational approximation R(x) using Cayley form */
 
-static ZOLO_PRECISION zolotarev_cayley_eval(ZOLO_PRECISION x, zolotarev_data* rdata) {
+static PRECISION zolotarev_cayley_eval(PRECISION x, zolotarev_data* rdata) {
   int m;
-  ZOLO_PRECISION T;
+  PRECISION T;
 
   T = rdata -> type == 0 ? ONE : -ONE;
   for (m = 0; m < rdata -> n; m++)
@@ -607,7 +607,7 @@ int main(int argc, char** argv) {
   int m, n, plotpts = 5000, type = 0;
   float eps, x, ypferr, ycferr, ycaylerr, maxypferr, maxycferr, maxycaylerr;
   zolotarev_data *rdata;
-  ZOLO_PRECISION y;
+  PRECISION y;
   FILE *plot_function, *plot_error, 
     *plot_partfrac, *plot_contfrac, *plot_cayley;
 
@@ -626,13 +626,13 @@ int main(int argc, char** argv) {
   }
 
   rdata = type == 2 
-    ? higham((ZOLO_PRECISION) eps, n) 
+    ? higham((PRECISION) eps, n) 
-    : zolotarev((ZOLO_PRECISION) eps, n, type);
+    : zolotarev((PRECISION) eps, n, type);
 
   printf("Zolotarev Test: R(epsilon = %g, n = %d, type = %d)\n\t" 
 	 STRINGIFY(VERSION) "\n\t" STRINGIFY(HVERSION)
 	 "\n\tINTERNAL_PRECISION = " STRINGIFY(INTERNAL_PRECISION)
-	 "\tZOLO_PRECISION = " STRINGIFY(ZOLO_PRECISION)
+	 "\tPRECISION = " STRINGIFY(PRECISION)
 	 "\n\n\tRational approximation of degree (%d,%d), %s at x = 0\n"
 	 "\tDelta = %g (maximum error)\n\n"
 	 "\tA = %g (overall factor)\n",
@@ -681,15 +681,15 @@ int main(int argc, char** argv) {
     x = 2.4 * (float) m / plotpts - 1.2;
     if (rdata -> type == 0 || fabs(x) * (float) plotpts > 1.0) {
       /* skip x = 0 for type 1, as R(0) is singular */
-      y = zolotarev_eval((ZOLO_PRECISION) x, rdata);
+      y = zolotarev_eval((PRECISION) x, rdata);
       fprintf(plot_function, "%g %g\n", x, (float) y);
       fprintf(plot_error, "%g %g\n",
 	      x, (float)((y - ((x > 0.0 ? ONE : -ONE))) / rdata -> Delta));
-      ypferr = (float)((zolotarev_partfrac_eval((ZOLO_PRECISION) x, rdata) - y)
+      ypferr = (float)((zolotarev_partfrac_eval((PRECISION) x, rdata) - y)
 		       / rdata -> Delta);
-      ycferr = (float)((zolotarev_contfrac_eval((ZOLO_PRECISION) x, rdata) - y)
+      ycferr = (float)((zolotarev_contfrac_eval((PRECISION) x, rdata) - y)
 		       / rdata -> Delta);
-      ycaylerr = (float)((zolotarev_cayley_eval((ZOLO_PRECISION) x, rdata) - y)
+      ycaylerr = (float)((zolotarev_cayley_eval((PRECISION) x, rdata) - y)
 		       / rdata -> Delta);
       if (fabs(x) < 1.0 && fabs(x) > rdata -> epsilon) {
 	maxypferr = MAX(maxypferr, fabs(ypferr));

Grid/algorithms/approx/Zolotarev.h

@@ -9,10 +9,10 @@ NAMESPACE_BEGIN(Approx);
 #define HVERSION Header Time-stamp: <14-OCT-2004 09:26:51.00 adk@MISSCONTRARY>
 
 #ifndef ZOLOTAREV_INTERNAL
-#ifndef ZOLO_PRECISION
+#ifndef PRECISION
-#define ZOLO_PRECISION double
+#define PRECISION double
 #endif
-#define ZPRECISION ZOLO_PRECISION
+#define ZPRECISION PRECISION
 #define ZOLOTAREV_DATA zolotarev_data
 #endif
 
@@ -77,8 +77,8 @@ typedef struct {
  * zolotarev_data structure. The arguments must satisfy the constraints that
  * epsilon > 0, n > 0, and type = 0 or 1. */
 
-ZOLOTAREV_DATA* higham(ZOLO_PRECISION epsilon, int n) ;
+ZOLOTAREV_DATA* higham(PRECISION epsilon, int n) ;
-ZOLOTAREV_DATA* zolotarev(ZOLO_PRECISION epsilon, int n, int type);
+ZOLOTAREV_DATA* zolotarev(PRECISION epsilon, int n, int type);
 void zolotarev_free(zolotarev_data *zdata);
 #endif
 
@@ -86,4 +86,3 @@ void zolotarev_free(zolotarev_data *zdata);
 NAMESPACE_END(Approx);
 NAMESPACE_END(Grid);
 #endif
-

Grid/algorithms/blas/BatchedBlas.cc

@@ -1,34 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: BatchedBlas.h
-
-    Copyright (C) 2023
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#include <Grid/GridCore.h>
-#include <Grid/algorithms/blas/BatchedBlas.h>
-NAMESPACE_BEGIN(Grid);
-gridblasHandle_t GridBLAS::gridblasHandle;
-int              GridBLAS::gridblasInit;
-NAMESPACE_END(Grid);
-

Grid/algorithms/blas/MomentumProject.h

@@ -1,300 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: MomentumProject.h
-
-    Copyright (C) 2025
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-NAMESPACE_BEGIN(Grid);
-/* 
-   MultiMomProject
-
-   Import vectors -> nxyz x (ncomponent x nt)
-   Import complex phases -> nmom x nxy
-
-   apply = via (possibly batched) GEMM
-*/
-template<class Field, class ComplexField>
-class MomentumProject
-{
-public:
-
-  typedef typename Field::scalar_type   scalar;
-  typedef typename Field::scalar_object scalar_object;
-
-  GridBase *grid;
-  uint64_t nmom;
-  uint64_t nxyz;
-  uint64_t nt;
-  uint64_t nbtw;
-  uint64_t words;
-
-  deviceVector<scalar> BLAS_V;      // 
-  deviceVector<scalar> BLAS_M;      // 
-  deviceVector<scalar> BLAS_P;      // 
-  
-  MomentumProject(){};
- ~MomentumProject(){ Deallocate(); };
-  
-  void Deallocate(void)
-  {
-    grid=nullptr;
-    nmom=0;
-    nxyz=0;
-    nt=0;
-    nbtw=0;
-    words=0;
-    BLAS_V.resize(0);
-    BLAS_M.resize(0);
-    BLAS_P.resize(0);
-  }
-  void Allocate(int _nmom,GridBase *_grid)
-  {
-    grid=_grid;
-    Coordinate ldims = grid->LocalDimensions();
-
-    nmom=_nmom;
-    nt   = ldims[grid->Nd()-1];
-    nxyz = grid->lSites()/nt;
-    words = sizeof(scalar_object)/sizeof(scalar);
-    nbtw = nt * words;
-
-    BLAS_V.resize (nxyz * nt * words );
-    BLAS_M.resize (nmom * nxyz       );
-    BLAS_P.resize (nmom * nt * words );
-  }
-  void ImportMomenta(const std::vector <ComplexField> &momenta)
-  {
-    GRID_ASSERT(momenta.size()==nmom);
-    //    might as well just make the momenta here
-    typedef typename Field::vector_object vobj;
-
-    int nd = grid->_ndimension;
-
-    uint64_t sz = BLAS_M.size();
-
-    GRID_ASSERT(momenta.size()==nmom)
-    GRID_ASSERT(momenta[0].Grid()==grid);
-    GRID_ASSERT(sz = nxyz * nmom);
-    
-    Coordinate rdimensions = grid->_rdimensions;
-    Coordinate ldims       = grid->LocalDimensions();
-    int64_t osites         = grid->oSites();
-    Coordinate simd        = grid->_simd_layout;
-    const int Nsimd        = vobj::Nsimd();
-    uint64_t lwords        = words; // local variable for copy in to GPU
-    int64_t Nxyz = nxyz;
-    auto blasData_p  = &BLAS_M[0];
-    for(int m=0;m<momenta.size();m++){
-
-      autoView( Data   , momenta[m], AcceleratorRead);
-      auto Data_p  = &Data[0];
-
-      accelerator_for(xyz,nxyz,1,{
-	  //////////////////////////////////////////
-	  // isite -- map lane within buffer to lane within lattice
-	  ////////////////////////////////////////////
-	    Coordinate lcoor(nd,0);
-	    Lexicographic::CoorFromIndex(lcoor,xyz,ldims);
-	    
-	    Coordinate icoor(nd);
-	    Coordinate ocoor(nd);
-	    for (int d = 0; d < nd; d++) {
-	      icoor[d] = lcoor[d]/rdimensions[d];
-	      ocoor[d] = lcoor[d]%rdimensions[d];
-	    }
-	    int64_t osite;
-	    int64_t isite;
-	    Lexicographic::IndexFromCoor(ocoor,osite,rdimensions);
-	    Lexicographic::IndexFromCoor(icoor,isite,simd);
-	    
-	    // BLAS_M[nmom][slice_vol]
-	    // Fortran Column major BLAS layout is M_xyz,mom
-	    scalar data = extractLane(isite,Data[osite]);
-	    uint64_t idx = xyz+m*Nxyz;
-	    blasData_p[idx] = data;
-	});
-    }
-  }
-  void ImportVector(Field &vec)
-  {
-    typedef typename Field::vector_object vobj;
-
-    int nd = grid->_ndimension;
-
-    uint64_t sz = BLAS_V.size();
-
-    GRID_ASSERT(sz = nxyz * words * nt);
-    
-    Coordinate rdimensions = grid->_rdimensions;
-    Coordinate ldims= grid->LocalDimensions();
-    int64_t osites = grid->oSites();
-    Coordinate simd = grid->_simd_layout;
-    const int Nsimd = vobj::Nsimd();
-    uint64_t lwords= words; // local variable for copy in to GPU
-
-    auto blasData_p  = &BLAS_V[0];
-    autoView( Data   , vec, AcceleratorRead);
-    auto Data_p  = &Data[0];
-
-    int64_t nwords = words;// for capture
-    int64_t Nt     = nt;// for capture
-    
-    accelerator_for(sf,osites,Nsimd,{
-#ifdef GRID_SIMT
-        {
-	  int lane=acceleratorSIMTlane(Nsimd); // buffer lane
-#else
-	  for(int lane=0;lane<Nsimd;lane++) {
-#endif
-	  //////////////////////////////////////////
-	  // isite -- map lane within buffer to lane within lattice
-	  ////////////////////////////////////////////
-	    Coordinate lcoor(nd,0);
-	    Coordinate icoor(nd);
-	    Coordinate ocoor(nd);
-	    
-	    Lexicographic::CoorFromIndex(icoor,lane,simd);
-	    Lexicographic::CoorFromIndex(ocoor,sf,rdimensions);
-
-	  
-	    int64_t l_xyz = 0;
-	    for (int d = 0; d < nd; d++) {
-	      lcoor[d] = rdimensions[d]*icoor[d] + ocoor[d];
-	    }
-	    uint64_t l_t   = lcoor[nd-1];
-
-	    Coordinate xyz_coor = lcoor;
-	    xyz_coor[nd-1] =0;
-	    Lexicographic::IndexFromCoor(xyz_coor,l_xyz,ldims);
-
-	    
-	    scalar_object data = extractLane(lane,Data[sf]);
-	    scalar *data_words = (scalar *) &data;
-	    for(int w = 0 ; w < nwords; w++) {
-	      // BLAS_V[slice_vol][nt][words]
-	      // Fortran Column major BLAS layout is V_(t,w)_xyz
-	      uint64_t idx = w+l_t*nwords + l_xyz * nwords * Nt;
-	      blasData_p[idx] = data_words[w];
-	    }
-#ifdef GRID_SIMT
-	}
-#else
-	}
-#endif
-	});
-  }
-  void ExportMomentumProjection(std::vector<typename Field::scalar_object> &projection)
-  {
-    projection.resize(nmom*nt);
-    acceleratorCopyFromDevice(&BLAS_P[0],(scalar *)&projection[0],BLAS_P.size()*sizeof(scalar));
-    // Could decide on a layout late?
-  }
-
-  // Row major layout "C" order:
-  // BLAS_V[slice_vol][nt][words]
-  // BLAS_M[nmom][slice_vol]
-  // BLAS_P[nmom][nt][words]
-  //
-  // Fortran Column major BLAS layout is V_(w,t)_xyz
-  // Fortran Column major BLAS layout is M_xyz,mom
-  // Fortran Column major BLAS layout is P_(w,t),mom
-  //
-  // Projected
-  //
-  // P = (V * M)_(w,t),mom
-  //
-  void Project(Field &data,std::vector< typename Field::scalar_object > & projected_gdata)
-  {
-    double t_import=0;
-    double t_export=0;
-    double t_gemm  =0;
-    double t_allreduce=0;
-    t_import-=usecond();
-    this->ImportVector(data);
-
-    std::vector< typename Field::scalar_object > projected_planes;
-
-    deviceVector<scalar *> Vd(1);
-    deviceVector<scalar *> Md(1);
-    deviceVector<scalar *> Pd(1);
-
-    scalar * Vh = & BLAS_V[0];
-    scalar * Mh = & BLAS_M[0];
-    scalar * Ph = & BLAS_P[0];
-
-    acceleratorPut(Vd[0],Vh);
-    acceleratorPut(Md[0],Mh);
-    acceleratorPut(Pd[0],Ph);
-    t_import+=usecond();
-
-    GridBLAS BLAS;
-
-    /////////////////////////////////////////
-    // P_im = VMmx . Vxi
-    /////////////////////////////////////////
-    t_gemm-=usecond();
-    BLAS.gemmBatched(GridBLAS_OP_N,GridBLAS_OP_N, 
-    		     words*nt,nmom,nxyz,
-		     scalar(1.0),
-		     Vd,
-		     Md,
-		     scalar(0.0),  // wipe out result
-		     Pd);
-    BLAS.synchronise();
-    t_gemm+=usecond();
-
-    t_export-=usecond();
-    ExportMomentumProjection(projected_planes); // resizes
-    t_export+=usecond();
-
-    /////////////////////////////////
-    // Reduce across MPI ranks
-    /////////////////////////////////
-    int nd = grid->Nd();
-    int gt = grid->GlobalDimensions()[nd-1];
-    int lt = grid->LocalDimensions()[nd-1];
-    projected_gdata.resize(gt*nmom);
-    for(int t=0;t<gt*nmom;t++){ // global Nt array with zeroes for stuff not on this node
-      projected_gdata[t]=Zero();
-    }
-    for(int t=0;t<lt;t++){
-    for(int m=0;m<nmom;m++){
-      int st = grid->LocalStarts()[nd-1];
-      projected_gdata[t+st + gt*m] = projected_planes[t+lt*m];
-    }}
-    t_allreduce-=usecond();
-    grid->GlobalSumVector((scalar *)&projected_gdata[0],gt*nmom*words);
-    t_allreduce+=usecond();
-
-    std::cout << GridLogPerformance<<" MomentumProject t_import  "<<t_import<<"us"<<std::endl;
-    std::cout << GridLogPerformance<<" MomentumProject t_export  "<<t_export<<"us"<<std::endl;
-    std::cout << GridLogPerformance<<" MomentumProject t_gemm    "<<t_gemm<<"us"<<std::endl;
-    std::cout << GridLogPerformance<<" MomentumProject t_reduce  "<<t_allreduce<<"us"<<std::endl;
-
-  }
-};
-
-NAMESPACE_END(Grid);

Grid/algorithms/deflation/MultiRHSBlockCGLinalg.h

@@ -1,376 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: MultiRHSBlockCGLinalg.h
-
-    Copyright (C) 2024
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-NAMESPACE_BEGIN(Grid);
-
-
-/* Need helper object for BLAS accelerated mrhs blockCG */
-template<class Field>
-class MultiRHSBlockCGLinalg
-{
-public:
-
-  typedef typename Field::scalar_type   scalar;
-  typedef typename Field::scalar_object scalar_object;
-  typedef typename Field::vector_object vector_object;
-
-  deviceVector<scalar> BLAS_X;      // nrhs x vol -- the sources
-  deviceVector<scalar> BLAS_Y;      // nrhs x vol -- the result
-  deviceVector<scalar> BLAS_C;      // nrhs x nrhs -- the coefficients 
-  deviceVector<scalar> BLAS_Cred;   // nrhs x nrhs x oSites -- reduction buffer
-  deviceVector<scalar *> Xdip;
-  deviceVector<scalar *> Ydip;
-  deviceVector<scalar *> Cdip;
-  
-  MultiRHSBlockCGLinalg() {};
-  ~MultiRHSBlockCGLinalg(){ Deallocate(); };
-  
-  void Deallocate(void)
-  {
-    Xdip.resize(0);
-    Ydip.resize(0);
-    Cdip.resize(0);
-    BLAS_Cred.resize(0);
-    BLAS_C.resize(0);
-    BLAS_X.resize(0);
-    BLAS_Y.resize(0);
-  }
-  void MaddMatrix(std::vector<Field> &AP, Eigen::MatrixXcd &m , const std::vector<Field> &X,const std::vector<Field> &Y,RealD scale=1.0)
-  {
-    std::vector<Field> Y_copy(AP.size(),AP[0].Grid());
-    for(int r=0;r<AP.size();r++){
-      Y_copy[r] = Y[r];
-    }
-    MulMatrix(AP,m,X);
-    for(int r=0;r<AP.size();r++){
-      AP[r] = scale*AP[r]+Y_copy[r];
-    }
-  }
-  void MulMatrix(std::vector<Field> &Y, Eigen::MatrixXcd &m , const std::vector<Field> &X)
-  {
-    typedef typename Field::scalar_type scomplex;
-    GridBase *grid;
-    uint64_t vol;
-    uint64_t words;
-
-    int nrhs = Y.size();
-    grid  = X[0].Grid();
-    vol   = grid->lSites();
-    words = sizeof(scalar_object)/sizeof(scalar);
-    int64_t vw = vol * words;
-
-    RealD t0 = usecond();
-    BLAS_X.resize(nrhs * vw); // cost free if size doesn't change
-    BLAS_Y.resize(nrhs * vw); // cost free if size doesn't change
-    BLAS_C.resize(nrhs * nrhs);// cost free if size doesn't change
-    RealD t1 = usecond();
-
-    /////////////////////////////////////////////
-    // Copy in the multi-rhs sources
-    /////////////////////////////////////////////
-    for(int r=0;r<nrhs;r++){
-      int64_t offset = r*vw;
-      autoView(x_v,X[r],AcceleratorRead);
-      acceleratorCopyDeviceToDevice(&x_v[0],&BLAS_X[offset],sizeof(scalar_object)*vol);
-    }
-
-    // Assumes Eigen storage contiguous
-    acceleratorCopyToDevice(&m(0,0),&BLAS_C[0],BLAS_C.size()*sizeof(scalar));
-    
-  /*
-   * in Fortran column major notation (cuBlas order)
-   *
-   * Xxr = [X1(x)][..][Xn(x)]
-   * Yxr = [Y1(x)][..][Ym(x)]
-   * Y = X . C
-   */
-    deviceVector<scalar *> Xd(1);
-    deviceVector<scalar *> Yd(1);
-    deviceVector<scalar *> Cd(1);
-
-    scalar * Xh = & BLAS_X[0];
-    scalar * Yh = & BLAS_Y[0];
-    scalar * Ch = & BLAS_C[0];
-
-    acceleratorPut(Xd[0],Xh);
-    acceleratorPut(Yd[0],Yh);
-    acceleratorPut(Cd[0],Ch);
-
-    RealD t2 = usecond();
-    GridBLAS BLAS;
-    /////////////////////////////////////////
-    // Y = X*C (transpose?)
-    /////////////////////////////////////////
-    BLAS.gemmBatched(GridBLAS_OP_N,GridBLAS_OP_N, 
-    		     vw,nrhs,nrhs,
-		     scalar(1.0),
-		     Xd,
-		     Cd,
-		     scalar(0.0),  // wipe out Y
-		     Yd);
-    BLAS.synchronise();
-    RealD t3 = usecond();
-
-    // Copy back Y = m X 
-    for(int r=0;r<nrhs;r++){
-      int64_t offset = r*vw;
-      autoView(y_v,Y[r],AcceleratorWrite);
-      acceleratorCopyDeviceToDevice(&BLAS_Y[offset],&y_v[0],sizeof(scalar_object)*vol);
-    }    
-    RealD t4 = usecond();
-    std::cout <<GridLogPerformance << "MulMatrix alloc    took "<< t1-t0<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "MulMatrix preamble took "<< t2-t1<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "MulMatrix blas     took "<< t3-t2<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "MulMatrix copy     took "<< t4-t3<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "MulMatrix total "<< t4-t0<<" us"<<std::endl;
-  }
-  
-  void InnerProductMatrix(Eigen::MatrixXcd &m , const std::vector<Field> &X, const std::vector<Field> &Y)
-  {
-#if 0    
-    int nrhs;
-    GridBase *grid;
-    uint64_t vol;
-    uint64_t words;
-
-    nrhs = X.size();
-    GRID_ASSERT(X.size()==Y.size());
-    conformable(X[0],Y[0]);
-
-    grid  = X[0].Grid();
-    vol   = grid->lSites();
-    words = sizeof(scalar_object)/sizeof(scalar);
-    int64_t vw = vol * words;
-
-    RealD t0 = usecond();
-    BLAS_X.resize(nrhs * vw); // cost free if size doesn't change
-    BLAS_Y.resize(nrhs * vw); // cost free if size doesn't change
-    BLAS_C.resize(nrhs * nrhs);// cost free if size doesn't change
-    RealD t1 = usecond();
-
-    /////////////////////////////////////////////
-    // Copy in the multi-rhs sources
-    /////////////////////////////////////////////
-    for(int r=0;r<nrhs;r++){
-      int64_t offset = r*vw;
-      autoView(x_v,X[r],AcceleratorRead);
-      acceleratorCopyDeviceToDevice(&x_v[0],&BLAS_X[offset],sizeof(scalar_object)*vol);
-      autoView(y_v,Y[r],AcceleratorRead);
-      acceleratorCopyDeviceToDevice(&y_v[0],&BLAS_Y[offset],sizeof(scalar_object)*vol);
-    }
-    RealD t2 = usecond();
-
-  /*
-   * in Fortran column major notation (cuBlas order)
-   *
-   * Xxr = [X1(x)][..][Xn(x)]
-   *
-   * Yxr = [Y1(x)][..][Ym(x)]
-   *
-   * C_rs = X^dag Y
-   */
-    deviceVector<scalar *> Xd(1);
-    deviceVector<scalar *> Yd(1);
-    deviceVector<scalar *> Cd(1);
-
-    scalar * Xh = & BLAS_X[0];
-    scalar * Yh = & BLAS_Y[0];
-    scalar * Ch = & BLAS_C[0];
-
-    acceleratorPut(Xd[0],Xh);
-    acceleratorPut(Yd[0],Yh);
-    acceleratorPut(Cd[0],Ch);
-
-    GridBLAS BLAS;
-
-    RealD t3 = usecond();
-    /////////////////////////////////////////
-    // C_rs = X^dag Y
-    /////////////////////////////////////////
-    BLAS.gemmBatched(GridBLAS_OP_C,GridBLAS_OP_N, 
-    		     nrhs,nrhs,vw,
-		     ComplexD(1.0),
-		     Xd,
-		     Yd,
-		     ComplexD(0.0),  // wipe out C
-		     Cd);
-    BLAS.synchronise();
-    RealD t4 = usecond();
-
-    std::vector<scalar> HOST_C(BLAS_C.size());      // nrhs . nrhs -- the coefficients 
-    acceleratorCopyFromDevice(&BLAS_C[0],&HOST_C[0],BLAS_C.size()*sizeof(scalar));
-    grid->GlobalSumVector(&HOST_C[0],nrhs*nrhs);
-
-    RealD t5 = usecond();
-    for(int rr=0;rr<nrhs;rr++){
-      for(int r=0;r<nrhs;r++){
-	int off = r+nrhs*rr;
-	m(r,rr)=HOST_C[off];
-      }
-    }
-    RealD t6 = usecond();
-    uint64_t M=nrhs;
-    uint64_t N=nrhs;
-    uint64_t K=vw;
-    RealD bytes = 1.0*sizeof(ComplexD)*(M*N*2+N*K+M*K);
-    RealD flops = 8.0*M*N*K;
-    flops = flops/(t4-t3)/1.e3;
-    bytes = bytes/(t4-t3)/1.e3;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix m,n,k "<< M<<","<<N<<","<<K<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix alloc t1 "<< t1-t0<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix cp    t2 "<< t2-t1<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix setup t3 "<< t3-t2<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix blas t4 "<< t4-t3<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix blas    "<< flops<<" GF/s"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix blas    "<< bytes<<" GB/s"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix gsum t5 "<< t5-t4<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix cp   t6 "<< t6-t5<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix took "<< t6-t0<<" us"<<std::endl;
-#else
-    int nrhs;
-    GridBase *grid;
-    uint64_t vol;
-    uint64_t words;
-
-    nrhs = X.size();
-    GRID_ASSERT(X.size()==Y.size());
-    conformable(X[0],Y[0]);
-
-    grid  = X[0].Grid();
-    int rd0 =  grid->_rdimensions[0] * grid->_rdimensions[1];
-    vol   = grid->oSites()/rd0;
-    words = rd0*sizeof(vector_object)/sizeof(scalar);
-    int64_t vw = vol * words;
-    GRID_ASSERT(vw == grid->lSites()*sizeof(scalar_object)/sizeof(scalar));
-
-    RealD t0 = usecond();
-    BLAS_X.resize(nrhs * vw); // cost free if size doesn't change
-    BLAS_Y.resize(nrhs * vw); // cost free if size doesn't change
-    BLAS_Cred.resize(nrhs * nrhs * vol);// cost free if size doesn't change
-    RealD t1 = usecond();
-
-    /////////////////////////////////////////////
-    // Copy in the multi-rhs sources -- layout batched BLAS ready
-    /////////////////////////////////////////////
-    for(int r=0;r<nrhs;r++){
-      autoView(x_v,X[r],AcceleratorRead);
-      autoView(y_v,Y[r],AcceleratorRead);
-      scalar *from_x=(scalar *)&x_v[0];
-      scalar *from_y=(scalar *)&y_v[0];
-      scalar *BX = &BLAS_X[0];
-      scalar *BY = &BLAS_Y[0];
-      accelerator_for(ssw,vw,1,{
-	  uint64_t ss=ssw/words;
-	  uint64_t  w=ssw%words;
-	  uint64_t offset = w+r*words+ss*nrhs*words; // [ss][rhs][words]
-	  BX[offset] = from_x[ssw];
-	  BY[offset] = from_y[ssw];
-	});
-    }
-    RealD t2 = usecond();
-
-  /*
-   * in Fortran column major notation (cuBlas order)
-   *
-   * Xxr = [X1(x)][..][Xn(x)]
-   *
-   * Yxr = [Y1(x)][..][Ym(x)]
-   *
-   * C_rs = X^dag Y
-   */
-    Xdip.resize(vol);
-    Ydip.resize(vol);
-    Cdip.resize(vol);
-    std::vector<scalar *> Xh(vol);
-    std::vector<scalar *> Yh(vol);
-    std::vector<scalar *> Ch(vol);
-    for(uint64_t ss=0;ss<vol;ss++){
-
-      Xh[ss] = & BLAS_X[ss*nrhs*words];
-      Yh[ss] = & BLAS_Y[ss*nrhs*words];
-      Ch[ss] = & BLAS_Cred[ss*nrhs*nrhs];
-
-    }
-    acceleratorCopyToDevice(&Xh[0],&Xdip[0],vol*sizeof(scalar *));
-    acceleratorCopyToDevice(&Yh[0],&Ydip[0],vol*sizeof(scalar *));
-    acceleratorCopyToDevice(&Ch[0],&Cdip[0],vol*sizeof(scalar *));
-    
-    GridBLAS BLAS;
-
-    RealD t3 = usecond();
-    /////////////////////////////////////////
-    // C_rs = X^dag Y
-    /////////////////////////////////////////
-    BLAS.gemmBatched(GridBLAS_OP_C,GridBLAS_OP_N, 
-    		     nrhs,nrhs,words,
-		     ComplexD(1.0),
-		     Xdip,
-		     Ydip,
-		     ComplexD(0.0),  // wipe out C
-		     Cdip);
-    BLAS.synchronise();
-    RealD t4 = usecond();
-
-    std::vector<scalar> HOST_C(BLAS_Cred.size());      // nrhs . nrhs -- the coefficients 
-    acceleratorCopyFromDevice(&BLAS_Cred[0],&HOST_C[0],BLAS_Cred.size()*sizeof(scalar));
-
-    RealD t5 = usecond();
-    m = Eigen::MatrixXcd::Zero(nrhs,nrhs);
-    for(int ss=0;ss<vol;ss++){
-      Eigen::Map<Eigen::MatrixXcd> eC((std::complex<double> *)&HOST_C[ss*nrhs*nrhs],nrhs,nrhs);
-      m = m + eC;
-    }
-    RealD t6l = usecond();
-    grid->GlobalSumVector((scalar *) &m(0,0),nrhs*nrhs);
-    RealD t6 = usecond();
-    uint64_t M=nrhs;
-    uint64_t N=nrhs;
-    uint64_t K=vw;
-    RealD xybytes = grid->lSites()*sizeof(scalar_object);
-    RealD bytes = 1.0*sizeof(ComplexD)*(M*N*2+N*K+M*K);
-    RealD flops = 8.0*M*N*K;
-    flops = flops/(t4-t3)/1.e3;
-    bytes = bytes/(t4-t3)/1.e3;
-    xybytes = 4*xybytes/(t2-t1)/1.e3;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix m,n,k "<< M<<","<<N<<","<<K<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix alloc t1 "<< t1-t0<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix cp    t2 "<< t2-t1<<" us "<<xybytes<<" GB/s"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix setup t3 "<< t3-t2<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix blas t4 "<< t4-t3<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix blas    "<< flops<<" GF/s"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix blas    "<< bytes<<" GB/s"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix cp     t5 "<< t5-t4<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix lsum   t6l "<< t6l-t5<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix gsum   t6 "<< t6-t6l<<" us"<<std::endl;
-    std::cout <<GridLogPerformance<< "InnerProductMatrix took "<< t6-t0<<" us"<<std::endl;
-#endif
-  }
-};
-
-NAMESPACE_END(Grid);

Grid/algorithms/deflation/MultiRHSBlockProject.h

@@ -1,513 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: MultiRHSDeflation.h
-
-    Copyright (C) 2023
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-NAMESPACE_BEGIN(Grid);
-
-
-/* 
-   MultiRHS block projection
-
-   Import basis -> nblock x nbasis x  (block x internal) 
-   Import vector of fine lattice objects -> nblock x nrhs x (block x internal) 
-
-   => coarse_(nrhs x nbasis )^block = via batched GEMM
-
-//template<class vobj,class CComplex,int nbasis,class VLattice>
-//inline void blockProject(Lattice<iVector<CComplex,nbasis > > &coarseData,
-//			   const VLattice &fineData,
-//			   const VLattice &Basis)
-*/
-
-template<class Field>
-class MultiRHSBlockProject
-{
-public:
-
-  typedef typename Field::scalar_type   scalar;
-  typedef typename Field::scalar_object scalar_object;
-  typedef Field Fermion;
-
-  int nbasis;
-  GridBase *coarse_grid;
-  GridBase *fine_grid;
-  uint64_t block_vol;
-  uint64_t fine_vol;
-  uint64_t coarse_vol;
-  uint64_t words;
-
-  // Row major layout "C" order:
-  // BLAS_V[coarse_vol][nbasis][block_vol][words]
-  // BLAS_F[coarse_vol][nrhs][block_vol][words]
-  // BLAS_C[coarse_vol][nrhs][nbasis]
-  /*
-   * in Fortran column major notation (cuBlas order)
-   *
-   * Vxb = [v1(x)][..][vn(x)] ... x coarse vol
-   *
-   * Fxr = [r1(x)][..][rm(x)] ... x coarse vol
-   *
-   * Block project:
-   * C_br = V^dag F x coarse vol
-   *
-   * Block promote:
-   * F_xr = Vxb Cbr x coarse_vol
-   */  
-  deviceVector<scalar> BLAS_V;      // words * block_vol * nbasis x coarse_vol 
-  deviceVector<scalar> BLAS_F;      // nrhs x fine_vol * words   -- the sources
-  deviceVector<scalar> BLAS_C;      // nrhs x coarse_vol * nbasis -- the coarse coeffs
-
-  RealD blasNorm2(deviceVector<scalar> &blas)
-  {
-    scalar ss(0.0);
-    std::vector<scalar> tmp(blas.size());
-    acceleratorCopyFromDevice(&blas[0],&tmp[0],blas.size()*sizeof(scalar));
-    for(int64_t s=0;s<blas.size();s++){
-      ss=ss+tmp[s]*adj(tmp[s]);
-    }
-    coarse_grid->GlobalSum(ss);
-    return real(ss);
-  }
-  
-  MultiRHSBlockProject(){};
- ~MultiRHSBlockProject(){ Deallocate(); };
-  
-  void Deallocate(void)
-  {
-    nbasis=0;
-    coarse_grid=nullptr;
-    fine_grid=nullptr;
-    fine_vol=0;
-    block_vol=0;
-    coarse_vol=0;
-    words=0;
-    BLAS_V.resize(0);
-    BLAS_F.resize(0);
-    BLAS_C.resize(0);
-  }
-  void Allocate(int _nbasis,GridBase *_fgrid,GridBase *_cgrid)
-  {
-    nbasis=_nbasis;
-
-    fine_grid=_fgrid;
-    coarse_grid=_cgrid;
-
-    fine_vol   = fine_grid->lSites();
-    coarse_vol = coarse_grid->lSites();
-    block_vol = fine_vol/coarse_vol;
-    
-    words = sizeof(scalar_object)/sizeof(scalar);
-
-    BLAS_V.resize (fine_vol * words * nbasis );
-  }
-  void ImportFineGridVectors(std::vector <Field > &vecs, deviceVector<scalar> &blas)
-  {
-    int nvec = vecs.size();
-    typedef typename Field::vector_object vobj;
-    //    std::cout << GridLogMessage <<" BlockProjector importing "<<nvec<< " fine grid vectors" <<std::endl;
-
-    GRID_ASSERT(vecs[0].Grid()==fine_grid);
-
-    subdivides(coarse_grid,fine_grid); // require they map
-
-    int _ndimension = coarse_grid->_ndimension;
-    GRID_ASSERT(block_vol == fine_grid->oSites() / coarse_grid->oSites());
-    
-    Coordinate  block_r      (_ndimension);
-    for(int d=0 ; d<_ndimension;d++){
-      block_r[d] = fine_grid->_rdimensions[d] / coarse_grid->_rdimensions[d];
-    }
-
-    uint64_t sz = blas.size();
-
-    acceleratorMemSet(&blas[0],0,blas.size()*sizeof(scalar));
-
-    Coordinate fine_rdimensions = fine_grid->_rdimensions;
-    Coordinate coarse_rdimensions = coarse_grid->_rdimensions;
-    int64_t bv= block_vol;
-    for(int v=0;v<vecs.size();v++){
-
-      //      std::cout << " BlockProjector importing vector"<<v<<" "<<norm2(vecs[v])<<std::endl;
-      autoView( fineData   , vecs[v], AcceleratorRead);
-
-      auto blasData_p  = &blas[0];
-      auto fineData_p  = &fineData[0];
-
-      int64_t osites = fine_grid->oSites();
-
-      // loop over fine sites
-      const int Nsimd = vobj::Nsimd();
-      //      std::cout << "sz "<<sz<<std::endl;
-      //      std::cout << "prod "<<Nsimd * coarse_grid->oSites() * block_vol * nvec * words<<std::endl;
-      GRID_ASSERT(sz == Nsimd * coarse_grid->oSites() * block_vol * nvec * words);
-      uint64_t lwords= words; // local variable for copy in to GPU
-      accelerator_for(sf,osites,Nsimd,{
-#ifdef GRID_SIMT
-        {
-	  int lane=acceleratorSIMTlane(Nsimd); // buffer lane
-#else
-	  for(int lane=0;lane<Nsimd;lane++) {
-#endif
-	  // One thread per fine site
-	  Coordinate coor_f(_ndimension);
-	  Coordinate coor_b(_ndimension);
-	  Coordinate coor_c(_ndimension);
-
-	  // Fine site to fine coor
-	  Lexicographic::CoorFromIndex(coor_f,sf,fine_rdimensions);
-
-	  for(int d=0;d<_ndimension;d++) coor_b[d] = coor_f[d]%block_r[d];
-	  for(int d=0;d<_ndimension;d++) coor_c[d] = coor_f[d]/block_r[d];
-	  
-	  int sc;// coarse site
-	  int sb;// block site
-	  Lexicographic::IndexFromCoor(coor_c,sc,coarse_rdimensions);
-	  Lexicographic::IndexFromCoor(coor_b,sb,block_r);
-
-          scalar_object data = extractLane(lane,fineData[sf]);
-
-	  // BLAS layout address calculation
-	  // words * block_vol * nbasis x coarse_vol
-	  // coarse oSite x block vole x lanes
-	  int64_t site = (lane*osites + sc*bv)*nvec
-   	               + v*bv
-	               + sb;
-
-	  //	  GRID_ASSERT(site*lwords<sz);
-
-	  scalar_object * ptr = (scalar_object *)&blasData_p[site*lwords];
-
-	  *ptr = data;
-#ifdef GRID_SIMT
-	}
-#else
-	}
-#endif
-      });
-      //      std::cout << " import fine Blas norm "<<blasNorm2(blas)<<std::endl;
-      //      std::cout << " BlockProjector imported vector"<<v<<std::endl;
-    }
-  }
-  void ExportFineGridVectors(std::vector <Field> &vecs, deviceVector<scalar> &blas)
-  {
-    typedef typename Field::vector_object vobj;
-
-    int nvec = vecs.size();
-
-    GRID_ASSERT(vecs[0].Grid()==fine_grid);
-
-    subdivides(coarse_grid,fine_grid); // require they map
-
-    int _ndimension = coarse_grid->_ndimension;
-    GRID_ASSERT(block_vol == fine_grid->oSites() / coarse_grid->oSites());
-    
-    Coordinate  block_r      (_ndimension);
-    for(int d=0 ; d<_ndimension;d++){
-      block_r[d] = fine_grid->_rdimensions[d] / coarse_grid->_rdimensions[d];
-    }
-    Coordinate fine_rdimensions = fine_grid->_rdimensions;
-    Coordinate coarse_rdimensions = coarse_grid->_rdimensions;
-
-    //    std::cout << " export fine Blas norm "<<blasNorm2(blas)<<std::endl;
-
-    int64_t bv= block_vol;
-    for(int v=0;v<vecs.size();v++){
-
-      autoView( fineData   , vecs[v], AcceleratorWrite);
-
-      auto blasData_p  = &blas[0];
-      auto fineData_p    = &fineData[0];
-
-      int64_t osites = fine_grid->oSites();
-      uint64_t lwords = words;
-      //      std::cout << " Nsimd is "<<vobj::Nsimd() << std::endl;
-      //      std::cout << " lwords is "<<lwords << std::endl;
-      //      std::cout << " sizeof(scalar_object) is "<<sizeof(scalar_object) << std::endl;
-      // loop over fine sites
-      accelerator_for(sf,osites,vobj::Nsimd(),{
-      
-#ifdef GRID_SIMT
-        {
-	  int lane=acceleratorSIMTlane(vobj::Nsimd()); // buffer lane
-#else
-	  for(int lane=0;lane<vobj::Nsimd();lane++) {
-#endif
-	  // One thread per fine site
-	  Coordinate coor_f(_ndimension);
-	  Coordinate coor_b(_ndimension);
-	  Coordinate coor_c(_ndimension);
-
-	  Lexicographic::CoorFromIndex(coor_f,sf,fine_rdimensions);
-
-	  for(int d=0;d<_ndimension;d++) coor_b[d] = coor_f[d]%block_r[d];
-	  for(int d=0;d<_ndimension;d++) coor_c[d] = coor_f[d]/block_r[d];
-	  
-	  int sc;
-	  int sb;
-	  Lexicographic::IndexFromCoor(coor_c,sc,coarse_rdimensions);
-	  Lexicographic::IndexFromCoor(coor_b,sb,block_r);
-
-	  // BLAS layout address calculation
-	  // words * block_vol * nbasis x coarse_vol 	  
-	  int64_t site = (lane*osites + sc*bv)*nvec
-   	               + v*bv
-	               + sb;
-
-	  scalar_object * ptr = (scalar_object *)&blasData_p[site*lwords];
-
-	  scalar_object data = *ptr;
-
-	  insertLane(lane,fineData[sf],data);
-#ifdef GRID_SIMT
-	}
-#else
-	}
-#endif
-      });
-    }
-  }
-  template<class vobj>
-  void ImportCoarseGridVectors(std::vector <Lattice<vobj> > &vecs, deviceVector<scalar> &blas)
-  {
-    int nvec = vecs.size();
-    typedef typename vobj::scalar_object coarse_scalar_object;
-
-    //    std::cout << " BlockProjector importing "<<nvec<< " coarse grid vectors" <<std::endl;
-
-    GRID_ASSERT(vecs[0].Grid()==coarse_grid);
-
-    int _ndimension = coarse_grid->_ndimension;
-
-    uint64_t sz = blas.size();
-
-    Coordinate coarse_rdimensions = coarse_grid->_rdimensions;
-    
-    for(int v=0;v<vecs.size();v++){
-
-      //      std::cout << " BlockProjector importing coarse vector"<<v<<" "<<norm2(vecs[v])<<std::endl;
-      autoView( coarseData   , vecs[v], AcceleratorRead);
-
-      auto blasData_p  = &blas[0];
-      auto coarseData_p  = &coarseData[0];
-
-      int64_t osites = coarse_grid->oSites();
-
-      // loop over fine sites
-      const int Nsimd = vobj::Nsimd();
-      uint64_t cwords=sizeof(typename vobj::scalar_object)/sizeof(scalar);
-      GRID_ASSERT(cwords==nbasis);
-      
-      accelerator_for(sc,osites,Nsimd,{
-#ifdef GRID_SIMT
-        {
-	  int lane=acceleratorSIMTlane(Nsimd); // buffer lane
-#else
-	  for(int lane=0;lane<Nsimd;lane++) {
-#endif
-           // C_br per site
-	    int64_t blas_site = (lane*osites + sc)*nvec*cwords + v*cwords;
-	    
-	    coarse_scalar_object data = extractLane(lane,coarseData[sc]);
-
-	    coarse_scalar_object * ptr = (coarse_scalar_object *)&blasData_p[blas_site];
-
-	    *ptr = data;
-#ifdef GRID_SIMT
-	}
-#else
-	}
-#endif
-      });
-      //      std::cout << " import coarsee Blas norm "<<blasNorm2(blas)<<std::endl;
-    }
-  }
-  template<class vobj>
-  void ExportCoarseGridVectors(std::vector <Lattice<vobj> > &vecs, deviceVector<scalar> &blas)
-  {
-    int nvec = vecs.size();
-    typedef typename vobj::scalar_object coarse_scalar_object;
-    //    std::cout << GridLogMessage<<" BlockProjector exporting "<<nvec<< " coarse grid vectors" <<std::endl;
-
-    GRID_ASSERT(vecs[0].Grid()==coarse_grid);
-
-    int _ndimension = coarse_grid->_ndimension;
-    
-    uint64_t sz = blas.size();
-
-    Coordinate coarse_rdimensions = coarse_grid->_rdimensions;
-    
-    //    std::cout << " export coarsee Blas norm "<<blasNorm2(blas)<<std::endl;
-    for(int v=0;v<vecs.size();v++){
-
-      //  std::cout << " BlockProjector exporting coarse vector"<<v<<std::endl;
-      autoView( coarseData   , vecs[v], AcceleratorWrite);
-
-      auto blasData_p  = &blas[0];
-      auto coarseData_p  = &coarseData[0];
-
-      int64_t osites = coarse_grid->oSites();
-
-      // loop over fine sites
-      const int Nsimd = vobj::Nsimd();
-      uint64_t cwords=sizeof(typename vobj::scalar_object)/sizeof(scalar);
-      GRID_ASSERT(cwords==nbasis);
-      
-      accelerator_for(sc,osites,Nsimd,{
-	  // Wrap in a macro "FOR_ALL_LANES(lane,{ ... });
-#ifdef GRID_SIMT
-        {
-	  int lane=acceleratorSIMTlane(Nsimd); // buffer lane
-#else
-	  for(int lane=0;lane<Nsimd;lane++) {
-#endif
-	    int64_t blas_site = (lane*osites + sc)*nvec*cwords + v*cwords;
-	    coarse_scalar_object * ptr = (coarse_scalar_object *)&blasData_p[blas_site];
-	    coarse_scalar_object data = *ptr;
-	    insertLane(lane,coarseData[sc],data);
-#ifdef GRID_SIMT
-	}
-#else
-	}
-#endif
-      });
-    }
-  }
-  void ImportBasis(std::vector < Field > &vecs)
-  {
-    //    std::cout << " BlockProjector Import basis size "<<vecs.size()<<std::endl;
-    ImportFineGridVectors(vecs,BLAS_V);
-  }
-
-  template<class cobj>
-  void blockProject(std::vector<Field> &fine,std::vector< Lattice<cobj> > & coarse)
-  {
-    int nrhs=fine.size();
-    int _nbasis = sizeof(typename cobj::scalar_object)/sizeof(scalar);
-    //    std::cout << "blockProject nbasis " <<nbasis<<" " << _nbasis<<std::endl;
-    GRID_ASSERT(nbasis==_nbasis);
-    
-    BLAS_F.resize (fine_vol * words * nrhs );
-    BLAS_C.resize (coarse_vol * nbasis * nrhs );
-
-    /////////////////////////////////////////////
-    // Copy in the multi-rhs sources to same data layout
-    /////////////////////////////////////////////
-    //    std::cout << "BlockProject import fine"<<std::endl;
-    ImportFineGridVectors(fine,BLAS_F);
-    
-    deviceVector<scalar *> Vd(coarse_vol);
-    deviceVector<scalar *> Fd(coarse_vol);
-    deviceVector<scalar *> Cd(coarse_vol);
-
-    //    std::cout << "BlockProject pointers"<<std::endl;
-    for(int c=0;c<coarse_vol;c++){
-      // BLAS_V[coarse_vol][nbasis][block_vol][words]
-      // BLAS_F[coarse_vol][nrhs][block_vol][words]
-      // BLAS_C[coarse_vol][nrhs][nbasis]
-      scalar * Vh = & BLAS_V[c*nbasis*block_vol*words];
-      scalar * Fh = & BLAS_F[c*nrhs*block_vol*words];
-      scalar * Ch = & BLAS_C[c*nrhs*nbasis];
-
-      acceleratorPut(Vd[c],Vh);
-      acceleratorPut(Fd[c],Fh);
-      acceleratorPut(Cd[c],Ch);
-    }
-
-    GridBLAS BLAS;
-
-    //    std::cout << "BlockProject BLAS"<<std::endl;
-    int64_t vw = block_vol * words;
-    /////////////////////////////////////////
-    // C_br = V^dag R
-    /////////////////////////////////////////
-    BLAS.gemmBatched(GridBLAS_OP_C,GridBLAS_OP_N, 
-    		     nbasis,nrhs,vw,
-		     scalar(1.0),
-		     Vd,
-		     Fd,
-		     scalar(0.0),  // wipe out C
-		     Cd);
-    BLAS.synchronise();
-    //    std::cout << "BlockProject done"<<std::endl;
-    ExportCoarseGridVectors(coarse, BLAS_C);
-    //    std::cout << "BlockProject done"<<std::endl;
-
-  }
-
-  template<class cobj>
-  void blockPromote(std::vector<Field> &fine,std::vector<Lattice<cobj> > & coarse)
-  {
-    int nrhs=fine.size();
-    int _nbasis = sizeof(typename cobj::scalar_object)/sizeof(scalar);
-    GRID_ASSERT(nbasis==_nbasis);
-    
-    BLAS_F.resize (fine_vol * words * nrhs );
-    BLAS_C.resize (coarse_vol * nbasis * nrhs );
-
-    ImportCoarseGridVectors(coarse, BLAS_C);
-
-    GridBLAS BLAS;
-
-    deviceVector<scalar *> Vd(coarse_vol);
-    deviceVector<scalar *> Fd(coarse_vol);
-    deviceVector<scalar *> Cd(coarse_vol);
-
-    for(int c=0;c<coarse_vol;c++){
-      // BLAS_V[coarse_vol][nbasis][block_vol][words]
-      // BLAS_F[coarse_vol][nrhs][block_vol][words]
-      // BLAS_C[coarse_vol][nrhs][nbasis]
-      scalar * Vh = & BLAS_V[c*nbasis*block_vol*words];
-      scalar * Fh = & BLAS_F[c*nrhs*block_vol*words];
-      scalar * Ch = & BLAS_C[c*nrhs*nbasis];
-      acceleratorPut(Vd[c],Vh);
-      acceleratorPut(Fd[c],Fh);
-      acceleratorPut(Cd[c],Ch);
-    }
-
-    /////////////////////////////////////////
-    // Block promote:
-    // F_xr = Vxb Cbr (x coarse_vol)
-    /////////////////////////////////////////
-
-    int64_t vw = block_vol * words;
-    BLAS.gemmBatched(GridBLAS_OP_N,GridBLAS_OP_N, 
-    		     vw,nrhs,nbasis,
-		     scalar(1.0),
-		     Vd,
-		     Cd,
-		     scalar(0.0),  // wipe out C
-		     Fd);
-    BLAS.synchronise();
-    //    std::cout << " blas call done"<<std::endl;
-    
-    ExportFineGridVectors(fine, BLAS_F);
-    //    std::cout << " exported "<<std::endl;
-  }
-};
-
-NAMESPACE_END(Grid);

Grid/algorithms/deflation/MultiRHSDeflation.h

@@ -1,233 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: MultiRHSDeflation.h
-
-    Copyright (C) 2023
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-NAMESPACE_BEGIN(Grid);
-
-
-/* Need helper object for BLAS accelerated mrhs projection
-
-   i) MultiRHS Deflation
-
-   Import Evecs -> nev x vol x internal 
-   Import vector of Lattice objects -> nrhs x vol x internal
-   => Cij (nrhs x Nev) via GEMM.
-   => Guess  (nrhs x vol x internal)  = C x evecs (via GEMM)
-   Export
-
-   
-   ii) MultiRHS block projection
-
-   Import basis -> nblock x nbasis x  (block x internal) 
-   Import vector of fine lattice objects -> nblock x nrhs x (block x internal) 
-
-   => coarse_(nrhs x nbasis )^block = via batched GEMM
-
-   iii)   Alternate interface: 
-   Import higher dim Lattice object-> vol x nrhs layout
-   
-*/
-template<class Field>
-class MultiRHSDeflation
-{
-public:
-
-  typedef typename Field::scalar_type   scalar;
-  typedef typename Field::scalar_object scalar_object;
-
-  int nev;
-  std::vector<RealD> eval;
-  GridBase *grid;
-  uint64_t vol;
-  uint64_t words;
-  
-  deviceVector<scalar> BLAS_E;      //  nev x vol -- the eigenbasis   (up to a 1/sqrt(lambda))
-  deviceVector<scalar> BLAS_R;      // nrhs x vol -- the sources
-  deviceVector<scalar> BLAS_G;      // nrhs x vol -- the guess
-  deviceVector<scalar> BLAS_C;      // nrhs x nev -- the coefficients 
-  
-  MultiRHSDeflation(){};
-  ~MultiRHSDeflation(){ Deallocate(); };
-  
-  void Deallocate(void)
-  {
-    nev=0;
-    grid=nullptr;
-    vol=0;
-    words=0;
-    BLAS_E.resize(0);
-    BLAS_R.resize(0);
-    BLAS_C.resize(0);
-    BLAS_G.resize(0);
-  }
-  void Allocate(int _nev,GridBase *_grid)
-  {
-    nev=_nev;
-    grid=_grid;
-    vol   = grid->lSites();
-    words = sizeof(scalar_object)/sizeof(scalar);
-    eval.resize(nev);
-    BLAS_E.resize (vol * words * nev );
-    std::cout << GridLogMessage << " Allocate for "<<nev<<" eigenvectors and volume "<<vol<<std::endl;
-  }
-  void ImportEigenVector(Field &evec,RealD &_eval, int ev)
-  {
-    //    std::cout << " ev " <<ev<<" eval "<<_eval<< std::endl;
-    GRID_ASSERT(ev<eval.size());
-    eval[ev] = _eval;
-
-    int64_t offset = ev*vol*words;
-    autoView(v,evec,AcceleratorRead);
-    acceleratorCopyDeviceToDevice(&v[0],&BLAS_E[offset],sizeof(scalar_object)*vol);
-
-  }
-  void ImportEigenBasis(std::vector<Field> &evec,std::vector<RealD> &_eval)
-  {
-    ImportEigenBasis(evec,_eval,0,evec.size());
-  }
-  // Could use to import a batch of eigenvectors
-  void ImportEigenBasis(std::vector<Field> &evec,std::vector<RealD> &_eval, int _ev0, int _nev)
-  {
-    GRID_ASSERT(_ev0+_nev<=evec.size());
-
-    Allocate(_nev,evec[0].Grid());
-    
-    // Imports a sub-batch of eigenvectors, _ev0, ..., _ev0+_nev-1
-    for(int e=0;e<nev;e++){
-      std::cout << "Importing eigenvector "<<e<<" evalue "<<_eval[_ev0+e]<<std::endl;
-      ImportEigenVector(evec[_ev0+e],_eval[_ev0+e],e);
-    }
-  }
-  void DeflateSources(std::vector<Field> &source,std::vector<Field> & guess)
-  {
-    int nrhs = source.size();
-    GRID_ASSERT(source.size()==guess.size());
-    GRID_ASSERT(grid == guess[0].Grid());
-    conformable(guess[0],source[0]);
-
-    int64_t vw = vol * words;
-
-    RealD t0 = usecond();
-    BLAS_R.resize(nrhs * vw); // cost free if size doesn't change
-    BLAS_G.resize(nrhs * vw); // cost free if size doesn't change
-    BLAS_C.resize(nev * nrhs);// cost free if size doesn't change
-
-    /////////////////////////////////////////////
-    // Copy in the multi-rhs sources
-    /////////////////////////////////////////////
-    //    for(int r=0;r<nrhs;r++){
-    //      std::cout << " source["<<r<<"] = "<<norm2(source[r])<<std::endl;
-    //    }
-    for(int r=0;r<nrhs;r++){
-      int64_t offset = r*vw;
-      autoView(v,source[r],AcceleratorRead);
-      acceleratorCopyDeviceToDevice(&v[0],&BLAS_R[offset],sizeof(scalar_object)*vol);
-    }
-
-  /*
-   * in Fortran column major notation (cuBlas order)
-   *
-   * Exe = [e1(x)][..][en(x)]
-   *
-   * Rxr = [r1(x)][..][rm(x)]
-   *
-   * C_er = E^dag R
-   * C_er = C_er / lambda_e 
-   * G_xr = Exe Cer
-   */
-    deviceVector<scalar *> Ed(1);
-    deviceVector<scalar *> Rd(1);
-    deviceVector<scalar *> Cd(1);
-    deviceVector<scalar *> Gd(1);
-
-    scalar * Eh = & BLAS_E[0];
-    scalar * Rh = & BLAS_R[0];
-    scalar * Ch = & BLAS_C[0];
-    scalar * Gh = & BLAS_G[0];
-
-    acceleratorPut(Ed[0],Eh);
-    acceleratorPut(Rd[0],Rh);
-    acceleratorPut(Cd[0],Ch);
-    acceleratorPut(Gd[0],Gh);
-
-    GridBLAS BLAS;
-
-    /////////////////////////////////////////
-    // C_er = E^dag R
-    /////////////////////////////////////////
-    BLAS.gemmBatched(GridBLAS_OP_C,GridBLAS_OP_N, 
-    		     nev,nrhs,vw,
-		     scalar(1.0),
-		     Ed,
-		     Rd,
-		     scalar(0.0),  // wipe out C
-		     Cd);
-    BLAS.synchronise();
-
-    GRID_ASSERT(BLAS_C.size()==nev*nrhs);
-
-    std::vector<scalar> HOST_C(BLAS_C.size());      // nrhs . nev -- the coefficients 
-    acceleratorCopyFromDevice(&BLAS_C[0],&HOST_C[0],BLAS_C.size()*sizeof(scalar));
-    grid->GlobalSumVector(&HOST_C[0],nev*nrhs);
-    for(int e=0;e<nev;e++){
-      RealD lam(1.0/eval[e]);
-      for(int r=0;r<nrhs;r++){
-	int off = e+nev*r;
-	HOST_C[off]=HOST_C[off] * lam;
-	//	std::cout << "C["<<e<<"]["<<r<<"] ="<<HOST_C[off]<< " eval[e] "<<eval[e] <<std::endl;
-      }
-    }
-    acceleratorCopyToDevice(&HOST_C[0],&BLAS_C[0],BLAS_C.size()*sizeof(scalar));
-
-    
-    /////////////////////////////////////////
-    // Guess G_xr = Exe Cer
-    /////////////////////////////////////////
-    BLAS.gemmBatched(GridBLAS_OP_N,GridBLAS_OP_N, 
-		     vw,nrhs,nev,
-		     scalar(1.0),
-		     Ed, // x . nev
-		     Cd, // nev . nrhs
-		     scalar(0.0),
-		     Gd);
-    BLAS.synchronise();
-
-    ///////////////////////////////////////
-    // Copy out the multirhs
-    ///////////////////////////////////////
-    for(int r=0;r<nrhs;r++){
-      int64_t offset = r*vw;
-      autoView(v,guess[r],AcceleratorWrite);
-      acceleratorCopyDeviceToDevice(&BLAS_G[offset],&v[0],sizeof(scalar_object)*vol);
-    }
-    RealD t1 = usecond();
-    std::cout << GridLogMessage << "MultiRHSDeflation for "<<nrhs<<" sources with "<<nev<<" eigenvectors took " << (t1-t0)/1e3 <<" ms"<<std::endl;
-  }
-};
-
-NAMESPACE_END(Grid);

Grid/algorithms/iterative/AdefGeneric.h

@@ -33,111 +33,109 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
    * Script A = SolverMatrix 
    * Script P = Preconditioner
    *
+   * Deflation methods considered
+   *      -- Solve P A x = P b        [ like Luscher ]
+   * DEF-1        M P A x = M P b     [i.e. left precon]
+   * DEF-2        P^T M A x = P^T M b
+   * ADEF-1       Preconditioner = M P + Q      [ Q + M + M A Q]
+   * ADEF-2       Preconditioner = P^T M + Q
+   * BNN          Preconditioner = P^T M P + Q
+   * BNN2         Preconditioner = M P + P^TM +Q - M P A M 
+   * 
    * Implement ADEF-2
    *
    * Vstart = P^Tx + Qb
    * M1 = P^TM + Q
    * M2=M3=1
+   * Vout = x
    */
-NAMESPACE_BEGIN(Grid);
 
-
+// abstract base
-template<class Field>
+template<class Field, class CoarseField>
-class TwoLevelCG : public LinearFunction<Field>
+class TwoLevelFlexiblePcg : public LinearFunction<Field>
 {
  public:
+  int verbose;
   RealD   Tolerance;
   Integer MaxIterations;
+  const int mmax = 5;
   GridBase *grid;
+  GridBase *coarsegrid;
 
-  // Fine operator, Smoother, CoarseSolver
+  LinearOperatorBase<Field>   *_Linop
-  LinearOperatorBase<Field>   &_FineLinop;
+  OperatorFunction<Field>     *_Smoother,
-  LinearFunction<Field>   &_Smoother;
+  LinearFunction<CoarseField> *_CoarseSolver;
+
+  // Need somthing that knows how to get from Coarse to fine and back again
   
   // more most opertor functions
-  TwoLevelCG(RealD tol,
+  TwoLevelFlexiblePcg(RealD tol,
-	     Integer maxit,
+		     Integer maxit,
-	     LinearOperatorBase<Field>   &FineLinop,
+		     LinearOperatorBase<Field> *Linop,
-	     LinearFunction<Field>       &Smoother,
+		     LinearOperatorBase<Field> *SmootherLinop,
-	     GridBase *fine) : 
+		     OperatorFunction<Field>   *Smoother,
+		     OperatorFunction<CoarseField>  CoarseLinop
+		     ) : 
       Tolerance(tol), 
       MaxIterations(maxit),
-      _FineLinop(FineLinop),
+      _Linop(Linop),
-      _Smoother(Smoother)
+      _PreconditionerLinop(PrecLinop),
+      _Preconditioner(Preconditioner)
   { 
-    grid       = fine;
+    verbose=0;
   };
 
-  virtual void operator() (const Field &src, Field &x)
+  // The Pcg routine is common to all, but the various matrices differ from derived 
-  {
+  // implementation to derived implmentation
-    std::cout << GridLogMessage<<"HDCG: fPcg starting single RHS"<<std::endl;
+  void operator() (const Field &src, Field &psi){
+  void operator() (const Field &src, Field &psi){
+
+    psi.Checkerboard() = src.Checkerboard();
+    grid             = src.Grid();
+
     RealD f;
     RealD rtzp,rtz,a,d,b;
     RealD rptzp;
+    RealD tn;
+    RealD guess = norm2(psi);
+    RealD ssq   = norm2(src);
+    RealD rsq   = ssq*Tolerance*Tolerance;
     
     /////////////////////////////
     // Set up history vectors
     /////////////////////////////
-    int mmax = 5;
+    std::vector<Field> p  (mmax,grid);
-    std::cout << GridLogMessage<<"HDCG: fPcg allocating"<<std::endl;
-    std::vector<Field> p(mmax,grid);
     std::vector<Field> mmp(mmax,grid);
     std::vector<RealD> pAp(mmax);
-    Field z(grid);
+
+    Field x  (grid); x = psi;
+    Field z  (grid);
     Field tmp(grid);
-    Field  mp (grid);
+    Field r  (grid);
-    Field  r  (grid);
+    Field mu (grid);
-    Field  mu (grid);
   
-    std::cout << GridLogMessage<<"HDCG: fPcg allocated"<<std::endl;
-    //Initial residual computation & set up
-    RealD guess   = norm2(x);
-    std::cout << GridLogMessage<<"HDCG: fPcg guess nrm "<<guess<<std::endl;
-    RealD src_nrm = norm2(src);
-    std::cout << GridLogMessage<<"HDCG: fPcg src nrm "<<src_nrm<<std::endl;
-    
-    if ( src_nrm == 0.0 ) {
-      std::cout << GridLogMessage<<"HDCG: fPcg given trivial source norm "<<src_nrm<<std::endl;
-      x=Zero();
-    }
-    RealD tn;
-    
-    GridStopWatch HDCGTimer;
-    HDCGTimer.Start();
     //////////////////////////
     // x0 = Vstart -- possibly modify guess
     //////////////////////////
+    x=src;
     Vstart(x,src);
 
     // r0 = b -A x0
-    _FineLinop.HermOp(x,mmp[0]);
+    HermOp(x,mmp); // Shouldn't this be something else?
     axpy (r, -1.0,mmp[0], src);    // Recomputes r=src-Ax0
-    {
-      double n1 = norm2(x);
-      double n2 = norm2(mmp[0]);
-      double n3 = norm2(r);
-      std::cout<<GridLogMessage<<"x,vstart,r = "<<n1<<" "<<n2<<" "<<n3<<std::endl;
-    }
 
     //////////////////////////////////
     // Compute z = M1 x
     //////////////////////////////////
-    PcgM1(r,z);
+    M1(r,z,tmp,mp,SmootherMirs);
     rtzp =real(innerProduct(r,z));
 
     ///////////////////////////////////////
     // Solve for Mss mu = P A z and set p = z-mu
-    // Def2 p = 1 - Q Az = Pright z
+    // Def2: p = 1 - Q Az = Pright z 
     // Other algos M2 is trivial
     ///////////////////////////////////////
-    PcgM2(z,p[0]);
+    M2(z,p[0]);
-
-    RealD ssq =  norm2(src);
-    RealD rsq =  ssq*Tolerance*Tolerance;
-
-    std::cout << GridLogMessage<<"HDCG: k=0 residual "<<rtzp<<" rsq "<<rsq<<"\n";
-
-    Field pp(grid);
 
     for (int k=0;k<=MaxIterations;k++){
     
@@ -145,7 +143,7 @@ class TwoLevelCG : public LinearFunction<Field>
       int peri_kp = (k+1) % mmax;
 
       rtz=rtzp;
-      d= PcgM3(p[peri_k],mmp[peri_k]);
+      d= M3(p[peri_k],mp,mmp[peri_k],tmp);
       a = rtz/d;
     
       // Memorise this
@@ -155,36 +153,21 @@ class TwoLevelCG : public LinearFunction<Field>
       RealD rn = axpy_norm(r,-a,mmp[peri_k],r);
 
       // Compute z = M x
-      PcgM1(r,z);
+      M1(r,z,tmp,mp);
 
-      {
-	RealD n1,n2;
-	n1=norm2(r);
-	n2=norm2(z);
-	std::cout << GridLogMessage<<"HDCG::fPcg iteration "<<k<<" : vector r,z "<<n1<<" "<<n2<<"\n";
-      }
       rtzp =real(innerProduct(r,z));
-      std::cout << GridLogMessage<<"HDCG::fPcg iteration "<<k<<" : inner rtzp "<<rtzp<<"\n";
 
-      //    PcgM2(z,p[0]);
+      M2(z,mu); // ADEF-2 this is identity. Axpy possible to eliminate
-      PcgM2(z,mu); // ADEF-2 this is identity. Axpy possible to eliminate
 
-      p[peri_kp]=mu;
+      p[peri_kp]=p[peri_k];
 
-      // Standard search direction  p -> z + b p    
+      // Standard search direction  p -> z + b p    ; b = 
       b = (rtzp)/rtz;
 
       int northog;
-      // k=zero  <=> peri_kp=1;        northog = 1
-      // k=1     <=> peri_kp=2;        northog = 2
-      // ...               ...                  ...
-      // k=mmax-2<=> peri_kp=mmax-1;   northog = mmax-1
-      // k=mmax-1<=> peri_kp=0;        northog = 1
-
       //    northog     = (peri_kp==0)?1:peri_kp; // This is the fCG(mmax) algorithm
       northog     = (k>mmax-1)?(mmax-1):k;        // This is the fCG-Tr(mmax-1) algorithm
     
-      std::cout<<GridLogMessage<<"HDCG::fPcg iteration "<<k<<" : orthogonalising to last "<<northog<<" vectors\n";
       for(int back=0; back < northog; back++){
 	int peri_back = (k-back)%mmax;
 	RealD pbApk= real(innerProduct(mmp[peri_back],p[peri_kp]));
@@ -193,324 +176,75 @@ class TwoLevelCG : public LinearFunction<Field>
       }
 
       RealD rrn=sqrt(rn/ssq);
-      RealD rtn=sqrt(rtz/ssq);
+      std::cout<<GridLogMessage<<"TwoLevelfPcg: k= "<<k<<" residual = "<<rrn<<std::endl;
-      RealD rtnp=sqrt(rtzp/ssq);
-
-      std::cout<<GridLogMessage<<"HDCG: fPcg k= "<<k<<" residual = "<<rrn<<"\n";
 
       // Stopping condition
       if ( rn <= rsq ) { 
 
-	HDCGTimer.Stop();
+	HermOp(x,mmp); // Shouldn't this be something else?
-	std::cout<<GridLogMessage<<"HDCG: fPcg converged in "<<k<<" iterations and "<<HDCGTimer.Elapsed()<<std::endl;;
-	
-	_FineLinop.HermOp(x,mmp[0]);			  
 	axpy(tmp,-1.0,src,mmp[0]);
 	
-	RealD  mmpnorm = sqrt(norm2(mmp[0]));
+	RealD psinorm = sqrt(norm2(x));
-	RealD  xnorm   = sqrt(norm2(x));
+	RealD srcnorm = sqrt(norm2(src));
-	RealD  srcnorm = sqrt(norm2(src));
+	RealD tmpnorm = sqrt(norm2(tmp));
-	RealD  tmpnorm = sqrt(norm2(tmp));
+	RealD true_residual = tmpnorm/srcnorm;
-	RealD  true_residual = tmpnorm/srcnorm;
+	std::cout<<GridLogMessage<<"TwoLevelfPcg:   true residual is "<<true_residual<<std::endl;
-	std::cout<<GridLogMessage
+	std::cout<<GridLogMessage<<"TwoLevelfPcg: target residual was"<<Tolerance<<std::endl;
-	       <<"HDCG: true residual is "<<true_residual
+	return k;
-	       <<" solution "<<xnorm
-	       <<" source "<<srcnorm
-	       <<" mmp "<<mmpnorm	  
-	       <<std::endl;
-      
-	return;
       }
-
     }
-    HDCGTimer.Stop();
+    // Non-convergence
-    std::cout<<GridLogMessage<<"HDCG: not converged "<<HDCGTimer.Elapsed()<<std::endl;
+    assert(0);
-    RealD  xnorm   = sqrt(norm2(x));
-    RealD  srcnorm = sqrt(norm2(src));
-    std::cout<<GridLogMessage<<"HDCG: non-converged solution "<<xnorm<<" source "<<srcnorm<<std::endl;
   }
 
-
-
-  virtual void operator() (std::vector<Field> &src, std::vector<Field> &x)
-  {
-    std::cout << GridLogMessage<<"HDCG: mrhs fPcg starting"<<std::endl;
-    src[0].Grid()->Barrier();
-    int nrhs = src.size();
-    std::vector<RealD> f(nrhs);
-    std::vector<RealD> rtzp(nrhs);
-    std::vector<RealD> rtz(nrhs);
-    std::vector<RealD> a(nrhs);
-    std::vector<RealD> d(nrhs);
-    std::vector<RealD> b(nrhs);
-    std::vector<RealD> rptzp(nrhs);
-    /////////////////////////////
-    // Set up history vectors
-    /////////////////////////////
-    int mmax = 3;
-    std::cout << GridLogMessage<<"HDCG: fPcg allocating"<<std::endl;
-    src[0].Grid()->Barrier();
-    std::vector<std::vector<Field> > p(nrhs);   for(int r=0;r<nrhs;r++)  p[r].resize(mmax,grid);
-    std::cout << GridLogMessage<<"HDCG: fPcg allocated p"<<std::endl;
-    src[0].Grid()->Barrier();
-    std::vector<std::vector<Field> > mmp(nrhs); for(int r=0;r<nrhs;r++) mmp[r].resize(mmax,grid);
-    std::cout << GridLogMessage<<"HDCG: fPcg allocated mmp"<<std::endl;
-    src[0].Grid()->Barrier();
-    std::vector<std::vector<RealD> > pAp(nrhs); for(int r=0;r<nrhs;r++) pAp[r].resize(mmax);
-    std::cout << GridLogMessage<<"HDCG: fPcg allocated pAp"<<std::endl;
-    src[0].Grid()->Barrier();
-    std::vector<Field> z(nrhs,grid);
-    std::vector<Field>  mp (nrhs,grid);
-    std::vector<Field>  r  (nrhs,grid);
-    std::vector<Field>  mu (nrhs,grid);
-    std::cout << GridLogMessage<<"HDCG: fPcg allocated z,mp,r,mu"<<std::endl;
-    src[0].Grid()->Barrier();
-
-    //Initial residual computation & set up
-    std::vector<RealD> src_nrm(nrhs);
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      src_nrm[rhs]=norm2(src[rhs]);
-      GRID_ASSERT(src_nrm[rhs]!=0.0);
-    }
-    std::vector<RealD> tn(nrhs);
-
-    GridStopWatch HDCGTimer;
-    HDCGTimer.Start();
-    //////////////////////////
-    // x0 = Vstart -- possibly modify guess
-    //////////////////////////
-    Vstart(x,src);
-
-    for(int rhs=0;rhs<nrhs;rhs++){
-      // r0 = b -A x0
-      _FineLinop.HermOp(x[rhs],mmp[rhs][0]);
-      axpy (r[rhs], -1.0,mmp[rhs][0], src[rhs]);    // Recomputes r=src-Ax0
-    }
-
-    //////////////////////////////////
-    // Compute z = M1 x
-    //////////////////////////////////
-    // This needs a multiRHS version for acceleration
-    PcgM1(r,z);
-
-    std::vector<RealD> ssq(nrhs);
-    std::vector<RealD> rsq(nrhs);
-    std::vector<Field> pp(nrhs,grid);
-
-    for(int rhs=0;rhs<nrhs;rhs++){
-      rtzp[rhs] =real(innerProduct(r[rhs],z[rhs]));
-      p[rhs][0]=z[rhs];
-      ssq[rhs]=norm2(src[rhs]);
-      rsq[rhs]=  ssq[rhs]*Tolerance*Tolerance;
-      std::cout << GridLogMessage<<"mrhs HDCG: "<<rhs<<" k=0 residual "<<rtzp[rhs]<<" rsq "<<rsq[rhs]<<"\n";
-    }
-
-    std::vector<RealD> rn(nrhs);
-    for (int k=0;k<=MaxIterations;k++){
-    
-      int peri_k  = k % mmax;
-      int peri_kp = (k+1) % mmax;
-
-      for(int rhs=0;rhs<nrhs;rhs++){
-	rtz[rhs]=rtzp[rhs];
-	d[rhs]= PcgM3(p[rhs][peri_k],mmp[rhs][peri_k]);
-	a[rhs] = rtz[rhs]/d[rhs];
-    
-	// Memorise this
-	pAp[rhs][peri_k] = d[rhs];
-
-	axpy(x[rhs],a[rhs],p[rhs][peri_k],x[rhs]);
-	rn[rhs] = axpy_norm(r[rhs],-a[rhs],mmp[rhs][peri_k],r[rhs]);
-      }
-
-      // Compute z = M x (for *all* RHS)
-      PcgM1(r,z);
-      std::cout << GridLogMessage<<"HDCG::fPcg M1 complete"<<std::endl;
-      grid->Barrier();
-      
-      RealD max_rn=0.0;
-      for(int rhs=0;rhs<nrhs;rhs++){
-
-	rtzp[rhs] =real(innerProduct(r[rhs],z[rhs]));
-
-	std::cout << GridLogMessage<<"HDCG::fPcg rhs"<<rhs<<" iteration "<<k<<" : inner rtzp "<<rtzp[rhs]<<"\n";
-	
-	mu[rhs]=z[rhs];
-
-	p[rhs][peri_kp]=mu[rhs];
-
-	// Standard search direction p == z + b p 
-	b[rhs] = (rtzp[rhs])/rtz[rhs];
-
-	int northog = (k>mmax-1)?(mmax-1):k;        // This is the fCG-Tr(mmax-1) algorithm
-	std::cout<<GridLogMessage<<"HDCG::fPcg iteration "<<k<<" : orthogonalising to last "<<northog<<" vectors\n";
-	for(int back=0; back < northog; back++){
-	  int peri_back = (k-back)%mmax;
-	  RealD pbApk= real(innerProduct(mmp[rhs][peri_back],p[rhs][peri_kp]));
-	  RealD beta = -pbApk/pAp[rhs][peri_back];
-	  axpy(p[rhs][peri_kp],beta,p[rhs][peri_back],p[rhs][peri_kp]);
-	}
-
-	RealD rrn=sqrt(rn[rhs]/ssq[rhs]);
-	RealD rtn=sqrt(rtz[rhs]/ssq[rhs]);
-	RealD rtnp=sqrt(rtzp[rhs]/ssq[rhs]);
-	
-	std::cout<<GridLogMessage<<"HDCG: rhs "<<rhs<<"fPcg k= "<<k<<" residual = "<<rrn<<"\n";
-	if ( rrn > max_rn ) max_rn = rrn;
-      }
-
-      // Stopping condition based on worst case
-      if ( max_rn <= Tolerance ) { 
-
-	HDCGTimer.Stop();
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg converged in "<<k<<" iterations and "<<HDCGTimer.Elapsed()<<std::endl;;
-
-	for(int rhs=0;rhs<nrhs;rhs++){
-	  _FineLinop.HermOp(x[rhs],mmp[rhs][0]);			  
-	  Field tmp(grid);
-	  axpy(tmp,-1.0,src[rhs],mmp[rhs][0]);
-      
-	  RealD  mmpnorm = sqrt(norm2(mmp[rhs][0]));
-	  RealD  xnorm   = sqrt(norm2(x[rhs]));
-	  RealD  srcnorm = sqrt(norm2(src[rhs]));
-	  RealD  tmpnorm = sqrt(norm2(tmp));
-	  RealD  true_residual = tmpnorm/srcnorm;
-	  std::cout<<GridLogMessage
-		   <<"HDCG: true residual ["<<rhs<<"] is "<<true_residual
-		   <<" solution "<<xnorm
-		   <<" source "<<srcnorm
-		   <<" mmp "<<mmpnorm	  
-		   <<std::endl;
-	}
-	return;
-      }
-      
-    }
-    HDCGTimer.Stop();
-    std::cout<<GridLogMessage<<"HDCG: not converged "<<HDCGTimer.Elapsed()<<std::endl;
-    for(int rhs=0;rhs<nrhs;rhs++){
-      RealD  xnorm   = sqrt(norm2(x[rhs]));
-      RealD  srcnorm = sqrt(norm2(src[rhs]));
-      std::cout<<GridLogMessage<<"HDCG: non-converged solution "<<xnorm<<" source "<<srcnorm<<std::endl;
-    }
-  }
-  
-
  public:
 
-  virtual void PcgM1(std::vector<Field> & in,std::vector<Field> & out)
+  virtual void M(Field & in,Field & out,Field & tmp) {
-  {
-    std::cout << "PcgM1 default (cheat) mrhs version"<<std::endl;
-    for(int rhs=0;rhs<in.size();rhs++){
-      this->PcgM1(in[rhs],out[rhs]);
-    }
-  }
-  virtual void PcgM1(Field & in, Field & out)     =0;
-  virtual void Vstart(std::vector<Field> & x,std::vector<Field> & src)
-  {
-    std::cout << "Vstart default (cheat) mrhs version"<<std::endl;
-    for(int rhs=0;rhs<x.size();rhs++){
-      this->Vstart(x[rhs],src[rhs]);
-    }
-  }
-  virtual void Vstart(Field & x,const Field & src)=0;
 
-  virtual void PcgM2(const Field & in, Field & out) {
-    out=in;
   }
 
-  virtual RealD PcgM3(const Field & p, Field & mmp){
+  virtual void M1(Field & in, Field & out) {// the smoother
-    RealD dd;
-    _FineLinop.HermOp(p,mmp);
-    ComplexD dot = innerProduct(p,mmp);
-    dd=real(dot);
-    return dd;
-  }
 
-  /////////////////////////////////////////////////////////////////////
-  // Only Def1 has non-trivial Vout.
-  /////////////////////////////////////////////////////////////////////
-
-};
-  
-template<class Field, class CoarseField, class Aggregation>
-class TwoLevelADEF2 : public TwoLevelCG<Field>
-{
- public:
-  ///////////////////////////////////////////////////////////////////////////////////
-  // Need something that knows how to get from Coarse to fine and back again
-  //  void ProjectToSubspace(CoarseVector &CoarseVec,const FineField &FineVec){
-  //  void PromoteFromSubspace(const CoarseVector &CoarseVec,FineField &FineVec){
-  ///////////////////////////////////////////////////////////////////////////////////
-  GridBase *coarsegrid;
-  Aggregation &_Aggregates;                    
-  LinearFunction<CoarseField> &_CoarseSolver;
-  LinearFunction<CoarseField> &_CoarseSolverPrecise;
-  ///////////////////////////////////////////////////////////////////////////////////
-  
-  // more most opertor functions
-  TwoLevelADEF2(RealD tol,
-		Integer maxit,
-		LinearOperatorBase<Field>    &FineLinop,
-		LinearFunction<Field>        &Smoother,
-		LinearFunction<CoarseField>  &CoarseSolver,
-		LinearFunction<CoarseField>  &CoarseSolverPrecise,
-		Aggregation &Aggregates
-		) :
-      TwoLevelCG<Field>(tol,maxit,FineLinop,Smoother,Aggregates.FineGrid),
-      _CoarseSolver(CoarseSolver),
-      _CoarseSolverPrecise(CoarseSolverPrecise),
-      _Aggregates(Aggregates)
-  {
-    coarsegrid = Aggregates.CoarseGrid;
-  };
-
-  virtual void PcgM1(Field & in, Field & out)
-  {
-    GRID_TRACE("MultiGridPreconditioner ");
     // [PTM+Q] in = [1 - Q A] M in + Q in = Min + Q [ in -A Min]
+    Field tmp(grid);
+    Field Min(grid);
 
-    Field tmp(this->grid);
+    PcgM(in,Min); // Smoother call
-    Field Min(this->grid);
-    CoarseField PleftProj(this->coarsegrid);
-    CoarseField PleftMss_proj(this->coarsegrid);
 
-    GridStopWatch SmootherTimer;
+    HermOp(Min,out);
-    GridStopWatch MatrixTimer;
-    SmootherTimer.Start();
-    this->_Smoother(in,Min);
-    SmootherTimer.Stop();
-
-    MatrixTimer.Start();
-    this->_FineLinop.HermOp(Min,out);
-    MatrixTimer.Stop();
     axpy(tmp,-1.0,out,in);          // tmp  = in - A Min
 
-    GridStopWatch ProjTimer;
+    ProjectToSubspace(tmp,PleftProj);     
-    GridStopWatch CoarseTimer;
+    ApplyInverse(PleftProj,PleftMss_proj); // Ass^{-1} [in - A Min]_s
-    GridStopWatch PromTimer;
+    PromoteFromSubspace(PleftMss_proj,tmp);// tmp = Q[in - A Min]  
-    ProjTimer.Start();
-    this->_Aggregates.ProjectToSubspace(PleftProj,tmp);     
-    ProjTimer.Stop();
-    CoarseTimer.Start();
-    this->_CoarseSolver(PleftProj,PleftMss_proj); // Ass^{-1} [in - A Min]_s
-    CoarseTimer.Stop();
-    PromTimer.Start();
-    this->_Aggregates.PromoteFromSubspace(PleftMss_proj,tmp);// tmp = Q[in - A Min]  
-    PromTimer.Stop();
-    std::cout << GridLogPerformance << "PcgM1 breakdown "<<std::endl;
-    std::cout << GridLogPerformance << "\tSmoother   " << SmootherTimer.Elapsed() <<std::endl;
-    std::cout << GridLogPerformance << "\tMatrix     " << MatrixTimer.Elapsed() <<std::endl;
-    std::cout << GridLogPerformance << "\tProj       " << ProjTimer.Elapsed() <<std::endl;
-    std::cout << GridLogPerformance << "\tCoarse     " << CoarseTimer.Elapsed() <<std::endl;
-    std::cout << GridLogPerformance << "\tProm       " << PromTimer.Elapsed() <<std::endl;
-
     axpy(out,1.0,Min,tmp); // Min+tmp
   }
 
-  virtual void Vstart(Field & x,const Field & src)
+  virtual void M2(const Field & in, Field & out) {
-  {
+    out=in;
-    std::cout << GridLogMessage<<"HDCG: fPcg Vstart "<<std::endl;
+    // Must override for Def2 only
+    //  case PcgDef2:
+    //    Pright(in,out);
+    //    break;
+  }
+
+  virtual RealD M3(const Field & p, Field & mmp){
+    double d,dd;
+    HermOpAndNorm(p,mmp,d,dd);
+    return dd;
+    // Must override for Def1 only
+    //  case PcgDef1:
+    //    d=linop_d->Mprec(p,mmp,tmp,0,1);// Dag no
+    //      linop_d->Mprec(mmp,mp,tmp,1);// Dag yes
+    //    Pleft(mp,mmp);
+    //    d=real(linop_d->inner(p,mmp));
+  }
+
+  virtual void VstartDef2(Field & xconst Field & src){
+    //case PcgDef2:
+    //case PcgAdef2: 
+    //case PcgAdef2f:
+    //case PcgV11f:
     ///////////////////////////////////
     // Choose x_0 such that 
     // x_0 = guess +  (A_ss^inv) r_s = guess + Ass_inv [src -Aguess]
@@ -522,78 +256,142 @@ class TwoLevelADEF2 : public TwoLevelCG<Field>
     //                   = src_s - (A guess)_s - src_s  + (A guess)_s 
     //                   = 0 
     ///////////////////////////////////
-    Field r(this->grid);
+    Field r(grid);
-    Field mmp(this->grid);
+    Field mmp(grid);
-    CoarseField PleftProj(this->coarsegrid);
-    CoarseField PleftMss_proj(this->coarsegrid);
     
-    std::cout << GridLogMessage<<"HDCG: fPcg Vstart projecting "<<std::endl;
+    HermOp(x,mmp);
-    this->_Aggregates.ProjectToSubspace(PleftProj,src);     
+    axpy (r, -1.0, mmp, src);        // r_{-1} = src - A x
-    std::cout << GridLogMessage<<"HDCG: fPcg Vstart coarse solve "<<std::endl;
+    ProjectToSubspace(r,PleftProj);     
-    this->_CoarseSolverPrecise(PleftProj,PleftMss_proj); // Ass^{-1} r_s
+    ApplyInverseCG(PleftProj,PleftMss_proj); // Ass^{-1} r_s
-    std::cout << GridLogMessage<<"HDCG: fPcg Vstart promote "<<std::endl;
+    PromoteFromSubspace(PleftMss_proj,mmp);  
-    this->_Aggregates.PromoteFromSubspace(PleftMss_proj,x);  
+    x=x+mmp;
 
   }
 
-};
+  virtual void Vstart(Field & x,const Field & src){
+    return;
+  }
 
+  /////////////////////////////////////////////////////////////////////
+  // Only Def1 has non-trivial Vout. Override in Def1
+  /////////////////////////////////////////////////////////////////////
+  virtual void   Vout  (Field & in, Field & out,Field & src){
+    out = in;
+    //case PcgDef1:
+    //    //Qb + PT x
+    //    ProjectToSubspace(src,PleftProj);     
+    //    ApplyInverse(PleftProj,PleftMss_proj); // Ass^{-1} r_s
+    //    PromoteFromSubspace(PleftMss_proj,tmp);  
+    //    
+    //    Pright(in,out);
+    //    
+    //    linop_d->axpy(out,tmp,out,1.0);
+    //    break;
+  }
+
+  ////////////////////////////////////////////////////////////////////////////////////////////////
+  // Pright and Pleft are common to all implementations
+  ////////////////////////////////////////////////////////////////////////////////////////////////
+  virtual void Pright(Field & in,Field & out){
+    // P_R  = [ 1              0 ] 
+    //        [ -Mss^-1 Msb    0 ] 
+    Field in_sbar(grid);
+
+    ProjectToSubspace(in,PleftProj);     
+    PromoteFromSubspace(PleftProj,out);  
+    axpy(in_sbar,-1.0,out,in);       // in_sbar = in - in_s 
+
+    HermOp(in_sbar,out);
+    ProjectToSubspace(out,PleftProj);           // Mssbar in_sbar  (project)
+
+    ApplyInverse     (PleftProj,PleftMss_proj); // Mss^{-1} Mssbar 
+    PromoteFromSubspace(PleftMss_proj,out);     // 
+
+    axpy(out,-1.0,out,in_sbar);     // in_sbar - Mss^{-1} Mssbar in_sbar
+  }
+  virtual void Pleft (Field & in,Field & out){
+    // P_L  = [ 1  -Mbs Mss^-1] 
+    //        [ 0   0         ] 
+    Field in_sbar(grid);
+    Field    tmp2(grid);
+    Field    Mtmp(grid);
+
+    ProjectToSubspace(in,PleftProj);     
+    PromoteFromSubspace(PleftProj,out);  
+    axpy(in_sbar,-1.0,out,in);      // in_sbar = in - in_s
+
+    ApplyInverse(PleftProj,PleftMss_proj); // Mss^{-1} in_s
+    PromoteFromSubspace(PleftMss_proj,out);
+
+    HermOp(out,Mtmp);
+
+    ProjectToSubspace(Mtmp,PleftProj);      // Msbar s Mss^{-1}
+    PromoteFromSubspace(PleftProj,tmp2);
+
+    axpy(out,-1.0,tmp2,Mtmp);
+    axpy(out,-1.0,out,in_sbar);     // in_sbar - Msbars Mss^{-1} in_s
+  }
+}
 
 template<class Field>
-class TwoLevelADEF1defl : public TwoLevelCG<Field>
+class TwoLevelFlexiblePcgADef2 : public TwoLevelFlexiblePcg<Field> {
-{
+ public:
-public:
+  virtual void M(Field & in,Field & out,Field & tmp){
-  const std::vector<Field> &evec;
-  const std::vector<RealD> &eval;
 
-  TwoLevelADEF1defl(RealD tol,
-		   Integer maxit,
-		   LinearOperatorBase<Field>   &FineLinop,
-		   LinearFunction<Field>   &Smoother,
-		   std::vector<Field> &_evec,
-		   std::vector<RealD> &_eval) : 
-    TwoLevelCG<Field>(tol,maxit,FineLinop,Smoother,_evec[0].Grid()),
-    evec(_evec),
-    eval(_eval)
-  {};
-
-  // Can just inherit existing M2
-  // Can just inherit existing M3
-
-  // Simple vstart - do nothing
-  virtual void Vstart(Field & x,const Field & src){
-    x=src; // Could apply Q
-  };
-
-  // Override PcgM1
-  virtual void PcgM1(Field & in, Field & out)
-  {
-    GRID_TRACE("EvecPreconditioner ");
-    int N=evec.size();
-    Field Pin(this->grid);
-    Field Qin(this->grid);
-
-    //MP  + Q = M(1-AQ) + Q = M
-    // // If we are eigenvector deflating in coarse space
-    // // Q   = Sum_i |phi_i> 1/lambda_i <phi_i|
-    // // A Q = Sum_i |phi_i> <phi_i|
-    // // M(1-AQ) = M(1-proj) + Q
-    Qin.Checkerboard()=in.Checkerboard();
-    Qin = Zero();
-    Pin = in;
-    for (int i=0;i<N;i++) {
-      const Field& tmp = evec[i];
-      auto ip = TensorRemove(innerProduct(tmp,in));
-      axpy(Qin, ip / eval[i],tmp,Qin);
-      axpy(Pin, -ip ,tmp,Pin);
-    }
-
-    this->_Smoother(Pin,out);
-
-    out = out + Qin;
   } 
-};
+  virtual void M1(Field & in, Field & out,Field & tmp,Field & mp){
 
-NAMESPACE_END(Grid);
+  }
+  virtual void M2(Field & in, Field & out){
 
+  }
+  virtual RealD M3(Field & p, Field & mp,Field & mmp, Field & tmp){
+
+  }
+  virtual void Vstart(Field & in, Field & src, Field & r, Field & mp, Field & mmp, Field & tmp){
+
+  }
+}
+/*
+template<class Field>
+class TwoLevelFlexiblePcgAD : public TwoLevelFlexiblePcg<Field> {
+ public:
+  virtual void M(Field & in,Field & out,Field & tmp); 
+  virtual void M1(Field & in, Field & out,Field & tmp,Field & mp);
+  virtual void M2(Field & in, Field & out);
+  virtual RealD M3(Field & p, Field & mp,Field & mmp, Field & tmp);
+  virtual void Vstart(Field & in, Field & src, Field & r, Field & mp, Field & mmp, Field & tmp);
+}
+
+template<class Field>
+class TwoLevelFlexiblePcgDef1 : public TwoLevelFlexiblePcg<Field> {
+ public:
+  virtual void M(Field & in,Field & out,Field & tmp); 
+  virtual void M1(Field & in, Field & out,Field & tmp,Field & mp);
+  virtual void M2(Field & in, Field & out);
+  virtual RealD M3(Field & p, Field & mp,Field & mmp, Field & tmp);
+  virtual void Vstart(Field & in, Field & src, Field & r, Field & mp, Field & mmp, Field & tmp);
+  virtual void   Vout  (Field & in, Field & out,Field & src,Field & tmp);
+}
+
+template<class Field>
+class TwoLevelFlexiblePcgDef2 : public TwoLevelFlexiblePcg<Field> {
+ public:
+  virtual void M(Field & in,Field & out,Field & tmp); 
+  virtual void M1(Field & in, Field & out,Field & tmp,Field & mp);
+  virtual void M2(Field & in, Field & out);
+  virtual RealD M3(Field & p, Field & mp,Field & mmp, Field & tmp);
+  virtual void Vstart(Field & in, Field & src, Field & r, Field & mp, Field & mmp, Field & tmp);
+}
+
+template<class Field>
+class TwoLevelFlexiblePcgV11: public TwoLevelFlexiblePcg<Field> {
+ public:
+  virtual void M(Field & in,Field & out,Field & tmp); 
+  virtual void M1(Field & in, Field & out,Field & tmp,Field & mp);
+  virtual void M2(Field & in, Field & out);
+  virtual RealD M3(Field & p, Field & mp,Field & mmp, Field & tmp);
+  virtual void Vstart(Field & in, Field & src, Field & r, Field & mp, Field & mmp, Field & tmp);
+}
+*/
 #endif

Grid/algorithms/iterative/AdefMrhs.h

@@ -1,734 +0,0 @@
-    /*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/iterative/AdefGeneric.h
-
-    Copyright (C) 2015
-
-Author: Peter Boyle <paboyle@ph.ed.ac.uk>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-    *************************************************************************************/
-    /*  END LEGAL */
-#pragma once
-
-
-  /*
-   * Compared to Tang-2009:  P=Pleft. P^T = PRight Q=MssInv. 
-   * Script A = SolverMatrix 
-   * Script P = Preconditioner
-   *
-   * Implement ADEF-2
-   *
-   * Vstart = P^Tx + Qb
-   * M1 = P^TM + Q
-   * M2=M3=1
-   */
-NAMESPACE_BEGIN(Grid);
-
-
-template<class Field>
-class TwoLevelCGmrhs
-{
- public:
-  RealD   Tolerance;
-  Integer MaxIterations;
-  GridBase *grid;
-
-  // Fine operator, Smoother, CoarseSolver
-  LinearOperatorBase<Field>   &_FineLinop;
-  LinearFunction<Field>   &_Smoother;
-  MultiRHSBlockCGLinalg<Field> _BlockCGLinalg;
-
-  GridStopWatch ProjectTimer;
-  GridStopWatch PromoteTimer;
-  GridStopWatch DeflateTimer;
-  GridStopWatch CoarseTimer;
-  GridStopWatch FineTimer;
-  GridStopWatch SmoothTimer;
-  GridStopWatch InsertTimer;
-
-  /*
-    Field rrr;
-  Field sss;
-  Field qqq;
-  Field zzz;
-  */  
-  // more most opertor functions
-  TwoLevelCGmrhs(RealD tol,
-		 Integer maxit,
-		 LinearOperatorBase<Field>   &FineLinop,
-		 LinearFunction<Field>       &Smoother,
-		 GridBase *fine) : 
-    Tolerance(tol), 
-    MaxIterations(maxit),
-    _FineLinop(FineLinop),
-    _Smoother(Smoother)
-    /*
-    rrr(fine),
-    sss(fine),
-    qqq(fine),
-    zzz(fine)
-*/
-  {
-    grid       = fine;
-  };
-  
-  // Vector case
-  virtual void operator() (std::vector<Field> &src, std::vector<Field> &x)
-  {
-    //    SolveSingleSystem(src,x);
-    SolvePrecBlockCG(src,x);
-  }
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// Thin QR factorisation (google it)
-////////////////////////////////////////////////////////////////////////////////////////////////////
-  ////////////////////////////////////////////////////////////////////////////////////////////////////
-  //Dimensions
-  // R_{ferm x Nblock} =  Q_{ferm x Nblock} x  C_{Nblock x Nblock} -> ferm x Nblock
-  //
-  // Rdag R = m_rr = Herm = L L^dag        <-- Cholesky decomposition (LLT routine in Eigen)
-  //
-  //   Q  C = R => Q = R C^{-1}
-  //
-  // Want  Ident = Q^dag Q = C^{-dag} R^dag R C^{-1} = C^{-dag} L L^dag C^{-1} = 1_{Nblock x Nblock} 
-  //
-  // Set C = L^{dag}, and then Q^dag Q = ident 
-  //
-  // Checks:
-  // Cdag C = Rdag R ; passes.
-  // QdagQ  = 1      ; passes
-  ////////////////////////////////////////////////////////////////////////////////////////////////////
-  void ThinQRfact (Eigen::MatrixXcd &m_zz,
-		   Eigen::MatrixXcd &C,
-		   Eigen::MatrixXcd &Cinv,
-		   std::vector<Field> &  Q,
-		   std::vector<Field> & MQ,
-		   const std::vector<Field> & Z,
-		   const std::vector<Field> & MZ)
-  {
-    RealD t0=usecond();
-    _BlockCGLinalg.InnerProductMatrix(m_zz,MZ,Z);
-    RealD t1=usecond();
-
-    m_zz = 0.5*(m_zz+m_zz.adjoint());
-    
-    Eigen::MatrixXcd L    = m_zz.llt().matrixL(); 
-    
-    C    = L.adjoint();
-    Cinv = C.inverse();
-    
-    RealD t3=usecond();
-    _BlockCGLinalg.MulMatrix( Q,Cinv,Z);
-    _BlockCGLinalg.MulMatrix(MQ,Cinv,MZ);
-    RealD t4=usecond();
-    std::cout << " ThinQRfact IP    :"<< t1-t0<<" us"<<std::endl;
-    std::cout << " ThinQRfact Eigen :"<< t3-t1<<" us"<<std::endl;
-    std::cout << " ThinQRfact MulMat:"<< t4-t3<<" us"<<std::endl;
-  }
-
-  virtual void SolvePrecBlockCG (std::vector<Field> &src, std::vector<Field> &X)
-  {
-    std::cout << GridLogMessage<<"HDCG: mrhs fPrecBlockcg starting"<<std::endl;
-    src[0].Grid()->Barrier();
-    int nrhs = src.size();
-    //    std::vector<RealD> f(nrhs);
-    //    std::vector<RealD> rtzp(nrhs);
-    //    std::vector<RealD> rtz(nrhs);
-    //    std::vector<RealD> a(nrhs);
-    //    std::vector<RealD> d(nrhs);
-    //    std::vector<RealD> b(nrhs);
-    //    std::vector<RealD> rptzp(nrhs);
-
-    ////////////////////////////////////////////
-    //Initial residual computation & set up
-    ////////////////////////////////////////////
-    std::vector<RealD> ssq(nrhs);
-    for(int rhs=0;rhs<nrhs;rhs++){
-      ssq[rhs]=norm2(src[rhs]); GRID_ASSERT(ssq[rhs]!=0.0);
-    }      
-
-    ///////////////////////////
-    // Fields -- eliminate duplicates between fPcg and block cg
-    ///////////////////////////
-    std::vector<Field> Mtmp(nrhs,grid);
-    std::vector<Field> tmp(nrhs,grid);
-    std::vector<Field>   Z(nrhs,grid); // Rename Z to R
-    std::vector<Field>  MZ(nrhs,grid); // Rename MZ to Z
-    std::vector<Field>   Q(nrhs,grid); // 
-    std::vector<Field>  MQ(nrhs,grid); // Rename to P
-    std::vector<Field>   D(nrhs,grid);
-    std::vector<Field>  AD(nrhs,grid);
-    
-    /************************************************************************
-     * Preconditioned Block conjugate gradient rQ
-     * Generalise Sebastien Birk Thesis, after Dubrulle 2001.
-     * Introduce preconditioning following Saad Ch9
-     ************************************************************************
-     * Dimensions:
-     *
-     *   X,B etc... ==(Nferm x nrhs)
-     *  Matrix A==(Nferm x Nferm)
-     *  
-     * Nferm = Nspin x Ncolour x Ncomplex x Nlattice_site
-     * QC => Thin QR factorisation (google it)
-     *
-     * R = B-AX
-     * Z = Mi R
-     * QC = Z
-     * D = Q 
-     * for k: 
-     *   R  = AD
-     *   Z  = Mi R
-     *   M  = [D^dag R]^{-1}
-     *   X  = X + D M C
-     *   QS = Q - Z.M
-     *   D  = Q + D S^dag
-     *   C  = S C
-     */
-    Eigen::MatrixXcd m_DZ     = Eigen::MatrixXcd::Identity(nrhs,nrhs);
-    Eigen::MatrixXcd m_M      = Eigen::MatrixXcd::Identity(nrhs,nrhs);
-    Eigen::MatrixXcd m_zz     = Eigen::MatrixXcd::Zero(nrhs,nrhs);
-    Eigen::MatrixXcd m_rr     = Eigen::MatrixXcd::Zero(nrhs,nrhs);
-    
-    Eigen::MatrixXcd m_C      = Eigen::MatrixXcd::Zero(nrhs,nrhs);
-    Eigen::MatrixXcd m_Cinv   = Eigen::MatrixXcd::Zero(nrhs,nrhs);
-    Eigen::MatrixXcd m_S      = Eigen::MatrixXcd::Zero(nrhs,nrhs);
-    Eigen::MatrixXcd m_Sinv   = Eigen::MatrixXcd::Zero(nrhs,nrhs);
-    
-    Eigen::MatrixXcd m_tmp    = Eigen::MatrixXcd::Identity(nrhs,nrhs);
-    Eigen::MatrixXcd m_tmp1   = Eigen::MatrixXcd::Identity(nrhs,nrhs);
-
-    GridStopWatch HDCGTimer;
-
-    //////////////////////////
-    // x0 = Vstart -- possibly modify guess
-    //////////////////////////
-    Vstart(X,src);
-
-    //////////////////////////
-    // R = B-AX
-    //////////////////////////
-    for(int rhs=0;rhs<nrhs;rhs++){
-      // r0 = b -A x0
-      _FineLinop.HermOp(X[rhs],tmp[rhs]);
-      axpy (Z[rhs], -1.0,tmp[rhs], src[rhs]);    // Computes R=Z=src - A X0
-    }
-
-    //////////////////////////////////
-    // Compute MZ = M1 Z = M1 B - M1 A x0
-    //////////////////////////////////
-    PcgM1(Z,MZ);  
-
-    //////////////////////////////////
-    // QC = Z
-    //////////////////////////////////
-    ThinQRfact (m_zz, m_C, m_Cinv, Q, MQ, Z, MZ);
-
-    //////////////////////////////////
-    // D=MQ
-    //////////////////////////////////
-    for(int b=0;b<nrhs;b++) D[b]=MQ[b]; // LLT rotation of the MZ basis of search dirs
-
-    std::cout << GridLogMessage<<"PrecBlockCGrQ vec computed initial residual and QR fact " <<std::endl;
-
-    ProjectTimer.Reset();
-    PromoteTimer.Reset();
-    DeflateTimer.Reset();
-    CoarseTimer.Reset();
-    SmoothTimer.Reset();
-    FineTimer.Reset();
-    InsertTimer.Reset();
-
-    GridStopWatch M1Timer;
-    GridStopWatch M2Timer;
-    GridStopWatch M3Timer;
-    GridStopWatch LinalgTimer;
-    GridStopWatch InnerProdTimer;
-
-    HDCGTimer.Start();
-
-    std::vector<RealD> rn(nrhs);
-    for (int k=0;k<=MaxIterations;k++){
-
-      ////////////////////
-      // Z  = AD
-      ////////////////////
-      M3Timer.Start();
-      for(int b=0;b<nrhs;b++) _FineLinop.HermOp(D[b], Z[b]);      
-      M3Timer.Stop();
-
-      ////////////////////
-      // MZ  = M1 Z <==== the Multigrid preconditioner
-      ////////////////////
-      M1Timer.Start();
-      PcgM1(Z,MZ);
-      M1Timer.Stop();
-
-      FineTimer.Start();
-      ////////////////////
-      // M  = [D^dag Z]^{-1} = (<Ddag MZ>_M)^{-1} inner prod, generalising Saad derivation of Precon CG
-      ////////////////////
-      InnerProdTimer.Start();
-      _BlockCGLinalg.InnerProductMatrix(m_DZ,D,Z);
-      InnerProdTimer.Stop();
-      m_M       = m_DZ.inverse();
-
-      ///////////////////////////
-      // X  = X + D MC
-      ///////////////////////////
-      m_tmp     = m_M * m_C;
-      LinalgTimer.Start();
-      _BlockCGLinalg.MaddMatrix(X,m_tmp, D,X);     // D are the search directions and X takes the updates 
-      LinalgTimer.Stop();
-
-      ///////////////////////////
-      // QS = Q - M Z
-      // (MQ) S = MQ - M (M1Z)
-      ///////////////////////////
-      LinalgTimer.Start();
-      _BlockCGLinalg.MaddMatrix(tmp ,m_M, Z, Q,-1.0);
-      _BlockCGLinalg.MaddMatrix(Mtmp,m_M,MZ,MQ,-1.0);
-      ThinQRfact (m_zz, m_S, m_Sinv, Q, MQ, tmp, Mtmp);
-      LinalgTimer.Stop();
-
-      ////////////////////////////
-      // D  = MQ + D S^dag
-      ////////////////////////////
-      m_tmp = m_S.adjoint();
-      LinalgTimer.Start();
-      _BlockCGLinalg.MaddMatrix(D,m_tmp,D,MQ);
-      LinalgTimer.Stop();
-
-      ////////////////////////////
-      // C  = S C
-      ////////////////////////////
-      m_C = m_S*m_C;
-      
-      ////////////////////////////
-      // convergence monitor
-      ////////////////////////////
-      m_rr = m_C.adjoint() * m_C;
-      
-      FineTimer.Stop();
-
-      RealD max_resid=0;
-      RealD rrsum=0;
-      RealD sssum=0;
-      RealD rr;
-
-      for(int b=0;b<nrhs;b++) {
-	rrsum+=real(m_rr(b,b));
-	sssum+=ssq[b];
-	rr = real(m_rr(b,b))/ssq[b];
-	if ( rr > max_resid ) max_resid = rr;
-      }
-      std::cout << GridLogMessage <<
-	  "\t Prec BlockCGrQ Iteration "<<k<<" ave resid "<< std::sqrt(rrsum/sssum) << " max "<< std::sqrt(max_resid) <<std::endl;
-
-
-      if ( max_resid < Tolerance*Tolerance ) { 
-
-	HDCGTimer.Stop();
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ converged in "<<k<<" iterations and "<<HDCGTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : Linalg  "<<LinalgTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : fine H  "<<M3Timer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : prec M1 "<<M1Timer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"**** M1 breakdown:"<<std::endl;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : Project "<<ProjectTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : Promote "<<PromoteTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : Deflate "<<DeflateTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : Coarse  "<<CoarseTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : Fine    "<<FineTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : Smooth  "<<SmoothTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs PrecBlockCGrQ : Insert  "<<InsertTimer.Elapsed()<<std::endl;;
-
-	for(int rhs=0;rhs<nrhs;rhs++){
-
-	  _FineLinop.HermOp(X[rhs],tmp[rhs]);			  
-
-	  Field mytmp(grid);
-	  axpy(mytmp,-1.0,src[rhs],tmp[rhs]);
-      
-	  RealD  xnorm   = sqrt(norm2(X[rhs]));
-	  RealD  srcnorm = sqrt(norm2(src[rhs]));
-	  RealD  tmpnorm = sqrt(norm2(mytmp));
-	  RealD  true_residual = tmpnorm/srcnorm;
-	  std::cout<<GridLogMessage
-		   <<"HDCG: true residual ["<<rhs<<"] is "<<true_residual
-		   <<" solution "<<xnorm
-		   <<" source "<<srcnorm
-		   <<std::endl;
-	}
-	return;
-      }
-      
-    }
-    HDCGTimer.Stop();
-    std::cout<<GridLogMessage<<"HDCG: PrecBlockCGrQ not converged "<<HDCGTimer.Elapsed()<<std::endl;
-    GRID_ASSERT(0);
-  }
-
-  virtual void SolveSingleSystem (std::vector<Field> &src, std::vector<Field> &x)
-  {
-    std::cout << GridLogMessage<<"HDCG: mrhs fPcg starting"<<std::endl;
-    src[0].Grid()->Barrier();
-    int nrhs = src.size();
-    std::vector<RealD> f(nrhs);
-    std::vector<RealD> rtzp(nrhs);
-    std::vector<RealD> rtz(nrhs);
-    std::vector<RealD> a(nrhs);
-    std::vector<RealD> d(nrhs);
-    std::vector<RealD> b(nrhs);
-    std::vector<RealD> rptzp(nrhs);
-    /////////////////////////////
-    // Set up history vectors
-    /////////////////////////////
-    int mmax = 3;
-
-    std::vector<std::vector<Field> > p(nrhs);   for(int r=0;r<nrhs;r++)  p[r].resize(mmax,grid);
-    std::vector<std::vector<Field> > mmp(nrhs); for(int r=0;r<nrhs;r++) mmp[r].resize(mmax,grid);
-    std::vector<std::vector<RealD> > pAp(nrhs); for(int r=0;r<nrhs;r++) pAp[r].resize(mmax);
-
-    std::vector<Field> z(nrhs,grid);
-    std::vector<Field>  mp (nrhs,grid);
-    std::vector<Field>  r  (nrhs,grid);
-    std::vector<Field>  mu (nrhs,grid);
-
-    //Initial residual computation & set up
-    std::vector<RealD> src_nrm(nrhs);
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      src_nrm[rhs]=norm2(src[rhs]);
-      GRID_ASSERT(src_nrm[rhs]!=0.0);
-    }
-    std::vector<RealD> tn(nrhs);
-
-    GridStopWatch HDCGTimer;
-    //////////////////////////
-    // x0 = Vstart -- possibly modify guess
-    //////////////////////////
-    Vstart(x,src);
-
-    for(int rhs=0;rhs<nrhs;rhs++){
-      // r0 = b -A x0
-      _FineLinop.HermOp(x[rhs],mmp[rhs][0]);
-      axpy (r[rhs], -1.0,mmp[rhs][0], src[rhs]);    // Recomputes r=src-Ax0
-    }
-
-    //////////////////////////////////
-    // Compute z = M1 x
-    //////////////////////////////////
-    // This needs a multiRHS version for acceleration
-    PcgM1(r,z);
-
-    std::vector<RealD> ssq(nrhs);
-    std::vector<RealD> rsq(nrhs);
-    std::vector<Field> pp(nrhs,grid);
-
-    for(int rhs=0;rhs<nrhs;rhs++){
-      rtzp[rhs] =real(innerProduct(r[rhs],z[rhs]));
-      p[rhs][0]=z[rhs];
-      ssq[rhs]=norm2(src[rhs]);
-      rsq[rhs]=  ssq[rhs]*Tolerance*Tolerance;
-      //      std::cout << GridLogMessage<<"mrhs HDCG: "<<rhs<<" k=0 residual "<<rtzp[rhs]<<" rsq "<<rsq[rhs]<<"\n";
-    }
-
-    ProjectTimer.Reset();
-    PromoteTimer.Reset();
-    DeflateTimer.Reset();
-    CoarseTimer.Reset();
-    SmoothTimer.Reset();
-    FineTimer.Reset();
-    InsertTimer.Reset();
-
-    GridStopWatch M1Timer;
-    GridStopWatch M2Timer;
-    GridStopWatch M3Timer;
-    GridStopWatch LinalgTimer;
-
-    HDCGTimer.Start();
-
-    std::vector<RealD> rn(nrhs);
-    for (int k=0;k<=MaxIterations;k++){
-    
-      int peri_k  = k % mmax;
-      int peri_kp = (k+1) % mmax;
-
-      for(int rhs=0;rhs<nrhs;rhs++){
-	rtz[rhs]=rtzp[rhs];
-	M3Timer.Start();
-	d[rhs]= PcgM3(p[rhs][peri_k],mmp[rhs][peri_k]);
-	M3Timer.Stop();
-	a[rhs] = rtz[rhs]/d[rhs];
-
-	LinalgTimer.Start();
-	// Memorise this
-	pAp[rhs][peri_k] = d[rhs];
-
-	axpy(x[rhs],a[rhs],p[rhs][peri_k],x[rhs]);
-	rn[rhs] = axpy_norm(r[rhs],-a[rhs],mmp[rhs][peri_k],r[rhs]);
-	LinalgTimer.Stop();
-      }
-
-      // Compute z = M x (for *all* RHS)
-      M1Timer.Start();
-      PcgM1(r,z);
-      M1Timer.Stop();
-      
-      RealD max_rn=0.0;
-      LinalgTimer.Start();
-      for(int rhs=0;rhs<nrhs;rhs++){
-
-	rtzp[rhs] =real(innerProduct(r[rhs],z[rhs]));
-
-	//	std::cout << GridLogMessage<<"HDCG::fPcg rhs"<<rhs<<" iteration "<<k<<" : inner rtzp "<<rtzp[rhs]<<"\n";
-	mu[rhs]=z[rhs];
-
-	p[rhs][peri_kp]=mu[rhs];
-
-	// Standard search direction p == z + b p 
-	b[rhs] = (rtzp[rhs])/rtz[rhs];
-
-	int northog = (k>mmax-1)?(mmax-1):k;        // This is the fCG-Tr(mmax-1) algorithm
-	for(int back=0; back < northog; back++){
-	  int peri_back = (k-back)%mmax;
-	  RealD pbApk= real(innerProduct(mmp[rhs][peri_back],p[rhs][peri_kp]));
-	  RealD beta = -pbApk/pAp[rhs][peri_back];
-	  axpy(p[rhs][peri_kp],beta,p[rhs][peri_back],p[rhs][peri_kp]);
-	}
-
-	RealD rrn=sqrt(rn[rhs]/ssq[rhs]);
-	RealD rtn=sqrt(rtz[rhs]/ssq[rhs]);
-	RealD rtnp=sqrt(rtzp[rhs]/ssq[rhs]);
-	
-	std::cout<<GridLogMessage<<"HDCG:fPcg rhs "<<rhs<<" k= "<<k<<" residual = "<<rrn<<"\n";
-	if ( rrn > max_rn ) max_rn = rrn;
-      }
-      LinalgTimer.Stop();
-
-      // Stopping condition based on worst case
-      if ( max_rn <= Tolerance ) { 
-
-	HDCGTimer.Stop();
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg converged in "<<k<<" iterations and "<<HDCGTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : Linalg  "<<LinalgTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : fine M3 "<<M3Timer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : prec M1 "<<M1Timer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"**** M1 breakdown:"<<std::endl;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : Project "<<ProjectTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : Promote "<<PromoteTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : Deflate "<<DeflateTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : Coarse  "<<CoarseTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : Fine    "<<FineTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : Smooth  "<<SmoothTimer.Elapsed()<<std::endl;;
-	std::cout<<GridLogMessage<<"HDCG: mrhs fPcg : Insert  "<<InsertTimer.Elapsed()<<std::endl;;
-
-	for(int rhs=0;rhs<nrhs;rhs++){
-	  _FineLinop.HermOp(x[rhs],mmp[rhs][0]);			  
-	  Field tmp(grid);
-	  axpy(tmp,-1.0,src[rhs],mmp[rhs][0]);
-      
-	  RealD  mmpnorm = sqrt(norm2(mmp[rhs][0]));
-	  RealD  xnorm   = sqrt(norm2(x[rhs]));
-	  RealD  srcnorm = sqrt(norm2(src[rhs]));
-	  RealD  tmpnorm = sqrt(norm2(tmp));
-	  RealD  true_residual = tmpnorm/srcnorm;
-	  std::cout<<GridLogMessage
-		   <<"HDCG: true residual ["<<rhs<<"] is "<<true_residual
-		   <<" solution "<<xnorm
-		   <<" source "<<srcnorm
-		   <<" mmp "<<mmpnorm	  
-		   <<std::endl;
-	}
-	return;
-      }
-      
-    }
-    HDCGTimer.Stop();
-    std::cout<<GridLogMessage<<"HDCG: not converged "<<HDCGTimer.Elapsed()<<std::endl;
-    for(int rhs=0;rhs<nrhs;rhs++){
-      RealD  xnorm   = sqrt(norm2(x[rhs]));
-      RealD  srcnorm = sqrt(norm2(src[rhs]));
-      std::cout<<GridLogMessage<<"HDCG: non-converged solution "<<xnorm<<" source "<<srcnorm<<std::endl;
-    }
-  }
-  
-
- public:
-
-  virtual void PcgM1(std::vector<Field> & in,std::vector<Field> & out) = 0;
-  virtual void Vstart(std::vector<Field> & x,std::vector<Field> & src) = 0;
-  virtual void PcgM2(const Field & in, Field & out) {
-    out=in;
-  }
-
-  virtual RealD PcgM3(const Field & p, Field & mmp){
-    RealD dd;
-    _FineLinop.HermOp(p,mmp);
-    ComplexD dot = innerProduct(p,mmp);
-    dd=real(dot);
-    return dd;
-  }
-
-};
-
-template<class Field, class CoarseField>
-class TwoLevelADEF2mrhs : public TwoLevelCGmrhs<Field>
-{
-public:
-  GridBase *coarsegrid;
-  GridBase *coarsegridmrhs;
-  LinearFunction<CoarseField> &_CoarseSolverMrhs;
-  LinearFunction<CoarseField> &_CoarseSolverPreciseMrhs;
-  MultiRHSBlockProject<Field>    &_Projector;
-  MultiRHSDeflation<CoarseField> &_Deflator;
-
-  
-  TwoLevelADEF2mrhs(RealD tol,
-		    Integer maxit,
-		    LinearOperatorBase<Field>    &FineLinop,
-		    LinearFunction<Field>        &Smoother,
-		    LinearFunction<CoarseField>  &CoarseSolverMrhs,
-		    LinearFunction<CoarseField>  &CoarseSolverPreciseMrhs,
-		    MultiRHSBlockProject<Field>    &Projector,
-		    MultiRHSDeflation<CoarseField> &Deflator,
-		    GridBase *_coarsemrhsgrid) :
-    TwoLevelCGmrhs<Field>(tol, maxit,FineLinop,Smoother,Projector.fine_grid),
-    _CoarseSolverMrhs(CoarseSolverMrhs),
-    _CoarseSolverPreciseMrhs(CoarseSolverPreciseMrhs),
-    _Projector(Projector),
-    _Deflator(Deflator)
-  {
-    coarsegrid = Projector.coarse_grid;
-    coarsegridmrhs = _coarsemrhsgrid;// Thi could be in projector
-  };
-
-  // Override Vstart
-  virtual void Vstart(std::vector<Field> & x,std::vector<Field> & src)
-  {
-    int nrhs=x.size();
-    ///////////////////////////////////
-    // Choose x_0 such that 
-    // x_0 = guess +  (A_ss^inv) r_s = guess + Ass_inv [src -Aguess]
-    //                               = [1 - Ass_inv A] Guess + Assinv src
-    //                               = P^T guess + Assinv src 
-    //                               = Vstart  [Tang notation]
-    // This gives:
-    // W^T (src - A x_0) = src_s - A guess_s - r_s
-    //                   = src_s - (A guess)_s - src_s  + (A guess)_s 
-    //                   = 0 
-    ///////////////////////////////////
-    std::vector<CoarseField> PleftProj(nrhs,this->coarsegrid);
-    std::vector<CoarseField> PleftMss_proj(nrhs,this->coarsegrid);
-    CoarseField PleftProjMrhs(this->coarsegridmrhs);
-    CoarseField PleftMss_projMrhs(this->coarsegridmrhs);
-
-    this->_Projector.blockProject(src,PleftProj);
-    this->_Deflator.DeflateSources(PleftProj,PleftMss_proj);
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      InsertSliceFast(PleftProj[rhs],PleftProjMrhs,rhs,0);
-      InsertSliceFast(PleftMss_proj[rhs],PleftMss_projMrhs,rhs,0); // the guess
-    }
-    
-    this->_CoarseSolverPreciseMrhs(PleftProjMrhs,PleftMss_projMrhs); // Ass^{-1} r_s
-
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      ExtractSliceFast(PleftMss_proj[rhs],PleftMss_projMrhs,rhs,0);
-    }
-    this->_Projector.blockPromote(x,PleftMss_proj);
-  }
-
-  virtual void PcgM1(std::vector<Field> & in,std::vector<Field> & out){
-
-    int nrhs=in.size();
-
-    // [PTM+Q] in = [1 - Q A] M in + Q in = Min + Q [ in -A Min]
-    std::vector<Field> tmp(nrhs,this->grid);
-    std::vector<Field> Min(nrhs,this->grid);
-
-    std::vector<CoarseField> PleftProj(nrhs,this->coarsegrid);
-    std::vector<CoarseField> PleftMss_proj(nrhs,this->coarsegrid);
-
-    CoarseField PleftProjMrhs(this->coarsegridmrhs);
-    CoarseField PleftMss_projMrhs(this->coarsegridmrhs);
-
-    //    this->rrr=in[0];
-
-#undef SMOOTHER_BLOCK_SOLVE
-#if SMOOTHER_BLOCK_SOLVE
-    this->SmoothTimer.Start();
-    this->_Smoother(in,Min);
-    this->SmoothTimer.Stop();
-#else
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      this->SmoothTimer.Start();
-      this->_Smoother(in[rhs],Min[rhs]);
-      this->SmoothTimer.Stop();
-    }
-#endif
-    //    this->sss=Min[0];
-    
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      
-      this->FineTimer.Start();
-      this->_FineLinop.HermOp(Min[rhs],out[rhs]);
-      axpy(tmp[rhs],-1.0,out[rhs],in[rhs]);          // resid  = in - A Min
-      this->FineTimer.Stop();
-
-    }
-
-    this->ProjectTimer.Start();
-    this->_Projector.blockProject(tmp,PleftProj);
-    this->ProjectTimer.Stop();
-    this->DeflateTimer.Start();
-    this->_Deflator.DeflateSources(PleftProj,PleftMss_proj);
-    this->DeflateTimer.Stop();
-    this->InsertTimer.Start();
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      InsertSliceFast(PleftProj[rhs],PleftProjMrhs,rhs,0);
-      InsertSliceFast(PleftMss_proj[rhs],PleftMss_projMrhs,rhs,0); // the guess
-    }
-    this->InsertTimer.Stop();
-
-    this->CoarseTimer.Start();
-    this->_CoarseSolverMrhs(PleftProjMrhs,PleftMss_projMrhs); // Ass^{-1} [in - A Min]_s
-    this->CoarseTimer.Stop();
-
-    this->InsertTimer.Start();
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      ExtractSliceFast(PleftMss_proj[rhs],PleftMss_projMrhs,rhs,0);
-    }
-    this->InsertTimer.Stop();
-    this->PromoteTimer.Start();
-    this->_Projector.blockPromote(tmp,PleftMss_proj);// tmp= Q[in - A Min]  
-    this->PromoteTimer.Stop();
-    this->FineTimer.Start();
-    //    this->qqq=tmp[0];
-    for(int rhs=0;rhs<nrhs;rhs++) {
-      axpy(out[rhs],1.0,Min[rhs],tmp[rhs]); // Min+tmp
-    }
-    //    this->zzz=out[0];
-    this->FineTimer.Stop();
-  }
-};
-
-
-NAMESPACE_END(Grid);
-
-

Grid/algorithms/iterative/BiCGSTAB.h

@@ -47,7 +47,7 @@ class BiCGSTAB : public OperatorFunction<Field>
   public:
     using OperatorFunction<Field>::operator();
     
-    bool ErrorOnNoConverge;  // throw an GRID_ASSERT when the CG fails to converge.
+    bool ErrorOnNoConverge;  // throw an assert when the CG fails to converge.
                              // Defaults true.
     RealD Tolerance;
     Integer MaxIterations;
@@ -77,7 +77,7 @@ class BiCGSTAB : public OperatorFunction<Field>
 
       // Initial residual computation & set up
       RealD guess = norm2(psi);
-      GRID_ASSERT(std::isnan(guess) == 0);
+      assert(std::isnan(guess) == 0);
     
       Linop.Op(psi, v);
       b = norm2(v);
@@ -214,7 +214,7 @@ class BiCGSTAB : public OperatorFunction<Field>
           std::cout << GridLogMessage << "\tAxpyNorm   " << AxpyNormTimer.Elapsed() << std::endl;
           std::cout << GridLogMessage << "\tLinearComb " << LinearCombTimer.Elapsed() << std::endl;
 
-          if(ErrorOnNoConverge){ GRID_ASSERT(true_residual / Tolerance < 10000.0); }
+          if(ErrorOnNoConverge){ assert(true_residual / Tolerance < 10000.0); }
 
           IterationsToComplete = k;	
 
@@ -224,7 +224,7 @@ class BiCGSTAB : public OperatorFunction<Field>
       
       std::cout << GridLogMessage << "BiCGSTAB did NOT converge" << std::endl;
 
-      if(ErrorOnNoConverge){ GRID_ASSERT(0); }
+      if(ErrorOnNoConverge){ assert(0); }
       IterationsToComplete = k;
     }
 };

Grid/algorithms/iterative/BiCGSTABMixedPrec.h

@@ -37,7 +37,6 @@ template<class FieldD, class FieldF, typename std::enable_if< getPrecision<Field
 class MixedPrecisionBiCGSTAB : public LinearFunction<FieldD> 
 {
   public:                                                
-    using LinearFunction<FieldD>::operator();
     RealD   Tolerance;
     RealD   InnerTolerance; // Initial tolerance for inner CG. Defaults to Tolerance but can be changed
     Integer MaxInnerIterations;

Grid/algorithms/iterative/BlockConjugateGradient.h

@@ -31,58 +31,6 @@ directory
 
 NAMESPACE_BEGIN(Grid);
 
-template<class Field>
-void InnerProductMatrix(Eigen::MatrixXcd &m , const std::vector<Field> &X, const std::vector<Field> &Y){
-  typedef typename Field::scalar_type scomplex;
-  int Nblock = X.size();
-  for(int b=0;b<Nblock;b++){
-  for(int bp=0;bp<Nblock;bp++) {
-    m(b,bp) = innerProduct(X[b],Y[bp]);  
-  }}
-}
-template<class Field>
-void MaddMatrix(std::vector<Field> &AP, Eigen::MatrixXcd &m , const std::vector<Field> &X,const std::vector<Field> &Y,RealD scale=1.0){
-  // Should make this cache friendly with site outermost, parallel_for
-  // Deal with case AP aliases with either Y or X
-  //
-  //Could pack "X" and "AP" into a Nblock x Volume dense array.
-  // AP(Nrhs x vol) = Y(Nrhs x vol) + scale * m(nrhs x nrhs) * X(nrhs*vol)
-  typedef typename Field::scalar_type scomplex;
-  int Nblock = AP.size();
-  std::vector<Field> tmp(Nblock,X[0]);
-  for(int b=0;b<Nblock;b++){
-    tmp[b]   = Y[b];
-    for(int bp=0;bp<Nblock;bp++) {
-      tmp[b] = tmp[b] +scomplex(scale*m(bp,b))*X[bp]; 
-    }
-  }
-  for(int b=0;b<Nblock;b++){
-    AP[b] = tmp[b];
-  }
-}
-template<class Field>
-void MulMatrix(std::vector<Field> &AP, Eigen::MatrixXcd &m , const std::vector<Field> &X){
-  // Should make this cache friendly with site outermost, parallel_for
-  typedef typename Field::scalar_type scomplex;
-  int Nblock = AP.size();
-  for(int b=0;b<Nblock;b++){
-    AP[b] = Zero();
-    for(int bp=0;bp<Nblock;bp++) {
-      AP[b] += scomplex(m(bp,b))*X[bp]; 
-    }
-  }
-}
-template<class Field>
-double normv(const std::vector<Field> &P){
-  int Nblock = P.size();
-  double nn = 0.0;
-  for(int b=0;b<Nblock;b++) {
-    nn+=norm2(P[b]);
-  }
-  return nn;
-}
-
-
 enum BlockCGtype { BlockCG, BlockCGrQ, CGmultiRHS, BlockCGVec, BlockCGrQVec };
 
 //////////////////////////////////////////////////////////////////////////
@@ -98,7 +46,7 @@ class BlockConjugateGradient : public OperatorFunction<Field> {
   int Nblock;
 
   BlockCGtype CGtype;
-  bool ErrorOnNoConverge;  // throw an GRID_ASSERT when the CG fails to converge.
+  bool ErrorOnNoConverge;  // throw an assert when the CG fails to converge.
                            // Defaults true.
   RealD Tolerance;
   Integer MaxIterations;
@@ -139,19 +87,10 @@ void ThinQRfact (Eigen::MatrixXcd &m_rr,
   sliceInnerProductMatrix(m_rr,R,R,Orthog);
 
   // Force manifest hermitian to avoid rounding related
-  /*
-  int rank=m_rr.rows();
-  for(int r=0;r<rank;r++){
-  for(int s=0;s<rank;s++){
-    std::cout << "QR m_rr["<<r<<","<<s<<"] "<<m_rr(r,s)<<std::endl;
-  }}
-  */
   m_rr = 0.5*(m_rr+m_rr.adjoint());
 
   Eigen::MatrixXcd L    = m_rr.llt().matrixL(); 
 
-//  ComplexD det = L.determinant();
-//  std::cout << " Det m_rr "<<det<<std::endl;
   C    = L.adjoint();
   Cinv = C.inverse();
   ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -171,20 +110,11 @@ void ThinQRfact (Eigen::MatrixXcd &m_rr,
 		 const std::vector<Field> & R)
 {
   InnerProductMatrix(m_rr,R,R);
-  /*
+
-  int rank=m_rr.rows();
-  for(int r=0;r<rank;r++){
-  for(int s=0;s<rank;s++){
-    std::cout << "QRvec m_rr["<<r<<","<<s<<"] "<<m_rr(r,s)<<std::endl;
-  }}
-  */
   m_rr = 0.5*(m_rr+m_rr.adjoint());
 
   Eigen::MatrixXcd L    = m_rr.llt().matrixL(); 
 
-  //  ComplexD det = L.determinant();
-  //  std::cout << " Det m_rr "<<det<<std::endl;
-
   C    = L.adjoint();
   Cinv = C.inverse();
 
@@ -201,7 +131,7 @@ void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi)
   } else if (CGtype == CGmultiRHS ) {
     CGmultiRHSsolve(Linop,Src,Psi);
   } else {
-    GRID_ASSERT(0);
+    assert(0);
   }
 }
 virtual void operator()(LinearOperatorBase<Field> &Linop, const std::vector<Field> &Src, std::vector<Field> &Psi) 
@@ -209,7 +139,7 @@ virtual void operator()(LinearOperatorBase<Field> &Linop, const std::vector<Fiel
   if ( CGtype == BlockCGrQVec ) {
     BlockCGrQsolveVec(Linop,Src,Psi);
   } else {
-    GRID_ASSERT(0);
+    assert(0);
   }
 }
 
@@ -256,13 +186,12 @@ void BlockCGrQsolve(LinearOperatorBase<Field> &Linop, const Field &B, Field &X)
   sliceNorm(ssq,B,Orthog);
   RealD sssum=0;
   for(int b=0;b<Nblock;b++) sssum+=ssq[b];
-  for(int b=0;b<Nblock;b++) std::cout << "src["<<b<<"]" << ssq[b] <<std::endl;
 
   sliceNorm(residuals,B,Orthog);
-  for(int b=0;b<Nblock;b++){ GRID_ASSERT(std::isnan(residuals[b])==0); }
+  for(int b=0;b<Nblock;b++){ assert(std::isnan(residuals[b])==0); }
 
   sliceNorm(residuals,X,Orthog);
-  for(int b=0;b<Nblock;b++){ GRID_ASSERT(std::isnan(residuals[b])==0); }
+  for(int b=0;b<Nblock;b++){ assert(std::isnan(residuals[b])==0); }
 
   /************************************************************************
    * Block conjugate gradient rQ (Sebastien Birk Thesis, after Dubrulle 2001)
@@ -292,9 +221,6 @@ void BlockCGrQsolve(LinearOperatorBase<Field> &Linop, const Field &B, Field &X)
   Linop.HermOp(X, AD);
   tmp = B - AD;  
 
-  sliceNorm(residuals,tmp,Orthog);
-  for(int b=0;b<Nblock;b++) std::cout << "res["<<b<<"]" << residuals[b] <<std::endl;
-  
   ThinQRfact (m_rr, m_C, m_Cinv, Q, tmp);
   D=Q;
 
@@ -310,8 +236,6 @@ void BlockCGrQsolve(LinearOperatorBase<Field> &Linop, const Field &B, Field &X)
   GridStopWatch SolverTimer;
   SolverTimer.Start();
 
-  RealD max_resid=0;
-
   int k;
   for (k = 1; k <= MaxIterations; k++) {
 
@@ -356,7 +280,7 @@ void BlockCGrQsolve(LinearOperatorBase<Field> &Linop, const Field &B, Field &X)
      */
     m_rr = m_C.adjoint() * m_C;
 
-    max_resid=0;
+    RealD max_resid=0;
     RealD rrsum=0;
     RealD rr;
 
@@ -398,11 +322,9 @@ void BlockCGrQsolve(LinearOperatorBase<Field> &Linop, const Field &B, Field &X)
     }
 
   }
+  std::cout << GridLogMessage << "BlockConjugateGradient(rQ) did NOT converge" << std::endl;
 
-  std::cout << GridLogMessage << "BlockConjugateGradient(rQ) did NOT converge "<<k<<" / "<<MaxIterations
+  if (ErrorOnNoConverge) assert(0);
-	    <<" residual "<< std::sqrt(max_resid)<< std::endl;
-
-  if (ErrorOnNoConverge) GRID_ASSERT(0);
   IterationsToComplete = k;
 }
 //////////////////////////////////////////////////////////////////////////
@@ -438,10 +360,10 @@ void CGmultiRHSsolve(LinearOperatorBase<Field> &Linop, const Field &Src, Field &
   for(int b=0;b<Nblock;b++) sssum+=ssq[b];
 
   sliceNorm(residuals,Src,Orthog);
-  for(int b=0;b<Nblock;b++){ GRID_ASSERT(std::isnan(residuals[b])==0); }
+  for(int b=0;b<Nblock;b++){ assert(std::isnan(residuals[b])==0); }
 
   sliceNorm(residuals,Psi,Orthog);
-  for(int b=0;b<Nblock;b++){ GRID_ASSERT(std::isnan(residuals[b])==0); }
+  for(int b=0;b<Nblock;b++){ assert(std::isnan(residuals[b])==0); }
 
   // Initial search dir is guess
   Linop.HermOp(Psi, AP);
@@ -540,10 +462,47 @@ void CGmultiRHSsolve(LinearOperatorBase<Field> &Linop, const Field &Src, Field &
   }
   std::cout << GridLogMessage << "MultiRHSConjugateGradient did NOT converge" << std::endl;
 
-  if (ErrorOnNoConverge) GRID_ASSERT(0);
+  if (ErrorOnNoConverge) assert(0);
   IterationsToComplete = k;
 }
 
+void InnerProductMatrix(Eigen::MatrixXcd &m , const std::vector<Field> &X, const std::vector<Field> &Y){
+  for(int b=0;b<Nblock;b++){
+  for(int bp=0;bp<Nblock;bp++) {
+    m(b,bp) = innerProduct(X[b],Y[bp]);  
+  }}
+}
+void MaddMatrix(std::vector<Field> &AP, Eigen::MatrixXcd &m , const std::vector<Field> &X,const std::vector<Field> &Y,RealD scale=1.0){
+  // Should make this cache friendly with site outermost, parallel_for
+  // Deal with case AP aliases with either Y or X
+  std::vector<Field> tmp(Nblock,X[0]);
+  for(int b=0;b<Nblock;b++){
+    tmp[b]   = Y[b];
+    for(int bp=0;bp<Nblock;bp++) {
+      tmp[b] = tmp[b] + scomplex(scale*m(bp,b))*X[bp]; 
+    }
+  }
+  for(int b=0;b<Nblock;b++){
+    AP[b] = tmp[b];
+  }
+}
+void MulMatrix(std::vector<Field> &AP, Eigen::MatrixXcd &m , const std::vector<Field> &X){
+  // Should make this cache friendly with site outermost, parallel_for
+  for(int b=0;b<Nblock;b++){
+    AP[b] = Zero();
+    for(int bp=0;bp<Nblock;bp++) {
+      AP[b] += scomplex(m(bp,b))*X[bp]; 
+    }
+  }
+}
+double normv(const std::vector<Field> &P){
+  double nn = 0.0;
+  for(int b=0;b<Nblock;b++) {
+    nn+=norm2(P[b]);
+  }
+  return nn;
+}
+
 ////////////////////////////////////////////////////////////////////////////
 // BlockCGrQvec implementation:
 //--------------------------
@@ -554,7 +513,7 @@ void CGmultiRHSsolve(LinearOperatorBase<Field> &Linop, const Field &Src, Field &
 void BlockCGrQsolveVec(LinearOperatorBase<Field> &Linop, const std::vector<Field> &B, std::vector<Field> &X) 
 {
   Nblock = B.size();
-  GRID_ASSERT(Nblock == X.size());
+  assert(Nblock == X.size());
 
   std::cout<<GridLogMessage<<" Block Conjugate Gradient Vec rQ : Nblock "<<Nblock<<std::endl;
 
@@ -590,14 +549,13 @@ void BlockCGrQsolveVec(LinearOperatorBase<Field> &Linop, const std::vector<Field
 
   RealD sssum=0;
   for(int b=0;b<Nblock;b++){ ssq[b] = norm2(B[b]);}
-  for(int b=0;b<Nblock;b++){ std::cout << "ssq["<<b<<"] "<<ssq[b]<<std::endl;}
   for(int b=0;b<Nblock;b++) sssum+=ssq[b];
 
   for(int b=0;b<Nblock;b++){ residuals[b] = norm2(B[b]);}
-  for(int b=0;b<Nblock;b++){ GRID_ASSERT(std::isnan(residuals[b])==0); }
+  for(int b=0;b<Nblock;b++){ assert(std::isnan(residuals[b])==0); }
 
   for(int b=0;b<Nblock;b++){ residuals[b] = norm2(X[b]);}
-  for(int b=0;b<Nblock;b++){ GRID_ASSERT(std::isnan(residuals[b])==0); }
+  for(int b=0;b<Nblock;b++){ assert(std::isnan(residuals[b])==0); }
 
   /************************************************************************
    * Block conjugate gradient rQ (Sebastien Birk Thesis, after Dubrulle 2001)
@@ -627,7 +585,6 @@ void BlockCGrQsolveVec(LinearOperatorBase<Field> &Linop, const std::vector<Field
   for(int b=0;b<Nblock;b++) {
     Linop.HermOp(X[b], AD[b]);
     tmp[b] = B[b] - AD[b];  
-    std::cout << "r0["<<b<<"] "<<norm2(tmp[b])<<std::endl;
   }
 
   ThinQRfact (m_rr, m_C, m_Cinv, Q, tmp);
@@ -731,7 +688,7 @@ void BlockCGrQsolveVec(LinearOperatorBase<Field> &Linop, const std::vector<Field
   }
   std::cout << GridLogMessage << "BlockConjugateGradient(rQ) did NOT converge" << std::endl;
 
-  if (ErrorOnNoConverge) GRID_ASSERT(0);
+  if (ErrorOnNoConverge) assert(0);
   IterationsToComplete = k;
 }
 

Grid/algorithms/iterative/CommunicationAvoidingGeneralisedMinimalResidual.h

@@ -36,7 +36,7 @@ class CommunicationAvoidingGeneralisedMinimalResidual : public OperatorFunction<
  public:
   using OperatorFunction<Field>::operator();
 
-  bool ErrorOnNoConverge; // Throw an GRID_ASSERT when CAGMRES fails to converge,
+  bool ErrorOnNoConverge; // Throw an assert when CAGMRES fails to converge,
                           // defaults to true
 
   RealD   Tolerance;
@@ -82,7 +82,7 @@ class CommunicationAvoidingGeneralisedMinimalResidual : public OperatorFunction<
     conformable(psi, src);
 
     RealD guess = norm2(psi);
-    GRID_ASSERT(std::isnan(guess) == 0);
+    assert(std::isnan(guess) == 0);
 
     RealD cp;
     RealD ssq = norm2(src);
@@ -137,7 +137,7 @@ class CommunicationAvoidingGeneralisedMinimalResidual : public OperatorFunction<
     std::cout << GridLogMessage << "CommunicationAvoidingGeneralisedMinimalResidual did NOT converge" << std::endl;
 
     if (ErrorOnNoConverge)
-      GRID_ASSERT(0);
+      assert(0);
   }
 
   RealD outerLoopBody(LinearOperatorBase<Field> &LinOp, const Field &src, Field &psi, RealD rsq) {
@@ -185,7 +185,7 @@ class CommunicationAvoidingGeneralisedMinimalResidual : public OperatorFunction<
       }
     }
 
-    GRID_ASSERT(0); // Never reached
+    assert(0); // Never reached
     return cp;
   }
 

Grid/algorithms/iterative/ConjugateGradient.h

@@ -38,14 +38,13 @@ NAMESPACE_BEGIN(Grid);
 // single input vec, single output vec.
 /////////////////////////////////////////////////////////////
 
-
 template <class Field>
 class ConjugateGradient : public OperatorFunction<Field> {
 public:
 
   using OperatorFunction<Field>::operator();
 
-  bool ErrorOnNoConverge;  // throw an GRID_ASSERT when the CG fails to converge.
+  bool ErrorOnNoConverge;  // throw an assert when the CG fails to converge.
                            // Defaults true.
   RealD Tolerance;
   Integer MaxIterations;
@@ -55,26 +54,10 @@ public:
   ConjugateGradient(RealD tol, Integer maxit, bool err_on_no_conv = true)
     : Tolerance(tol),
       MaxIterations(maxit),
-      ErrorOnNoConverge(err_on_no_conv)
+      ErrorOnNoConverge(err_on_no_conv){};
-  {};
 
-  virtual void LogIteration(int k,RealD a,RealD b){
+  void operator()(LinearOperatorBase<Field> &Linop, const Field &src, Field &psi) {
-    //    std::cout << "ConjugageGradient::LogIteration() "<<std::endl;
-  };
-  virtual void LogBegin(void){
-    std::cout << "ConjugageGradient::LogBegin() "<<std::endl;
-  };
 
-    void operator()(LinearOperatorBase<Field> &Linop, const Field &src, Field &psi) {
-
-      this->LogBegin();
-
-      GRID_TRACE("ConjugateGradient");
-    GridStopWatch PreambleTimer;
-    GridStopWatch ConstructTimer;
-    GridStopWatch NormTimer;
-    GridStopWatch AssignTimer;
-    PreambleTimer.Start();
     psi.Checkerboard() = src.Checkerboard();
 
     conformable(psi, src);
@@ -82,32 +65,22 @@ public:
     RealD cp, c, a, d, b, ssq, qq;
     //RealD b_pred;
 
-    // Was doing copies
+    Field p(src);
-    ConstructTimer.Start();
+    Field mmp(src);
-    Field p  (src.Grid());
+    Field r(src);
-    Field mmp(src.Grid());
-    Field r  (src.Grid());
-    ConstructTimer.Stop();
 
     // Initial residual computation & set up
-    NormTimer.Start();
-    ssq = norm2(src);
     RealD guess = norm2(psi);
-    NormTimer.Stop();
+    assert(std::isnan(guess) == 0);
-    GRID_ASSERT(std::isnan(guess) == 0);
+    
-    AssignTimer.Start();
+    Linop.HermOpAndNorm(psi, mmp, d, b);
-    if ( guess == 0.0 ) {
+    
-      r = src;
+    r = src - mmp;
-      p = r;
+    p = r;
-      a = ssq;
+
-    } else { 
+    a = norm2(p);
-      Linop.HermOpAndNorm(psi, mmp, d, b);
-      r = src - mmp;
-      p = r;
-      a = norm2(p);
-    }
     cp = a;
-    AssignTimer.Stop();
+    ssq = norm2(src);
 
     // Handle trivial case of zero src
     if (ssq == 0.){
@@ -137,7 +110,6 @@ public:
     std::cout << GridLogIterative << std::setprecision(8)
               << "ConjugateGradient: k=0 residual " << cp << " target " << rsq << std::endl;
 
-    PreambleTimer.Stop();
     GridStopWatch LinalgTimer;
     GridStopWatch InnerTimer;
     GridStopWatch AxpyNormTimer;
@@ -145,13 +117,9 @@ public:
     GridStopWatch MatrixTimer;
     GridStopWatch SolverTimer;
 
-    RealD usecs = -usecond();
     SolverTimer.Start();
     int k;
     for (k = 1; k <= MaxIterations; k++) {
-
-      GridStopWatch IterationTimer;
-      IterationTimer.Start();
       c = cp;
 
       MatrixTimer.Start();
@@ -183,46 +151,34 @@ public:
       }
       LinearCombTimer.Stop();
       LinalgTimer.Stop();
-      LogIteration(k,a,b);
 
-      IterationTimer.Stop();
+      std::cout << GridLogIterative << "ConjugateGradient: Iteration " << k
-      if ( (k % 500) == 0 ) {
-	std::cout << GridLogMessage << "ConjugateGradient: Iteration " << k
                 << " residual " << sqrt(cp/ssq) << " target " << Tolerance << std::endl;
-      } else { 
-	std::cout << GridLogIterative << "ConjugateGradient: Iteration " << k
-		  << " residual " << sqrt(cp/ssq) << " target " << Tolerance << " took " << IterationTimer.Elapsed() << std::endl;
-      }
 
       // Stopping condition
       if (cp <= rsq) {
-	usecs +=usecond();
         SolverTimer.Stop();
         Linop.HermOpAndNorm(psi, mmp, d, qq);
         p = mmp - src;
-	GridBase *grid = src.Grid();
+
-	RealD DwfFlops = (1452. )*grid->gSites()*4*k
-   	               + (8+4+8+4+4)*12*grid->gSites()*k; // CG linear algebra
         RealD srcnorm = std::sqrt(norm2(src));
         RealD resnorm = std::sqrt(norm2(p));
         RealD true_residual = resnorm / srcnorm;
+
         std::cout << GridLogMessage << "ConjugateGradient Converged on iteration " << k 
 		  << "\tComputed residual " << std::sqrt(cp / ssq)
 		  << "\tTrue residual " << true_residual
 		  << "\tTarget " << Tolerance << std::endl;
 
-	//	std::cout << GridLogMessage << "\tPreamble   " << PreambleTimer.Elapsed() <<std::endl;
+        std::cout << GridLogIterative << "Time breakdown "<<std::endl;
-	std::cout << GridLogMessage << "\tSolver Elapsed    " << SolverTimer.Elapsed() <<std::endl;
+	std::cout << GridLogIterative << "\tElapsed    " << SolverTimer.Elapsed() <<std::endl;
-        std::cout << GridLogPerformance << "Time breakdown "<<std::endl;
+	std::cout << GridLogIterative << "\tMatrix     " << MatrixTimer.Elapsed() <<std::endl;
-	std::cout << GridLogPerformance << "\tMatrix     " << MatrixTimer.Elapsed() <<std::endl;
+	std::cout << GridLogIterative << "\tLinalg     " << LinalgTimer.Elapsed() <<std::endl;
-	std::cout << GridLogPerformance << "\tLinalg     " << LinalgTimer.Elapsed() <<std::endl;
+	std::cout << GridLogIterative << "\tInner      " << InnerTimer.Elapsed() <<std::endl;
-	std::cout << GridLogPerformance << "\t\tInner      " << InnerTimer.Elapsed() <<std::endl;
+	std::cout << GridLogIterative << "\tAxpyNorm   " << AxpyNormTimer.Elapsed() <<std::endl;
-	std::cout << GridLogPerformance << "\t\tAxpyNorm   " << AxpyNormTimer.Elapsed() <<std::endl;
+	std::cout << GridLogIterative << "\tLinearComb " << LinearCombTimer.Elapsed() <<std::endl;
-	std::cout << GridLogPerformance << "\t\tLinearComb " << LinearCombTimer.Elapsed() <<std::endl;
 
-	std::cout << GridLogDebug << "\tMobius flop rate " << DwfFlops/ usecs<< " Gflops " <<std::endl;
+        if (ErrorOnNoConverge) assert(true_residual / Tolerance < 10000.0);
-
-        if (ErrorOnNoConverge) GRID_ASSERT(true_residual / Tolerance < 10000.0);
 
 	IterationsToComplete = k;	
 	TrueResidual = true_residual;
@@ -231,143 +187,17 @@ public:
       }
     }
     // Failed. Calculate true residual before giving up                                                         
-    // Linop.HermOpAndNorm(psi, mmp, d, qq);
+    Linop.HermOpAndNorm(psi, mmp, d, qq);
-    //    p = mmp - src;
+    p = mmp - src;
-    //TrueResidual = sqrt(norm2(p)/ssq);
-    //    TrueResidual = 1;
 
-    std::cout << GridLogMessage << "ConjugateGradient did NOT converge "<<k<<" / "<< MaxIterations
+    TrueResidual = sqrt(norm2(p)/ssq);
-    	      <<" residual "<< std::sqrt(cp / ssq)<< std::endl;
-    SolverTimer.Stop();
-    std::cout << GridLogMessage << "\tPreamble   " << PreambleTimer.Elapsed() <<std::endl;
-    std::cout << GridLogMessage << "\tConstruct  " << ConstructTimer.Elapsed() <<std::endl;
-    std::cout << GridLogMessage << "\tNorm       " << NormTimer.Elapsed() <<std::endl;
-    std::cout << GridLogMessage << "\tAssign     " << AssignTimer.Elapsed() <<std::endl;
-    std::cout << GridLogMessage << "\tSolver     " << SolverTimer.Elapsed() <<std::endl;
-    std::cout << GridLogMessage << "Solver breakdown "<<std::endl;
-    std::cout << GridLogMessage << "\tMatrix     " << MatrixTimer.Elapsed() <<std::endl;
-    std::cout << GridLogMessage<< "\tLinalg     " << LinalgTimer.Elapsed() <<std::endl;
-    std::cout << GridLogPerformance << "\t\tInner      " << InnerTimer.Elapsed() <<std::endl;
-    std::cout << GridLogPerformance << "\t\tAxpyNorm   " << AxpyNormTimer.Elapsed() <<std::endl;
-    std::cout << GridLogPerformance << "\t\tLinearComb " << LinearCombTimer.Elapsed() <<std::endl;
 
-    if (ErrorOnNoConverge) GRID_ASSERT(0);
+    std::cout << GridLogMessage << "ConjugateGradient did NOT converge "<<k<<" / "<< MaxIterations<< std::endl;
+
+    if (ErrorOnNoConverge) assert(0);
     IterationsToComplete = k;
 
   }
 };
-
-
-template <class Field>
-class ConjugateGradientPolynomial : public ConjugateGradient<Field> {
-public:
-  // Optionally record the CG polynomial
-  std::vector<double> ak;
-  std::vector<double> bk;
-  std::vector<double> poly_p;
-  std::vector<double> poly_r;
-  std::vector<double> poly_Ap;
-  std::vector<double> polynomial;
-
-public:
-  ConjugateGradientPolynomial(RealD tol, Integer maxit, bool err_on_no_conv = true)
-    : ConjugateGradient<Field>(tol,maxit,err_on_no_conv)
-  { };
-  void PolyHermOp(LinearOperatorBase<Field> &Linop, const Field &src, Field &psi)
-  {
-    Field tmp(src.Grid());
-    Field AtoN(src.Grid());
-    AtoN = src;
-    psi=AtoN*polynomial[0];
-    for(int n=1;n<polynomial.size();n++){
-      tmp = AtoN;
-      Linop.HermOp(tmp,AtoN);
-      psi = psi + polynomial[n]*AtoN;
-    }
-  }
-  void CGsequenceHermOp(LinearOperatorBase<Field> &Linop, const Field &src, Field &x)
-  {
-    Field Ap(src.Grid());
-    Field r(src.Grid());
-    Field p(src.Grid());
-    p=src;
-    r=src;
-    x=Zero();
-    x.Checkerboard()=src.Checkerboard();
-    for(int k=0;k<ak.size();k++){
-      x = x + ak[k]*p;
-      Linop.HermOp(p,Ap);
-      r = r - ak[k] * Ap;
-      p = r + bk[k] * p;
-    }
-  }
-  void Solve(LinearOperatorBase<Field> &Linop, const Field &src, Field &psi)
-  {
-    psi=Zero();
-    this->operator ()(Linop,src,psi);
-  }
-  virtual void LogBegin(void)
-  {
-    std::cout << "ConjugageGradientPolynomial::LogBegin() "<<std::endl;
-    ak.resize(0);
-    bk.resize(0);
-    polynomial.resize(0);
-    poly_Ap.resize(0);
-    poly_Ap.resize(0);
-    poly_p.resize(1);
-    poly_r.resize(1);
-    poly_p[0]=1.0;
-    poly_r[0]=1.0;
-  };
-  virtual void LogIteration(int k,RealD a,RealD b)
-  {
-    // With zero guess,
-    // p = r = src
-    //
-    // iterate:
-    //   x =  x + a p
-    //   r =  r - a A p
-    //   p =  r + b p
-    //
-    // [0]
-    // r = x
-    // p = x
-    // Ap=0
-    //
-    // [1]
-    // Ap = A x + 0  ==> shift poly P right by 1 and add 0.
-    // x  = x + a p  ==> add polynomials term by term 
-    // r  = r - a A p  ==> add polynomials term by term
-    // p  = r + b p  ==> add polynomials term by term
-    //
-    std::cout << "ConjugageGradientPolynomial::LogIteration() "<<k<<std::endl;
-    ak.push_back(a);
-    bk.push_back(b);
-    //  Ap= right_shift(p)
-    poly_Ap.resize(k+1);
-    poly_Ap[0]=0.0;
-    for(int i=0;i<k;i++){
-      poly_Ap[i+1]=poly_p[i];
-    }
-
-    //  x = x + a p
-    polynomial.resize(k);
-    polynomial[k-1]=0.0;
-    for(int i=0;i<k;i++){
-      polynomial[i] = polynomial[i] + a * poly_p[i];
-    }
-    
-    //  r = r - a Ap
-    //  p = r + b p
-    poly_r.resize(k+1);
-    poly_p.resize(k+1);
-    poly_r[k] = poly_p[k] = 0.0;
-    for(int i=0;i<k+1;i++){
-      poly_r[i] = poly_r[i] - a * poly_Ap[i];
-      poly_p[i] = poly_r[i] + b * poly_p[i];
-    }
-  }
-};
-
 NAMESPACE_END(Grid);
 #endif

Grid/algorithms/iterative/ConjugateGradientMixedPrec.h

@@ -36,7 +36,6 @@ NAMESPACE_BEGIN(Grid);
     typename std::enable_if< getPrecision<FieldF>::value == 1, int>::type = 0> 
   class MixedPrecisionConjugateGradient : public LinearFunction<FieldD> {
   public:                                                
-    using LinearFunction<FieldD>::operator();
     RealD   Tolerance;
     RealD   InnerTolerance; //Initial tolerance for inner CG. Defaults to Tolerance but can be changed
     Integer MaxInnerIterations;
@@ -49,7 +48,6 @@ NAMESPACE_BEGIN(Grid);
     Integer TotalInnerIterations; //Number of inner CG iterations
     Integer TotalOuterIterations; //Number of restarts
     Integer TotalFinalStepIterations; //Number of CG iterations in final patch-up step
-    RealD TrueResidual;
 
     //Option to speed up *inner single precision* solves using a LinearFunction that produces a guess
     LinearFunction<FieldF> *guesser;
@@ -69,7 +67,6 @@ NAMESPACE_BEGIN(Grid);
     }
   
   void operator() (const FieldD &src_d_in, FieldD &sol_d){
-    std::cout << GridLogMessage << "MixedPrecisionConjugateGradient: Starting mixed precision CG with outer tolerance " << Tolerance << " and inner tolerance " << InnerTolerance << std::endl;
     TotalInnerIterations = 0;
 	
     GridStopWatch TotalTimer;
@@ -99,7 +96,6 @@ NAMESPACE_BEGIN(Grid);
     FieldF sol_f(SinglePrecGrid);
     sol_f.Checkerboard() = cb;
     
-    std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradient: Starting initial inner CG with tolerance " << inner_tol << std::endl;
     ConjugateGradient<FieldF> CG_f(inner_tol, MaxInnerIterations);
     CG_f.ErrorOnNoConverge = false;
 
@@ -109,24 +105,21 @@ NAMESPACE_BEGIN(Grid);
     
     Integer &outer_iter = TotalOuterIterations; //so it will be equal to the final iteration count
       
-    precisionChangeWorkspace pc_wk_sp_to_dp(DoublePrecGrid, SinglePrecGrid);
-    precisionChangeWorkspace pc_wk_dp_to_sp(SinglePrecGrid, DoublePrecGrid);
-    
     for(outer_iter = 0; outer_iter < MaxOuterIterations; outer_iter++){
       //Compute double precision rsd and also new RHS vector.
       Linop_d.HermOp(sol_d, tmp_d);
       RealD norm = axpy_norm(src_d, -1., tmp_d, src_d_in); //src_d is residual vector
-      std::cout<<GridLogMessage<<" rsd norm "<<norm<<std::endl;
+      
       std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradient: Outer iteration " <<outer_iter<<" residual "<< norm<< " target "<< stop<<std::endl;
 
       if(norm < OuterLoopNormMult * stop){
 	std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradient: Outer iteration converged on iteration " <<outer_iter <<std::endl;
 	break;
       }
-      while(norm * inner_tol * inner_tol < stop*1.01) inner_tol *= 2;  // inner_tol = sqrt(stop/norm) ??
+      while(norm * inner_tol * inner_tol < stop) inner_tol *= 2;  // inner_tol = sqrt(stop/norm) ??
 
       PrecChangeTimer.Start();
-      precisionChange(src_f, src_d, pc_wk_dp_to_sp);
+      precisionChange(src_f, src_d);
       PrecChangeTimer.Stop();
       
       sol_f = Zero();
@@ -136,7 +129,6 @@ NAMESPACE_BEGIN(Grid);
 	(*guesser)(src_f, sol_f);
 
       //Inner CG
-      std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradient: Outer iteration " << outer_iter << " starting inner CG with tolerance " << inner_tol << std::endl;
       CG_f.Tolerance = inner_tol;
       InnerCGtimer.Start();
       CG_f(Linop_f, src_f, sol_f);
@@ -145,7 +137,7 @@ NAMESPACE_BEGIN(Grid);
       
       //Convert sol back to double and add to double prec solution
       PrecChangeTimer.Start();
-      precisionChange(tmp_d, sol_f, pc_wk_sp_to_dp);
+      precisionChange(tmp_d, sol_f);
       PrecChangeTimer.Stop();
       
       axpy(sol_d, 1.0, tmp_d, sol_d);
@@ -157,7 +149,6 @@ NAMESPACE_BEGIN(Grid);
     ConjugateGradient<FieldD> CG_d(Tolerance, MaxInnerIterations);
     CG_d(Linop_d, src_d_in, sol_d);
     TotalFinalStepIterations = CG_d.IterationsToComplete;
-    TrueResidual = CG_d.TrueResidual;
 
     TotalTimer.Stop();
     std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradient: Inner CG iterations " << TotalInnerIterations << " Restarts " << TotalOuterIterations << " Final CG iterations " << TotalFinalStepIterations << std::endl;

Grid/algorithms/iterative/ConjugateGradientMixedPrecBatched.h

@@ -1,213 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/iterative/ConjugateGradientMixedPrecBatched.h
-
-    Copyright (C) 2015
-
-    Author: Raoul Hodgson <raoul.hodgson@ed.ac.uk>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#ifndef GRID_CONJUGATE_GRADIENT_MIXED_PREC_BATCHED_H
-#define GRID_CONJUGATE_GRADIENT_MIXED_PREC_BATCHED_H
-
-NAMESPACE_BEGIN(Grid);
-
-//Mixed precision restarted defect correction CG
-template<class FieldD,class FieldF, 
-  typename std::enable_if< getPrecision<FieldD>::value == 2, int>::type = 0,
-  typename std::enable_if< getPrecision<FieldF>::value == 1, int>::type = 0> 
-class MixedPrecisionConjugateGradientBatched : public LinearFunction<FieldD> {
-public:
-  using LinearFunction<FieldD>::operator();
-  RealD   Tolerance;
-  RealD   InnerTolerance; //Initial tolerance for inner CG. Defaults to Tolerance but can be changed
-  Integer MaxInnerIterations;
-  Integer MaxOuterIterations;
-  Integer MaxPatchupIterations;
-  GridBase* SinglePrecGrid; //Grid for single-precision fields
-  RealD OuterLoopNormMult; //Stop the outer loop and move to a final double prec solve when the residual is OuterLoopNormMult * Tolerance
-  LinearOperatorBase<FieldF> &Linop_f;
-  LinearOperatorBase<FieldD> &Linop_d;
-
-  //Option to speed up *inner single precision* solves using a LinearFunction that produces a guess
-  LinearFunction<FieldF> *guesser;
-  bool updateResidual;
-  
-  MixedPrecisionConjugateGradientBatched(RealD tol, 
-          Integer maxinnerit, 
-          Integer maxouterit, 
-          Integer maxpatchit,
-          GridBase* _sp_grid, 
-          LinearOperatorBase<FieldF> &_Linop_f, 
-          LinearOperatorBase<FieldD> &_Linop_d,
-          bool _updateResidual=true) :
-    Linop_f(_Linop_f), Linop_d(_Linop_d),
-    Tolerance(tol), InnerTolerance(tol), MaxInnerIterations(maxinnerit), MaxOuterIterations(maxouterit), MaxPatchupIterations(maxpatchit), SinglePrecGrid(_sp_grid),
-    OuterLoopNormMult(100.), guesser(NULL), updateResidual(_updateResidual) { };
-
-  void useGuesser(LinearFunction<FieldF> &g){
-    guesser = &g;
-  }
-  
-  void operator() (const FieldD &src_d_in, FieldD &sol_d){
-    std::vector<FieldD> srcs_d_in{src_d_in};
-    std::vector<FieldD> sols_d{sol_d};
-
-    (*this)(srcs_d_in,sols_d);
-
-    sol_d = sols_d[0];
-  }
-
-  void operator() (const std::vector<FieldD> &src_d_in, std::vector<FieldD> &sol_d){
-    GRID_ASSERT(src_d_in.size() == sol_d.size());
-    int NBatch = src_d_in.size();
-
-    std::cout << GridLogMessage << "NBatch = " << NBatch << std::endl;
-
-    Integer TotalOuterIterations = 0; //Number of restarts
-    std::vector<Integer> TotalInnerIterations(NBatch,0);     //Number of inner CG iterations
-    std::vector<Integer> TotalFinalStepIterations(NBatch,0); //Number of CG iterations in final patch-up step
-  
-    GridStopWatch TotalTimer;
-    TotalTimer.Start();
-
-    GridStopWatch InnerCGtimer;
-    GridStopWatch PrecChangeTimer;
-    
-    int cb = src_d_in[0].Checkerboard();
-    
-    std::vector<RealD> src_norm;
-    std::vector<RealD> norm;
-    std::vector<RealD> stop;
-    
-    GridBase* DoublePrecGrid = src_d_in[0].Grid();
-    FieldD tmp_d(DoublePrecGrid);
-    tmp_d.Checkerboard() = cb;
-    
-    FieldD tmp2_d(DoublePrecGrid);
-    tmp2_d.Checkerboard() = cb;
-
-    std::vector<FieldD> src_d;
-    std::vector<FieldF> src_f;
-    std::vector<FieldF> sol_f;
-
-    for (int i=0; i<NBatch; i++) {
-      sol_d[i].Checkerboard() = cb;
-
-      src_norm.push_back(norm2(src_d_in[i]));
-      norm.push_back(0.);
-      stop.push_back(src_norm[i] * Tolerance*Tolerance);
-
-      src_d.push_back(src_d_in[i]); //source for next inner iteration, computed from residual during operation
-
-      src_f.push_back(SinglePrecGrid);
-      src_f[i].Checkerboard() = cb;
-
-      sol_f.push_back(SinglePrecGrid);
-      sol_f[i].Checkerboard() = cb;
-    }
-    
-    RealD inner_tol = InnerTolerance;
-    
-    ConjugateGradient<FieldF> CG_f(inner_tol, MaxInnerIterations);
-    CG_f.ErrorOnNoConverge = false;
-    
-    Integer &outer_iter = TotalOuterIterations; //so it will be equal to the final iteration count
-      
-    for(outer_iter = 0; outer_iter < MaxOuterIterations; outer_iter++){
-      std::cout << GridLogMessage << std::endl;
-      std::cout << GridLogMessage << "Outer iteration " << outer_iter << std::endl;
-      
-      bool allConverged = true;
-      
-      for (int i=0; i<NBatch; i++) {
-        //Compute double precision rsd and also new RHS vector.
-        Linop_d.HermOp(sol_d[i], tmp_d);
-        norm[i] = axpy_norm(src_d[i], -1., tmp_d, src_d_in[i]); //src_d is residual vector
-        
-        std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradientBatched: Outer iteration " << outer_iter <<" solve " << i << " residual "<< norm[i] << " target "<< stop[i] <<std::endl;
-
-        PrecChangeTimer.Start();
-        precisionChange(src_f[i], src_d[i]);
-        PrecChangeTimer.Stop();
-        
-        sol_f[i] = Zero();
-      
-        if(norm[i] > OuterLoopNormMult * stop[i]) {
-          allConverged = false;
-        }
-      }
-      if (allConverged) break;
-
-      if (updateResidual) {
-        RealD normMax = *std::max_element(std::begin(norm), std::end(norm));
-        RealD stopMax = *std::max_element(std::begin(stop), std::end(stop));
-        while( normMax * inner_tol * inner_tol < stopMax) inner_tol *= 2;  // inner_tol = sqrt(stop/norm) ??
-        CG_f.Tolerance = inner_tol;
-      }
-
-      //Optionally improve inner solver guess (eg using known eigenvectors)
-      if(guesser != NULL) {
-        (*guesser)(src_f, sol_f);
-      }
-
-      for (int i=0; i<NBatch; i++) {
-        //Inner CG
-        InnerCGtimer.Start();
-        CG_f(Linop_f, src_f[i], sol_f[i]);
-        InnerCGtimer.Stop();
-        TotalInnerIterations[i] += CG_f.IterationsToComplete;
-        
-        //Convert sol back to double and add to double prec solution
-        PrecChangeTimer.Start();
-        precisionChange(tmp_d, sol_f[i]);
-        PrecChangeTimer.Stop();
-        
-        axpy(sol_d[i], 1.0, tmp_d, sol_d[i]);
-      }
-
-    }
-    
-    //Final trial CG
-    std::cout << GridLogMessage << std::endl;
-    std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradientBatched: Starting final patch-up double-precision solve"<<std::endl;
-    
-    for (int i=0; i<NBatch; i++) {
-      ConjugateGradient<FieldD> CG_d(Tolerance, MaxPatchupIterations);
-      CG_d(Linop_d, src_d_in[i], sol_d[i]);
-      TotalFinalStepIterations[i] += CG_d.IterationsToComplete;
-    }
-
-    TotalTimer.Stop();
-
-    std::cout << GridLogMessage << std::endl;
-    for (int i=0; i<NBatch; i++) {
-      std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradientBatched: solve " << i << " Inner CG iterations " << TotalInnerIterations[i] << " Restarts " << TotalOuterIterations << " Final CG iterations " << TotalFinalStepIterations[i] << std::endl;
-    }
-    std::cout << GridLogMessage << std::endl;
-    std::cout<<GridLogMessage<<"MixedPrecisionConjugateGradientBatched: Total time " << TotalTimer.Elapsed() << " Precision change " << PrecChangeTimer.Elapsed() << " Inner CG total " << InnerCGtimer.Elapsed() << std::endl;
-    
-  }
-};
-
-NAMESPACE_END(Grid);
-
-#endif

Grid/algorithms/iterative/ConjugateGradientMultiShift.h

@@ -44,7 +44,7 @@ public:
 
   using OperatorFunction<Field>::operator();
 
-  //  RealD   Tolerance;
+  RealD   Tolerance;
   Integer MaxIterations;
   Integer IterationsToComplete; //Number of iterations the CG took to finish. Filled in upon completion
   std::vector<int> IterationsToCompleteShift;  // Iterations for this shift
@@ -52,7 +52,7 @@ public:
   MultiShiftFunction shifts;
   std::vector<RealD> TrueResidualShift;
 
-  ConjugateGradientMultiShift(Integer maxit, const MultiShiftFunction &_shifts) : 
+  ConjugateGradientMultiShift(Integer maxit,MultiShiftFunction &_shifts) : 
     MaxIterations(maxit),
     shifts(_shifts)
   { 
@@ -84,7 +84,6 @@ public:
 
   void operator() (LinearOperatorBase<Field> &Linop, const Field &src, std::vector<Field> &psi)
   {
-    GRID_TRACE("ConjugateGradientMultiShift");
   
     GridBase *grid = src.Grid();
   
@@ -98,15 +97,15 @@ public:
     std::vector<RealD> alpha(nshift,1.0);
     std::vector<Field>   ps(nshift,grid);// Search directions
 
-    GRID_ASSERT(psi.size()==nshift);
+    assert(psi.size()==nshift);
-    GRID_ASSERT(mass.size()==nshift);
+    assert(mass.size()==nshift);
-    GRID_ASSERT(mresidual.size()==nshift);
+    assert(mresidual.size()==nshift);
   
-    // remove dynamic sized arrays on stack; 2d is a pain with vector
+    // dynamic sized arrays on stack; 2d is a pain with vector
-    std::vector<RealD>  bs(nshift);
+    RealD  bs[nshift];
-    std::vector<RealD>  rsq(nshift);
+    RealD  rsq[nshift];
-    std::vector<std::array<RealD,2> >  z(nshift);
+    RealD  z[nshift][2];
-    std::vector<int>     converged(nshift);
+    int     converged[nshift];
   
     const int       primary =0;
   
@@ -122,7 +121,7 @@ public:
   
     // Check lightest mass
     for(int s=0;s<nshift;s++){
-      GRID_ASSERT( mass[s]>= mass[primary] );
+      assert( mass[s]>= mass[primary] );
       converged[s]=0;
     }
   
@@ -144,7 +143,7 @@ public:
     for(int s=0;s<nshift;s++){
       rsq[s] = cp * mresidual[s] * mresidual[s];
       std::cout<<GridLogMessage<<"ConjugateGradientMultiShift: shift "<<s
-	       <<" target resid^2 "<<rsq[s]<<std::endl;
+	       <<" target resid "<<rsq[s]<<std::endl;
       ps[s] = src;
     }
     // r and p for primary
@@ -184,9 +183,6 @@ public:
       axpby(psi[s],0.,-bs[s]*alpha[s],src,src);
     }
   
-    std::cout << GridLogIterative << "ConjugateGradientMultiShift: initial rn (|src|^2) =" << rn << " qq (|MdagM src|^2) =" << qq << " d ( dot(src, [MdagM + m_0]src) ) =" << d << " c=" << c << std::endl;
-    
-  
   ///////////////////////////////////////
   // Timers
   ///////////////////////////////////////
@@ -325,8 +321,8 @@ public:
 
       std::cout << GridLogMessage << "Time Breakdown "<<std::endl;
       std::cout << GridLogMessage << "\tElapsed    " << SolverTimer.Elapsed()     <<std::endl;
-      std::cout << GridLogMessage << "\tAXPY     " << AXPYTimer.Elapsed()     <<std::endl;
+      std::cout << GridLogMessage << "\tAXPY    " << AXPYTimer.Elapsed()     <<std::endl;
-      std::cout << GridLogMessage << "\tMatrix   " << MatrixTimer.Elapsed()     <<std::endl;
+      std::cout << GridLogMessage << "\tMarix    " << MatrixTimer.Elapsed()     <<std::endl;
       std::cout << GridLogMessage << "\tShift    " << ShiftTimer.Elapsed()     <<std::endl;
 
       IterationsToComplete = k;	
@@ -338,7 +334,7 @@ public:
     }
     // ugly hack
     std::cout<<GridLogMessage<<"CG multi shift did not converge"<<std::endl;
-    //  GRID_ASSERT(0);
+    //  assert(0);
   }
 
 };

Grid/algorithms/iterative/ConjugateGradientMultiShiftCleanup.h

@@ -1,373 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/iterative/ConjugateGradientMultiShift.h
-
-    Copyright (C) 2015
-
-Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
-Author: Peter Boyle <paboyle@ph.ed.ac.uk>
-Author: Christopher Kelly <ckelly@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-NAMESPACE_BEGIN(Grid);
-
-//CK 2020: A variant of the multi-shift conjugate gradient with the matrix multiplication in single precision. 
-//The residual is stored in single precision, but the search directions and solution are stored in double precision. 
-//Every update_freq iterations the residual is corrected in double precision. 
-//For safety the a final regular CG is applied to clean up if necessary
-
-//PB Pure single, then double fixup
-
-template<class FieldD, class FieldF,
-	 typename std::enable_if< getPrecision<FieldD>::value == 2, int>::type = 0,
-	 typename std::enable_if< getPrecision<FieldF>::value == 1, int>::type = 0> 
-class ConjugateGradientMultiShiftMixedPrecCleanup : public OperatorMultiFunction<FieldD>,
-					     public OperatorFunction<FieldD>
-{
-public:                                                
-
-  using OperatorFunction<FieldD>::operator();
-
-  RealD   Tolerance;
-  Integer MaxIterationsMshift;
-  Integer MaxIterations;
-  Integer IterationsToComplete; //Number of iterations the CG took to finish. Filled in upon completion
-  std::vector<int> IterationsToCompleteShift;  // Iterations for this shift
-  int verbose;
-  MultiShiftFunction shifts;
-  std::vector<RealD> TrueResidualShift;
-
-  int ReliableUpdateFreq; //number of iterations between reliable updates
-
-  GridBase* SinglePrecGrid; //Grid for single-precision fields
-  LinearOperatorBase<FieldF> &Linop_f; //single precision
-
-  ConjugateGradientMultiShiftMixedPrecCleanup(Integer maxit, const MultiShiftFunction &_shifts,
-				       GridBase* _SinglePrecGrid, LinearOperatorBase<FieldF> &_Linop_f,
-				       int _ReliableUpdateFreq) : 
-    MaxIterationsMshift(maxit),  shifts(_shifts), SinglePrecGrid(_SinglePrecGrid), Linop_f(_Linop_f), ReliableUpdateFreq(_ReliableUpdateFreq),
-    MaxIterations(20000)
-  { 
-    verbose=1;
-    IterationsToCompleteShift.resize(_shifts.order);
-    TrueResidualShift.resize(_shifts.order);
-  }
-
-  void operator() (LinearOperatorBase<FieldD> &Linop, const FieldD &src, FieldD &psi)
-  {
-    GridBase *grid = src.Grid();
-    int nshift = shifts.order;
-    std::vector<FieldD> results(nshift,grid);
-    (*this)(Linop,src,results,psi);
-  }
-  void operator() (LinearOperatorBase<FieldD> &Linop, const FieldD &src, std::vector<FieldD> &results, FieldD &psi)
-  {
-    int nshift = shifts.order;
-
-    (*this)(Linop,src,results);
-  
-    psi = shifts.norm*src;
-    for(int i=0;i<nshift;i++){
-      psi = psi + shifts.residues[i]*results[i];
-    }
-
-    return;
-  }
-
-  void operator() (LinearOperatorBase<FieldD> &Linop_d, const FieldD &src_d, std::vector<FieldD> &psi_d)
-  { 
-    GRID_TRACE("ConjugateGradientMultiShiftMixedPrecCleanup");
-    GridBase *DoublePrecGrid = src_d.Grid();
-
-    ////////////////////////////////////////////////////////////////////////
-    // Convenience references to the info stored in "MultiShiftFunction"
-    ////////////////////////////////////////////////////////////////////////
-    int nshift = shifts.order;
-
-    std::vector<RealD> &mass(shifts.poles); // Make references to array in "shifts"
-    std::vector<RealD> &mresidual(shifts.tolerances);
-    std::vector<RealD> alpha(nshift,1.0);
-
-    //Double precision search directions
-    FieldD p_d(DoublePrecGrid);
-    std::vector<FieldF> ps_f (nshift, SinglePrecGrid);// Search directions (single precision)
-    std::vector<FieldF> psi_f(nshift, SinglePrecGrid);// solutions (single precision)
-
-    FieldD tmp_d(DoublePrecGrid);
-    FieldD r_d(DoublePrecGrid);
-    FieldF r_f(SinglePrecGrid);
-    FieldD mmp_d(DoublePrecGrid);
-
-    GRID_ASSERT(psi_d.size()==nshift);
-    GRID_ASSERT(mass.size()==nshift);
-    GRID_ASSERT(mresidual.size()==nshift);
-  
-    // dynamic sized arrays on stack; 2d is a pain with vector
-    std::vector<RealD>  bs(nshift);
-    std::vector<RealD>  rsq(nshift);
-    std::vector<RealD>  rsqf(nshift);
-    std::vector<std::array<RealD,2> >  z(nshift);
-    std::vector<int>     converged(nshift);
-  
-    const int       primary =0;
-  
-    //Primary shift fields CG iteration
-    RealD a,b,c,d;
-    RealD cp,bp,qq; //prev
-  
-    // Matrix mult fields
-    FieldF p_f(SinglePrecGrid);
-    FieldF mmp_f(SinglePrecGrid);
-
-    // Check lightest mass
-    for(int s=0;s<nshift;s++){
-      GRID_ASSERT( mass[s]>= mass[primary] );
-      converged[s]=0;
-    }
-  
-    // Wire guess to zero
-    // Residuals "r" are src
-    // First search direction "p" is also src
-    cp = norm2(src_d);
-
-    // Handle trivial case of zero src.
-    if( cp == 0. ){
-      for(int s=0;s<nshift;s++){
-	psi_d[s] = Zero();
-	psi_f[s] = Zero();
-	IterationsToCompleteShift[s] = 1;
-	TrueResidualShift[s] = 0.;
-      }
-      return;
-    }
-
-    for(int s=0;s<nshift;s++){
-      rsq[s] = cp * mresidual[s] * mresidual[s];
-      rsqf[s] =rsq[s];
-      std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrecCleanup: shift "<< s <<" target resid "<<rsq[s]<<std::endl;
-      //      ps_d[s] = src_d;
-      precisionChange(ps_f[s],src_d);
-    }
-    // r and p for primary
-    p_d = src_d; //primary copy --- make this a reference to ps_d to save axpys
-    r_d = p_d;
-    
-    //MdagM+m[0]
-    precisionChange(p_f,p_d);
-    Linop_f.HermOpAndNorm(p_f,mmp_f,d,qq); // mmp = MdagM p        d=real(dot(p, mmp)),  qq=norm2(mmp)
-    precisionChange(tmp_d,mmp_f);
-    Linop_d.HermOpAndNorm(p_d,mmp_d,d,qq); // mmp = MdagM p        d=real(dot(p, mmp)),  qq=norm2(mmp)
-    tmp_d = tmp_d - mmp_d;
-    std::cout << " Testing operators match "<<norm2(mmp_d)<<" f "<<norm2(mmp_f)<<" diff "<< norm2(tmp_d)<<std::endl;
-    //    GRID_ASSERT(norm2(tmp_d)< 1.0e-4);
-
-    axpy(mmp_d,mass[0],p_d,mmp_d);
-    RealD rn = norm2(p_d);
-    d += rn*mass[0];
-
-    b = -cp /d;
-  
-    // Set up the various shift variables
-    int       iz=0;
-    z[0][1-iz] = 1.0;
-    z[0][iz]   = 1.0;
-    bs[0]      = b;
-    for(int s=1;s<nshift;s++){
-      z[s][1-iz] = 1.0;
-      z[s][iz]   = 1.0/( 1.0 - b*(mass[s]-mass[0]));
-      bs[s]      = b*z[s][iz]; 
-    }
-  
-    // r += b[0] A.p[0]
-    // c= norm(r)
-    c=axpy_norm(r_d,b,mmp_d,r_d);
-  
-    for(int s=0;s<nshift;s++) {
-      axpby(psi_d[s],0.,-bs[s]*alpha[s],src_d,src_d);
-      precisionChange(psi_f[s],psi_d[s]);
-    }
-  
-    ///////////////////////////////////////
-    // Timers
-    ///////////////////////////////////////
-    GridStopWatch AXPYTimer, ShiftTimer, QRTimer, MatrixTimer, SolverTimer, PrecChangeTimer, CleanupTimer;
-
-    SolverTimer.Start();
-  
-    // Iteration loop
-    int k;
-  
-    for (k=1;k<=MaxIterationsMshift;k++){    
-
-      a = c /cp;
-      AXPYTimer.Start();
-      axpy(p_d,a,p_d,r_d); 
-      AXPYTimer.Stop();
-
-      PrecChangeTimer.Start();
-      precisionChange(r_f, r_d);
-      PrecChangeTimer.Stop();
-
-      AXPYTimer.Start();
-      for(int s=0;s<nshift;s++){
-	if ( ! converged[s] ) { 
-	  if (s==0){
-	    axpy(ps_f[s],a,ps_f[s],r_f);
-	  } else{
-	    RealD as =a *z[s][iz]*bs[s] /(z[s][1-iz]*b);
-	    axpby(ps_f[s],z[s][iz],as,r_f,ps_f[s]);
-	  }
-	}
-      }
-      AXPYTimer.Stop();
-
-      cp=c;
-      PrecChangeTimer.Start();
-      precisionChange(p_f, p_d); //get back single prec search direction for linop
-      PrecChangeTimer.Stop();
-      MatrixTimer.Start();  
-      Linop_f.HermOp(p_f,mmp_f);
-      MatrixTimer.Stop();  
-      PrecChangeTimer.Start();
-      precisionChange(mmp_d, mmp_f); // From Float to Double
-      PrecChangeTimer.Stop();
-
-      d=real(innerProduct(p_d,mmp_d));    
-      axpy(mmp_d,mass[0],p_d,mmp_d);
-      RealD rn = norm2(p_d);
-      d += rn*mass[0];
-    
-      bp=b;
-      b=-cp/d;
-
-      // Toggle the recurrence history
-      bs[0] = b;
-      iz = 1-iz;
-      ShiftTimer.Start();
-      for(int s=1;s<nshift;s++){
-	if((!converged[s])){
-	  RealD z0 = z[s][1-iz];
-	  RealD z1 = z[s][iz];
-	  z[s][iz] = z0*z1*bp
-	    / (b*a*(z1-z0) + z1*bp*(1- (mass[s]-mass[0])*b)); 
-	  bs[s] = b*z[s][iz]/z0; // NB sign  rel to Mike
-	}
-      }
-      ShiftTimer.Stop();
-
-      //Update single precision solutions
-      AXPYTimer.Start();
-      for(int s=0;s<nshift;s++){
-	int ss = s;
-	if( (!converged[s]) ) { 
-	  axpy(psi_f[ss],-bs[s]*alpha[s],ps_f[s],psi_f[ss]);
-	}
-      }
-      c = axpy_norm(r_d,b,mmp_d,r_d);
-      AXPYTimer.Stop();
-    
-      // Convergence checks
-      int all_converged = 1;
-      for(int s=0;s<nshift;s++){
-      
-	if ( (!converged[s]) ){
-	  IterationsToCompleteShift[s] = k;
-	
-	  RealD css  = c * z[s][iz]* z[s][iz];
-	
-	  if(css<rsqf[s]){
-	    if ( ! converged[s] )
-	      std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrecCleanup k="<<k<<" Shift "<<s<<" has converged"<<std::endl;
-	    converged[s]=1;
-	  } else {
-	    all_converged=0;
-	  }
-
-	}
-      }
-
-      if ( all_converged || k == MaxIterationsMshift-1){
-
-	SolverTimer.Stop();
-
-	for(int s=0;s<nshift;s++){
-	  precisionChange(psi_d[s],psi_f[s]);
-	}
-
-	
-	if ( all_converged ){
-	  std::cout<<GridLogMessage<< "ConjugateGradientMultiShiftMixedPrecCleanup: All shifts have converged iteration "<<k<<std::endl;
-	  std::cout<<GridLogMessage<< "ConjugateGradientMultiShiftMixedPrecCleanup: Checking solutions"<<std::endl;
-	} else {
-	  std::cout<<GridLogMessage<< "ConjugateGradientMultiShiftMixedPrecCleanup: Not all shifts have converged iteration "<<k<<std::endl;
-	}
-	
-	// Check answers 
-	for(int s=0; s < nshift; s++) { 
-	  Linop_d.HermOpAndNorm(psi_d[s],mmp_d,d,qq);
-	  axpy(tmp_d,mass[s],psi_d[s],mmp_d);
-	  axpy(r_d,-alpha[s],src_d,tmp_d);
-	  RealD rn = norm2(r_d);
-	  RealD cn = norm2(src_d);
-	  TrueResidualShift[s] = std::sqrt(rn/cn);
-	  std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrecCleanup: shift["<<s<<"] true residual "<< TrueResidualShift[s] << " target " << mresidual[s] << std::endl;
-
-	  //If we have not reached the desired tolerance, do a (mixed precision) CG cleanup
-	  if(rn >= rsq[s]){
-	    CleanupTimer.Start();
-	    std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrecCleanup: performing cleanup step for shift " << s << std::endl;
-
-	    //Setup linear operators for final cleanup
-	    ConjugateGradientMultiShiftMixedPrecSupport::ShiftedLinop<FieldD> Linop_shift_d(Linop_d, mass[s]);
-	    ConjugateGradientMultiShiftMixedPrecSupport::ShiftedLinop<FieldF> Linop_shift_f(Linop_f, mass[s]);
-					       
-	    MixedPrecisionConjugateGradient<FieldD,FieldF> cg(mresidual[s], MaxIterations, MaxIterations, SinglePrecGrid, Linop_shift_f, Linop_shift_d); 
-	    cg(src_d, psi_d[s]);
-	    
-	    TrueResidualShift[s] = cg.TrueResidual;
-	    CleanupTimer.Stop();
-	  }
-	}
-
-	std::cout << GridLogMessage << "ConjugateGradientMultiShiftMixedPrecCleanup: Time Breakdown for body"<<std::endl;
-	std::cout << GridLogMessage << "\tSolver    " << SolverTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\t\tAXPY    " << AXPYTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\t\tMatrix    " << MatrixTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\t\tShift    " << ShiftTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\t\tPrecision Change " << PrecChangeTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\tFinal Cleanup " << CleanupTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\tSolver+Cleanup " << SolverTimer.Elapsed() + CleanupTimer.Elapsed() << std::endl;
-
-	IterationsToComplete = k;	
-
-	return;
-      }
-   
-    }
-    std::cout<<GridLogMessage<<"CG multi shift did not converge"<<std::endl;
-    GRID_ASSERT(0);
-  }
-
-};
-NAMESPACE_END(Grid);
-

Grid/algorithms/iterative/ConjugateGradientMultiShiftMixedPrec.h

@@ -1,416 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/iterative/ConjugateGradientMultiShift.h
-
-    Copyright (C) 2015
-
-Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
-Author: Peter Boyle <paboyle@ph.ed.ac.uk>
-Author: Christopher Kelly <ckelly@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#ifndef GRID_CONJUGATE_GRADIENT_MULTI_SHIFT_MIXEDPREC_H
-#define GRID_CONJUGATE_GRADIENT_MULTI_SHIFT_MIXEDPREC_H
-
-NAMESPACE_BEGIN(Grid);
-
-//CK 2020: A variant of the multi-shift conjugate gradient with the matrix multiplication in single precision. 
-//The residual is stored in single precision, but the search directions and solution are stored in double precision. 
-//Every update_freq iterations the residual is corrected in double precision. 
-    
-//For safety the a final regular CG is applied to clean up if necessary
-
-//Linop to add shift to input linop, used in cleanup CG
-namespace ConjugateGradientMultiShiftMixedPrecSupport{
-template<typename Field>
-class ShiftedLinop: public LinearOperatorBase<Field>{
-public:
-  LinearOperatorBase<Field> &linop_base;
-  RealD shift;
-
-  ShiftedLinop(LinearOperatorBase<Field> &_linop_base, RealD _shift): linop_base(_linop_base), shift(_shift){}
-
-  void OpDiag (const Field &in, Field &out){ GRID_ASSERT(0); }
-  void OpDir  (const Field &in, Field &out,int dir,int disp){ GRID_ASSERT(0); }
-  void OpDirAll  (const Field &in, std::vector<Field> &out){ GRID_ASSERT(0); }
-  
-  void Op     (const Field &in, Field &out){ GRID_ASSERT(0); }
-  void AdjOp  (const Field &in, Field &out){ GRID_ASSERT(0); }
-
-  void HermOp(const Field &in, Field &out){
-    linop_base.HermOp(in, out);
-    axpy(out, shift, in, out);
-  }    
-
-  void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
-    HermOp(in,out);
-    ComplexD dot = innerProduct(in,out);
-    n1=real(dot);
-    n2=norm2(out);
-  }
-};
-};
-
-
-template<class FieldD, class FieldF,
-	 typename std::enable_if< getPrecision<FieldD>::value == 2, int>::type = 0,
-	 typename std::enable_if< getPrecision<FieldF>::value == 1, int>::type = 0> 
-class ConjugateGradientMultiShiftMixedPrec : public OperatorMultiFunction<FieldD>,
-					     public OperatorFunction<FieldD>
-{
-public:                                                
-
-  using OperatorFunction<FieldD>::operator();
-
-  RealD   Tolerance;
-  Integer MaxIterationsMshift;
-  Integer MaxIterations;
-  Integer IterationsToComplete; //Number of iterations the CG took to finish. Filled in upon completion
-  std::vector<int> IterationsToCompleteShift;  // Iterations for this shift
-  int verbose;
-  MultiShiftFunction shifts;
-  std::vector<RealD> TrueResidualShift;
-
-  int ReliableUpdateFreq; //number of iterations between reliable updates
-
-  GridBase* SinglePrecGrid; //Grid for single-precision fields
-  LinearOperatorBase<FieldF> &Linop_f; //single precision
-
-  ConjugateGradientMultiShiftMixedPrec(Integer maxit, const MultiShiftFunction &_shifts,
-				       GridBase* _SinglePrecGrid, LinearOperatorBase<FieldF> &_Linop_f,
-				       int _ReliableUpdateFreq) : 
-    MaxIterationsMshift(maxit),  shifts(_shifts), SinglePrecGrid(_SinglePrecGrid), Linop_f(_Linop_f), ReliableUpdateFreq(_ReliableUpdateFreq),
-    MaxIterations(20000)
-  { 
-    verbose=1;
-    IterationsToCompleteShift.resize(_shifts.order);
-    TrueResidualShift.resize(_shifts.order);
-  }
-
-  void operator() (LinearOperatorBase<FieldD> &Linop, const FieldD &src, FieldD &psi)
-  {
-    GridBase *grid = src.Grid();
-    int nshift = shifts.order;
-    std::vector<FieldD> results(nshift,grid);
-    (*this)(Linop,src,results,psi);
-  }
-  void operator() (LinearOperatorBase<FieldD> &Linop, const FieldD &src, std::vector<FieldD> &results, FieldD &psi)
-  {
-    int nshift = shifts.order;
-
-    (*this)(Linop,src,results);
-  
-    psi = shifts.norm*src;
-    for(int i=0;i<nshift;i++){
-      psi = psi + shifts.residues[i]*results[i];
-    }
-
-    return;
-  }
-
-  void operator() (LinearOperatorBase<FieldD> &Linop_d, const FieldD &src_d, std::vector<FieldD> &psi_d)
-  { 
-    GRID_TRACE("ConjugateGradientMultiShiftMixedPrec");
-    GridBase *DoublePrecGrid = src_d.Grid();
-
-    precisionChangeWorkspace pc_wk_s_to_d(DoublePrecGrid,SinglePrecGrid);
-    precisionChangeWorkspace pc_wk_d_to_s(SinglePrecGrid,DoublePrecGrid);
-    
-    ////////////////////////////////////////////////////////////////////////
-    // Convenience references to the info stored in "MultiShiftFunction"
-    ////////////////////////////////////////////////////////////////////////
-    int nshift = shifts.order;
-
-    std::vector<RealD> &mass(shifts.poles); // Make references to array in "shifts"
-    std::vector<RealD> &mresidual(shifts.tolerances);
-    std::vector<RealD> alpha(nshift,1.0);
-
-    //Double precision search directions
-    FieldD p_d(DoublePrecGrid);
-    std::vector<FieldD> ps_d(nshift, DoublePrecGrid);// Search directions (double precision)
-
-    FieldD tmp_d(DoublePrecGrid);
-    FieldD r_d(DoublePrecGrid);
-    FieldD mmp_d(DoublePrecGrid);
-
-    GRID_ASSERT(psi_d.size()==nshift);
-    GRID_ASSERT(mass.size()==nshift);
-    GRID_ASSERT(mresidual.size()==nshift);
-  
-    // dynamic sized arrays on stack; 2d is a pain with vector
-    std::vector<RealD>  bs(nshift);
-    std::vector<RealD>  rsq(nshift);
-    std::vector<RealD>  rsqf(nshift);
-    std::vector<std::array<RealD,2> >  z(nshift);
-    std::vector<int>     converged(nshift);
-  
-    const int       primary =0;
-  
-    //Primary shift fields CG iteration
-    RealD a,b,c,d;
-    RealD cp,bp,qq; //prev
-  
-    // Matrix mult fields
-    FieldF p_f(SinglePrecGrid);
-    FieldF mmp_f(SinglePrecGrid);
-
-    // Check lightest mass
-    for(int s=0;s<nshift;s++){
-      GRID_ASSERT( mass[s]>= mass[primary] );
-      converged[s]=0;
-    }
-  
-    // Wire guess to zero
-    // Residuals "r" are src
-    // First search direction "p" is also src
-    cp = norm2(src_d);
-
-    // Handle trivial case of zero src.
-    if( cp == 0. ){
-      for(int s=0;s<nshift;s++){
-	psi_d[s] = Zero();
-	IterationsToCompleteShift[s] = 1;
-	TrueResidualShift[s] = 0.;
-      }
-      return;
-    }
-
-    for(int s=0;s<nshift;s++){
-      rsq[s] = cp * mresidual[s] * mresidual[s];
-      rsqf[s] =rsq[s];
-      std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrec: shift "<< s <<" target resid "<<rsq[s]<<std::endl;
-      ps_d[s] = src_d;
-    }
-    // r and p for primary
-    p_d = src_d; //primary copy --- make this a reference to ps_d to save axpys
-    r_d = p_d;
-    
-    //MdagM+m[0]
-    precisionChange(p_f, p_d, pc_wk_d_to_s);
-
-    Linop_f.HermOpAndNorm(p_f,mmp_f,d,qq); // mmp = MdagM p        d=real(dot(p, mmp)),  qq=norm2(mmp)
-    precisionChange(tmp_d, mmp_f, pc_wk_s_to_d);
-    Linop_d.HermOpAndNorm(p_d,mmp_d,d,qq); // mmp = MdagM p        d=real(dot(p, mmp)),  qq=norm2(mmp)
-    tmp_d = tmp_d - mmp_d;
-    std::cout << " Testing operators match "<<norm2(mmp_d)<<" f "<<norm2(mmp_f)<<" diff "<< norm2(tmp_d)<<std::endl;
-    GRID_ASSERT(norm2(tmp_d)< 1.0);
-
-    axpy(mmp_d,mass[0],p_d,mmp_d);
-    RealD rn = norm2(p_d);
-    d += rn*mass[0];
-
-    b = -cp /d;
-  
-    // Set up the various shift variables
-    int       iz=0;
-    z[0][1-iz] = 1.0;
-    z[0][iz]   = 1.0;
-    bs[0]      = b;
-    for(int s=1;s<nshift;s++){
-      z[s][1-iz] = 1.0;
-      z[s][iz]   = 1.0/( 1.0 - b*(mass[s]-mass[0]));
-      bs[s]      = b*z[s][iz]; 
-    }
-  
-    // r += b[0] A.p[0]
-    // c= norm(r)
-    c=axpy_norm(r_d,b,mmp_d,r_d);
-  
-    for(int s=0;s<nshift;s++) {
-      axpby(psi_d[s],0.,-bs[s]*alpha[s],src_d,src_d);
-    }
-  
-    ///////////////////////////////////////
-    // Timers
-    ///////////////////////////////////////
-    GridStopWatch AXPYTimer, ShiftTimer, QRTimer, MatrixTimer, SolverTimer, PrecChangeTimer, CleanupTimer;
-
-    SolverTimer.Start();
-  
-    // Iteration loop
-    int k;
-  
-    for (k=1;k<=MaxIterationsMshift;k++){    
-
-      a = c /cp;
-      AXPYTimer.Start();
-      axpy(p_d,a,p_d,r_d); 
-
-      for(int s=0;s<nshift;s++){
-	if ( ! converged[s] ) { 
-	  if (s==0){
-	    axpy(ps_d[s],a,ps_d[s],r_d);
-	  } else{
-	    RealD as =a *z[s][iz]*bs[s] /(z[s][1-iz]*b);
-	    axpby(ps_d[s],z[s][iz],as,r_d,ps_d[s]);
-	  }
-	}
-      }
-      AXPYTimer.Stop();
-
-      PrecChangeTimer.Start();
-      precisionChange(p_f, p_d, pc_wk_d_to_s); //get back single prec search direction for linop
-      PrecChangeTimer.Stop();
-
-      cp=c;
-      MatrixTimer.Start();  
-      Linop_f.HermOp(p_f,mmp_f);
-      MatrixTimer.Stop();  
-
-      PrecChangeTimer.Start();
-      precisionChange(mmp_d, mmp_f, pc_wk_s_to_d); // From Float to Double
-      PrecChangeTimer.Stop();
-
-      AXPYTimer.Start();
-      d=real(innerProduct(p_d,mmp_d));    
-      axpy(mmp_d,mass[0],p_d,mmp_d);
-      AXPYTimer.Stop();
-      RealD rn = norm2(p_d);
-      d += rn*mass[0];
-    
-      bp=b;
-      b=-cp/d;
-
-      // Toggle the recurrence history
-      bs[0] = b;
-      iz = 1-iz;
-      ShiftTimer.Start();
-      for(int s=1;s<nshift;s++){
-	if((!converged[s])){
-	  RealD z0 = z[s][1-iz];
-	  RealD z1 = z[s][iz];
-	  z[s][iz] = z0*z1*bp
-	    / (b*a*(z1-z0) + z1*bp*(1- (mass[s]-mass[0])*b)); 
-	  bs[s] = b*z[s][iz]/z0; // NB sign  rel to Mike
-	}
-      }
-      ShiftTimer.Stop();
-
-      //Update double precision solutions
-      AXPYTimer.Start();
-      for(int s=0;s<nshift;s++){
-	int ss = s;
-	if( (!converged[s]) ) { 
-	  axpy(psi_d[ss],-bs[s]*alpha[s],ps_d[s],psi_d[ss]);
-	}
-      }
-
-      //Perform reliable update if necessary; otherwise update residual from single-prec mmp
-      c = axpy_norm(r_d,b,mmp_d,r_d);
-
-      AXPYTimer.Stop();
-
-      if(k % ReliableUpdateFreq == 0){
-	RealD c_old = c;
-	//Replace r with true residual
-	MatrixTimer.Start();  
-	Linop_d.HermOp(psi_d[0],mmp_d); 
-	MatrixTimer.Stop();  
-
-	AXPYTimer.Start();
-	axpy(mmp_d,mass[0],psi_d[0],mmp_d);
-
-	c = axpy_norm(r_d, -1.0, mmp_d, src_d);
-	AXPYTimer.Stop();
-
-	std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrec k="<<k<< ", replaced |r|^2 = "<<c_old <<" with |r|^2 = "<<c<<std::endl;
-      }
-    
-      // Convergence checks
-      int all_converged = 1;
-      for(int s=0;s<nshift;s++){
-      
-	if ( (!converged[s]) ){
-	  IterationsToCompleteShift[s] = k;
-	
-	  RealD css  = c * z[s][iz]* z[s][iz];
-	
-	  if(css<rsqf[s]){
-	    if ( ! converged[s] )
-	      std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrec k="<<k<<" Shift "<<s<<" has converged"<<std::endl;
-	    converged[s]=1;
-	  } else {
-	    all_converged=0;
-	  }
-
-	}
-      }
-
-      if ( all_converged || k == MaxIterationsMshift-1){
-
-	SolverTimer.Stop();
-
-	if ( all_converged ){
-	  std::cout<<GridLogMessage<< "ConjugateGradientMultiShiftMixedPrec: All shifts have converged iteration "<<k<<std::endl;
-	  std::cout<<GridLogMessage<< "ConjugateGradientMultiShiftMixedPrec: Checking solutions"<<std::endl;
-	} else {
-	  std::cout<<GridLogMessage<< "ConjugateGradientMultiShiftMixedPrec: Not all shifts have converged iteration "<<k<<std::endl;
-	}
-	
-	// Check answers 
-	for(int s=0; s < nshift; s++) { 
-	  Linop_d.HermOpAndNorm(psi_d[s],mmp_d,d,qq);
-	  axpy(tmp_d,mass[s],psi_d[s],mmp_d);
-	  axpy(r_d,-alpha[s],src_d,tmp_d);
-	  RealD rn = norm2(r_d);
-	  RealD cn = norm2(src_d);
-	  TrueResidualShift[s] = std::sqrt(rn/cn);
-	  std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrec: shift["<<s<<"] true residual "<< TrueResidualShift[s] << " target " << mresidual[s] << std::endl;
-
-	  //If we have not reached the desired tolerance, do a (mixed precision) CG cleanup
-	  if(rn >= rsq[s]){
-	    CleanupTimer.Start();
-	    std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrec: performing cleanup step for shift " << s << std::endl;
-
-	    //Setup linear operators for final cleanup
-	    ConjugateGradientMultiShiftMixedPrecSupport::ShiftedLinop<FieldD> Linop_shift_d(Linop_d, mass[s]);
-	    ConjugateGradientMultiShiftMixedPrecSupport::ShiftedLinop<FieldF> Linop_shift_f(Linop_f, mass[s]);
-					       
-	    MixedPrecisionConjugateGradient<FieldD,FieldF> cg(mresidual[s], MaxIterations, MaxIterations, SinglePrecGrid, Linop_shift_f, Linop_shift_d); 
-	    cg(src_d, psi_d[s]);
-	    
-	    TrueResidualShift[s] = cg.TrueResidual;
-	    CleanupTimer.Stop();
-	  }
-	}
-
-	std::cout << GridLogMessage << "ConjugateGradientMultiShiftMixedPrec: Time Breakdown for body"<<std::endl;
-	std::cout << GridLogMessage << "\tSolver    " << SolverTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\t\tAXPY    " << AXPYTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\t\tMatrix    " << MatrixTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\t\tShift    " << ShiftTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\t\tPrecision Change " << PrecChangeTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\tFinal Cleanup " << CleanupTimer.Elapsed()     <<std::endl;
-	std::cout << GridLogMessage << "\tSolver+Cleanup " << SolverTimer.Elapsed() + CleanupTimer.Elapsed() << std::endl;
-
-	IterationsToComplete = k;	
-
-	return;
-      }
-   
-    }
-    std::cout<<GridLogMessage<<"CG multi shift did not converge"<<std::endl;
-    GRID_ASSERT(0);
-  }
-
-};
-NAMESPACE_END(Grid);
-#endif

Grid/algorithms/iterative/ConjugateGradientReliableUpdate.h

@@ -35,7 +35,7 @@ template<class FieldD,class FieldF,
 	 typename std::enable_if< getPrecision<FieldF>::value == 1, int>::type = 0> 
 class ConjugateGradientReliableUpdate : public LinearFunction<FieldD> {
 public:
-  bool ErrorOnNoConverge;  // throw an GRID_ASSERT when the CG fails to converge.
+  bool ErrorOnNoConverge;  // throw an assert when the CG fails to converge.
   // Defaults true.
   RealD Tolerance;
   Integer MaxIterations;
@@ -48,7 +48,7 @@ public:
   LinearOperatorBase<FieldF> &Linop_f;
   LinearOperatorBase<FieldD> &Linop_d;
   GridBase* SinglePrecGrid;
-  RealD Delta; //reliable update parameter. A reliable update is performed when the residual drops by a factor of Delta relative to its value at the last update
+  RealD Delta; //reliable update parameter
 
   //Optional ability to switch to a different linear operator once the tolerance reaches a certain point. Useful for single/half -> single/single
   LinearOperatorBase<FieldF> *Linop_fallback;
@@ -65,9 +65,7 @@ public:
       ErrorOnNoConverge(err_on_no_conv),
       DoFinalCleanup(true),
       Linop_fallback(NULL)
-  {
+  {};
-    GRID_ASSERT(Delta > 0. && Delta < 1. && "Expect  0 < Delta < 1");
-  };
 
   void setFallbackLinop(LinearOperatorBase<FieldF> &_Linop_fallback, const RealD _fallback_transition_tol){
     Linop_fallback = &_Linop_fallback;
@@ -75,7 +73,6 @@ public:
   }
     
   void operator()(const FieldD &src, FieldD &psi) {
-    GRID_TRACE("ConjugateGradientReliableUpdate");
     LinearOperatorBase<FieldF> *Linop_f_use = &Linop_f;
     bool using_fallback = false;
       
@@ -90,7 +87,7 @@ public:
 
     // Initial residual computation & set up
     RealD guess = norm2(psi);
-    GRID_ASSERT(std::isnan(guess) == 0);
+    assert(std::isnan(guess) == 0);
     
     Linop_d.HermOpAndNorm(psi, mmp, d, b);
     
@@ -118,12 +115,9 @@ public:
     }
 
     //Single prec initialization
-    precisionChangeWorkspace pc_wk_sp_to_dp(src.Grid(), SinglePrecGrid);
-    precisionChangeWorkspace pc_wk_dp_to_sp(SinglePrecGrid, src.Grid());
-    
     FieldF r_f(SinglePrecGrid);
     r_f.Checkerboard() = r.Checkerboard();
-    precisionChange(r_f, r, pc_wk_dp_to_sp);
+    precisionChange(r_f, r);
 
     FieldF psi_f(r_f);
     psi_f = Zero();
@@ -139,7 +133,6 @@ public:
     GridStopWatch LinalgTimer;
     GridStopWatch MatrixTimer;
     GridStopWatch SolverTimer;
-    GridStopWatch PrecChangeTimer;
 
     SolverTimer.Start();
     int k = 0;
@@ -179,9 +172,7 @@ public:
       // Stopping condition
       if (cp <= rsq) {
 	//Although not written in the paper, I assume that I have to add on the final solution
-	PrecChangeTimer.Start();
+	precisionChange(mmp, psi_f);
-	precisionChange(mmp, psi_f, pc_wk_sp_to_dp);
-	PrecChangeTimer.Stop();
 	psi = psi + mmp;
 	
 	
@@ -202,9 +193,6 @@ public:
 	std::cout << GridLogMessage << "\tElapsed    " << SolverTimer.Elapsed() <<std::endl;
 	std::cout << GridLogMessage << "\tMatrix     " << MatrixTimer.Elapsed() <<std::endl;
 	std::cout << GridLogMessage << "\tLinalg     " << LinalgTimer.Elapsed() <<std::endl;
-	std::cout << GridLogMessage << "\tPrecChange " << PrecChangeTimer.Elapsed() <<std::endl;
-	std::cout << GridLogMessage << "\tPrecChange avg time " << PrecChangeTimer.Elapsed()/(2*l+1) <<std::endl;
-
 
 	IterationsToComplete = k;	
 	ReliableUpdatesPerformed = l;
@@ -217,7 +205,7 @@ public:
 	  CG(Linop_d,src,psi);
 	  IterationsToCleanup = CG.IterationsToComplete;
 	}
-	else if (ErrorOnNoConverge) GRID_ASSERT(true_residual / Tolerance < 10000.0);
+	else if (ErrorOnNoConverge) assert(true_residual / Tolerance < 10000.0);
 
 	std::cout << GridLogMessage << "ConjugateGradientReliableUpdate complete.\n";
 	return;
@@ -225,21 +213,14 @@ public:
       else if(cp < Delta * MaxResidSinceLastRelUp) { //reliable update
 	std::cout << GridLogMessage << "ConjugateGradientReliableUpdate "
 		  << cp << "(residual) < " << Delta << "(Delta) * " << MaxResidSinceLastRelUp << "(MaxResidSinceLastRelUp) on iteration " << k << " : performing reliable update\n";
-	PrecChangeTimer.Start();
+	precisionChange(mmp, psi_f);
-	precisionChange(mmp, psi_f, pc_wk_sp_to_dp);
-	PrecChangeTimer.Stop();
 	psi = psi + mmp;
 
-	MatrixTimer.Start();
 	Linop_d.HermOpAndNorm(psi, mmp, d, qq);
-	MatrixTimer.Stop();
-	
 	r = src - mmp;
 
 	psi_f = Zero();
-	PrecChangeTimer.Start();
+	precisionChange(r_f, r);
-	precisionChange(r_f, r, pc_wk_dp_to_sp);
-	PrecChangeTimer.Stop();
 	cp = norm2(r);
 	MaxResidSinceLastRelUp = cp;
 
@@ -263,7 +244,7 @@ public:
     std::cout << GridLogMessage << "ConjugateGradientReliableUpdate did NOT converge"
 	      << std::endl;
       
-    if (ErrorOnNoConverge) GRID_ASSERT(0);
+    if (ErrorOnNoConverge) assert(0);
     IterationsToComplete = k;
     ReliableUpdatesPerformed = l;      
   }    

Grid/algorithms/iterative/ConjugateResidual.h

@@ -106,7 +106,7 @@ public:
     }
 
     std::cout<<GridLogMessage<<"ConjugateResidual did NOT converge"<<std::endl;
-    GRID_ASSERT(0);
+    assert(0);
   }
 };
 NAMESPACE_END(Grid);

Grid/algorithms/iterative/Deflation.h

@@ -33,19 +33,16 @@ namespace Grid {
 template<class Field>
 class ZeroGuesser: public LinearFunction<Field> {
 public:
-  using LinearFunction<Field>::operator();
     virtual void operator()(const Field &src, Field &guess) { guess = Zero(); };
 };
 template<class Field>
 class DoNothingGuesser: public LinearFunction<Field> {
 public:
-  using LinearFunction<Field>::operator();
   virtual void operator()(const Field &src, Field &guess) {  };
 };
 template<class Field>
 class SourceGuesser: public LinearFunction<Field> {
 public:
-  using LinearFunction<Field>::operator();
   virtual void operator()(const Field &src, Field &guess) { guess = src; };
 };
 
@@ -57,24 +54,15 @@ class DeflatedGuesser: public LinearFunction<Field> {
 private:
   const std::vector<Field> &evec;
   const std::vector<RealD> &eval;
-  const unsigned int       N;
 
 public:
-  using LinearFunction<Field>::operator();
 
-  DeflatedGuesser(const std::vector<Field> & _evec,const std::vector<RealD> & _eval)
+  DeflatedGuesser(const std::vector<Field> & _evec,const std::vector<RealD> & _eval) : evec(_evec), eval(_eval) {};
-  : DeflatedGuesser(_evec, _eval, _evec.size())
-  {}
-
-  DeflatedGuesser(const std::vector<Field> & _evec, const std::vector<RealD> & _eval, const unsigned int _N)
-  : evec(_evec), eval(_eval), N(_N)
-  {
-    GRID_ASSERT(evec.size()==eval.size());
-    GRID_ASSERT(N <= evec.size());
-  } 
 
   virtual void operator()(const Field &src,Field &guess) {
     guess = Zero();
+    assert(evec.size()==eval.size());
+    auto N = evec.size();
     for (int i=0;i<N;i++) {
       const Field& tmp = evec[i];
       axpy(guess,TensorRemove(innerProduct(tmp,src)) / eval[i],tmp,guess);
@@ -91,7 +79,6 @@ private:
   const std::vector<RealD>       &eval_coarse;
 public:
   
-  using LinearFunction<FineField>::operator();
   LocalCoherenceDeflatedGuesser(const std::vector<FineField>   &_subspace,
 				const std::vector<CoarseField> &_evec_coarse,
 				const std::vector<RealD>       &_eval_coarse)
@@ -113,42 +100,7 @@ public:
     blockPromote(guess_coarse,guess,subspace);
     guess.Checkerboard() = src.Checkerboard();
   };
-
+};
-  void operator()(const std::vector<FineField> &src,std::vector<FineField> &guess) {
-    int Nevec = (int)evec_coarse.size();
-    int Nsrc = (int)src.size();
-    // make temp variables
-    std::vector<CoarseField> src_coarse(Nsrc,evec_coarse[0].Grid());
-    std::vector<CoarseField> guess_coarse(Nsrc,evec_coarse[0].Grid());    
-    //Preporcessing
-    std::cout << GridLogMessage << "Start BlockProject for loop" << std::endl;
-    for (int j=0;j<Nsrc;j++)
-    {
-    guess_coarse[j] = Zero();
-    std::cout << GridLogMessage << "BlockProject iter: " << j << std::endl;
-    blockProject(src_coarse[j],src[j],subspace);
-    }
-    //deflation set up for eigen vector batchsize 1 and source batch size equal number of sources
-    std::cout << GridLogMessage << "Start ProjectAccum for loop" << std::endl;
-    for (int i=0;i<Nevec;i++)
-    {
-      std::cout << GridLogMessage << "ProjectAccum Nvec: " << i << std::endl;
-      const CoarseField & tmp = evec_coarse[i];
-      for (int j=0;j<Nsrc;j++)
-      {
-        axpy(guess_coarse[j],TensorRemove(innerProduct(tmp,src_coarse[j])) / eval_coarse[i],tmp,guess_coarse[j]);
-      }
-    }
-    //postprocessing
-    std::cout << GridLogMessage << "Start BlockPromote for loop" << std::endl;
-    for (int j=0;j<Nsrc;j++) {
-      std::cout << GridLogMessage << "BlockProject iter: " << j << std::endl;
-      blockPromote(guess_coarse[j],guess[j],subspace);
-      guess[j].Checkerboard() = src[j].Checkerboard();
-    }
-  };
-
-  };
 
 
 

Grid/algorithms/iterative/FlexibleCommunicationAvoidingGeneralisedMinimalResidual.h

@@ -36,7 +36,7 @@ class FlexibleCommunicationAvoidingGeneralisedMinimalResidual : public OperatorF
  public:
   using OperatorFunction<Field>::operator();
 
-  bool ErrorOnNoConverge; // Throw an GRID_ASSERT when FCAGMRES fails to converge,
+  bool ErrorOnNoConverge; // Throw an assert when FCAGMRES fails to converge,
                           // defaults to true
 
   RealD   Tolerance;
@@ -87,7 +87,7 @@ class FlexibleCommunicationAvoidingGeneralisedMinimalResidual : public OperatorF
     conformable(psi, src);
 
     RealD guess = norm2(psi);
-    GRID_ASSERT(std::isnan(guess) == 0);
+    assert(std::isnan(guess) == 0);
 
     RealD cp;
     RealD ssq = norm2(src);
@@ -144,7 +144,7 @@ class FlexibleCommunicationAvoidingGeneralisedMinimalResidual : public OperatorF
     std::cout << GridLogMessage << "FlexibleCommunicationAvoidingGeneralisedMinimalResidual did NOT converge" << std::endl;
 
     if (ErrorOnNoConverge)
-      GRID_ASSERT(0);
+      assert(0);
   }
 
   RealD outerLoopBody(LinearOperatorBase<Field> &LinOp, const Field &src, Field &psi, RealD rsq) {
@@ -191,7 +191,7 @@ class FlexibleCommunicationAvoidingGeneralisedMinimalResidual : public OperatorF
       }
     }
 
-    GRID_ASSERT(0); // Never reached
+    assert(0); // Never reached
     return cp;
   }
 

Grid/algorithms/iterative/FlexibleGeneralisedMinimalResidual.h

@@ -36,7 +36,7 @@ class FlexibleGeneralisedMinimalResidual : public OperatorFunction<Field> {
  public:
   using OperatorFunction<Field>::operator();
 
-  bool ErrorOnNoConverge; // Throw an GRID_ASSERT when FGMRES fails to converge,
+  bool ErrorOnNoConverge; // Throw an assert when FGMRES fails to converge,
                           // defaults to true
 
   RealD   Tolerance;
@@ -85,7 +85,7 @@ class FlexibleGeneralisedMinimalResidual : public OperatorFunction<Field> {
     conformable(psi, src);
 
     RealD guess = norm2(psi);
-    GRID_ASSERT(std::isnan(guess) == 0);
+    assert(std::isnan(guess) == 0);
 
     RealD cp;
     RealD ssq = norm2(src);
@@ -142,7 +142,7 @@ class FlexibleGeneralisedMinimalResidual : public OperatorFunction<Field> {
     std::cout << GridLogMessage << "FlexibleGeneralisedMinimalResidual did NOT converge" << std::endl;
 
     if (ErrorOnNoConverge)
-      GRID_ASSERT(0);
+      assert(0);
   }
 
   RealD outerLoopBody(LinearOperatorBase<Field> &LinOp, const Field &src, Field &psi, RealD rsq) {
@@ -189,7 +189,7 @@ class FlexibleGeneralisedMinimalResidual : public OperatorFunction<Field> {
       }
     }
 
-    GRID_ASSERT(0); // Never reached
+    assert(0); // Never reached
     return cp;
   }
 

Grid/algorithms/iterative/GeneralisedMinimalResidual.h

@@ -36,7 +36,7 @@ class GeneralisedMinimalResidual : public OperatorFunction<Field> {
  public:
   using OperatorFunction<Field>::operator();
 
-  bool ErrorOnNoConverge; // Throw an GRID_ASSERT when GMRES fails to converge,
+  bool ErrorOnNoConverge; // Throw an assert when GMRES fails to converge,
                           // defaults to true
 
   RealD   Tolerance;
@@ -80,7 +80,7 @@ class GeneralisedMinimalResidual : public OperatorFunction<Field> {
     conformable(psi, src);
 
     RealD guess = norm2(psi);
-    GRID_ASSERT(std::isnan(guess) == 0);
+    assert(std::isnan(guess) == 0);
 
     RealD cp;
     RealD ssq = norm2(src);
@@ -135,7 +135,7 @@ class GeneralisedMinimalResidual : public OperatorFunction<Field> {
     std::cout << GridLogMessage << "GeneralisedMinimalResidual did NOT converge" << std::endl;
 
     if (ErrorOnNoConverge)
-      GRID_ASSERT(0);
+      assert(0);
   }
 
   RealD outerLoopBody(LinearOperatorBase<Field> &LinOp, const Field &src, Field &psi, RealD rsq) {
@@ -181,7 +181,7 @@ class GeneralisedMinimalResidual : public OperatorFunction<Field> {
       }
     }
 
-    GRID_ASSERT(0); // Never reached
+    assert(0); // Never reached
     return cp;
   }
 

Grid/algorithms/iterative/ImplicitlyRestartedBlockLanczos.h

@@ -7,8 +7,9 @@
     Copyright (C) 2015
 
 Author: Peter Boyle <paboyle@ph.ed.ac.uk>
+Author: Chulwoo Jung
 Author: Yong-Chull Jang <ypj@quark.phy.bnl.gov> 
-Author: Chulwoo Jung <chulwoo@bnl.gov>
+Author: Guido Cossu
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -175,7 +176,7 @@ public:
       eresid(_eresid),  MaxIter(_MaxIter),
       diagonalisation(_diagonalisation),split_test(0),
       Nevec_acc(_Nu)
-  { GRID_ASSERT( (Nk%Nu==0) && (Nm%Nu==0) ); };
+  { assert( (Nk%Nu==0) && (Nm%Nu==0) ); };
 
   ////////////////////////////////
   // Helpers
@@ -184,6 +185,10 @@ public:
   {
     RealD nn = norm2(v);
     nn = sqrt(nn);
+#if 0
+    if(if_print && nn < 1e20)
+    Glog<<"normalize: "<<nn<<std::endl;
+#endif
     v = v * (1.0/nn);
     return nn;
   }
@@ -206,7 +211,7 @@ public:
           Glog<<"orthogonalize after: "<<j<<" of "<<k<<" "<< ip <<std::endl;
       }
     }
-    GRID_ASSERT(normalize(w,if_print) != 0);
+    assert(normalize(w,if_print) != 0);
   }
   void reorthogonalize(Field& w, std::vector<Field>& evec, int k)
   {
@@ -222,10 +227,22 @@ public:
     for(int j=0; j<k; ++j){
     for(int i=0; i<_Nu; ++i){
       ip = innerProduct(evec[j],w[i]); 
+#if 0
+      if(if_print) 
+      if( norm(ip)/norm2(w[i]) > 1e-14)
+      Glog<<"orthogonalize before: "<<i<<" "<<j<<" of "<<k<<" "<< ip <<std::endl;
+#endif
       w[i] = w[i] - ip * evec[j];
+#if 0
+      if(if_print) {
+        ip = innerProduct(evec[j],w[i]); 
+        if( norm(ip)/norm2(w[i]) > 1e-14)
+          Glog<<"orthogonalize after: "<<i<<" "<<j<<" of "<<k<<" "<< ip <<std::endl;
+      }
+#endif
     }}
     for(int i=0; i<_Nu; ++i)
-    GRID_ASSERT(normalize(w[i],if_print) !=0);
+    assert(normalize(w[i],if_print) !=0);
   }
 
 
@@ -244,10 +261,18 @@ public:
     const uint64_t sites = grid->lSites();
 
     int Nbatch = R/Nevec_acc;
-    GRID_ASSERT( R%Nevec_acc == 0 );
+    assert( R%Nevec_acc == 0 );
 //    Glog << "nBatch, Nevec_acc, R, Nu = " 
 //         << Nbatch << "," << Nevec_acc << "," << R << "," << Nu << std::endl;
     
+#if 0 // a trivial test
+    for (int col=0; col<Nu; ++col) {
+      for (size_t row=0; row<sites*12; ++row) {
+        w_acc[col*sites*12+row].x = 1.0;
+        w_acc[col*sites*12+row].y = 0.0;
+      }
+    }
+#else 
     for (int col=0; col<Nu; ++col) {
 //      auto w_v = w[col].View();
       autoView( w_v,w[col], AcceleratorWrite);
@@ -257,6 +282,7 @@ public:
         w_acc[col*sites*12+row] = z[row];
       }
     }
+#endif
     cublasHandle_t handle;
     cublasStatus_t stat;
     
@@ -265,6 +291,14 @@ public:
     Glog << "cuBLAS Zgemm"<< std::endl;
     
     for (int b=0; b<Nbatch; ++b) {
+#if 0 // a trivial test
+      for (int col=0; col<Nevec_acc; ++col) {
+        for (size_t row=0; row<sites*12; ++row) {
+          evec_acc[col*sites*12+row].x = 1.0;
+          evec_acc[col*sites*12+row].y = 0.0;
+        }
+      }
+#else 
       for (int col=0; col<Nevec_acc; ++col) {
 //        auto evec_v = evec[b*Nevec_acc+col].View();
         autoView( evec_v,evec[b*Nevec_acc+col], AcceleratorWrite);
@@ -274,6 +308,7 @@ public:
           evec_acc[col*sites*12+row] = z[row];
         }
       }
+#endif 
       CUDA_COMPLEX alpha = MAKE_CUDA_COMPLEX(1.0,0.0);
       CUDA_COMPLEX beta = MAKE_CUDA_COMPLEX(0.0,0.0);
       stat = CUDA_GEMM(handle, CUBLAS_OP_C, CUBLAS_OP_N, Nevec_acc, Nu, 12*sites,
@@ -284,6 +319,19 @@ public:
       //Glog << stat << std::endl;
       
       grid->GlobalSumVector((CUDA_FLOAT*)c_acc,2*Nu*Nevec_acc);
+#if 0      
+      for (int i=0; i<Nu; ++i) {
+        for (size_t j=0; j<Nevec_acc; ++j) {
+          CUDA_COMPLEX z = c_acc[i*Nevec_acc+j];
+          MyComplex ip(z.x,z.y);
+          if (do_print) {
+            Glog << "<evec,w>[" << j << "," << i << "] = " 
+                 << z.x << " + i " << z.y << std::endl;
+          }
+          w[i] = w[i] - ip * evec[b*Nevec_acc+j];
+        }
+      }
+#else
       alpha = MAKE_CUDA_COMPLEX(-1.0,0.0);
       beta = MAKE_CUDA_COMPLEX(1.0,0.0);
       stat = CUDA_GEMM(handle, CUBLAS_OP_N, CUBLAS_OP_N, 12*sites, Nu, Nevec_acc,
@@ -292,7 +340,9 @@ public:
                          &beta, 
                          w_acc, 12*sites);
       //Glog << stat << std::endl;
+#endif
     }
+#if 1    
     for (int col=0; col<Nu; ++col) {
 //      auto w_v = w[col].View();
       autoView( w_v,w[col], AcceleratorWrite);
@@ -301,8 +351,9 @@ public:
         z[row] = w_acc[col*sites*12+row];
       }
     }
+#endif
     for (int i=0; i<Nu; ++i) {
-      GRID_ASSERT(normalize(w[i],do_print)!=0);
+      assert(normalize(w[i],do_print)!=0);
     }
     
     Glog << "cuBLAS Zgemm done"<< std::endl;
@@ -317,6 +368,56 @@ public:
   }
 
 
+#if 0
+void innerProductD (std::vector<ComplexD> &inner, std::vector<Field>& lhs, int llhs, std::vector<Field>& rhs, int lrhs)
+{
+  typedef typename Field:vector_object vobj;
+  typedef typename vobj::scalar_type scalar_type;
+  typedef typename vobj::vector_typeD vector_type;
+  GridBase *grid = lhs[0]._grid;
+  assert(grid == rhs[0]._grid;
+  const int pad = 8;
+  int total = llhs*lrhs;
+  assert(inner.size()==total);
+  int sum_size=grid->SumArraySize();
+
+//  std::vector<ComplexD> inner(total);
+  Vector<ComplexD> sumarray(sum_size*pad*total);
+
+  parallel_for(int thr=0;thr<sum_size;thr++){
+    int nwork, mywork, myoff;
+    GridThread::GetWork(grid->oSites(),thr,mywork,myoff);
+    
+    std::vector< decltype(innerProductD(lhs[0]._odata[0],rhs[0]._odata[0])) > vinner(total,zero); // private to thread; sub summation
+    for(int ss=myoff;ss<mywork+myoff; ss++){
+    for(int i=0; i<llhs; ++i){
+    for(int j=0; j<lrhs; ++j){
+      vinner[i*k+j] += innerProductD(lhs[i]._odata[ss],rhs[j]._odata[ss]);
+    }}
+    }
+    // All threads sum across SIMD; reduce serial work at end
+    // one write per cacheline with streaming store
+    for(int i=0; i<total; ++i){
+    ComplexD tmp = Reduce(TensorRemove(vinner[i])) ;
+    vstream(sumarray[(i*sum_size+thr)*pad],tmp);
+    }
+  }
+  
+for( int i =0;i<total;i++){
+  inner[i]=0.0;
+  for(int j=0;j<sum_size;j++){
+    inner[i] += sumarray[(i*sum_size+j)*pad];
+  } 
+}
+  for( int i =0;i<total;i++){
+    ComplexD tmp=inner[i];
+    evec[0]._grid->GlobalSum(tmp);
+    inner[i]=tmp;
+  }
+//  return inner;
+}
+#endif
+
   
   void orthogonalize_blockhead(Field& w, std::vector<Field>& evec, int k, int Nu)
   {
@@ -374,8 +475,8 @@ cudaStat = cudaMallocManaged((void **)&evec_acc, Nevec_acc*sites*12*sizeof(CUDA_
   {
     std::string fname = std::string(cname+"::calc_irbl()"); 
     GridBase *grid = evec[0].Grid();
-    GRID_ASSERT(grid == src[0].Grid());
+    assert(grid == src[0].Grid());
-    GRID_ASSERT( Nu = src.size() );
+    assert( Nu = src.size() );
     
     Glog << std::string(74,'*') << std::endl;
     Glog << fname + " starting iteration 0 /  "<< MaxIter<< std::endl;
@@ -396,7 +497,7 @@ cudaStat = cudaMallocManaged((void **)&evec_acc, Nevec_acc*sites*12*sizeof(CUDA_
     }
     Glog << std::string(74,'*') << std::endl;
     
-    GRID_ASSERT(Nm == evec.size() && Nm == eval.size());
+    assert(Nm == evec.size() && Nm == eval.size());
 
     std::vector<std::vector<ComplexD>> lmd(Nu,std::vector<ComplexD>(Nm,0.0));  
     std::vector<std::vector<ComplexD>> lme(Nu,std::vector<ComplexD>(Nm,0.0));  
@@ -579,8 +680,8 @@ cudaStat = cudaMallocManaged((void **)&evec_acc, Nevec_acc*sites*12*sizeof(CUDA_
   {
     std::string fname = std::string(cname+"::calc_rbl()"); 
     GridBase *grid = evec[0].Grid();
-    GRID_ASSERT(grid == src[0].Grid());
+    assert(grid == src[0].Grid());
-    GRID_ASSERT( Nu = src.size() );
+    assert( Nu = src.size() );
 
     int Np = (Nm-Nk);
     if (Np > 0 && MaxIter > 1) Np /= MaxIter;
@@ -607,7 +708,7 @@ cudaStat = cudaMallocManaged((void **)&evec_acc, Nevec_acc*sites*12*sizeof(CUDA_
     }
     Glog << std::string(74,'*') << std::endl;
     
-    GRID_ASSERT(Nm == evec.size() && Nm == eval.size());
+    assert(Nm == evec.size() && Nm == eval.size());
 	
     std::vector<std::vector<ComplexD>> lmd(Nu,std::vector<ComplexD>(Nm,0.0));  
     std::vector<std::vector<ComplexD>> lme(Nu,std::vector<ComplexD>(Nm,0.0));  
@@ -738,6 +839,14 @@ cudaStat = cudaMallocManaged((void **)&evec_acc, Nevec_acc*sites*12*sizeof(CUDA_
       Glog << fname + " CONVERGED ; Summary :\n";
       // Sort convered eigenpairs.
       std::vector<Field>  Btmp(Nstop,grid); // waste of space replicating
+#if 0
+      for(int i=0; i<Nconv; ++i) Btmp[i]=0;
+      for(int i=0; i<Nconv; ++i)
+      for(int k = 0; k<Nr; ++k){
+         Btmp[i].Checkerboard() = evec[k].Checkerboard();
+         Btmp[i] += evec[k]*Qt(k,i);
+      }
+#endif
 
       for(int i=0; i<Nstop; ++i){
 	  Btmp[i]=0.;
@@ -755,7 +864,7 @@ cudaStat = cudaMallocManaged((void **)&evec_acc, Nevec_acc*sites*12*sizeof(CUDA_
           
           std::cout.precision(13);
           std::cout << "[" << std::setw(4)<< std::setiosflags(std::ios_base::right) <<i<<"] ";
-          std::cout << "eval = "<<std::setw(20)<< std::setiosflags(std::ios_base::left)<< vnum/vden;
+          std::cout << "eval = "<<std::setw(20)<< std::setiosflags(std::ios_base::left)<< vnum/vden<<" "<<eval2[i];;
           std::cout << "   resid^2 = "<< std::setw(20)<< std::setiosflags(std::ios_base::right)<< vv<< std::endl;
         eval[i] = vnum/vden;
       }
@@ -785,7 +894,7 @@ private:
     
     int Nu = w.size();
     int Nm = evec.size();
-    GRID_ASSERT( b < Nm/Nu );
+    assert( b < Nm/Nu );
 //    GridCartesian *grid = evec[0]._grid;
     
     // converts block index to full indicies for an interval [L,R)
@@ -796,7 +905,7 @@ private:
 
     Glog << "Using split grid"<< std::endl;
 //   LatticeGaugeField s_Umu(SGrid);
-   GRID_ASSERT((Nu%mrhs)==0);
+   assert((Nu%mrhs)==0);
    std::vector<Field>   in(mrhs,f_grid);
      
     Field s_in(sf_grid);
@@ -906,12 +1015,31 @@ if(split_test){
     
     for (int u=0; u<Nu; ++u) {
 //      Glog << "norm2(w[" << u << "])= "<< norm2(w[u]) << std::endl;
-      GRID_ASSERT (!isnan(norm2(w[u])));
+      assert (!isnan(norm2(w[u])));
       for (int k=L+u; k<R; ++k) {
         Glog <<" In block "<< b << "," <<" beta[" << u << "," << k-L << "] = " << lme[u][k] << std::endl;
       }
     }
     Glog << "LinAlg done "<< std::endl;
+#if 0    
+    Glog << "Gram Schmidt "<< std::endl;
+    // re-orthogonalization for numerical stability
+    if (b>0) {
+      for (int u=0; u<Nu; ++u) {
+        orthogonalize(w[u],evec,R);
+      }
+      for (int u=1; u<Nu; ++u) {
+        orthogonalize(w[u],w,u);
+      }
+    }
+    //if (b>0) {
+    //  orthogonalize_blockhead(w[0],evec,b,Nu);
+    //  for (int u=1; u<Nu; ++u) {
+    //    orthogonalize(w[u],w,u);
+    //  }
+    //}
+    Glog << "Gram Schmidt done "<< std::endl;
+#endif
 
     if (b < Nm/Nu-1) {
       for (int u=0; u<Nu; ++u) {
@@ -929,8 +1057,8 @@ if(split_test){
 			 Eigen::MatrixXcd & Qt, // Nm x Nm
 			 GridBase *grid)
   {
-    GRID_ASSERT( Nk%Nu == 0 && Nm%Nu == 0 );
+    assert( Nk%Nu == 0 && Nm%Nu == 0 );
-    GRID_ASSERT( Nk <= Nm );
+    assert( Nk <= Nm );
     Eigen::MatrixXcd BlockTriDiag = Eigen::MatrixXcd::Zero(Nk,Nk);
     
     for ( int u=0; u<Nu; ++u ) {
@@ -970,8 +1098,8 @@ if(split_test){
 			 GridBase *grid)
   {
     Glog << "diagonalize_lapack: Nu= "<<Nu<<" Nk= "<<Nk<<" Nm= "<<std::endl;
-    GRID_ASSERT( Nk%Nu == 0 && Nm%Nu == 0 );
+    assert( Nk%Nu == 0 && Nm%Nu == 0 );
-    GRID_ASSERT( Nk <= Nm );
+    assert( Nk <= Nm );
     Eigen::MatrixXcd BlockTriDiag = Eigen::MatrixXcd::Zero(Nk,Nk);
     
     for ( int u=0; u<Nu; ++u ) {
@@ -990,6 +1118,7 @@ if(split_test){
     }
     //std::cout << BlockTriDiag << std::endl;
 //#ifdef USE_LAPACK
+#if 1
   const int size = Nm;
   MKL_INT NN = Nk;
 //  double evals_tmp[NN];
@@ -1060,6 +1189,20 @@ if(split_test){
       grid->GlobalSumVector((double*)evec_tmp,2*NN*NN);
     }
   } 
+  // Safer to sort instead of just reversing it, 
+  // but the document of the routine says evals are sorted in increasing order. 
+  // qr gives evals in decreasing order.
+//  for(int i=0;i<NN;i++){
+//    lmd [NN-1-i]=evals_tmp[i];
+//    for(int j=0;j<NN;j++){
+//      Qt((NN-1-i),j)=evec_tmp[i][j];
+//    }
+//  }
+
+//  MKL_Complex16 *eval_tmp = malloc(NN*sizeof(MKL_Complex16));
+//  MKL_Complex16 *evec_tmp = malloc(NN*NN*sizeof(MKL_Complex16));
+//  MKL_Complex16 *DD = malloc(NN*NN*sizeof(MKL_Complex16));
+#endif
     for (int i = 0; i < Nk; i++) 
       eval[Nk-1-i] = evals_tmp[i];
     for (int i = 0; i < Nk; i++) {
@@ -1119,7 +1262,7 @@ if (1){
       diagonalize_lapack(eval,lmd,lme,Nu,Nk,Nm,Qt,grid);
 #endif
     } else { 
-      GRID_ASSERT(0);
+      assert(0);
     }
   }
   
@@ -1131,8 +1274,8 @@ if (1){
          Eigen::MatrixXcd& M)
   {
     //Glog << "unpackHermitBlockTriDiagMatToEigen() begin" << '\n'; 
-    GRID_ASSERT( Nk%Nu == 0 && Nm%Nu == 0 );
+    assert( Nk%Nu == 0 && Nm%Nu == 0 );
-    GRID_ASSERT( Nk <= Nm );
+    assert( Nk <= Nm );
     M = Eigen::MatrixXcd::Zero(Nk,Nk);
     
     // rearrange 
@@ -1159,8 +1302,8 @@ if (1){
          Eigen::MatrixXcd& M)
   {
     //Glog << "packHermitBlockTriDiagMatfromEigen() begin" << '\n'; 
-    GRID_ASSERT( Nk%Nu == 0 && Nm%Nu == 0 );
+    assert( Nk%Nu == 0 && Nm%Nu == 0 );
-    GRID_ASSERT( Nk <= Nm );
+    assert( Nk <= Nm );
     
     // rearrange 
     for ( int u=0; u<Nu; ++u ) {

Grid/algorithms/iterative/ImplicitlyRestartedLanczos.h

@@ -79,16 +79,14 @@ template<class Field> class ImplicitlyRestartedLanczosHermOpTester  : public Imp
     RealD vv = norm2(v) / ::pow(evalMaxApprox,2.0);
 
     std::cout.precision(13);
-
-    int conv=0;
-    if( (vv<eresid*eresid) ) conv = 1;
-
     std::cout<<GridLogIRL  << "[" << std::setw(3)<<j<<"] "
 	     <<"eval = "<<std::setw(25)<< eval << " (" << eval_poly << ")"
 	     <<" |H B[i] - eval[i]B[i]|^2 / evalMaxApprox^2 " << std::setw(25) << vv
-	     <<" target " << eresid*eresid << " conv " <<conv
 	     <<std::endl;
 
+    int conv=0;
+    if( (vv<eresid*eresid) ) conv = 1;
+
     return conv;
   }
 };
@@ -211,7 +209,7 @@ until convergence
   void calc(std::vector<RealD>& eval, std::vector<Field>& evec,  const Field& src, int& Nconv, bool reverse=false)
   {
     GridBase *grid = src.Grid();
-    GRID_ASSERT(grid == evec[0].Grid());
+    assert(grid == evec[0].Grid());
     
     //    GridLogIRL.TimingMode(1);
     std::cout << GridLogIRL <<"**************************************************************************"<< std::endl;
@@ -231,7 +229,7 @@ until convergence
     }
     std::cout << GridLogIRL <<"**************************************************************************"<< std::endl;
 	
-    GRID_ASSERT(Nm <= evec.size() && Nm <= eval.size());
+    assert(Nm <= evec.size() && Nm <= eval.size());
     
     // quickly get an idea of the largest eigenvalue to more properly normalize the residuum
     RealD evalMaxApprox = 0.0;
@@ -245,10 +243,9 @@ until convergence
 	_HermOp(src_n,tmp);
 	//	std::cout << GridLogMessage<< tmp<<std::endl; exit(0);
 	//	std::cout << GridLogIRL << " _HermOp " << norm2(tmp) << std::endl;
-//	RealD vnum = real(innerProduct(src_n,tmp)); // HermOp.
+	RealD vnum = real(innerProduct(src_n,tmp)); // HermOp.
-	RealD vnum = real(innerProduct(tmp,tmp)); // HermOp^2.
 	RealD vden = norm2(src_n);
-	RealD na = std::sqrt(vnum/vden);
+	RealD na = vnum/vden;
 	if (fabs(evalMaxApprox/na - 1.0) < 0.0001)
 	  i=_MAX_ITER_IRL_MEVAPP_;
 	evalMaxApprox = na;
@@ -256,7 +253,6 @@ until convergence
 	src_n = tmp;
       }
     }
-    std::cout << GridLogIRL << " Final evalMaxApprox  " << evalMaxApprox << std::endl;
 	
     std::vector<RealD> lme(Nm);  
     std::vector<RealD> lme2(Nm);
@@ -337,7 +333,7 @@ until convergence
       }
       std::cout<<GridLogIRL <<"QR decomposed "<<std::endl;
 
-      GRID_ASSERT(k2<Nm);      GRID_ASSERT(k2<Nm);      GRID_ASSERT(k1>0);
+      assert(k2<Nm);      assert(k2<Nm);      assert(k1>0);
 
       basisRotate(evec,Qt,k1-1,k2+1,0,Nm,Nm); /// big constraint on the basis
       std::cout<<GridLogIRL <<"basisRotated  by Qt *"<<k1-1<<","<<k2+1<<")"<<std::endl;
@@ -423,15 +419,14 @@ until convergence
 	}
       }
 
-      if ( Nconv < Nstop ) {
+      if ( Nconv < Nstop )
 	std::cout << GridLogIRL << "Nconv ("<<Nconv<<") < Nstop ("<<Nstop<<")"<<std::endl;
-	std::cout << GridLogIRL << "returning Nstop vectors, the last "<< Nstop-Nconv << "of which might meet convergence criterion only approximately" <<std::endl;
+
-      }
       eval=eval2;
       
       //Keep only converged
-      eval.resize(Nstop);// was Nconv
+      eval.resize(Nconv);// Nstop?
-      evec.resize(Nstop,grid);// was Nconv
+      evec.resize(Nconv,grid);// Nstop?
       basisSortInPlace(evec,eval,reverse);
       
     }
@@ -461,15 +456,15 @@ until convergence
 	    std::vector<Field>& evec,
 	    Field& w,int Nm,int k)
   {
-    std::cout<<GridLogDebug << "Lanczos step " <<k<<std::endl;
+    std::cout<<GridLogIRL << "Lanczos step " <<k<<std::endl;
     const RealD tiny = 1.0e-20;
-    GRID_ASSERT( k< Nm );
+    assert( k< Nm );
 
     GridStopWatch gsw_op,gsw_o;
 
     Field& evec_k = evec[k];
 
-    _PolyOp(evec_k,w);    std::cout<<GridLogDebug << "PolyOp" <<std::endl;
+    _PolyOp(evec_k,w);    std::cout<<GridLogIRL << "PolyOp" <<std::endl;
 
     if(k>0) w -= lme[k-1] * evec[k-1];
 
@@ -484,18 +479,18 @@ until convergence
     lme[k] = beta;
 
     if ( (k>0) && ( (k % orth_period) == 0 )) {
-      std::cout<<GridLogDebug << "Orthogonalising " <<k<<std::endl;
+      std::cout<<GridLogIRL << "Orthogonalising " <<k<<std::endl;
       orthogonalize(w,evec,k); // orthonormalise
-      std::cout<<GridLogDebug << "Orthogonalised " <<k<<std::endl;
+      std::cout<<GridLogIRL << "Orthogonalised " <<k<<std::endl;
     }
 
     if(k < Nm-1) evec[k+1] = w;
 
-    std::cout<<GridLogIRL << "Lanczos step alpha[" << k << "] = " << zalph << " beta[" << k << "] = "<<beta<<std::endl;
+    std::cout<<GridLogIRL << "alpha[" << k << "] = " << zalph << " beta[" << k << "] = "<<beta<<std::endl;
     if ( beta < tiny ) 
       std::cout<<GridLogIRL << " beta is tiny "<<beta<<std::endl;
 
-    std::cout<<GridLogDebug << "Lanczos step complete " <<k<<std::endl;
+    std::cout<<GridLogIRL << "Lanczos step complete " <<k<<std::endl;
   }
 
   void diagonalize_Eigen(std::vector<RealD>& lmd, std::vector<RealD>& lme, 
@@ -597,7 +592,7 @@ until convergence
     }  else if ( diagonalisation == IRLdiagonaliseWithEigen ) { 
       diagonalize_Eigen(lmd,lme,Nk,Nm,Qt,grid);
     } else { 
-      GRID_ASSERT(0);
+      assert(0);
     }
   }
 
@@ -687,7 +682,7 @@ void diagonalize_lapack(std::vector<RealD>& lmd,
     }
   }
 #else 
-  GRID_ASSERT(0);
+  assert(0);
 #endif
 }
 

Grid/algorithms/iterative/LocalCoherenceLanczos.h

@@ -44,7 +44,6 @@ public:
 				  int, MinRes);    // Must restart
 };
 
-//This class is the input parameter class for some testing programs
 struct LocalCoherenceLanczosParams : Serializable {
 public:
   GRID_SERIALIZABLE_CLASS_MEMBERS(LocalCoherenceLanczosParams,
@@ -68,7 +67,6 @@ public:
 template<class Fobj,class CComplex,int nbasis>
 class ProjectedHermOp : public LinearFunction<Lattice<iVector<CComplex,nbasis > > > {
 public:
-  using LinearFunction<Lattice<iVector<CComplex,nbasis > > >::operator();
   typedef iVector<CComplex,nbasis >           CoarseSiteVector;
   typedef Lattice<CoarseSiteVector>           CoarseField;
   typedef Lattice<CComplex>   CoarseScalar; // used for inner products on fine field
@@ -80,7 +78,7 @@ public:
   ProjectedHermOp(LinearOperatorBase<FineField>& linop, std::vector<FineField> & _subspace) : 
     _Linop(linop), subspace(_subspace)
   {  
-    GRID_ASSERT(subspace.size() >0);
+    assert(subspace.size() >0);
   };
 
   void operator()(const CoarseField& in, CoarseField& out) {
@@ -99,7 +97,6 @@ public:
 template<class Fobj,class CComplex,int nbasis>
 class ProjectedFunctionHermOp : public LinearFunction<Lattice<iVector<CComplex,nbasis > > > {
 public:
-  using LinearFunction<Lattice<iVector<CComplex,nbasis > > >::operator();
   typedef iVector<CComplex,nbasis >           CoarseSiteVector;
   typedef Lattice<CoarseSiteVector>           CoarseField;
   typedef Lattice<CComplex>   CoarseScalar; // used for inner products on fine field
@@ -147,23 +144,15 @@ public:
   RealD                             _coarse_relax_tol;
   std::vector<FineField>        &_subspace;
   
-  int _largestEvalIdxForReport; //The convergence of the LCL is based on the evals of the coarse grid operator, not those of the underlying fine grid operator
-                                //As a result we do not know what the eval range of the fine operator is until the very end, making tuning the Cheby bounds very difficult
-                                //To work around this issue, every restart we separately reconstruct the fine operator eval for the lowest and highest evec and print these
-                                //out alongside the evals of the coarse operator. To do so we need to know the index of the largest eval (i.e. Nstop-1)
-                                //NOTE: If largestEvalIdxForReport=-1 (default) then this is not performed
-  
   ImplicitlyRestartedLanczosSmoothedTester(LinearFunction<CoarseField>   &Poly,
 					   OperatorFunction<FineField>   &smoother,
 					   LinearOperatorBase<FineField> &Linop,
 					   std::vector<FineField>        &subspace,
-					   RealD coarse_relax_tol=5.0e3,
+					   RealD coarse_relax_tol=5.0e3) 
-					   int largestEvalIdxForReport=-1) 
     : _smoother(smoother), _Linop(Linop), _Poly(Poly), _subspace(subspace),
-      _coarse_relax_tol(coarse_relax_tol), _largestEvalIdxForReport(largestEvalIdxForReport)
+      _coarse_relax_tol(coarse_relax_tol)  
   {    };
 
-  //evalMaxApprox: approximation of largest eval of the fine Chebyshev operator (suitably wrapped by block projection)
   int TestConvergence(int j,RealD eresid,CoarseField &B, RealD &eval,RealD evalMaxApprox)
   {
     CoarseField v(B);
@@ -186,26 +175,12 @@ public:
 	     <<" |H B[i] - eval[i]B[i]|^2 / evalMaxApprox^2 " << std::setw(25) << vv
 	     <<std::endl;
 
-    if(_largestEvalIdxForReport != -1 && (j==0 || j==_largestEvalIdxForReport)){
-      std::cout<<GridLogIRL << "Estimating true eval of fine grid operator for eval idx " << j << std::endl;
-      RealD tmp_eval;
-      ReconstructEval(j,eresid,B,tmp_eval,1.0); //don't use evalMaxApprox of coarse operator! (cf below)
-    }
-    
     int conv=0;
     if( (vv<eresid*eresid) ) conv = 1;
     return conv;
   }
-
-  //This function is called at the end of the coarse grid Lanczos. It promotes the coarse eigenvector 'B' to the fine grid,
-  //applies a smoother to the result then computes the computes the *fine grid* eigenvalue (output as 'eval').
-
-  //evalMaxApprox should be the approximation of the largest eval of the fine Hermop. However when this function is called by IRL it actually passes the largest eval of the *Chebyshev* operator (as this is the max approx used for the TestConvergence above)
-  //As the largest eval of the Chebyshev is typically several orders of magnitude larger this makes the convergence test pass even when it should not.
-  //We therefore ignore evalMaxApprox here and use a value of 1.0 (note this value is already used by TestCoarse)
   int ReconstructEval(int j,RealD eresid,CoarseField &B, RealD &eval,RealD evalMaxApprox)
   {
-    evalMaxApprox = 1.0; //cf above
     GridBase *FineGrid = _subspace[0].Grid();    
     int checkerboard   = _subspace[0].Checkerboard();
     FineField fB(FineGrid);fB.Checkerboard() =checkerboard;
@@ -224,13 +199,13 @@ public:
     eval   = vnum/vden;
     fv -= eval*fB;
     RealD vv = norm2(fv) / ::pow(evalMaxApprox,2.0);
-    if ( j > nbasis ) eresid = eresid*_coarse_relax_tol;
 
     std::cout.precision(13);
     std::cout<<GridLogIRL  << "[" << std::setw(3)<<j<<"] "
 	     <<"eval = "<<std::setw(25)<< eval << " (" << eval_poly << ")"
-	     <<" |H B[i] - eval[i]B[i]|^2 / evalMaxApprox^2 " << std::setw(25) << vv << " target " << eresid*eresid
+	     <<" |H B[i] - eval[i]B[i]|^2 / evalMaxApprox^2 " << std::setw(25) << vv
 	     <<std::endl;
+    if ( j > nbasis ) eresid = eresid*_coarse_relax_tol;
     if( (vv<eresid*eresid) ) return 1;
     return 0;
   }
@@ -308,10 +283,6 @@ public:
     evals_coarse.resize(0);
   };
 
-  //The block inner product is the inner product on the fine grid locally summed over the blocks
-  //to give a Lattice<Scalar> on the coarse grid. This function orthnormalizes the fine-grid subspace
-  //vectors under the block inner product. This step must be performed after computing the fine grid
-  //eigenvectors and before computing the coarse grid eigenvectors.    
   void Orthogonalise(void ) {
     CoarseScalar InnerProd(_CoarseGrid);
     std::cout << GridLogMessage <<" Gramm-Schmidt pass 1"<<std::endl;
@@ -346,21 +317,19 @@ public:
 
   void testFine(RealD resid) 
   {
-    GRID_ASSERT(evals_fine.size() == nbasis);
+    assert(evals_fine.size() == nbasis);
-    GRID_ASSERT(subspace.size() == nbasis);
+    assert(subspace.size() == nbasis);
     PlainHermOp<FineField>    Op(_FineOp);
     ImplicitlyRestartedLanczosHermOpTester<FineField> SimpleTester(Op);
     for(int k=0;k<nbasis;k++){
-      GRID_ASSERT(SimpleTester.ReconstructEval(k,resid,subspace[k],evals_fine[k],1.0)==1);
+      assert(SimpleTester.ReconstructEval(k,resid,subspace[k],evals_fine[k],1.0)==1);
     }
   }
 
-  //While this method serves to check the coarse eigenvectors, it also recomputes the eigenvalues from the smoothed reconstructed eigenvectors
-  //hence the smoother can be tuned after running the coarse Lanczos by using a different smoother here
   void testCoarse(RealD resid,ChebyParams cheby_smooth,RealD relax) 
   {
-    GRID_ASSERT(evals_fine.size() == nbasis);
+    assert(evals_fine.size() == nbasis);
-    GRID_ASSERT(subspace.size() == nbasis);
+    assert(subspace.size() == nbasis);
     //////////////////////////////////////////////////////////////////////////////////////////////////
     // create a smoother and see if we can get a cheap convergence test and smooth inside the IRL
     //////////////////////////////////////////////////////////////////////////////////////////////////
@@ -380,7 +349,7 @@ public:
   void calcFine(ChebyParams cheby_parms,int Nstop,int Nk,int Nm,RealD resid, 
 		RealD MaxIt, RealD betastp, int MinRes)
   {
-    GRID_ASSERT(nbasis<=Nm);
+    assert(nbasis<=Nm);
     Chebyshev<FineField>      Cheby(cheby_parms);
     FunctionHermOp<FineField> ChebyOp(Cheby,_FineOp);
     PlainHermOp<FineField>    Op(_FineOp);
@@ -400,54 +369,40 @@ public:
     IRL.calc(evals_fine,subspace,src,Nconv,false);
     
     // Shrink down to number saved
-    GRID_ASSERT(Nstop>=nbasis);
+    assert(Nstop>=nbasis);
-    GRID_ASSERT(Nconv>=nbasis);
+    assert(Nconv>=nbasis);
     evals_fine.resize(nbasis);
     subspace.resize(nbasis,_FineGrid);
   }
-
-
-  //cheby_op: Parameters of the fine grid Chebyshev polynomial used for the Lanczos acceleration
-  //cheby_smooth: Parameters of a separate Chebyshev polynomial used after the Lanczos has completed to smooth out high frequency noise in the reconstructed fine grid eigenvectors prior to computing the eigenvalue
-  //relax: Reconstructed eigenvectors (post smoothing) are naturally not as precise as true eigenvectors. This factor acts as a multiplier on the stopping condition when determining whether the results satisfy the user provided stopping condition
   void calcCoarse(ChebyParams cheby_op,ChebyParams cheby_smooth,RealD relax,
 		  int Nstop, int Nk, int Nm,RealD resid, 
 		  RealD MaxIt, RealD betastp, int MinRes)
   {
-    Chebyshev<FineField>                          Cheby(cheby_op); //Chebyshev of fine operator on fine grid
+    Chebyshev<FineField>                          Cheby(cheby_op);
-    ProjectedHermOp<Fobj,CComplex,nbasis>         Op(_FineOp,subspace); //Fine operator on coarse grid with intermediate fine grid conversion
+    ProjectedHermOp<Fobj,CComplex,nbasis>         Op(_FineOp,subspace);
-    ProjectedFunctionHermOp<Fobj,CComplex,nbasis> ChebyOp (Cheby,_FineOp,subspace); //Chebyshev of fine operator on coarse grid with intermediate fine grid conversion
+    ProjectedFunctionHermOp<Fobj,CComplex,nbasis> ChebyOp (Cheby,_FineOp,subspace);
     //////////////////////////////////////////////////////////////////////////////////////////////////
     // create a smoother and see if we can get a cheap convergence test and smooth inside the IRL
     //////////////////////////////////////////////////////////////////////////////////////////////////
 
-    Chebyshev<FineField>                                           ChebySmooth(cheby_smooth); //lower order Chebyshev of fine operator on fine grid used to smooth regenerated eigenvectors
+    Chebyshev<FineField>                                           ChebySmooth(cheby_smooth);
-    ImplicitlyRestartedLanczosSmoothedTester<Fobj,CComplex,nbasis> ChebySmoothTester(ChebyOp,ChebySmooth,_FineOp,subspace,relax,Nstop-1); 
+    ImplicitlyRestartedLanczosSmoothedTester<Fobj,CComplex,nbasis> ChebySmoothTester(ChebyOp,ChebySmooth,_FineOp,subspace,relax);
 
     evals_coarse.resize(Nm);
     evec_coarse.resize(Nm,_CoarseGrid);
 
     CoarseField src(_CoarseGrid);     src=1.0; 
 
-    //Note the "tester" here is also responsible for generating the fine grid eigenvalues which are output into the "evals_coarse" array
     ImplicitlyRestartedLanczos<CoarseField> IRL(ChebyOp,ChebyOp,ChebySmoothTester,Nstop,Nk,Nm,resid,MaxIt,betastp,MinRes);
     int Nconv=0;
     IRL.calc(evals_coarse,evec_coarse,src,Nconv,false);
-    GRID_ASSERT(Nconv>=Nstop);
+    assert(Nconv>=Nstop);
     evals_coarse.resize(Nstop);
     evec_coarse.resize (Nstop,_CoarseGrid);
     for (int i=0;i<Nstop;i++){
       std::cout << i << " Coarse eval = " << evals_coarse[i]  << std::endl;
     }
   }
-
-  //Get the fine eigenvector 'i' by reconstruction
-  void getFineEvecEval(FineField &evec, RealD &eval, const int i) const{
-    blockPromote(evec_coarse[i],evec,subspace);  
-    eval = evals_coarse[i];
-  }
-    
-    
 };
 
 NAMESPACE_END(Grid);

Grid/algorithms/iterative/MinimalResidual.h

@@ -35,7 +35,7 @@ template<class Field> class MinimalResidual : public OperatorFunction<Field> {
  public:
   using OperatorFunction<Field>::operator();
 
-  bool ErrorOnNoConverge; // throw an GRID_ASSERT when the MR fails to converge.
+  bool ErrorOnNoConverge; // throw an assert when the MR fails to converge.
                           // Defaults true.
   RealD   Tolerance;
   Integer MaxIterations;
@@ -59,7 +59,7 @@ template<class Field> class MinimalResidual : public OperatorFunction<Field> {
 
     // Initial residual computation & set up
     RealD guess = norm2(psi);
-    GRID_ASSERT(std::isnan(guess) == 0);
+    assert(std::isnan(guess) == 0);
 
     RealD ssq = norm2(src);
     RealD rsq = Tolerance * Tolerance * ssq;
@@ -136,7 +136,7 @@ template<class Field> class MinimalResidual : public OperatorFunction<Field> {
         std::cout << GridLogMessage << "MR Time elapsed: Linalg  " << LinalgTimer.Elapsed() << std::endl;
 
         if (ErrorOnNoConverge)
-          GRID_ASSERT(true_residual / Tolerance < 10000.0);
+          assert(true_residual / Tolerance < 10000.0);
 
         IterationsToComplete = k;
 
@@ -148,7 +148,7 @@ template<class Field> class MinimalResidual : public OperatorFunction<Field> {
               << std::endl;
 
     if (ErrorOnNoConverge)
-      GRID_ASSERT(0);
+      assert(0);
 
     IterationsToComplete = k;
   }

Grid/algorithms/iterative/MixedPrecisionFlexibleGeneralisedMinimalResidual.h

@@ -37,7 +37,7 @@ class MixedPrecisionFlexibleGeneralisedMinimalResidual : public OperatorFunction
 
   using OperatorFunction<FieldD>::operator();
 
-  bool ErrorOnNoConverge; // Throw an GRID_ASSERT when MPFGMRES fails to converge,
+  bool ErrorOnNoConverge; // Throw an assert when MPFGMRES fails to converge,
                           // defaults to true
 
   RealD   Tolerance;
@@ -91,7 +91,7 @@ class MixedPrecisionFlexibleGeneralisedMinimalResidual : public OperatorFunction
     conformable(psi, src);
 
     RealD guess = norm2(psi);
-    GRID_ASSERT(std::isnan(guess) == 0);
+    assert(std::isnan(guess) == 0);
 
     RealD cp;
     RealD ssq = norm2(src);
@@ -150,7 +150,7 @@ class MixedPrecisionFlexibleGeneralisedMinimalResidual : public OperatorFunction
     std::cout << GridLogMessage << "MPFGMRES did NOT converge" << std::endl;
 
     if (ErrorOnNoConverge)
-      GRID_ASSERT(0);
+      assert(0);
   }
 
   RealD outerLoopBody(LinearOperatorBase<FieldD> &LinOp, const FieldD &src, FieldD &psi, RealD rsq) {
@@ -197,7 +197,7 @@ class MixedPrecisionFlexibleGeneralisedMinimalResidual : public OperatorFunction
       }
     }
 
-    GRID_ASSERT(0); // Never reached
+    assert(0); // Never reached
     return cp;
   }
 

Grid/algorithms/iterative/NormalEquations.h

@@ -33,7 +33,7 @@ NAMESPACE_BEGIN(Grid);
 ///////////////////////////////////////////////////////////////////////////////////////////////////////
 // Take a matrix and form an NE solver calling a Herm solver
 ///////////////////////////////////////////////////////////////////////////////////////////////////////
-template<class Field> class NormalEquations : public LinearFunction<Field>{
+template<class Field> class NormalEquations {
 private:
   SparseMatrixBase<Field> & _Matrix;
   OperatorFunction<Field> & _HermitianSolver;
@@ -60,33 +60,7 @@ public:
   }     
 };
 
-template<class Field> class NormalResidual : public LinearFunction<Field>{
+template<class Field> class HPDSolver {
-private:
-  SparseMatrixBase<Field> & _Matrix;
-  OperatorFunction<Field> & _HermitianSolver;
-  LinearFunction<Field>   & _Guess;
-public:
-
-  /////////////////////////////////////////////////////
-  // Wrap the usual normal equations trick
-  /////////////////////////////////////////////////////
- NormalResidual(SparseMatrixBase<Field> &Matrix, OperatorFunction<Field> &HermitianSolver,
-		 LinearFunction<Field> &Guess) 
-   :  _Matrix(Matrix), _HermitianSolver(HermitianSolver), _Guess(Guess) {}; 
-
-  void operator() (const Field &in, Field &out){
- 
-    Field res(in.Grid());
-    Field tmp(in.Grid());
-
-    MMdagLinearOperator<SparseMatrixBase<Field>,Field> MMdagOp(_Matrix);
-    _Guess(in,res);
-    _HermitianSolver(MMdagOp,in,res);  // M Mdag res = in ;
-    _Matrix.Mdag(res,out);             // out = Mdag res
-  }     
-};
-
-template<class Field> class HPDSolver : public LinearFunction<Field> {
 private:
   LinearOperatorBase<Field> & _Matrix;
   OperatorFunction<Field> & _HermitianSolver;
@@ -104,13 +78,13 @@ public:
   void operator() (const Field &in, Field &out){
  
     _Guess(in,out);
-    _HermitianSolver(_Matrix,in,out);  //M out = in
+    _HermitianSolver(_Matrix,in,out);  // Mdag M out = Mdag in
 
   }     
 };
 
 
-template<class Field> class MdagMSolver : public LinearFunction<Field> {
+template<class Field> class MdagMSolver {
 private:
   SparseMatrixBase<Field> & _Matrix;
   OperatorFunction<Field> & _HermitianSolver;

Grid/algorithms/iterative/PowerMethod.h

@@ -20,7 +20,7 @@ template<class Field> class PowerMethod
     RealD evalMaxApprox = 0.0; 
     auto src_n = src; 
     auto tmp = src; 
-    const int _MAX_ITER_EST_ = 200; 
+    const int _MAX_ITER_EST_ = 50; 
 
     for (int i=0;i<_MAX_ITER_EST_;i++) { 
       
@@ -30,17 +30,16 @@ template<class Field> class PowerMethod
       RealD vden = norm2(src_n); 
       RealD na = vnum/vden; 
       
-      std::cout << GridLogMessage << "PowerMethod: Current approximation of largest eigenvalue " << na << std::endl;
+      if ( (fabs(evalMaxApprox/na - 1.0) < 0.001) || (i==_MAX_ITER_EST_-1) ) { 
-      
+ 	evalMaxApprox = na; 
-      //      if ( (fabs(evalMaxApprox/na - 1.0) < 0.0001) || (i==_MAX_ITER_EST_-1) ) { 
+	std::cout << GridLogMessage << " Approximation of largest eigenvalue: " << evalMaxApprox << std::endl;
-	// 	evalMaxApprox = na; 
+ 	return evalMaxApprox; 
-	// 	return evalMaxApprox; 
+      } 
-      //      } 
       evalMaxApprox = na; 
       src_n = tmp;
     }
-    std::cout << GridLogMessage << " Approximation of largest eigenvalue: " << evalMaxApprox << std::endl;
+    assert(0);
-    return evalMaxApprox;
+    return 0;
   }
 };
 }

Grid/algorithms/iterative/PowerSpectrum.h

@@ -1,76 +0,0 @@
-#pragma once
-namespace Grid {
-
-class Band
-{
-  RealD lo, hi;
-public:
-  Band(RealD _lo,RealD _hi)
-  {
-    lo=_lo;
-    hi=_hi;
-  }
-  RealD operator() (RealD x){
-    if ( x>lo && x<hi ){
-      return 1.0;
-    } else {
-      return 0.0;
-    }
-  }
-};
-
-class PowerSpectrum
-{ 
- public: 
-
-  template<typename T>  static RealD normalise(T& v) 
-  {
-    RealD nn = norm2(v);
-    nn = sqrt(nn);
-    v = v * (1.0/nn);
-    return nn;
-  }
-
-  std::vector<RealD> ranges;
-  std::vector<int> order;
-  
-  PowerSpectrum(  std::vector<RealD> &bins, std::vector<int> &_order ) : ranges(bins), order(_order)  { };
-
-  template<class Field>
-  RealD operator()(LinearOperatorBase<Field> &HermOp, const Field &src) 
-  { 
-    GridBase *grid = src.Grid(); 
-    int N=ranges.size();
-    RealD hi = ranges[N-1];
-
-    RealD lo_band = 0.0;
-    RealD hi_band;
-    RealD nn=norm2(src);
-    RealD ss=0.0;
-
-    Field tmp = src;
-
-    for(int b=0;b<N;b++){
-      hi_band = ranges[b];
-      Band Notch(lo_band,hi_band);
-      
-      Chebyshev<Field> polynomial;
-      polynomial.Init(0.0,hi,order[b],Notch);
-      polynomial.JacksonSmooth();
-
-      polynomial(HermOp,src,tmp) ;
-
-      RealD p=norm2(tmp);
-      ss=ss+p;
-      std::cout << GridLogMessage << " PowerSpectrum Band["<<lo_band<<","<<hi_band<<"] power "<<norm2(tmp)/nn<<std::endl;
-      
-      lo_band=hi_band;
-    }
-    std::cout << GridLogMessage << " PowerSpectrum total power "<<ss/nn<<std::endl;
-    std::cout << GridLogMessage << " PowerSpectrum total power (unnormalised) "<<nn<<std::endl;
-
-    return 0;
-  };
-};
-  
-}

Grid/algorithms/iterative/PrecConjugateResidual.h

@@ -112,7 +112,7 @@ public:
     }
 
     std::cout<<GridLogMessage<<"PrecConjugateResidual did NOT converge"<<std::endl;
-    GRID_ASSERT(0);
+    assert(0);
   }
 };
 NAMESPACE_END(Grid);

Grid/algorithms/iterative/PrecGeneralisedConjugateResidual.h

@@ -43,7 +43,7 @@ NAMESPACE_BEGIN(Grid);
 template<class Field>
 class PrecGeneralisedConjugateResidual : public LinearFunction<Field> {
 public:                                                
-  using LinearFunction<Field>::operator();
+
   RealD   Tolerance;
   Integer MaxIterations;
   int verbose;
@@ -118,7 +118,7 @@ public:
 
     }
     GCRLogLevel<<"Variable Preconditioned GCR did not converge"<<std::endl;
-    //    GRID_ASSERT(0);
+    //    assert(0);
   }
 
   RealD GCRnStep(const Field &src, Field &psi,RealD rsq){
@@ -221,7 +221,7 @@ public:
       int northog = ((kp)>(mmax-1))?(mmax-1):(kp);  // if more than mmax done, we orthog all mmax history.
       for(int back=0;back<northog;back++){
 
-	int peri_back=(k-back)%mmax;   	  GRID_ASSERT((k-back)>=0);
+	int peri_back=(k-back)%mmax;   	  assert((k-back)>=0);
 
 	b=-real(innerProduct(q[peri_back],Az))/qq[peri_back];
 	p[peri_kp]=p[peri_kp]+b*p[peri_back];
@@ -231,7 +231,7 @@ public:
       qq[peri_kp]=norm2(q[peri_kp]); // could use axpy_norm
       LinalgTimer.Stop();
     }
-    GRID_ASSERT(0); // never reached
+    assert(0); // never reached
     return cp;
   }
 };

Grid/algorithms/iterative/PrecGeneralisedConjugateResidualNonHermitian.h

@@ -43,7 +43,7 @@ NAMESPACE_BEGIN(Grid);
 template<class Field>
 class PrecGeneralisedConjugateResidualNonHermitian : public LinearFunction<Field> {
 public:                                                
-  using LinearFunction<Field>::operator();
+
   RealD   Tolerance;
   Integer MaxIterations;
   int verbose;
@@ -74,7 +74,7 @@ public:
 
   void operator() (const Field &src, Field &psi){
 
-    //    psi=Zero();
+    psi=Zero();
     RealD cp, ssq,rsq;
     ssq=norm2(src);
     rsq=Tolerance*Tolerance*ssq;
@@ -113,14 +113,13 @@ public:
 
     }
     GCRLogLevel<<"Variable Preconditioned GCR did not converge"<<std::endl;
-    //    GRID_ASSERT(0);
+    //    assert(0);
   }
 
   RealD GCRnStep(const Field &src, Field &psi,RealD rsq){
 
     RealD cp;
-    ComplexD a, b;
+    ComplexD a, b, zAz;
-    //    ComplexD zAz;
     RealD zAAz;
     ComplexD rq;
 
@@ -147,7 +146,7 @@ public:
     //////////////////////////////////
     MatTimer.Start();
     Linop.Op(psi,Az);
-    //    zAz = innerProduct(Az,psi);
+    zAz = innerProduct(Az,psi);
     zAAz= norm2(Az);
     MatTimer.Stop();
     
@@ -171,7 +170,7 @@ public:
 
     LinalgTimer.Start();
 
-    //    zAz = innerProduct(Az,psi);
+    zAz = innerProduct(Az,psi);
     zAAz= norm2(Az);
 
     //p[0],q[0],qq[0] 
@@ -213,7 +212,7 @@ public:
       MatTimer.Start();
       Linop.Op(z,Az);
       MatTimer.Stop();
-      //      zAz = innerProduct(Az,psi);
+      zAz = innerProduct(Az,psi);
       zAAz= norm2(Az);
 
       LinalgTimer.Start();
@@ -224,7 +223,7 @@ public:
       int northog = ((kp)>(mmax-1))?(mmax-1):(kp);  // if more than mmax done, we orthog all mmax history.
       for(int back=0;back<northog;back++){
 
-	int peri_back=(k-back)%mmax;   	  GRID_ASSERT((k-back)>=0);
+	int peri_back=(k-back)%mmax;   	  assert((k-back)>=0);
 
 	b=-real(innerProduct(q[peri_back],Az))/qq[peri_back];
 	p[peri_kp]=p[peri_kp]+b*p[peri_back];
@@ -234,7 +233,7 @@ public:
       qq[peri_kp]=norm2(q[peri_kp]); // could use axpy_norm
       LinalgTimer.Stop();
     }
-    GRID_ASSERT(0); // never reached
+    assert(0); // never reached
     return cp;
   }
 };

Grid/algorithms/iterative/QuasiMinimalResidual.h

@@ -79,7 +79,7 @@ class QuasiMinimalResidual : public OperatorFunction<Field> {
 
     LinOp.Op(x,r); r = b - r;
 
-    GRID_ASSERT(normb> 0.0);
+    assert(normb> 0.0);
 
     resid = norm2(r)/normb;
     if (resid <= Tolerance) {
@@ -105,8 +105,8 @@ class QuasiMinimalResidual : public OperatorFunction<Field> {
     for (int i = 1; i <= MaxIterations; i++) {
 
       // Breakdown tests
-      GRID_ASSERT( rho != 0.0);
+      assert( rho != 0.0);
-      GRID_ASSERT( xi  != 0.0);
+      assert( xi  != 0.0);
 
       v = (1. / rho) * v_tld;
       y = (1. / rho) * y;
@@ -134,10 +134,10 @@ class QuasiMinimalResidual : public OperatorFunction<Field> {
       ep=Zep.real();
       std::cout << "Zep "<<Zep <<std::endl;
       // Complex Audit
-      GRID_ASSERT(abs(ep)>0);
+      assert(abs(ep)>0);
 
       beta = ep / delta;
-      GRID_ASSERT(abs(beta)>0);
+      assert(abs(beta)>0);
 
       v_tld = p_tld - beta * v;
       y = v_tld;
@@ -158,7 +158,7 @@ class QuasiMinimalResidual : public OperatorFunction<Field> {
       std::cout << "theta "<<theta<<std::endl;
       std::cout << "gamma "<<gamma<<std::endl;
 
-      GRID_ASSERT(abs(gamma)> 0.0);
+      assert(abs(gamma)> 0.0);
 
       eta = -eta * rho_1 * gamma* gamma / (beta * gamma_1 * gamma_1);
 
@@ -178,7 +178,7 @@ class QuasiMinimalResidual : public OperatorFunction<Field> {
       }
       std::cout << "Iteration "<<i<<" resid " << resid<<std::endl;
     }
-    GRID_ASSERT(0);
+    assert(0);
     return;                            // no convergence
   }
 #else

Grid/algorithms/iterative/SchurRedBlack.h

@@ -132,31 +132,6 @@ namespace Grid {
       (*this)(_Matrix,in,out,guess);
     }
 
-    void RedBlackSource(Matrix &_Matrix, const std::vector<Field> &in, std::vector<Field> &src_o) 
-    {
-      GridBase *grid = _Matrix.RedBlackGrid();
-      Field tmp(grid);
-      int nblock = in.size();
-      for(int b=0;b<nblock;b++){
-	RedBlackSource(_Matrix,in[b],tmp,src_o[b]);
-      }
-    }
-    // James can write his own deflated guesser
-    // with optimised code for the inner products
-    //    RedBlackSolveSplitGrid();
-    //    RedBlackSolve(_Matrix,src_o,sol_o); 
-
-    void RedBlackSolution(Matrix &_Matrix, const std::vector<Field> &in, const std::vector<Field> &sol_o, std::vector<Field> &out)
-    {
-      GridBase *grid = _Matrix.RedBlackGrid();
-      Field tmp(grid);
-      int nblock = in.size();
-      for(int b=0;b<nblock;b++) {
-	pickCheckerboard(Even,tmp,in[b]);
-	RedBlackSolution(_Matrix,sol_o[b],tmp,out[b]);
-      }
-    }
-
     template<class Guesser>
     void operator()(Matrix &_Matrix, const std::vector<Field> &in, std::vector<Field> &out,Guesser &guess) 
     {
@@ -175,29 +150,24 @@ namespace Grid {
       ////////////////////////////////////////////////
       // Prepare RedBlack source
       ////////////////////////////////////////////////
-      RedBlackSource(_Matrix,in,src_o);
+      for(int b=0;b<nblock;b++){
-	//      for(int b=0;b<nblock;b++){
+	RedBlackSource(_Matrix,in[b],tmp,src_o[b]);
-	//	RedBlackSource(_Matrix,in[b],tmp,src_o[b]);
+      }
-	//      }
-      
       ////////////////////////////////////////////////
       // Make the guesses
       ////////////////////////////////////////////////
       if ( subGuess ) guess_save.resize(nblock,grid);
 
-      
+      for(int b=0;b<nblock;b++){
-      if(useSolnAsInitGuess) {
+        if(useSolnAsInitGuess) {
-        for(int b=0;b<nblock;b++){
           pickCheckerboard(Odd, sol_o[b], out[b]);
+        } else {
+          guess(src_o[b],sol_o[b]); 
         }
-      } else {
-        guess(src_o, sol_o); 
-      }
 
-	    if ( subGuess ) { 
+	if ( subGuess ) { 
-        for(int b=0;b<nblock;b++){
+	  guess_save[b] = sol_o[b];
-          guess_save[b] = sol_o[b];
+	}
-        }
       }
       //////////////////////////////////////////////////////////////
       // Call the block solver
@@ -327,9 +297,9 @@ namespace Grid {
       /////////////////////////////////////////////////////
       // src_o = (source_o - Moe MeeInv source_e)
       /////////////////////////////////////////////////////
-      _Matrix.MooeeInv(src_e,tmp);     GRID_ASSERT(  tmp.Checkerboard() ==Even);
+      _Matrix.MooeeInv(src_e,tmp);     assert(  tmp.Checkerboard() ==Even);
-      _Matrix.Meooe   (tmp,Mtmp);      GRID_ASSERT( Mtmp.Checkerboard() ==Odd);     
+      _Matrix.Meooe   (tmp,Mtmp);      assert( Mtmp.Checkerboard() ==Odd);     
-      tmp=src_o-Mtmp;                  GRID_ASSERT(  tmp.Checkerboard() ==Odd);     
+      tmp=src_o-Mtmp;                  assert(  tmp.Checkerboard() ==Odd);     
 
       _Matrix.Mooee(tmp,src_o); // Extra factor of "m" in source from dumb choice of matrix norm.
     }
@@ -347,17 +317,17 @@ namespace Grid {
       ///////////////////////////////////////////////////
       // sol_e = M_ee^-1 * ( src_e - Meo sol_o )...
       ///////////////////////////////////////////////////
-      _Matrix.Meooe(sol_o,tmp);        GRID_ASSERT(  tmp.Checkerboard()   ==Even);
+      _Matrix.Meooe(sol_o,tmp);        assert(  tmp.Checkerboard()   ==Even);
-      src_e = src_e-tmp;               GRID_ASSERT(  src_e.Checkerboard() ==Even);
+      src_e = src_e-tmp;               assert(  src_e.Checkerboard() ==Even);
-      _Matrix.MooeeInv(src_e,sol_e);   GRID_ASSERT(  sol_e.Checkerboard() ==Even);
+      _Matrix.MooeeInv(src_e,sol_e);   assert(  sol_e.Checkerboard() ==Even);
      
-      setCheckerboard(sol,sol_e); GRID_ASSERT(  sol_e.Checkerboard() ==Even);
+      setCheckerboard(sol,sol_e); assert(  sol_e.Checkerboard() ==Even);
-      setCheckerboard(sol,sol_o); GRID_ASSERT(  sol_o.Checkerboard() ==Odd );
+      setCheckerboard(sol,sol_o); assert(  sol_o.Checkerboard() ==Odd );
     }
     virtual void RedBlackSolve   (Matrix & _Matrix,const Field &src_o, Field &sol_o)
     {
       SchurStaggeredOperator<Matrix,Field> _HermOpEO(_Matrix);
-      this->_HermitianRBSolver(_HermOpEO,src_o,sol_o);  GRID_ASSERT(sol_o.Checkerboard()==Odd);
+      this->_HermitianRBSolver(_HermOpEO,src_o,sol_o);  assert(sol_o.Checkerboard()==Odd);
     };
     virtual void RedBlackSolve   (Matrix & _Matrix,const std::vector<Field> &src_o,  std::vector<Field> &sol_o)
     {
@@ -396,13 +366,13 @@ namespace Grid {
       /////////////////////////////////////////////////////
       // src_o = Mdag * (source_o - Moe MeeInv source_e)
       /////////////////////////////////////////////////////
-      _Matrix.MooeeInv(src_e,tmp);     GRID_ASSERT(  tmp.Checkerboard() ==Even);
+      _Matrix.MooeeInv(src_e,tmp);     assert(  tmp.Checkerboard() ==Even);
-      _Matrix.Meooe   (tmp,Mtmp);      GRID_ASSERT( Mtmp.Checkerboard() ==Odd);     
+      _Matrix.Meooe   (tmp,Mtmp);      assert( Mtmp.Checkerboard() ==Odd);     
-      tmp=src_o-Mtmp;                  GRID_ASSERT(  tmp.Checkerboard() ==Odd);     
+      tmp=src_o-Mtmp;                  assert(  tmp.Checkerboard() ==Odd);     
 
       // get the right MpcDag
       SchurDiagMooeeOperator<Matrix,Field> _HermOpEO(_Matrix);
-      _HermOpEO.MpcDag(tmp,src_o);     GRID_ASSERT(src_o.Checkerboard() ==Odd);       
+      _HermOpEO.MpcDag(tmp,src_o);     assert(src_o.Checkerboard() ==Odd);       
 
     }
     virtual void RedBlackSolution(Matrix & _Matrix,const Field &sol_o, const Field &src_e,Field &sol)
@@ -416,17 +386,17 @@ namespace Grid {
       ///////////////////////////////////////////////////
       // sol_e = M_ee^-1 * ( src_e - Meo sol_o )...
       ///////////////////////////////////////////////////
-      _Matrix.Meooe(sol_o,tmp);          GRID_ASSERT(  tmp.Checkerboard()   ==Even);
+      _Matrix.Meooe(sol_o,tmp);          assert(  tmp.Checkerboard()   ==Even);
-      src_e_i = src_e-tmp;               GRID_ASSERT(  src_e_i.Checkerboard() ==Even);
+      src_e_i = src_e-tmp;               assert(  src_e_i.Checkerboard() ==Even);
-      _Matrix.MooeeInv(src_e_i,sol_e);   GRID_ASSERT(  sol_e.Checkerboard() ==Even);
+      _Matrix.MooeeInv(src_e_i,sol_e);   assert(  sol_e.Checkerboard() ==Even);
      
-      setCheckerboard(sol,sol_e); GRID_ASSERT(  sol_e.Checkerboard() ==Even);
+      setCheckerboard(sol,sol_e); assert(  sol_e.Checkerboard() ==Even);
-      setCheckerboard(sol,sol_o); GRID_ASSERT(  sol_o.Checkerboard() ==Odd );
+      setCheckerboard(sol,sol_o); assert(  sol_o.Checkerboard() ==Odd );
     }
     virtual void RedBlackSolve   (Matrix & _Matrix,const Field &src_o, Field &sol_o)
     {
       SchurDiagMooeeOperator<Matrix,Field> _HermOpEO(_Matrix);
-      this->_HermitianRBSolver(_HermOpEO,src_o,sol_o);  GRID_ASSERT(sol_o.Checkerboard()==Odd);
+      this->_HermitianRBSolver(_HermOpEO,src_o,sol_o);  assert(sol_o.Checkerboard()==Odd);
     };
     virtual void RedBlackSolve   (Matrix & _Matrix,const std::vector<Field> &src_o,  std::vector<Field> &sol_o)
     {
@@ -461,9 +431,9 @@ namespace Grid {
         /////////////////////////////////////////////////////
         // src_o = Mdag * (source_o - Moe MeeInv source_e)
         /////////////////////////////////////////////////////
-        _Matrix.MooeeInv(src_e, tmp);   GRID_ASSERT(   tmp.Checkerboard() == Even );
+        _Matrix.MooeeInv(src_e, tmp);   assert(   tmp.Checkerboard() == Even );
-        _Matrix.Meooe   (tmp, Mtmp);    GRID_ASSERT(  Mtmp.Checkerboard() == Odd  );     
+        _Matrix.Meooe   (tmp, Mtmp);    assert(  Mtmp.Checkerboard() == Odd  );     
-        src_o -= Mtmp;                  GRID_ASSERT( src_o.Checkerboard() == Odd  );     
+        src_o -= Mtmp;                  assert( src_o.Checkerboard() == Odd  );     
       }
       
       virtual void RedBlackSolution(Matrix& _Matrix, const Field& sol_o, const Field& src_e, Field& sol)
@@ -478,18 +448,18 @@ namespace Grid {
         ///////////////////////////////////////////////////
         // sol_e = M_ee^-1 * ( src_e - Meo sol_o )...
         ///////////////////////////////////////////////////
-        _Matrix.Meooe(sol_o, tmp);         GRID_ASSERT(     tmp.Checkerboard() == Even );
+        _Matrix.Meooe(sol_o, tmp);         assert(     tmp.Checkerboard() == Even );
-        src_e_i = src_e - tmp;             GRID_ASSERT( src_e_i.Checkerboard() == Even );
+        src_e_i = src_e - tmp;             assert( src_e_i.Checkerboard() == Even );
-        _Matrix.MooeeInv(src_e_i, sol_e);  GRID_ASSERT(   sol_e.Checkerboard() == Even );
+        _Matrix.MooeeInv(src_e_i, sol_e);  assert(   sol_e.Checkerboard() == Even );
        
-        setCheckerboard(sol, sol_e); GRID_ASSERT( sol_e.Checkerboard() == Even );
+        setCheckerboard(sol, sol_e); assert( sol_e.Checkerboard() == Even );
-        setCheckerboard(sol, sol_o); GRID_ASSERT( sol_o.Checkerboard() == Odd  );
+        setCheckerboard(sol, sol_o); assert( sol_o.Checkerboard() == Odd  );
       }
 
       virtual void RedBlackSolve(Matrix& _Matrix, const Field& src_o, Field& sol_o)
       {
         NonHermitianSchurDiagMooeeOperator<Matrix,Field> _OpEO(_Matrix);
-        this->_HermitianRBSolver(_OpEO, src_o, sol_o);  GRID_ASSERT(sol_o.Checkerboard() == Odd);
+        this->_HermitianRBSolver(_OpEO, src_o, sol_o);  assert(sol_o.Checkerboard() == Odd);
       }
 
       virtual void RedBlackSolve(Matrix& _Matrix, const std::vector<Field>& src_o, std::vector<Field>& sol_o)
@@ -499,87 +469,6 @@ namespace Grid {
       }
   };
 
-  ///////////////////////////////////////////////////////////////////////////////////////////////////////
-  // Site diagonal is identity, left preconditioned by Mee^inv
-  // ( 1 - Mee^inv Meo Moo^inv Moe ) phi = Mee_inv ( Mee - Meo Moo^inv Moe Mee^inv  ) phi =  Mee_inv eta
-  //
-  // Solve:
-  // ( 1 - Mee^inv Meo Moo^inv Moe )^dag ( 1 - Mee^inv Meo Moo^inv Moe ) phi = ( 1 - Mee^inv Meo Moo^inv Moe )^dag  Mee_inv eta
-  //
-  // Old notation e<->o
-  //
-  // Left precon by Moo^-1
-  //  b) (Doo^{dag} M_oo^-dag) (Moo^-1 Doo) psi_o =  [ (D_oo)^dag M_oo^-dag ] Moo^-1 L^{-1}  eta_o
-  //                                   eta_o'     = (D_oo)^dag  M_oo^-dag Moo^-1 (eta_o - Moe Mee^{-1} eta_e)
-  ///////////////////////////////////////////////////////////////////////////////////////////////////////
-  template<class Field> class SchurRedBlackDiagOneSolve : public SchurRedBlackBase<Field> {
-  public:
-    typedef CheckerBoardedSparseMatrixBase<Field> Matrix;
-
-    /////////////////////////////////////////////////////
-    // Wrap the usual normal equations Schur trick
-    /////////////////////////////////////////////////////
-  SchurRedBlackDiagOneSolve(OperatorFunction<Field> &HermitianRBSolver, const bool initSubGuess = false,
-      const bool _solnAsInitGuess = false)  
-    : SchurRedBlackBase<Field>(HermitianRBSolver,initSubGuess,_solnAsInitGuess) {};
-
-    virtual void RedBlackSource(Matrix & _Matrix,const Field &src, Field &src_e,Field &src_o)
-    {
-      GridBase *grid = _Matrix.RedBlackGrid();
-      GridBase *fgrid= _Matrix.Grid();
-
-      SchurDiagOneOperator<Matrix,Field> _HermOpEO(_Matrix);
-      
-      Field   tmp(grid);
-      Field  Mtmp(grid);
-
-      pickCheckerboard(Even,src_e,src);
-      pickCheckerboard(Odd ,src_o,src);
-    
-      /////////////////////////////////////////////////////
-      // src_o = Mpcdag *MooeeInv * (source_o - Moe MeeInv source_e)
-      /////////////////////////////////////////////////////
-      _Matrix.MooeeInv(src_e,tmp);     GRID_ASSERT(  tmp.Checkerboard() ==Even);
-      _Matrix.Meooe   (tmp,Mtmp);      GRID_ASSERT( Mtmp.Checkerboard() ==Odd);     
-      Mtmp=src_o-Mtmp;                 
-      _Matrix.MooeeInv(Mtmp,tmp);      GRID_ASSERT( tmp.Checkerboard() ==Odd);     
-      
-      // get the right MpcDag
-      _HermOpEO.MpcDag(tmp,src_o);     GRID_ASSERT(src_o.Checkerboard() ==Odd);       
-    }
-
-    virtual void RedBlackSolution(Matrix & _Matrix,const Field &sol_o, const Field &src_e,Field &sol)
-    {
-      GridBase *grid = _Matrix.RedBlackGrid();
-      GridBase *fgrid= _Matrix.Grid();
-
-      Field   tmp(grid);
-      Field   sol_e(grid);
-
-
-      ///////////////////////////////////////////////////
-      // sol_e = M_ee^-1 * ( src_e - Meo sol_o )...
-      ///////////////////////////////////////////////////
-      _Matrix.Meooe(sol_o,tmp);    GRID_ASSERT(  tmp.Checkerboard()   ==Even);
-      tmp = src_e-tmp;             GRID_ASSERT(  src_e.Checkerboard() ==Even);
-      _Matrix.MooeeInv(tmp,sol_e); GRID_ASSERT(  sol_e.Checkerboard() ==Even);
-     
-      setCheckerboard(sol,sol_e);  GRID_ASSERT(  sol_e.Checkerboard() ==Even);
-      setCheckerboard(sol,sol_o);  GRID_ASSERT(  sol_o.Checkerboard() ==Odd );
-    };
-
-    virtual void RedBlackSolve   (Matrix & _Matrix,const Field &src_o, Field &sol_o)
-    {
-      SchurDiagOneOperator<Matrix,Field> _HermOpEO(_Matrix);
-      this->_HermitianRBSolver(_HermOpEO,src_o,sol_o);
-    };
-    virtual void RedBlackSolve   (Matrix & _Matrix,const std::vector<Field> &src_o,  std::vector<Field> &sol_o)
-    {
-      SchurDiagOneOperator<Matrix,Field> _HermOpEO(_Matrix);
-      this->_HermitianRBSolver(_HermOpEO,src_o,sol_o); 
-    }
-  };
-
   ///////////////////////////////////////////////////////////////////////////////////////////////////////
   // Site diagonal is identity, right preconditioned by Mee^inv
   // ( 1 - Meo Moo^inv Moe Mee^inv  ) phi =( 1 - Meo Moo^inv Moe Mee^inv  ) Mee psi =  = eta  = eta
@@ -612,12 +501,12 @@ namespace Grid {
       /////////////////////////////////////////////////////
       // src_o = Mdag * (source_o - Moe MeeInv source_e)
       /////////////////////////////////////////////////////
-      _Matrix.MooeeInv(src_e,tmp);     GRID_ASSERT(  tmp.Checkerboard() ==Even);
+      _Matrix.MooeeInv(src_e,tmp);     assert(  tmp.Checkerboard() ==Even);
-      _Matrix.Meooe   (tmp,Mtmp);      GRID_ASSERT( Mtmp.Checkerboard() ==Odd);     
+      _Matrix.Meooe   (tmp,Mtmp);      assert( Mtmp.Checkerboard() ==Odd);     
-      tmp=src_o-Mtmp;                  GRID_ASSERT(  tmp.Checkerboard() ==Odd);     
+      tmp=src_o-Mtmp;                  assert(  tmp.Checkerboard() ==Odd);     
 
       // get the right MpcDag
-      _HermOpEO.MpcDag(tmp,src_o);     GRID_ASSERT(src_o.Checkerboard() ==Odd);       
+      _HermOpEO.MpcDag(tmp,src_o);     assert(src_o.Checkerboard() ==Odd);       
     }
 
     virtual void RedBlackSolution(Matrix & _Matrix,const Field &sol_o, const Field &src_e,Field &sol)
@@ -638,12 +527,12 @@ namespace Grid {
       ///////////////////////////////////////////////////
       // sol_e = M_ee^-1 * ( src_e - Meo sol_o )...
       ///////////////////////////////////////////////////
-      _Matrix.Meooe(sol_o_i,tmp);    GRID_ASSERT(  tmp.Checkerboard()   ==Even);
+      _Matrix.Meooe(sol_o_i,tmp);    assert(  tmp.Checkerboard()   ==Even);
-      tmp = src_e-tmp;               GRID_ASSERT(  src_e.Checkerboard() ==Even);
+      tmp = src_e-tmp;               assert(  src_e.Checkerboard() ==Even);
-      _Matrix.MooeeInv(tmp,sol_e);   GRID_ASSERT(  sol_e.Checkerboard() ==Even);
+      _Matrix.MooeeInv(tmp,sol_e);   assert(  sol_e.Checkerboard() ==Even);
      
-      setCheckerboard(sol,sol_e);    GRID_ASSERT(  sol_e.Checkerboard() ==Even);
+      setCheckerboard(sol,sol_e);    assert(  sol_e.Checkerboard() ==Even);
-      setCheckerboard(sol,sol_o_i);  GRID_ASSERT(  sol_o_i.Checkerboard() ==Odd );
+      setCheckerboard(sol,sol_o_i);  assert(  sol_o_i.Checkerboard() ==Odd );
     };
 
     virtual void RedBlackSolve   (Matrix & _Matrix,const Field &src_o, Field &sol_o)
@@ -684,9 +573,9 @@ namespace Grid {
         /////////////////////////////////////////////////////
         // src_o = Mdag * (source_o - Moe MeeInv source_e)
         /////////////////////////////////////////////////////
-        _Matrix.MooeeInv(src_e, tmp);   GRID_ASSERT(   tmp.Checkerboard() == Even );
+        _Matrix.MooeeInv(src_e, tmp);   assert(   tmp.Checkerboard() == Even );
-        _Matrix.Meooe   (tmp, Mtmp);    GRID_ASSERT(  Mtmp.Checkerboard() == Odd  );     
+        _Matrix.Meooe   (tmp, Mtmp);    assert(  Mtmp.Checkerboard() == Odd  );     
-        src_o -= Mtmp;                  GRID_ASSERT( src_o.Checkerboard() == Odd  );     
+        src_o -= Mtmp;                  assert( src_o.Checkerboard() == Odd  );     
       }
 
       virtual void RedBlackSolution(Matrix& _Matrix, const Field& sol_o, const Field& src_e, Field& sol)
@@ -707,12 +596,12 @@ namespace Grid {
         ///////////////////////////////////////////////////
         // sol_e = M_ee^-1 * ( src_e - Meo sol_o )...
         ///////////////////////////////////////////////////
-        _Matrix.Meooe(sol_o_i, tmp);    GRID_ASSERT(   tmp.Checkerboard() == Even );
+        _Matrix.Meooe(sol_o_i, tmp);    assert(   tmp.Checkerboard() == Even );
-        tmp = src_e - tmp;              GRID_ASSERT( src_e.Checkerboard() == Even );
+        tmp = src_e - tmp;              assert( src_e.Checkerboard() == Even );
-        _Matrix.MooeeInv(tmp, sol_e);   GRID_ASSERT( sol_e.Checkerboard() == Even );
+        _Matrix.MooeeInv(tmp, sol_e);   assert( sol_e.Checkerboard() == Even );
        
-        setCheckerboard(sol, sol_e);    GRID_ASSERT(   sol_e.Checkerboard() == Even );
+        setCheckerboard(sol, sol_e);    assert(   sol_e.Checkerboard() == Even );
-        setCheckerboard(sol, sol_o_i);  GRID_ASSERT( sol_o_i.Checkerboard() == Odd  );
+        setCheckerboard(sol, sol_o_i);  assert( sol_o_i.Checkerboard() == Odd  );
       };
 
       virtual void RedBlackSolve(Matrix& _Matrix, const Field& src_o, Field& sol_o)

Grid/algorithms/multigrid/Aggregates.h

@@ -1,608 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/Aggregates.h
-
-    Copyright (C) 2015
-
-Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
-Author: Peter Boyle <paboyle@ph.ed.ac.uk>
-Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
-Author: paboyle <paboyle@ph.ed.ac.uk>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-#include <Grid/algorithms/iterative/PrecGeneralisedConjugateResidualNonHermitian.h>
-
-NAMESPACE_BEGIN(Grid);
-
-inline RealD AggregatePowerLaw(RealD x)
-{
-  //  return std::pow(x,-4);
-  //  return std::pow(x,-3);
-  return std::pow(x,-5);
-}
-
-template<class Fobj,class CComplex,int nbasis>
-class Aggregation {
-public:
-  constexpr int Nbasis(void) { return nbasis; };
-  
-  typedef iVector<CComplex,nbasis >             siteVector;
-  typedef Lattice<siteVector>                 CoarseVector;
-  typedef Lattice<iMatrix<CComplex,nbasis > > CoarseMatrix;
-
-  typedef Lattice< CComplex >   CoarseScalar; // used for inner products on fine field
-  typedef Lattice<Fobj >        FineField;
-
-  GridBase *CoarseGrid;
-  GridBase *FineGrid;
-  std::vector<Lattice<Fobj> > subspace;
-  int checkerboard;
-  int Checkerboard(void){return checkerboard;}
-  Aggregation(GridBase *_CoarseGrid,GridBase *_FineGrid,int _checkerboard) : 
-    CoarseGrid(_CoarseGrid),
-    FineGrid(_FineGrid),
-    subspace(nbasis,_FineGrid),
-    checkerboard(_checkerboard)
-  {
-  };
-  
-  
-  void Orthogonalise(void){
-    CoarseScalar InnerProd(CoarseGrid); 
-    //    std::cout << GridLogMessage <<" Block Gramm-Schmidt pass 1"<<std::endl;
-    blockOrthogonalise(InnerProd,subspace);
-  } 
-  void ProjectToSubspace(CoarseVector &CoarseVec,const FineField &FineVec){
-    blockProject(CoarseVec,FineVec,subspace);
-  }
-  void PromoteFromSubspace(const CoarseVector &CoarseVec,FineField &FineVec){
-    FineVec.Checkerboard() = subspace[0].Checkerboard();
-    blockPromote(CoarseVec,FineVec,subspace);
-  }
-
-  virtual void CreateSubspaceRandom(GridParallelRNG  &RNG) {
-    int nn=nbasis;
-    RealD scale;
-    FineField noise(FineGrid);
-    for(int b=0;b<nn;b++){
-      subspace[b] = Zero();
-      gaussian(RNG,noise);
-      scale = std::pow(norm2(noise),-0.5); 
-      noise=noise*scale;
-      subspace[b] = noise;
-    }
-  }
-  virtual void CreateSubspace(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,int nn=nbasis)
-  {
-
-    RealD scale;
-
-    ConjugateGradient<FineField> CG(1.0e-3,400,false);
-    FineField noise(FineGrid);
-    FineField Mn(FineGrid);
-
-    for(int b=0;b<nn;b++){
-      
-      subspace[b] = Zero();
-      gaussian(RNG,noise);
-      scale = std::pow(norm2(noise),-0.5); 
-      noise=noise*scale;
-      
-      hermop.Op(noise,Mn); std::cout<<GridLogMessage << "noise   ["<<b<<"] <n|MdagM|n> "<<norm2(Mn)<<std::endl;
-
-      for(int i=0;i<4;i++){
-
-	CG(hermop,noise,subspace[b]);
-
-	noise = subspace[b];
-	scale = std::pow(norm2(noise),-0.5); 
-	noise=noise*scale;
-
-      }
-
-      hermop.Op(noise,Mn); std::cout<<GridLogMessage << "filtered["<<b<<"] <f|MdagM|f> "<<norm2(Mn)<<std::endl;
-      subspace[b]   = noise;
-
-    }
-  }
-
-  virtual void CreateSubspaceGCR(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &DiracOp,int nn=nbasis)
-  {
-    RealD scale;
-
-    TrivialPrecon<FineField> simple_fine;
-    PrecGeneralisedConjugateResidualNonHermitian<FineField> GCR(0.001,30,DiracOp,simple_fine,12,12);
-    FineField noise(FineGrid);
-    FineField src(FineGrid);
-    FineField guess(FineGrid);
-    FineField Mn(FineGrid);
-
-    for(int b=0;b<nn;b++){
-      
-      subspace[b] = Zero();
-      gaussian(RNG,noise);
-      scale = std::pow(norm2(noise),-0.5); 
-      noise=noise*scale;
-      
-      DiracOp.Op(noise,Mn); std::cout<<GridLogMessage << "noise   ["<<b<<"] <n|Op|n> "<<innerProduct(noise,Mn)<<std::endl;
-
-      for(int i=0;i<2;i++){
-	//  void operator() (const Field &src, Field &psi){
-#if 1
-	std::cout << GridLogMessage << " inverting on noise "<<std::endl;
-	src = noise;
-	guess=Zero();
-	GCR(src,guess);
-	subspace[b] = guess;
-#else
-	std::cout << GridLogMessage << " inverting on zero "<<std::endl;
-	src=Zero();
-	guess = noise;
-	GCR(src,guess);
-	subspace[b] = guess;
-#endif
-	noise = subspace[b];
-	scale = std::pow(norm2(noise),-0.5); 
-	noise=noise*scale;
-
-      }
-
-      DiracOp.Op(noise,Mn); std::cout<<GridLogMessage << "filtered["<<b<<"] <f|Op|f> "<<innerProduct(noise,Mn)<<std::endl;
-      subspace[b]   = noise;
-
-    }
-  }
-
-  ////////////////////////////////////////////////////////////////////////////////////////////////
-  // World of possibilities here. But have tried quite a lot of experiments (250+ jobs run on Summit)
-  // and this is the best I found
-  ////////////////////////////////////////////////////////////////////////////////////////////////
-
-  virtual void CreateSubspaceChebyshev(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,
-				       int nn,
-				       double hi,
-				       double lo,
-				       int orderfilter,
-				       int ordermin,
-				       int orderstep,
-				       double filterlo
-				       ) {
-
-    RealD scale;
-
-    FineField noise(FineGrid);
-    FineField Mn(FineGrid);
-    FineField tmp(FineGrid);
-
-    // New normalised noise
-    gaussian(RNG,noise);
-    scale = std::pow(norm2(noise),-0.5); 
-    noise=noise*scale;
-
-    std::cout << GridLogMessage<<" Chebyshev subspace pass-1 : ord "<<orderfilter<<" ["<<lo<<","<<hi<<"]"<<std::endl;
-    std::cout << GridLogMessage<<" Chebyshev subspace pass-2 : nbasis"<<nn<<" min "
-	      <<ordermin<<" step "<<orderstep
-	      <<" lo"<<filterlo<<std::endl;
-
-    // Initial matrix element
-    hermop.Op(noise,Mn); std::cout<<GridLogMessage << "noise <n|MdagM|n> "<<norm2(Mn)<<std::endl;
-
-    int b =0;
-    {
-      ComplexD ip;
-      // Filter
-      Chebyshev<FineField> Cheb(lo,hi,orderfilter);
-      Cheb(hermop,noise,Mn);
-      // normalise
-      scale = std::pow(norm2(Mn),-0.5); 	Mn=Mn*scale;
-      subspace[b]   = Mn;
-
-      hermop.Op(Mn,tmp);
-      ip= innerProduct(Mn,tmp); 
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|Op|n> "<<norm2(tmp)<<" "<<ip<<std::endl;
-
-      hermop.AdjOp(Mn,tmp); 
-      ip = innerProduct(Mn,tmp); 
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|AdjOp|n> "<<norm2(tmp)<<" "<<ip<<std::endl;
-      b++;
-    }
-
-    // Generate a full sequence of Chebyshevs
-    {
-      lo=filterlo;
-      noise=Mn;
-
-      FineField T0(FineGrid); T0 = noise;  
-      FineField T1(FineGrid); 
-      FineField T2(FineGrid);
-      FineField y(FineGrid);
-      
-      FineField *Tnm = &T0;
-      FineField *Tn  = &T1;
-      FineField *Tnp = &T2;
-
-      // Tn=T1 = (xscale M + mscale)in
-      RealD xscale = 2.0/(hi-lo);
-      RealD mscale = -(hi+lo)/(hi-lo);
-      hermop.HermOp(T0,y);
-      T1=y*xscale+noise*mscale;
-
-      for(int n=2;n<=ordermin+orderstep*(nn-2);n++){
-	
-	hermop.HermOp(*Tn,y);
-
-	autoView( y_v , y, AcceleratorWrite);
-	autoView( Tn_v , (*Tn), AcceleratorWrite);
-	autoView( Tnp_v , (*Tnp), AcceleratorWrite);
-	autoView( Tnm_v , (*Tnm), AcceleratorWrite);
-	const int Nsimd = CComplex::Nsimd();
-	accelerator_for(ss, FineGrid->oSites(), Nsimd, {
-	  coalescedWrite(y_v[ss],xscale*y_v(ss)+mscale*Tn_v(ss));
-	  coalescedWrite(Tnp_v[ss],2.0*y_v(ss)-Tnm_v(ss));
-        });
-
-	// Possible more fine grained control is needed than a linear sweep,
-	// but huge productivity gain if this is simple algorithm and not a tunable
-	int m =1;
-	if ( n>=ordermin ) m=n-ordermin;
-	if ( (m%orderstep)==0 ) { 
-	  Mn=*Tnp;
-	  scale = std::pow(norm2(Mn),-0.5);         Mn=Mn*scale;
-	  subspace[b] = Mn;
-
-
-	  ComplexD ip;
-
-	  hermop.Op(Mn,tmp);
-	  ip= innerProduct(Mn,tmp); 
-	  std::cout<<GridLogMessage << "filt ["<<b<<"] <n|Op|n> "<<norm2(tmp)<<" "<<ip<<std::endl;
-
-	  hermop.AdjOp(Mn,tmp); 
-	  ip = innerProduct(Mn,tmp); 
-	  std::cout<<GridLogMessage << "filt ["<<b<<"] <n|AdjOp|n> "<<norm2(tmp)<<" "<<ip<<std::endl;
-	  
-	  b++;
-	}
-
-	// Cycle pointers to avoid copies
-	FineField *swizzle = Tnm;
-	Tnm    =Tn;
-	Tn     =Tnp;
-	Tnp    =swizzle;
-	  
-      }
-    }
-    GRID_ASSERT(b==nn);
-  }
-
-
-  virtual void CreateSubspacePolyCheby(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,
-				       int nn,
-				       double hi,
-				       double lo1,
-				       int orderfilter,
-				       double lo2,
-				       int orderstep)
-  {
-    RealD scale;
-
-    FineField noise(FineGrid);
-    FineField Mn(FineGrid);
-    FineField tmp(FineGrid);
-
-    // New normalised noise
-    gaussian(RNG,noise);
-    scale = std::pow(norm2(noise),-0.5); 
-    noise=noise*scale;
-
-    std::cout << GridLogMessage<<" CreateSubspacePolyCheby "<<std::endl;
-    // Initial matrix element
-    hermop.Op(noise,Mn);
-    std::cout<<GridLogMessage << "noise <n|MdagM|n> "<<norm2(Mn)<<std::endl;
-
-    int b =0;
-    {
-      // Filter
-      std::cout << GridLogMessage << "Cheby "<<lo1<<","<<hi<<" "<<orderstep<<std::endl;
-      Chebyshev<FineField> Cheb(lo1,hi,orderfilter);
-      Cheb(hermop,noise,Mn);
-      // normalise
-      scale = std::pow(norm2(Mn),-0.5); 	Mn=Mn*scale;
-      subspace[b]   = Mn;
-      hermop.Op(Mn,tmp); 
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|n> "<<norm2(Mn)<<std::endl;
-    }
-
-    // Generate a full sequence of Chebyshevs
-    for(int n=1;n<nn;n++){
-      std::cout << GridLogMessage << "Cheby "<<lo2<<","<<hi<<" "<<orderstep<<std::endl;
-      Chebyshev<FineField> Cheb(lo2,hi,orderstep);
-      Cheb(hermop,subspace[n-1],Mn);
-
-      for(int m=0;m<n;m++){
-	ComplexD c = innerProduct(subspace[m],Mn);
-	Mn = Mn - c*subspace[m];
-      }
-      
-      // normalise
-      scale = std::pow(norm2(Mn),-0.5);
-      Mn=Mn*scale;
-      
-      subspace[n]=Mn;
-      
-      hermop.Op(Mn,tmp); 
-      std::cout<<GridLogMessage << "filt ["<<n<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-      std::cout<<GridLogMessage << "filt ["<<n<<"] <n|n> "<<norm2(Mn)<<std::endl;
-
-    }
-  }
-
-  virtual void CreateSubspaceChebyshev(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,
-				       int nn,
-				       double hi,
-				       double lo,
-				       int orderfilter
-				       ) {
-
-    RealD scale;
-
-    FineField noise(FineGrid);
-    FineField Mn(FineGrid);
-    FineField tmp(FineGrid);
-
-    // New normalised noise
-    std::cout << GridLogMessage<<" Chebyshev subspace pure noise : ord "<<orderfilter<<" ["<<lo<<","<<hi<<"]"<<std::endl;
-    std::cout << GridLogMessage<<" Chebyshev subspace pure noise  : nbasis "<<nn<<std::endl;
-
-
-    for(int b =0;b<nbasis;b++)
-    {
-      gaussian(RNG,noise);
-      scale = std::pow(norm2(noise),-0.5); 
-      noise=noise*scale;
-
-      // Initial matrix element
-      hermop.Op(noise,Mn);
-      if(b==0) std::cout<<GridLogMessage << "noise <n|MdagM|n> "<<norm2(Mn)<<std::endl;
-
-      // Filter
-      Chebyshev<FineField> Cheb(lo,hi,orderfilter);
-      Cheb(hermop,noise,Mn);
-      scale = std::pow(norm2(Mn),-0.5); 	Mn=Mn*scale;
-
-      // Refine
-      Chebyshev<FineField> PowerLaw(lo,hi,1000,AggregatePowerLaw);
-      noise = Mn;
-      PowerLaw(hermop,noise,Mn);
-      scale = std::pow(norm2(Mn),-0.5); 	Mn=Mn*scale;
-
-      // normalise
-      subspace[b]   = Mn;
-      hermop.Op(Mn,tmp); 
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-    }
-
-  }
-
-  virtual void CreateSubspaceChebyshevPowerLaw(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,
-					       int nn,
-					       double hi,
-					       int orderfilter
-					       ) {
-
-    RealD scale;
-
-    FineField noise(FineGrid);
-    FineField Mn(FineGrid);
-    FineField tmp(FineGrid);
-
-    // New normalised noise
-    std::cout << GridLogMessage<<" Chebyshev subspace pure noise : ord "<<orderfilter<<" [0,"<<hi<<"]"<<std::endl;
-    std::cout << GridLogMessage<<" Chebyshev subspace pure noise  : nbasis "<<nn<<std::endl;
-
-    for(int b =0;b<nbasis;b++)
-    {
-      gaussian(RNG,noise);
-      scale = std::pow(norm2(noise),-0.5); 
-      noise=noise*scale;
-
-      // Initial matrix element
-      hermop.Op(noise,Mn);
-      if(b==0) std::cout<<GridLogMessage << "noise <n|MdagM|n> "<<norm2(Mn)<<std::endl;
-      // Filter
-      Chebyshev<FineField> Cheb(0.0,hi,orderfilter,AggregatePowerLaw);
-      Cheb(hermop,noise,Mn);
-      // normalise
-      scale = std::pow(norm2(Mn),-0.5); 	Mn=Mn*scale;
-      subspace[b]   = Mn;
-      hermop.Op(Mn,tmp); 
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-    }
-
-  }
-  virtual void CreateSubspaceChebyshevNew(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,
-					  double hi
-					  ) {
-
-    RealD scale;
-
-    FineField noise(FineGrid);
-    FineField Mn(FineGrid);
-    FineField tmp(FineGrid);
-
-    // New normalised noise
-    for(int b =0;b<nbasis;b++)
-    {
-      gaussian(RNG,noise);
-      scale = std::pow(norm2(noise),-0.5); 
-      noise=noise*scale;
-
-      // Initial matrix element
-      hermop.Op(noise,Mn);
-      if(b==0) std::cout<<GridLogMessage << "noise <n|MdagM|n> "<<norm2(Mn)<<std::endl;
-      // Filter
-      //#opt2(x) =  acheb(x,3,90,300)* acheb(x,1,90,50) * acheb(x,0.5,90,200) * acheb(x,0.05,90,400) * acheb(x,0.01,90,1500)
-      /*266
-      Chebyshev<FineField> Cheb1(3.0,hi,300);
-      Chebyshev<FineField> Cheb2(1.0,hi,50);
-      Chebyshev<FineField> Cheb3(0.5,hi,300);
-      Chebyshev<FineField> Cheb4(0.05,hi,500);
-      Chebyshev<FineField> Cheb5(0.01,hi,2000);
-      */
-      /* 242 */
-      /*
-      Chebyshev<FineField> Cheb3(0.1,hi,300);
-      Chebyshev<FineField> Cheb2(0.02,hi,1000);
-      Chebyshev<FineField> Cheb1(0.003,hi,2000);
-      8?
-      */
-      /* How many??
-      */
-      Chebyshev<FineField> Cheb2(0.001,hi,2500); // 169 iters on HDCG after refine
-      Chebyshev<FineField> Cheb1(0.02,hi,600);
-
-      //      Chebyshev<FineField> Cheb2(0.001,hi,1500);
-      //      Chebyshev<FineField> Cheb1(0.02,hi,600);
-      Cheb1(hermop,noise,Mn); scale = std::pow(norm2(Mn),-0.5); 	noise=Mn*scale;
-      hermop.Op(noise,tmp); std::cout<<GridLogMessage << "Cheb1 <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-      Cheb2(hermop,noise,Mn); scale = std::pow(norm2(Mn),-0.5); 	noise=Mn*scale;
-      hermop.Op(noise,tmp); std::cout<<GridLogMessage << "Cheb2 <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-      //      Cheb3(hermop,noise,Mn); scale = std::pow(norm2(Mn),-0.5); 	noise=Mn*scale;
-      //      hermop.Op(noise,tmp); std::cout<<GridLogMessage << "Cheb3 <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-      //      Cheb4(hermop,noise,Mn); scale = std::pow(norm2(Mn),-0.5); 	noise=Mn*scale;
-      //      hermop.Op(noise,tmp); std::cout<<GridLogMessage << "Cheb4 <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-      //      Cheb5(hermop,noise,Mn); scale = std::pow(norm2(Mn),-0.5); 	noise=Mn*scale;
-      //      hermop.Op(noise,tmp); std::cout<<GridLogMessage << "Cheb5 <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-      subspace[b]   = noise;
-      hermop.Op(subspace[b],tmp); 
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<< " norm " << norm2(noise)<<std::endl;
-    }
-
-  }
-
-  virtual void CreateSubspaceMultishift(GridParallelRNG  &RNG,LinearOperatorBase<FineField> &hermop,
-					double Lo,double tol,int maxit)
-  {
-
-    RealD scale;
-
-    FineField noise(FineGrid);
-    FineField Mn(FineGrid);
-    FineField tmp(FineGrid);
-
-    // New normalised noise
-    std::cout << GridLogMessage<<" Multishift subspace : Lo "<<Lo<<std::endl;
-
-    // Filter
-    // [ 1/6(x+Lo)  - 1/2(x+2Lo) + 1/2(x+3Lo)  -1/6(x+4Lo) = Lo^3 /[ (x+1Lo)(x+2Lo)(x+3Lo)(x+4Lo) ]
-    //
-    // 1/(x+Lo)  - 1/(x+2 Lo)
-    double epsilon      = Lo/3;
-    std::vector<RealD> alpha({1.0/6.0,-1.0/2.0,1.0/2.0,-1.0/6.0});
-    std::vector<RealD> shifts({Lo,Lo+epsilon,Lo+2*epsilon,Lo+3*epsilon});
-    std::vector<RealD> tols({tol,tol,tol,tol});
-    std::cout << "sizes "<<alpha.size()<<" "<<shifts.size()<<" "<<tols.size()<<std::endl;
-
-    MultiShiftFunction msf(4,0.0,95.0);
-    std::cout << "msf constructed "<<std::endl;
-    msf.poles=shifts;
-    msf.residues=alpha;
-    msf.tolerances=tols;
-    msf.norm=0.0;
-    msf.order=alpha.size();
-    ConjugateGradientMultiShift<FineField> MSCG(maxit,msf);
-    
-    for(int b =0;b<nbasis;b++)
-    {
-      gaussian(RNG,noise);
-      scale = std::pow(norm2(noise),-0.5); 
-      noise=noise*scale;
-
-      // Initial matrix element
-      hermop.Op(noise,Mn);
-      if(b==0) std::cout<<GridLogMessage << "noise <n|MdagM|n> "<<norm2(Mn)<<std::endl;
-
-      MSCG(hermop,noise,Mn);
-      scale = std::pow(norm2(Mn),-0.5); 	Mn=Mn*scale;
-      subspace[b]   = Mn;
-      hermop.Op(Mn,tmp); 
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-
-    }
-
-  }
-  virtual void RefineSubspace(LinearOperatorBase<FineField> &hermop,
-			      double Lo,double tol,int maxit)
-  {
-    FineField tmp(FineGrid);
-    for(int b =0;b<nbasis;b++)
-    {
-      ConjugateGradient<FineField>  CGsloppy(tol,maxit,false);
-      ShiftedHermOpLinearOperator<FineField> ShiftedFineHermOp(hermop,Lo);
-      tmp=Zero();
-      CGsloppy(hermop,subspace[b],tmp);
-      RealD scale = std::pow(norm2(tmp),-0.5); 	tmp=tmp*scale;
-      subspace[b]=tmp;
-      hermop.Op(subspace[b],tmp);
-      std::cout<<GridLogMessage << "filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-    }
-  }
-  virtual void RefineSubspaceHDCG(LinearOperatorBase<FineField> &hermop,
-				  TwoLevelADEF2mrhs<FineField,CoarseVector> & theHDCG,
-				  int nrhs)
-  {
-    std::vector<FineField> src_mrhs(nrhs,FineGrid);
-    std::vector<FineField> res_mrhs(nrhs,FineGrid);
-    FineField tmp(FineGrid);
-    for(int b =0;b<nbasis;b+=nrhs)
-    {
-      tmp = subspace[b];
-      RealD scale = std::pow(norm2(tmp),-0.5); 	tmp=tmp*scale;
-      subspace[b] =tmp;
-      hermop.Op(subspace[b],tmp);
-      std::cout<<GridLogMessage << "before filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-
-      for(int r=0;r<MIN(nbasis-b,nrhs);r++){
-	src_mrhs[r] = subspace[b+r];
-      }
-      for(int r=0;r<nrhs;r++){
-	res_mrhs[r] = Zero();
-      }
-      theHDCG(src_mrhs,res_mrhs);
-
-      for(int r=0;r<MIN(nbasis-b,nrhs);r++){
-	tmp = res_mrhs[r];
-	RealD scale = std::pow(norm2(tmp),-0.5); tmp=tmp*scale;
-	subspace[b+r]=tmp;
-      }
-      hermop.Op(subspace[b],tmp);
-      std::cout<<GridLogMessage << "after filt ["<<b<<"] <n|MdagM|n> "<<norm2(tmp)<<std::endl;
-    }
-  }
-
-  
-  
-};
-NAMESPACE_END(Grid);
-

Grid/algorithms/multigrid/GeneralCoarsenedMatrix.h

@@ -1,629 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/GeneralCoarsenedMatrix.h
-
-    Copyright (C) 2015
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-#include <Grid/qcd/QCD.h> // needed for Dagger(Yes|No), Inverse(Yes|No)
-
-#include <Grid/lattice/PaddedCell.h>
-#include <Grid/stencil/GeneralLocalStencil.h>
-
-NAMESPACE_BEGIN(Grid);
-
-// Fine Object == (per site) type of fine field
-// nbasis      == number of deflation vectors
-template<class Fobj,class CComplex,int nbasis>
-class GeneralCoarsenedMatrix : public SparseMatrixBase<Lattice<iVector<CComplex,nbasis > > >  {
-public:
-
-  typedef GeneralCoarsenedMatrix<Fobj,CComplex,nbasis> GeneralCoarseOp;
-  typedef iVector<CComplex,nbasis >           siteVector;
-  typedef iMatrix<CComplex,nbasis >           siteMatrix;
-  typedef Lattice<iScalar<CComplex> >         CoarseComplexField;
-  typedef Lattice<siteVector>                 CoarseVector;
-  typedef Lattice<iMatrix<CComplex,nbasis > > CoarseMatrix;
-  typedef iMatrix<CComplex,nbasis >  Cobj;
-  typedef iVector<CComplex,nbasis >  Cvec;
-  typedef Lattice< CComplex >   CoarseScalar; // used for inner products on fine field
-  typedef Lattice<Fobj >        FineField;
-  typedef Lattice<CComplex >    FineComplexField;
-  typedef CoarseVector Field;
-  ////////////////////
-  // Data members
-  ////////////////////
-  int hermitian;
-  GridBase      *       _FineGrid; 
-  GridCartesian *       _CoarseGrid; 
-  NonLocalStencilGeometry &geom;
-  PaddedCell Cell;
-  GeneralLocalStencil Stencil;
-  
-  std::vector<CoarseMatrix> _A;
-  std::vector<CoarseMatrix> _Adag;
-  std::vector<CoarseVector> MultTemporaries;
-
-  ///////////////////////
-  // Interface
-  ///////////////////////
-  GridBase      * Grid(void)           { return _CoarseGrid; };   // this is all the linalg routines need to know
-  GridBase      * FineGrid(void)       { return _FineGrid; };   // this is all the linalg routines need to know
-  GridCartesian * CoarseGrid(void)     { return _CoarseGrid; };   // this is all the linalg routines need to know
-
-  /*  void ShiftMatrix(RealD shift)
-  {
-    int Nd=_FineGrid->Nd(); 
-    Coordinate zero_shift(Nd,0);
-    for(int p=0;p<geom.npoint;p++){
-      if ( zero_shift==geom.shifts[p] ) {
-	_A[p] = _A[p]+shift;
-	//	_Adag[p] = _Adag[p]+shift;
-      }
-    }    
-  }
-  void ProjectNearestNeighbour(RealD shift, GeneralCoarseOp &CopyMe)
-  {
-    int nfound=0;
-    std::cout << GridLogMessage <<"GeneralCoarsenedMatrix::ProjectNearestNeighbour "<< CopyMe._A[0].Grid()<<std::endl;
-    for(int p=0;p<geom.npoint;p++){
-      for(int pp=0;pp<CopyMe.geom.npoint;pp++){
- 	// Search for the same relative shift
-	// Avoids brutal handling of Grid pointers
-	if ( CopyMe.geom.shifts[pp]==geom.shifts[p] ) {
-	  _A[p] = CopyMe.Cell.Extract(CopyMe._A[pp]);
-	  //	  _Adag[p] = CopyMe.Cell.Extract(CopyMe._Adag[pp]);
-	  nfound++;
-	}
-      }
-    }
-    GRID_ASSERT(nfound==geom.npoint);
-    ExchangeCoarseLinks();
-  }
-  */
-  
-  GeneralCoarsenedMatrix(NonLocalStencilGeometry &_geom,GridBase *FineGrid, GridCartesian * CoarseGrid)
-    : geom(_geom),
-      _FineGrid(FineGrid),
-      _CoarseGrid(CoarseGrid),
-      hermitian(1),
-      Cell(_geom.Depth(),_CoarseGrid),
-      Stencil(Cell.grids.back(),geom.shifts)
-  {
-    {
-      int npoint = _geom.npoint;
-    }
-    _A.resize(geom.npoint,CoarseGrid);
-    //    _Adag.resize(geom.npoint,CoarseGrid);
-  }
-  void M (const CoarseVector &in, CoarseVector &out)
-  {
-    Mult(_A,in,out);
-  }
-  void Mdag (const CoarseVector &in, CoarseVector &out)
-  {
-    GRID_ASSERT(hermitian);
-    Mult(_A,in,out);
-    //    if ( hermitian ) M(in,out);
-    //    else Mult(_Adag,in,out);
-  }
-  void Mult (std::vector<CoarseMatrix> &A,const CoarseVector &in, CoarseVector &out)
-  {
-    RealD tviews=0;    RealD ttot=0;    RealD tmult=0;   RealD texch=0;    RealD text=0; RealD ttemps=0; RealD tcopy=0;
-    RealD tmult2=0;
-
-    ttot=-usecond();
-    conformable(CoarseGrid(),in.Grid());
-    conformable(in.Grid(),out.Grid());
-    out.Checkerboard() = in.Checkerboard();
-    CoarseVector tin=in;
-
-    texch-=usecond();
-    CoarseVector pin = Cell.ExchangePeriodic(tin);
-    texch+=usecond();
-
-    CoarseVector pout(pin.Grid());
-
-    int npoint = geom.npoint;
-    typedef LatticeView<Cobj> Aview;
-    typedef LatticeView<Cvec> Vview;
-      
-    const int Nsimd = CComplex::Nsimd();
-    
-    int64_t osites=pin.Grid()->oSites();
-
-    RealD flops = 1.0* npoint * nbasis * nbasis * 8.0 * osites * CComplex::Nsimd();
-    RealD bytes = 1.0*osites*sizeof(siteMatrix)*npoint
-                + 2.0*osites*sizeof(siteVector)*npoint;
-      
-    {
-      tviews-=usecond();
-      autoView( in_v , pin, AcceleratorRead);
-      autoView( out_v , pout, AcceleratorWriteDiscard);
-      autoView( Stencil_v  , Stencil, AcceleratorRead);
-      tviews+=usecond();
-
-      // Static and prereserve to keep UVM region live and not resized across multiple calls
-      ttemps-=usecond();
-      MultTemporaries.resize(npoint,pin.Grid());       
-      ttemps+=usecond();
-      std::vector<Aview> AcceleratorViewContainer_h;
-      std::vector<Vview> AcceleratorVecViewContainer_h; 
-
-      tviews-=usecond();
-      for(int p=0;p<npoint;p++) {
-	AcceleratorViewContainer_h.push_back(      A[p].View(AcceleratorRead));
-	AcceleratorVecViewContainer_h.push_back(MultTemporaries[p].View(AcceleratorWrite));
-      }
-      tviews+=usecond();
-
-      static deviceVector<Aview> AcceleratorViewContainer; AcceleratorViewContainer.resize(npoint);
-      static deviceVector<Vview> AcceleratorVecViewContainer; AcceleratorVecViewContainer.resize(npoint); 
-      
-      auto Aview_p = &AcceleratorViewContainer[0];
-      auto Vview_p = &AcceleratorVecViewContainer[0];
-      tcopy-=usecond();
-      acceleratorCopyToDevice(&AcceleratorViewContainer_h[0],&AcceleratorViewContainer[0],npoint *sizeof(Aview));
-      acceleratorCopyToDevice(&AcceleratorVecViewContainer_h[0],&AcceleratorVecViewContainer[0],npoint *sizeof(Vview));
-      tcopy+=usecond();
-
-      tmult-=usecond();
-      accelerator_for(spb, osites*nbasis*npoint, Nsimd, {
-	  typedef decltype(coalescedRead(in_v[0](0))) calcComplex;
-	  int32_t ss   = spb/(nbasis*npoint);
-	  int32_t bp   = spb%(nbasis*npoint);
-	  int32_t point= bp/nbasis;
-	  int32_t b    = bp%nbasis;
-	  auto SE  = Stencil_v.GetEntry(point,ss);
-	  auto nbr = coalescedReadGeneralPermute(in_v[SE->_offset],SE->_permute,Nd);
-	  auto res = coalescedRead(Aview_p[point][ss](0,b))*nbr(0);
-	  for(int bb=1;bb<nbasis;bb++) {
-	    res = res + coalescedRead(Aview_p[point][ss](bb,b))*nbr(bb);
-	  }
-	  coalescedWrite(Vview_p[point][ss](b),res);
-      });
-      tmult2-=usecond();
-      accelerator_for(sb, osites*nbasis, Nsimd, {
-	  int ss = sb/nbasis;
-	  int b  = sb%nbasis;
-	  auto res = coalescedRead(Vview_p[0][ss](b));
-	  for(int point=1;point<npoint;point++){
-	    res = res + coalescedRead(Vview_p[point][ss](b));
-	  }
-	  coalescedWrite(out_v[ss](b),res);
-      });
-      tmult2+=usecond();
-      tmult+=usecond();
-      for(int p=0;p<npoint;p++) {
-	AcceleratorViewContainer_h[p].ViewClose();
-	AcceleratorVecViewContainer_h[p].ViewClose();
-      }
-    }
-
-    text-=usecond();
-    out = Cell.Extract(pout);
-    text+=usecond();
-    ttot+=usecond();
-    
-    std::cout << GridLogPerformance<<"Coarse 1rhs Mult Aviews "<<tviews<<" us"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Mult exch "<<texch<<" us"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Mult mult "<<tmult<<" us"<<std::endl;
-    std::cout << GridLogPerformance<<" of which mult2  "<<tmult2<<" us"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Mult ext  "<<text<<" us"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Mult temps "<<ttemps<<" us"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Mult copy  "<<tcopy<<" us"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Mult tot  "<<ttot<<" us"<<std::endl;
-    //    std::cout << GridLogPerformance<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Kernel flops "<< flops<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Kernel flop/s "<< flops/tmult<<" mflop/s"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse Kernel bytes/s "<< bytes/tmult<<" MB/s"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse overall flops/s "<< flops/ttot<<" mflop/s"<<std::endl;
-    std::cout << GridLogPerformance<<"Coarse total bytes   "<< bytes/1e6<<" MB"<<std::endl;
-
-  };
-  
-  void PopulateAdag(void)
-  {
-    for(int64_t bidx=0;bidx<CoarseGrid()->gSites() ;bidx++){
-      Coordinate bcoor;
-      CoarseGrid()->GlobalIndexToGlobalCoor(bidx,bcoor);
-      
-      for(int p=0;p<geom.npoint;p++){
-	Coordinate scoor = bcoor;
-	for(int mu=0;mu<bcoor.size();mu++){
-	  int L = CoarseGrid()->GlobalDimensions()[mu];
-	  scoor[mu] = (bcoor[mu] - geom.shifts[p][mu] + L) % L; // Modulo arithmetic
-	}
-	// Flip to poke/peekLocalSite and not too bad
-	auto link = peekSite(_A[p],scoor);
-	int pp = geom.Reverse(p);
-	pokeSite(adj(link),_Adag[pp],bcoor);
-      }
-    }
-  }
-  /////////////////////////////////////////////////////////////
-  // 
-  // A) Only reduced flops option is to use a padded cell of depth 4
-  // and apply MpcDagMpc in the padded cell.
-  //
-  // Makes for ONE application of MpcDagMpc per vector instead of 30 or 80.
-  // With the effective cell size around (B+8)^4 perhaps 12^4/4^4 ratio
-  // Cost is 81x more, same as stencil size.
-  //
-  // But: can eliminate comms and do as local dirichlet.
-  //
-  // Local exchange gauge field once.
-  // Apply to all vectors, local only computation.
-  // Must exchange ghost subcells in reverse process of PaddedCell to take inner products
-  //
-  // B) Can reduce cost: pad by 1, apply Deo      (4^4+6^4+8^4+8^4 )/ (4x 4^4)
-  //                     pad by 2, apply Doe
-  //                     pad by 3, apply Deo
-  //                     then break out 8x directions; cost is ~10x MpcDagMpc per vector
-  //
-  // => almost factor of 10 in setup cost, excluding data rearrangement
-  //
-  // Intermediates -- ignore the corner terms, leave approximate and force Hermitian
-  // Intermediates -- pad by 2 and apply 1+8+24 = 33 times.
-  /////////////////////////////////////////////////////////////
-
-    //////////////////////////////////////////////////////////
-    // BFM HDCG style approach: Solve a system of equations to get Aij
-    //////////////////////////////////////////////////////////
-    /*
-     *     Here, k,l index which possible shift within the 3^Nd "ball" connected by MdagM.
-     *
-     *     conj(phases[block]) proj[k][ block*Nvec+j ] =  \sum_ball  e^{i q_k . delta} < phi_{block,j} | MdagM | phi_{(block+delta),i} > 
-     *                                                 =  \sum_ball e^{iqk.delta} A_ji
-     *
-     *     Must invert matrix M_k,l = e^[i q_k . delta_l]
-     *
-     *     Where q_k = delta_k . (2*M_PI/global_nb[mu])
-     */
-#if 0
-  void CoarsenOperator(LinearOperatorBase<Lattice<Fobj> > &linop,
-		       Aggregation<Fobj,CComplex,nbasis> & Subspace)
-  {
-    std::cout << GridLogMessage<< "GeneralCoarsenMatrix "<< std::endl;
-    GridBase *grid = FineGrid();
-
-    RealD tproj=0.0;
-    RealD teigen=0.0;
-    RealD tmat=0.0;
-    RealD tphase=0.0;
-    RealD tinv=0.0;
-
-    /////////////////////////////////////////////////////////////
-    // Orthogonalise the subblocks over the basis
-    /////////////////////////////////////////////////////////////
-    CoarseScalar InnerProd(CoarseGrid()); 
-    blockOrthogonalise(InnerProd,Subspace.subspace);
-
-    const int npoint = geom.npoint;
-      
-    Coordinate clatt = CoarseGrid()->GlobalDimensions();
-    int Nd = CoarseGrid()->Nd();
-
-      /*
-       *     Here, k,l index which possible momentum/shift within the N-points connected by MdagM.
-       *     Matrix index i is mapped to this shift via 
-       *               geom.shifts[i]
-       *
-       *     conj(pha[block]) proj[k (which mom)][j (basis vec cpt)][block] 
-       *       =  \sum_{l in ball}  e^{i q_k . delta_l} < phi_{block,j} | MdagM | phi_{(block+delta_l),i} > 
-       *       =  \sum_{l in ball} e^{iqk.delta_l} A_ji^{b.b+l}
-       *       = M_{kl} A_ji^{b.b+l}
-       *
-       *     Must assemble and invert matrix M_k,l = e^[i q_k . delta_l]
-       *  
-       *     Where q_k = delta_k . (2*M_PI/global_nb[mu])
-       *
-       *     Then A{ji}^{b,b+l} = M^{-1}_{lm} ComputeProj_{m,b,i,j}
-       */
-    teigen-=usecond();
-    Eigen::MatrixXcd Mkl    = Eigen::MatrixXcd::Zero(npoint,npoint);
-    Eigen::MatrixXcd invMkl = Eigen::MatrixXcd::Zero(npoint,npoint);
-    ComplexD ci(0.0,1.0);
-    for(int k=0;k<npoint;k++){ // Loop over momenta
-
-      for(int l=0;l<npoint;l++){ // Loop over nbr relative
-	ComplexD phase(0.0,0.0);
-	for(int mu=0;mu<Nd;mu++){
-	  RealD TwoPiL =  M_PI * 2.0/ clatt[mu];
-	  phase=phase+TwoPiL*geom.shifts[k][mu]*geom.shifts[l][mu];
-	}
-	phase=exp(phase*ci);
-	Mkl(k,l) = phase;
-      }
-    }
-    invMkl = Mkl.inverse();
-    teigen+=usecond();
-
-    ///////////////////////////////////////////////////////////////////////
-    // Now compute the matrix elements of linop between the orthonormal
-    // set of vectors.
-    ///////////////////////////////////////////////////////////////////////
-    FineField phaV(grid); // Phased block basis vector
-    FineField MphaV(grid);// Matrix applied
-    CoarseVector coarseInner(CoarseGrid());
-
-    std::vector<CoarseVector> ComputeProj(npoint,CoarseGrid());
-    std::vector<CoarseVector>          FT(npoint,CoarseGrid());
-    for(int i=0;i<nbasis;i++){// Loop over basis vectors
-      std::cout << GridLogMessage<< "CoarsenMatrixColoured vec "<<i<<"/"<<nbasis<< std::endl;
-      for(int p=0;p<npoint;p++){ // Loop over momenta in npoint
-	/////////////////////////////////////////////////////
-	// Stick a phase on every block
-	/////////////////////////////////////////////////////
-	tphase-=usecond();
-	CoarseComplexField coor(CoarseGrid());
-	CoarseComplexField pha(CoarseGrid());	pha=Zero();
-	for(int mu=0;mu<Nd;mu++){
-	  LatticeCoordinate(coor,mu);
-	  RealD TwoPiL =  M_PI * 2.0/ clatt[mu];
-	  pha = pha + (TwoPiL * geom.shifts[p][mu]) * coor;
-	}
-	pha  =exp(pha*ci);
-	phaV=Zero();
-	blockZAXPY(phaV,pha,Subspace.subspace[i],phaV);
-	tphase+=usecond();
-
-	/////////////////////////////////////////////////////////////////////
-	// Multiple phased subspace vector by matrix and project to subspace
-	// Remove local bulk phase to leave relative phases
-	/////////////////////////////////////////////////////////////////////
-	tmat-=usecond();
-	linop.Op(phaV,MphaV);
-	tmat+=usecond();
-
-	tproj-=usecond();
-	blockProject(coarseInner,MphaV,Subspace.subspace);
-	coarseInner = conjugate(pha) * coarseInner;
-
-	ComputeProj[p] = coarseInner;
-	tproj+=usecond();
-
-      }
-
-      tinv-=usecond();
-      for(int k=0;k<npoint;k++){
-	FT[k] = Zero();
-	for(int l=0;l<npoint;l++){
-	  FT[k]= FT[k]+ invMkl(l,k)*ComputeProj[l];
-	}
-      
-	int osites=CoarseGrid()->oSites();
-	autoView( A_v  , _A[k], AcceleratorWrite);
-	autoView( FT_v  , FT[k], AcceleratorRead);
-	accelerator_for(sss, osites, 1, {
-	    for(int j=0;j<nbasis;j++){
-	      A_v[sss](i,j) = FT_v[sss](j);
-	    }
-        });
-      }
-      tinv+=usecond();
-    }
-
-    // Only needed if nonhermitian
-    if ( ! hermitian ) {
-      //      std::cout << GridLogMessage<<"PopulateAdag  "<<std::endl;
-      //      PopulateAdag();
-    }
-
-    // Need to write something to populate Adag from A
-    ExchangeCoarseLinks();
-    std::cout << GridLogMessage<<"CoarsenOperator eigen  "<<teigen<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator phase  "<<tphase<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator mat    "<<tmat <<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator proj   "<<tproj<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator inv    "<<tinv<<" us"<<std::endl;
-  }
-#else
-  //////////////////////////////////////////////////////////////////////
-  // Galerkin projection of matrix
-  //////////////////////////////////////////////////////////////////////
-  void CoarsenOperator(LinearOperatorBase<Lattice<Fobj> > &linop,
-		       Aggregation<Fobj,CComplex,nbasis> & Subspace)
-  {
-    CoarsenOperator(linop,Subspace,Subspace);
-  }
-  //////////////////////////////////////////////////////////////////////
-  // Petrov - Galerkin projection of matrix
-  //////////////////////////////////////////////////////////////////////
-  void CoarsenOperator(LinearOperatorBase<Lattice<Fobj> > &linop,
-		       Aggregation<Fobj,CComplex,nbasis> & U,
-		       Aggregation<Fobj,CComplex,nbasis> & V)
-  {
-    std::cout << GridLogMessage<< "GeneralCoarsenMatrix "<< std::endl;
-    GridBase *grid = FineGrid();
-
-    RealD tproj=0.0;
-    RealD teigen=0.0;
-    RealD tmat=0.0;
-    RealD tphase=0.0;
-    RealD tphaseBZ=0.0;
-    RealD tinv=0.0;
-
-    /////////////////////////////////////////////////////////////
-    // Orthogonalise the subblocks over the basis
-    /////////////////////////////////////////////////////////////
-    CoarseScalar InnerProd(CoarseGrid()); 
-    blockOrthogonalise(InnerProd,V.subspace);
-    blockOrthogonalise(InnerProd,U.subspace);
-
-    const int npoint = geom.npoint;
-      
-    Coordinate clatt = CoarseGrid()->GlobalDimensions();
-    int Nd = CoarseGrid()->Nd();
-
-      /*
-       *     Here, k,l index which possible momentum/shift within the N-points connected by MdagM.
-       *     Matrix index i is mapped to this shift via 
-       *               geom.shifts[i]
-       *
-       *     conj(pha[block]) proj[k (which mom)][j (basis vec cpt)][block] 
-       *       =  \sum_{l in ball}  e^{i q_k . delta_l} < phi_{block,j} | MdagM | phi_{(block+delta_l),i} > 
-       *       =  \sum_{l in ball} e^{iqk.delta_l} A_ji^{b.b+l}
-       *       = M_{kl} A_ji^{b.b+l}
-       *
-       *     Must assemble and invert matrix M_k,l = e^[i q_k . delta_l]
-       *  
-       *     Where q_k = delta_k . (2*M_PI/global_nb[mu])
-       *
-       *     Then A{ji}^{b,b+l} = M^{-1}_{lm} ComputeProj_{m,b,i,j}
-       */
-    teigen-=usecond();
-    Eigen::MatrixXcd Mkl    = Eigen::MatrixXcd::Zero(npoint,npoint);
-    Eigen::MatrixXcd invMkl = Eigen::MatrixXcd::Zero(npoint,npoint);
-    ComplexD ci(0.0,1.0);
-    for(int k=0;k<npoint;k++){ // Loop over momenta
-
-      for(int l=0;l<npoint;l++){ // Loop over nbr relative
-	ComplexD phase(0.0,0.0);
-	for(int mu=0;mu<Nd;mu++){
-	  RealD TwoPiL =  M_PI * 2.0/ clatt[mu];
-	  phase=phase+TwoPiL*geom.shifts[k][mu]*geom.shifts[l][mu];
-	}
-	phase=exp(phase*ci);
-	Mkl(k,l) = phase;
-      }
-    }
-    invMkl = Mkl.inverse();
-    teigen+=usecond();
-
-    ///////////////////////////////////////////////////////////////////////
-    // Now compute the matrix elements of linop between the orthonormal
-    // set of vectors.
-    ///////////////////////////////////////////////////////////////////////
-    FineField phaV(grid); // Phased block basis vector
-    FineField MphaV(grid);// Matrix applied
-    std::vector<FineComplexField> phaF(npoint,grid);
-    std::vector<CoarseComplexField> pha(npoint,CoarseGrid());
-    
-    CoarseVector coarseInner(CoarseGrid());
-    
-    typedef typename CComplex::scalar_type SComplex;
-    FineComplexField one(grid); one=SComplex(1.0);
-    FineComplexField zz(grid); zz = Zero();
-    tphase=-usecond();
-    for(int p=0;p<npoint;p++){ // Loop over momenta in npoint
-      /////////////////////////////////////////////////////
-      // Stick a phase on every block
-      /////////////////////////////////////////////////////
-      CoarseComplexField coor(CoarseGrid());
-      pha[p]=Zero();
-      for(int mu=0;mu<Nd;mu++){
-	LatticeCoordinate(coor,mu);
-	RealD TwoPiL =  M_PI * 2.0/ clatt[mu];
-	pha[p] = pha[p] + (TwoPiL * geom.shifts[p][mu]) * coor;
-      }
-      pha[p]  =exp(pha[p]*ci);
-
-      blockZAXPY(phaF[p],pha[p],one,zz);
-      
-    }
-    tphase+=usecond();
-    
-    std::vector<CoarseVector> ComputeProj(npoint,CoarseGrid());
-    std::vector<CoarseVector>          FT(npoint,CoarseGrid());
-    for(int i=0;i<nbasis;i++){// Loop over basis vectors
-      std::cout << GridLogMessage<< "CoarsenMatrixColoured vec "<<i<<"/"<<nbasis<< std::endl;
-      for(int p=0;p<npoint;p++){ // Loop over momenta in npoint
-	tphaseBZ-=usecond();
-	phaV = phaF[p]*V.subspace[i];
-	tphaseBZ+=usecond();
-
-	/////////////////////////////////////////////////////////////////////
-	// Multiple phased subspace vector by matrix and project to subspace
-	// Remove local bulk phase to leave relative phases
-	/////////////////////////////////////////////////////////////////////
-	tmat-=usecond();
-	linop.Op(phaV,MphaV);
-	tmat+=usecond();
-	//	std::cout << i << " " <<p << " MphaV "<<norm2(MphaV)<<" "<<norm2(phaV)<<std::endl;
-
-	tproj-=usecond();
-	blockProject(coarseInner,MphaV,U.subspace);
-	coarseInner = conjugate(pha[p]) * coarseInner;
-
-	ComputeProj[p] = coarseInner;
-	tproj+=usecond();
-	//	std::cout << i << " " <<p << " ComputeProj "<<norm2(ComputeProj[p])<<std::endl;
-
-      }
-
-      tinv-=usecond();
-      for(int k=0;k<npoint;k++){
-	FT[k] = Zero();
-	for(int l=0;l<npoint;l++){
-	  FT[k]= FT[k]+ invMkl(l,k)*ComputeProj[l];
-	}
-      
-	int osites=CoarseGrid()->oSites();
-	autoView( A_v  , _A[k], AcceleratorWrite);
-	autoView( FT_v  , FT[k], AcceleratorRead);
-	accelerator_for(sss, osites, 1, {
-	    for(int j=0;j<nbasis;j++){
-	      A_v[sss](i,j) = FT_v[sss](j);
-	    }
-        });
-      }
-      tinv+=usecond();
-    }
-
-    // Only needed if nonhermitian
-    if ( ! hermitian ) {
-      //      std::cout << GridLogMessage<<"PopulateAdag  "<<std::endl;
-      //      PopulateAdag();
-    }
-
-    for(int p=0;p<geom.npoint;p++){
-      std::cout << " _A["<<p<<"] "<<norm2(_A[p])<<std::endl;
-    }
-
-    // Need to write something to populate Adag from A
-    ExchangeCoarseLinks();
-    std::cout << GridLogMessage<<"CoarsenOperator eigen  "<<teigen<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator phase  "<<tphase<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator phaseBZ "<<tphaseBZ<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator mat    "<<tmat <<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator proj   "<<tproj<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator inv    "<<tinv<<" us"<<std::endl;
-  }
-#endif  
-  void ExchangeCoarseLinks(void){
-    for(int p=0;p<geom.npoint;p++){
-      _A[p] = Cell.ExchangePeriodic(_A[p]);
-      //      _Adag[p]= Cell.ExchangePeriodic(_Adag[p]);
-    }
-  }
-  virtual  void Mdiag    (const Field &in, Field &out){ GRID_ASSERT(0);};
-  virtual  void Mdir     (const Field &in, Field &out,int dir, int disp){assert(0);};
-  virtual  void MdirAll  (const Field &in, std::vector<Field> &out){assert(0);};
-};
-
-
-  
-NAMESPACE_END(Grid);

Grid/algorithms/multigrid/GeneralCoarsenedMatrixMultiRHS.h

@@ -1,729 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/GeneralCoarsenedMatrixMultiRHS.h
-
-    Copyright (C) 2015
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-
-NAMESPACE_BEGIN(Grid);
-
-
-// Fine Object == (per site) type of fine field
-// nbasis      == number of deflation vectors
-template<class Fobj,class CComplex,int nbasis>
-class MultiGeneralCoarsenedMatrix : public SparseMatrixBase<Lattice<iVector<CComplex,nbasis > > >  {
-public:
-  typedef typename CComplex::scalar_object SComplex;
-  typedef GeneralCoarsenedMatrix<Fobj,CComplex,nbasis> GeneralCoarseOp;
-  typedef MultiGeneralCoarsenedMatrix<Fobj,CComplex,nbasis> MultiGeneralCoarseOp;
-
-  typedef iVector<CComplex,nbasis >           siteVector;
-  typedef iMatrix<CComplex,nbasis >           siteMatrix;
-  typedef iVector<SComplex,nbasis >           calcVector;
-  typedef iMatrix<SComplex,nbasis >           calcMatrix;
-  typedef Lattice<iScalar<CComplex> >         CoarseComplexField;
-  typedef Lattice<siteVector>                 CoarseVector;
-  typedef Lattice<iMatrix<CComplex,nbasis > > CoarseMatrix;
-  typedef iMatrix<CComplex,nbasis >  Cobj;
-  typedef iVector<CComplex,nbasis >  Cvec;
-  typedef Lattice< CComplex >   CoarseScalar; // used for inner products on fine field
-  typedef Lattice<Fobj >        FineField;
-  typedef Lattice<CComplex >    FineComplexField;
-  typedef CoarseVector Field;
-
-  ////////////////////
-  // Data members
-  ////////////////////
-  GridCartesian *       _CoarseGridMulti; 
-  NonLocalStencilGeometry geom;
-  NonLocalStencilGeometry geom_srhs;
-  PaddedCell Cell;
-  GeneralLocalStencil Stencil;
-
-  deviceVector<calcVector> BLAS_B;
-  deviceVector<calcVector> BLAS_C;
-  std::vector<deviceVector<calcMatrix> > BLAS_A;
-
-  std::vector<deviceVector<ComplexD *> > BLAS_AP;
-  std::vector<deviceVector<ComplexD *> > BLAS_BP;
-  deviceVector<ComplexD *>               BLAS_CP;
-
-  ///////////////////////
-  // Interface
-  ///////////////////////
-  GridBase      * Grid(void)           { return _CoarseGridMulti; };   // this is all the linalg routines need to know
-  GridCartesian * CoarseGrid(void)     { return _CoarseGridMulti; };   // this is all the linalg routines need to know
-
-  // Can be used to do I/O on the operator matrices externally
-  void SetMatrix (int p,CoarseMatrix & A)
-  {
-    GRID_ASSERT(A.size()==geom_srhs.npoint);
-    GridtoBLAS(A[p],BLAS_A[p]);
-  }
-  void GetMatrix (int p,CoarseMatrix & A)
-  {
-    GRID_ASSERT(A.size()==geom_srhs.npoint);
-    BLAStoGrid(A[p],BLAS_A[p]);
-  }
-  void CopyMatrix (GeneralCoarseOp &_Op)
-  {
-    for(int p=0;p<geom.npoint;p++){
-      auto Aup = _Op.Cell.Extract(_Op._A[p]);
-      //Unpadded
-      GridtoBLAS(Aup,BLAS_A[p]);
-    }
-  }
-  /*
-  void CheckMatrix (GeneralCoarseOp &_Op)
-  {
-    std::cout <<"************* Checking the little direc operator mRHS"<<std::endl;
-    for(int p=0;p<geom.npoint;p++){
-      //Unpadded
-      auto Aup = _Op.Cell.Extract(_Op._A[p]);
-      auto Ack = Aup;
-      BLAStoGrid(Ack,BLAS_A[p]);
-      std::cout << p<<" Ack "<<norm2(Ack)<<std::endl;
-      std::cout << p<<" Aup "<<norm2(Aup)<<std::endl;
-    }
-    std::cout <<"************* "<<std::endl;
-  }
-  */
-  
-  MultiGeneralCoarsenedMatrix(NonLocalStencilGeometry &_geom,GridCartesian *CoarseGridMulti) :
-    _CoarseGridMulti(CoarseGridMulti),
-    geom_srhs(_geom),
-    geom(_CoarseGridMulti,_geom.hops,_geom.skip+1),
-    Cell(geom.Depth(),_CoarseGridMulti),
-    Stencil(Cell.grids.back(),geom.shifts) // padded cell stencil
-  {
-    int32_t padded_sites   = Cell.grids.back()->lSites();
-    int32_t unpadded_sites = CoarseGridMulti->lSites();
-    
-    int32_t nrhs  = CoarseGridMulti->FullDimensions()[0];  // # RHS
-    int32_t orhs  = nrhs/CComplex::Nsimd();
-
-    padded_sites   = padded_sites/nrhs;
-    unpadded_sites = unpadded_sites/nrhs;
-    
-    /////////////////////////////////////////////////
-    // Device data vector storage
-    /////////////////////////////////////////////////
-    BLAS_A.resize(geom.npoint);
-    for(int p=0;p<geom.npoint;p++){
-      BLAS_A[p].resize (unpadded_sites); // no ghost zone, npoint elements
-    }
-    
-    BLAS_B.resize(nrhs *padded_sites);   // includes ghost zone
-    BLAS_C.resize(nrhs *unpadded_sites); // no ghost zone
-    BLAS_AP.resize(geom.npoint);
-    BLAS_BP.resize(geom.npoint);
-    for(int p=0;p<geom.npoint;p++){
-      BLAS_AP[p].resize(unpadded_sites);
-      BLAS_BP[p].resize(unpadded_sites);
-    }
-    BLAS_CP.resize(unpadded_sites);
-
-    /////////////////////////////////////////////////
-    // Pointers to data
-    /////////////////////////////////////////////////
-
-    // Site identity mapping for A
-    for(int p=0;p<geom.npoint;p++){
-      for(int ss=0;ss<unpadded_sites;ss++){
-	ComplexD *ptr = (ComplexD *)&BLAS_A[p][ss];
-	acceleratorPut(BLAS_AP[p][ss],ptr);
-      }
-    }
-    // Site identity mapping for C
-    for(int ss=0;ss<unpadded_sites;ss++){
-      ComplexD *ptr = (ComplexD *)&BLAS_C[ss*nrhs];
-      acceleratorPut(BLAS_CP[ss],ptr);
-    }
-
-    // Neighbour table is more complicated
-    int32_t j=0; // Interior point counter (unpadded)
-    for(int32_t s=0;s<padded_sites;s++){ // 4 volume, padded
-      int ghost_zone=0;
-      for(int32_t point = 0 ; point < geom.npoint; point++){
-	int i=s*orhs*geom.npoint+point;
-	if( Stencil._entries[i]._wrap ) { // stencil is indexed by the oSite of the CoarseGridMulti, hence orhs factor
-	  ghost_zone=1; // If general stencil wrapped in any direction, wrap=1
-	}
-      }
-
-      if( ghost_zone==0) {
-	for(int32_t point = 0 ; point < geom.npoint; point++){
-	  int i=s*orhs*geom.npoint+point;
- 	  int32_t nbr = Stencil._entries[i]._offset*CComplex::Nsimd(); // oSite -> lSite
-	  GRID_ASSERT(nbr<BLAS_B.size());
-	  ComplexD * ptr = (ComplexD *)&BLAS_B[nbr];
-	  acceleratorPut(BLAS_BP[point][j],ptr); // neighbour indexing in ghost zone volume
-	}
-	j++;
-      }
-    }
-    GRID_ASSERT(j==unpadded_sites);
-  }
-  template<class vobj> void GridtoBLAS(const Lattice<vobj> &from,deviceVector<typename vobj::scalar_object> &to)
-  {
-  typedef typename vobj::scalar_object sobj;
-  typedef typename vobj::scalar_type scalar_type;
-  typedef typename vobj::vector_type vector_type;
-
-  GridBase *Fg = from.Grid();
-  GRID_ASSERT(!Fg->_isCheckerBoarded);
-  int nd = Fg->_ndimension;
-
-  to.resize(Fg->lSites());
-
-  Coordinate LocalLatt = Fg->LocalDimensions();
-  size_t nsite = 1;
-  for(int i=0;i<nd;i++) nsite *= LocalLatt[i];
-
-  ////////////////////////////////////////////////////////////////////////////////////////////////
-  // do the index calc on the GPU
-  ////////////////////////////////////////////////////////////////////////////////////////////////
-  Coordinate f_ostride = Fg->_ostride;
-  Coordinate f_istride = Fg->_istride;
-  Coordinate f_rdimensions = Fg->_rdimensions;
-
-  autoView(from_v,from,AcceleratorRead);
-  auto to_v = &to[0];
-
-  const int words=sizeof(vobj)/sizeof(vector_type);
-  accelerator_for(idx,nsite,1,{
-      
-      Coordinate from_coor, base;
-      Lexicographic::CoorFromIndex(base,idx,LocalLatt);
-      for(int i=0;i<nd;i++){
-	from_coor[i] = base[i];
-      }
-      int from_oidx = 0; for(int d=0;d<nd;d++) from_oidx+=f_ostride[d]*(from_coor[d]%f_rdimensions[d]);
-      int from_lane = 0; for(int d=0;d<nd;d++) from_lane+=f_istride[d]*(from_coor[d]/f_rdimensions[d]);
-
-      const vector_type* from = (const vector_type *)&from_v[from_oidx];
-      scalar_type* to = (scalar_type *)&to_v[idx];
-      
-      scalar_type stmp;
-      for(int w=0;w<words;w++){
-	stmp = getlane(from[w], from_lane);
-	to[w] = stmp;
-      }
-    });
-  }    
-  template<class vobj> void BLAStoGrid(Lattice<vobj> &grid,deviceVector<typename vobj::scalar_object> &in)
-  {
-  typedef typename vobj::scalar_object sobj;
-  typedef typename vobj::scalar_type scalar_type;
-  typedef typename vobj::vector_type vector_type;
-
-  GridBase *Tg = grid.Grid();
-  GRID_ASSERT(!Tg->_isCheckerBoarded);
-  int nd = Tg->_ndimension;
-  
-  GRID_ASSERT(in.size()==Tg->lSites());
-
-  Coordinate LocalLatt = Tg->LocalDimensions();
-  size_t nsite = 1;
-  for(int i=0;i<nd;i++) nsite *= LocalLatt[i];
-
-  ////////////////////////////////////////////////////////////////////////////////////////////////
-  // do the index calc on the GPU
-  ////////////////////////////////////////////////////////////////////////////////////////////////
-  Coordinate t_ostride = Tg->_ostride;
-  Coordinate t_istride = Tg->_istride;
-  Coordinate t_rdimensions = Tg->_rdimensions;
-
-  autoView(to_v,grid,AcceleratorWrite);
-  auto from_v = &in[0];
-
-  const int words=sizeof(vobj)/sizeof(vector_type);
-  accelerator_for(idx,nsite,1,{
-      
-      Coordinate to_coor, base;
-      Lexicographic::CoorFromIndex(base,idx,LocalLatt);
-      for(int i=0;i<nd;i++){
-	to_coor[i] = base[i];
-      }
-      int to_oidx = 0; for(int d=0;d<nd;d++) to_oidx+=t_ostride[d]*(to_coor[d]%t_rdimensions[d]);
-      int to_lane = 0; for(int d=0;d<nd;d++) to_lane+=t_istride[d]*(to_coor[d]/t_rdimensions[d]);
-
-      vector_type* to = (vector_type *)&to_v[to_oidx];
-      scalar_type* from = (scalar_type *)&from_v[idx];
-      
-      scalar_type stmp;
-      for(int w=0;w<words;w++){
-	stmp=from[w];
-	putlane(to[w], stmp, to_lane);
-      }
-    });
-  }
-  void CoarsenOperator(LinearOperatorBase<Lattice<Fobj> > &linop,
-		       Aggregation<Fobj,CComplex,nbasis> & Subspace,
-		       GridBase *CoarseGrid)
-  {
-#if 0
-    std::cout << GridLogMessage<< "GeneralCoarsenMatrixMrhs "<< std::endl;
-
-    GridBase *grid = Subspace.FineGrid;
-
-    /////////////////////////////////////////////////////////////
-    // Orthogonalise the subblocks over the basis
-    /////////////////////////////////////////////////////////////
-    CoarseScalar InnerProd(CoarseGrid); 
-    blockOrthogonalise(InnerProd,Subspace.subspace);
-
-    const int npoint = geom_srhs.npoint;
-
-    Coordinate clatt = CoarseGrid->GlobalDimensions();
-    int Nd = CoarseGrid->Nd();
-      /*
-       *     Here, k,l index which possible momentum/shift within the N-points connected by MdagM.
-       *     Matrix index i is mapped to this shift via 
-       *               geom.shifts[i]
-       *
-       *     conj(pha[block]) proj[k (which mom)][j (basis vec cpt)][block] 
-       *       =  \sum_{l in ball}  e^{i q_k . delta_l} < phi_{block,j} | MdagM | phi_{(block+delta_l),i} > 
-       *       =  \sum_{l in ball} e^{iqk.delta_l} A_ji^{b.b+l}
-       *       = M_{kl} A_ji^{b.b+l}
-       *
-       *     Must assemble and invert matrix M_k,l = e^[i q_k . delta_l]
-       *  
-       *     Where q_k = delta_k . (2*M_PI/global_nb[mu])
-       *
-       *     Then A{ji}^{b,b+l} = M^{-1}_{lm} ComputeProj_{m,b,i,j}
-       */
-    Eigen::MatrixXcd Mkl    = Eigen::MatrixXcd::Zero(npoint,npoint);
-    Eigen::MatrixXcd invMkl = Eigen::MatrixXcd::Zero(npoint,npoint);
-    ComplexD ci(0.0,1.0);
-    for(int k=0;k<npoint;k++){ // Loop over momenta
-
-      for(int l=0;l<npoint;l++){ // Loop over nbr relative
-	ComplexD phase(0.0,0.0);
-	for(int mu=0;mu<Nd;mu++){
-	  RealD TwoPiL =  M_PI * 2.0/ clatt[mu];
-	  phase=phase+TwoPiL*geom_srhs.shifts[k][mu]*geom_srhs.shifts[l][mu];
-	}
-	phase=exp(phase*ci);
-	Mkl(k,l) = phase;
-      }
-    }
-    invMkl = Mkl.inverse();
-
-    ///////////////////////////////////////////////////////////////////////
-    // Now compute the matrix elements of linop between the orthonormal
-    // set of vectors.
-    ///////////////////////////////////////////////////////////////////////
-    FineField phaV(grid); // Phased block basis vector
-    FineField MphaV(grid);// Matrix applied
-    std::vector<FineComplexField> phaF(npoint,grid);
-    std::vector<CoarseComplexField> pha(npoint,CoarseGrid);
-    
-    CoarseVector coarseInner(CoarseGrid);
-    
-    typedef typename CComplex::scalar_type SComplex;
-    FineComplexField one(grid); one=SComplex(1.0);
-    FineComplexField zz(grid); zz = Zero();
-    for(int p=0;p<npoint;p++){ // Loop over momenta in npoint
-      /////////////////////////////////////////////////////
-      // Stick a phase on every block
-      /////////////////////////////////////////////////////
-      CoarseComplexField coor(CoarseGrid);
-      pha[p]=Zero();
-      for(int mu=0;mu<Nd;mu++){
-	LatticeCoordinate(coor,mu);
-	RealD TwoPiL =  M_PI * 2.0/ clatt[mu];
-	pha[p] = pha[p] + (TwoPiL * geom_srhs.shifts[p][mu]) * coor;
-      }
-      pha[p]  =exp(pha[p]*ci);	
-
-      blockZAXPY(phaF[p],pha[p],one,zz);
-    }
-
-    // Could save on temporary storage here
-    std::vector<CoarseMatrix> _A;
-    _A.resize(geom_srhs.npoint,CoarseGrid);
-
-    std::vector<CoarseVector> ComputeProj(npoint,CoarseGrid);
-    CoarseVector          FT(CoarseGrid);
-    for(int i=0;i<nbasis;i++){// Loop over basis vectors
-      std::cout << GridLogMessage<< "CoarsenMatrixColoured vec "<<i<<"/"<<nbasis<< std::endl;
-      for(int p=0;p<npoint;p++){ // Loop over momenta in npoint
-
-	phaV = phaF[p]*Subspace.subspace[i];
-
-	/////////////////////////////////////////////////////////////////////
-	// Multiple phased subspace vector by matrix and project to subspace
-	// Remove local bulk phase to leave relative phases
-	/////////////////////////////////////////////////////////////////////
-	linop.Op(phaV,MphaV);
-
-	// Fixme, could use batched block projector here
-	blockProject(coarseInner,MphaV,Subspace.subspace);
-
-	coarseInner = conjugate(pha[p]) * coarseInner;
-
-	ComputeProj[p] = coarseInner;
-      }
-
-      // Could do this with a block promote or similar BLAS call via the MultiRHSBlockProjector with a const matrix.
-      for(int k=0;k<npoint;k++){
-
-	FT = Zero();
-	for(int l=0;l<npoint;l++){
-	  FT= FT+ invMkl(l,k)*ComputeProj[l];
-	}
-      
-	int osites=CoarseGrid->oSites();
-	autoView( A_v  , _A[k], AcceleratorWrite);
-	autoView( FT_v  , FT, AcceleratorRead);
-	accelerator_for(sss, osites, 1, {
-	    for(int j=0;j<nbasis;j++){
-	      A_v[sss](i,j) = FT_v[sss](j);
-	    }
-        });
-      }
-    }
-
-    // Only needed if nonhermitian
-    //    if ( ! hermitian ) {
-    //      std::cout << GridLogMessage<<"PopulateAdag  "<<std::endl;
-    //      PopulateAdag();
-    //    }
-    // Need to write something to populate Adag from A
-
-    for(int p=0;p<geom_srhs.npoint;p++){
-      GridtoBLAS(_A[p],BLAS_A[p]);
-    }
-    /*
-Grid : Message : 11698.730546 s : CoarsenOperator eigen  1334 us
-Grid : Message : 11698.730563 s : CoarsenOperator phase  34729 us
-Grid : Message : 11698.730565 s : CoarsenOperator phaseBZ 2423814 us
-Grid : Message : 11698.730566 s : CoarsenOperator mat    127890998 us
-Grid : Message : 11698.730567 s : CoarsenOperator proj   515840840 us
-Grid : Message : 11698.730568 s : CoarsenOperator inv    103948313 us
-Takes 600s to compute matrix elements, DOMINATED by the block project.
-Easy to speed up with the batched block project.
-Store npoint vectors, get npoint x Nbasis block projection, and 81 fold faster.
-
-// Block project below taks to 240s
-Grid : Message : 328.193418 s : CoarsenOperator phase      38338 us
-Grid : Message : 328.193434 s : CoarsenOperator phaseBZ  1711226 us
-Grid : Message : 328.193436 s : CoarsenOperator mat    122213270 us
-//Grid : Message : 328.193438 s : CoarsenOperator proj   1181154 us <-- this is mistimed
-//Grid : Message : 11698.730568 s : CoarsenOperator inv  103948313 us <-- Cut this ~10x if lucky by loop fusion
-     */
-#else
-    RealD tproj=0.0;
-    RealD tmat=0.0;
-    RealD tphase=0.0;
-    RealD tphaseBZ=0.0;
-    RealD tinv=0.0;
-
-    std::cout << GridLogMessage<< "GeneralCoarsenMatrixMrhs "<< std::endl;
-
-    GridBase *grid = Subspace.FineGrid;
-
-    /////////////////////////////////////////////////////////////
-    // Orthogonalise the subblocks over the basis
-    /////////////////////////////////////////////////////////////
-    CoarseScalar InnerProd(CoarseGrid); 
-    blockOrthogonalise(InnerProd,Subspace.subspace);
-
-
-    MultiRHSBlockProject<Lattice<Fobj> >    Projector;
-    Projector.Allocate(nbasis,grid,CoarseGrid);
-    Projector.ImportBasis(Subspace.subspace);
-    
-    const int npoint = geom_srhs.npoint;
-
-    Coordinate clatt = CoarseGrid->GlobalDimensions();
-    int Nd = CoarseGrid->Nd();
-      /*
-       *     Here, k,l index which possible momentum/shift within the N-points connected by MdagM.
-       *     Matrix index i is mapped to this shift via 
-       *               geom.shifts[i]
-       *
-       *     conj(pha[block]) proj[k (which mom)][j (basis vec cpt)][block] 
-       *       =  \sum_{l in ball}  e^{i q_k . delta_l} < phi_{block,j} | MdagM | phi_{(block+delta_l),i} > 
-       *       =  \sum_{l in ball} e^{iqk.delta_l} A_ji^{b.b+l}
-       *       = M_{kl} A_ji^{b.b+l}
-       *
-       *     Must assemble and invert matrix M_k,l = e^[i q_k . delta_l]
-       *  
-       *     Where q_k = delta_k . (2*M_PI/global_nb[mu])
-       *
-       *     Then A{ji}^{b,b+l} = M^{-1}_{lm} ComputeProj_{m,b,i,j}
-       */
-    Eigen::MatrixXcd Mkl    = Eigen::MatrixXcd::Zero(npoint,npoint);
-    Eigen::MatrixXcd invMkl = Eigen::MatrixXcd::Zero(npoint,npoint);
-    ComplexD ci(0.0,1.0);
-    for(int k=0;k<npoint;k++){ // Loop over momenta
-
-      for(int l=0;l<npoint;l++){ // Loop over nbr relative
-	ComplexD phase(0.0,0.0);
-	for(int mu=0;mu<Nd;mu++){
-	  RealD TwoPiL =  M_PI * 2.0/ clatt[mu];
-	  phase=phase+TwoPiL*geom_srhs.shifts[k][mu]*geom_srhs.shifts[l][mu];
-	}
-	phase=exp(phase*ci);
-	Mkl(k,l) = phase;
-      }
-    }
-    invMkl = Mkl.inverse();
-
-    ///////////////////////////////////////////////////////////////////////
-    // Now compute the matrix elements of linop between the orthonormal
-    // set of vectors.
-    ///////////////////////////////////////////////////////////////////////
-    FineField phaV(grid); // Phased block basis vector
-    FineField MphaV(grid);// Matrix applied
-    std::vector<FineComplexField> phaF(npoint,grid);
-    std::vector<CoarseComplexField> pha(npoint,CoarseGrid);
-    
-    CoarseVector coarseInner(CoarseGrid);
-    
-    tphase=-usecond();
-    typedef typename CComplex::scalar_type SComplex;
-    FineComplexField one(grid); one=SComplex(1.0);
-    FineComplexField zz(grid); zz = Zero();
-    for(int p=0;p<npoint;p++){ // Loop over momenta in npoint
-      /////////////////////////////////////////////////////
-      // Stick a phase on every block
-      /////////////////////////////////////////////////////
-      CoarseComplexField coor(CoarseGrid);
-      pha[p]=Zero();
-      for(int mu=0;mu<Nd;mu++){
-	LatticeCoordinate(coor,mu);
-	RealD TwoPiL =  M_PI * 2.0/ clatt[mu];
-	pha[p] = pha[p] + (TwoPiL * geom_srhs.shifts[p][mu]) * coor;
-      }
-      pha[p]  =exp(pha[p]*ci);	
-
-      blockZAXPY(phaF[p],pha[p],one,zz);
-    }
-    tphase+=usecond();
-
-    // Could save on temporary storage here
-    std::vector<CoarseMatrix> _A;
-    _A.resize(geom_srhs.npoint,CoarseGrid);
-
-    // Count use small chunks than npoint == 81 and save memory
-    int batch = 9;
-    std::vector<FineField>    _MphaV(batch,grid);
-    std::vector<CoarseVector> TmpProj(batch,CoarseGrid);
-
-    std::vector<CoarseVector> ComputeProj(npoint,CoarseGrid);
-    CoarseVector          FT(CoarseGrid);
-    for(int i=0;i<nbasis;i++){// Loop over basis vectors
-      std::cout << GridLogMessage<< "CoarsenMatrixColoured vec "<<i<<"/"<<nbasis<< std::endl;
-
-      //      std::cout << GridLogMessage << " phasing the fine vector "<<std::endl;
-      // Fixme : do this in batches
-      for(int p=0;p<npoint;p+=batch){ // Loop over momenta in npoint
-
-	for(int b=0;b<MIN(batch,npoint-p);b++){
-	  tphaseBZ-=usecond();
-	  phaV = phaF[p+b]*Subspace.subspace[i];
-	  tphaseBZ+=usecond();
-
-	  /////////////////////////////////////////////////////////////////////
-	  // Multiple phased subspace vector by matrix and project to subspace
-	  // Remove local bulk phase to leave relative phases
-	  /////////////////////////////////////////////////////////////////////
-	  // Memory footprint was an issue
-	  tmat-=usecond();
-	  linop.Op(phaV,MphaV);
-	  _MphaV[b] = MphaV;
-	  tmat+=usecond();
-	}      
-
-	//	std::cout << GridLogMessage << " Calling block project "<<std::endl;
-	tproj-=usecond();
-	Projector.blockProject(_MphaV,TmpProj);
-	tproj+=usecond();
-	
-	//	std::cout << GridLogMessage << " conj phasing the coarse vectors "<<std::endl;
-	for(int b=0;b<MIN(batch,npoint-p);b++){
-	  ComputeProj[p+b] = conjugate(pha[p+b])*TmpProj[b];
-	}
-      }
-
-      // Could do this with a block promote or similar BLAS call via the MultiRHSBlockProjector with a const matrix.
-      
-      // std::cout << GridLogMessage << " Starting FT inv "<<std::endl;
-      tinv-=usecond();
-      for(int k=0;k<npoint;k++){
-	FT = Zero();
-	// 81 kernel calls as many ComputeProj vectors
-	// Could fuse with a vector of views, but ugly
-	// Could unroll the expression and run fewer kernels -- much more attractive
-	// Could also do non blocking.
-#if 0	
-	for(int l=0;l<npoint;l++){
-	  FT= FT+ invMkl(l,k)*ComputeProj[l];
-	}
-#else
-	const int radix = 9;
-	int ll;
-	for(ll=0;ll+radix-1<npoint;ll+=radix){
-	  // When ll = npoint-radix, ll+radix-1 = npoint-1, and we do it all.
-	  FT = FT 
-	    + invMkl(ll+0,k)*ComputeProj[ll+0]
-	    + invMkl(ll+1,k)*ComputeProj[ll+1]
-	    + invMkl(ll+2,k)*ComputeProj[ll+2]
-	    + invMkl(ll+3,k)*ComputeProj[ll+3]
-	    + invMkl(ll+4,k)*ComputeProj[ll+4]
-	    + invMkl(ll+5,k)*ComputeProj[ll+5]
-	    + invMkl(ll+6,k)*ComputeProj[ll+6]
-	    + invMkl(ll+7,k)*ComputeProj[ll+7]
-	    + invMkl(ll+8,k)*ComputeProj[ll+8];
-	}
-	for(int l=ll;l<npoint;l++){
-	  FT= FT+ invMkl(l,k)*ComputeProj[l];
-	}
-#endif
-      
-	// 1 kernel call -- must be cheaper
-	int osites=CoarseGrid->oSites();
-	autoView( A_v  , _A[k], AcceleratorWrite);
-	autoView( FT_v  , FT, AcceleratorRead);
-	accelerator_for(sss, osites, 1, {
-	    for(int j=0;j<nbasis;j++){
-	      A_v[sss](i,j) = FT_v[sss](j);
-	    }
-        });
-      }
-      tinv+=usecond();
-    }
-
-    // Only needed if nonhermitian
-    //    if ( ! hermitian ) {
-    //      std::cout << GridLogMessage<<"PopulateAdag  "<<std::endl;
-    //      PopulateAdag();
-    //    }
-    // Need to write something to populate Adag from A
-    //    std::cout << GridLogMessage << " Calling GridtoBLAS "<<std::endl;
-    for(int p=0;p<geom_srhs.npoint;p++){
-      GridtoBLAS(_A[p],BLAS_A[p]);
-    }
-    std::cout << GridLogMessage<<"CoarsenOperator phase  "<<tphase<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator phaseBZ "<<tphaseBZ<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator mat    "<<tmat <<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator proj   "<<tproj<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"CoarsenOperator inv    "<<tinv<<" us"<<std::endl;
-#endif
-  }
-  void Mdag(const CoarseVector &in, CoarseVector &out)
-  {
-    this->M(in,out);
-  }
-  void M (const CoarseVector &in, CoarseVector &out)
-  {
-    //    std::cout << GridLogMessage << "New Mrhs coarse"<<std::endl;
-    conformable(CoarseGrid(),in.Grid());
-    conformable(in.Grid(),out.Grid());
-    out.Checkerboard() = in.Checkerboard();
-
-    RealD t_tot;
-    RealD t_exch;
-    RealD t_GtoB;
-    RealD t_BtoG;
-    RealD t_mult;
-
-    t_tot=-usecond();
-    CoarseVector tin=in;
-    t_exch=-usecond();
-    CoarseVector pin = Cell.ExchangePeriodic(tin); //padded input
-    t_exch+=usecond();
-
-    CoarseVector pout(pin.Grid());
-
-    int npoint = geom.npoint;
-    typedef calcMatrix* Aview;
-    typedef LatticeView<Cvec> Vview;
-      
-    const int Nsimd = CComplex::Nsimd();
-
-    int64_t nrhs  =pin.Grid()->GlobalDimensions()[0];
-    GRID_ASSERT(nrhs>=1);
-
-    RealD flops,bytes;
-    int64_t osites=in.Grid()->oSites(); // unpadded
-    int64_t unpadded_vol = CoarseGrid()->lSites()/nrhs;
-    
-    flops = 1.0* npoint * nbasis * nbasis * 8.0 * osites * CComplex::Nsimd();
-    bytes = 1.0*osites*sizeof(siteMatrix)*npoint/pin.Grid()->GlobalDimensions()[0]
-          + 2.0*osites*sizeof(siteVector)*npoint;
-    
-
-    t_GtoB=-usecond();
-    GridtoBLAS(pin,BLAS_B);
-    t_GtoB+=usecond();
-
-    GridBLAS BLAS;
-
-    t_mult=-usecond();
-    for(int p=0;p<geom.npoint;p++){
-      RealD c = 1.0;
-      if (p==0) c = 0.0;
-      ComplexD beta(c);
-
-      BLAS.gemmBatched(nbasis,nrhs,nbasis,
-		       ComplexD(1.0),
-		       BLAS_AP[p], 
-		       BLAS_BP[p], 
-		       ComplexD(c), 
-		       BLAS_CP);
-    }
-    BLAS.synchronise();
-    t_mult+=usecond();
-
-    t_BtoG=-usecond();
-    BLAStoGrid(out,BLAS_C);
-    t_BtoG+=usecond();
-    t_tot+=usecond();
-    /*
-    std::cout << GridLogMessage << "New Mrhs coarse DONE "<<std::endl;
-    std::cout << GridLogMessage<<"Coarse Mult exch "<<t_exch<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"Coarse Mult mult "<<t_mult<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"Coarse Mult GtoB  "<<t_GtoB<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"Coarse Mult BtoG  "<<t_BtoG<<" us"<<std::endl;
-    std::cout << GridLogMessage<<"Coarse Mult tot  "<<t_tot<<" us"<<std::endl;
-    */
-    //    std::cout << GridLogMessage<<std::endl;
-    //    std::cout << GridLogMessage<<"Coarse Kernel flops "<< flops<<std::endl;
-    //    std::cout << GridLogMessage<<"Coarse Kernel flop/s "<< flops/t_mult<<" mflop/s"<<std::endl;
-    //    std::cout << GridLogMessage<<"Coarse Kernel bytes/s "<< bytes/t_mult/1000<<" GB/s"<<std::endl;
-    //    std::cout << GridLogMessage<<"Coarse overall flops/s "<< flops/t_tot<<" mflop/s"<<std::endl;
-    //    std::cout << GridLogMessage<<"Coarse total bytes   "<< bytes/1e6<<" MB"<<std::endl;
-  };
-  virtual  void Mdiag    (const Field &in, Field &out){ GRID_ASSERT(0);};
-  virtual  void Mdir     (const Field &in, Field &out,int dir, int disp){assert(0);};
-  virtual  void MdirAll  (const Field &in, std::vector<Field> &out){assert(0);};
-};
-  
-NAMESPACE_END(Grid);

Grid/algorithms/multigrid/Geometry.h

@@ -1,238 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/GeneralCoarsenedMatrix.h
-
-    Copyright (C) 2015
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-NAMESPACE_BEGIN(Grid);
-
-
-/////////////////////////////////////////////////////////////////
-// Geometry class in cartesian case
-/////////////////////////////////////////////////////////////////
-
-class Geometry {
-public:
-  int npoint;
-  int base;
-  std::vector<int> directions   ;
-  std::vector<int> displacements;
-  std::vector<int> points_dagger;
-
-  Geometry(int _d)  {
-    
-    base = (_d==5) ? 1:0;
-
-    // make coarse grid stencil for 4d , not 5d
-    if ( _d==5 ) _d=4;
-
-    npoint = 2*_d+1;
-    directions.resize(npoint);
-    displacements.resize(npoint);
-    points_dagger.resize(npoint);
-    for(int d=0;d<_d;d++){
-      directions[d   ] = d+base;
-      directions[d+_d] = d+base;
-      displacements[d  ] = +1;
-      displacements[d+_d]= -1;
-      points_dagger[d   ] = d+_d;
-      points_dagger[d+_d] = d;
-    }
-    directions   [2*_d]=0;
-    displacements[2*_d]=0;
-    points_dagger[2*_d]=2*_d;
-  }
-
-  int point(int dir, int disp) {
-    GRID_ASSERT(disp == -1 || disp == 0 || disp == 1);
-    GRID_ASSERT(base+0 <= dir && dir < base+4);
-
-    // directions faster index = new indexing
-    // 4d (base = 0):
-    // point 0  1  2  3  4  5  6  7  8
-    // dir   0  1  2  3  0  1  2  3  0
-    // disp +1 +1 +1 +1 -1 -1 -1 -1  0
-    // 5d (base = 1):
-    // point 0  1  2  3  4  5  6  7  8
-    // dir   1  2  3  4  1  2  3  4  0
-    // disp +1 +1 +1 +1 -1 -1 -1 -1  0
-
-    // displacements faster index = old indexing
-    // 4d (base = 0):
-    // point 0  1  2  3  4  5  6  7  8
-    // dir   0  0  1  1  2  2  3  3  0
-    // disp +1 -1 +1 -1 +1 -1 +1 -1  0
-    // 5d (base = 1):
-    // point 0  1  2  3  4  5  6  7  8
-    // dir   1  1  2  2  3  3  4  4  0
-    // disp +1 -1 +1 -1 +1 -1 +1 -1  0
-
-    if(dir == 0 and disp == 0)
-      return 8;
-    else // New indexing
-      return (1 - disp) / 2 * 4 + dir - base;
-    // else // Old indexing
-    //   return (4 * (dir - base) + 1 - disp) / 2;
-  }
-};
-
-/////////////////////////////////////////////////////////////////
-// Less local equivalent of Geometry class in cartesian case
-/////////////////////////////////////////////////////////////////
-class NonLocalStencilGeometry {
-public:
-  //  int depth;
-  int skip;
-  int hops;
-  int npoint;
-  std::vector<Coordinate> shifts;
-  Coordinate stencil_size;
-  Coordinate stencil_lo;
-  Coordinate stencil_hi;
-  GridCartesian *grid;
-  GridCartesian *Grid() {return grid;};
-  int Depth(void){return 1;};   // Ghost zone depth
-  int Hops(void){return hops;}; // # of hops=> level of corner fill in in stencil
-  int DimSkip(void){return skip;};
-
-  virtual ~NonLocalStencilGeometry() {};
-
-  int  Reverse(int point)
-  {
-    int Nd = Grid()->Nd();
-    Coordinate shft = shifts[point];
-    Coordinate rev(Nd);
-    for(int mu=0;mu<Nd;mu++) rev[mu]= -shft[mu];
-    for(int p=0;p<npoint;p++){
-      if(rev==shifts[p]){
-	return p;
-      }
-    }
-    GRID_ASSERT(0);
-    return -1;
-  }
-  void BuildShifts(void)
-  {
-    this->shifts.resize(0);
-    int Nd = this->grid->Nd();
-
-    int dd = this->DimSkip();
-    for(int s0=this->stencil_lo[dd+0];s0<=this->stencil_hi[dd+0];s0++){
-    for(int s1=this->stencil_lo[dd+1];s1<=this->stencil_hi[dd+1];s1++){
-    for(int s2=this->stencil_lo[dd+2];s2<=this->stencil_hi[dd+2];s2++){
-    for(int s3=this->stencil_lo[dd+3];s3<=this->stencil_hi[dd+3];s3++){
-      Coordinate sft(Nd,0);
-      sft[dd+0] = s0;
-      sft[dd+1] = s1;
-      sft[dd+2] = s2;
-      sft[dd+3] = s3;
-      int nhops = abs(s0)+abs(s1)+abs(s2)+abs(s3);
-      if(nhops<=this->hops) this->shifts.push_back(sft);
-    }}}}
-    this->npoint = this->shifts.size();
-    std::cout << GridLogMessage << "NonLocalStencilGeometry has "<< this->npoint << " terms in stencil "<<std::endl;
-  }
-  
-  NonLocalStencilGeometry(GridCartesian *_coarse_grid,int _hops,int _skip) : grid(_coarse_grid), hops(_hops), skip(_skip)
-  {
-    Coordinate latt = grid->GlobalDimensions();
-    stencil_size.resize(grid->Nd());
-    stencil_lo.resize(grid->Nd());
-    stencil_hi.resize(grid->Nd());
-    for(int d=0;d<grid->Nd();d++){
-     if ( latt[d] == 1 ) {
-      stencil_lo[d] = 0;
-      stencil_hi[d] = 0;
-      stencil_size[d]= 1;
-     } else if ( latt[d] == 2 ) {
-      stencil_lo[d] = -1;
-      stencil_hi[d] = 0;
-      stencil_size[d]= 2;
-     } else if ( latt[d] > 2 ) {
-       stencil_lo[d] = -1;
-       stencil_hi[d] =  1;
-       stencil_size[d]= 3;
-     }
-    }
-    this->BuildShifts();
-  };
-
-};
-
-// Need to worry about red-black now
-class NonLocalStencilGeometry4D : public NonLocalStencilGeometry {
-public:
-  virtual int DerivedDimSkip(void) { return 0;};
-  NonLocalStencilGeometry4D(GridCartesian *Coarse,int _hops) : NonLocalStencilGeometry(Coarse,_hops,0) { };
-  virtual ~NonLocalStencilGeometry4D() {};
-};
-class NonLocalStencilGeometry5D : public NonLocalStencilGeometry {
-public:
-  virtual int DerivedDimSkip(void) { return 1; }; 
-  NonLocalStencilGeometry5D(GridCartesian *Coarse,int _hops) : NonLocalStencilGeometry(Coarse,_hops,1)  { };
-  virtual ~NonLocalStencilGeometry5D() {};
-};
-/*
- * Bunch of different options classes
- */
-class NextToNextToNextToNearestStencilGeometry4D : public NonLocalStencilGeometry4D {
-public:
-  NextToNextToNextToNearestStencilGeometry4D(GridCartesian *Coarse) :  NonLocalStencilGeometry4D(Coarse,4)
-  {
-  };
-};
-class NextToNextToNextToNearestStencilGeometry5D : public  NonLocalStencilGeometry5D {
-public:
-  NextToNextToNextToNearestStencilGeometry5D(GridCartesian *Coarse) :  NonLocalStencilGeometry5D(Coarse,4)
-  {
-  };
-};
-class NextToNearestStencilGeometry4D : public  NonLocalStencilGeometry4D {
-public:
-  NextToNearestStencilGeometry4D(GridCartesian *Coarse) :  NonLocalStencilGeometry4D(Coarse,2)
-  {
-  };
-};
-class NextToNearestStencilGeometry5D : public  NonLocalStencilGeometry5D {
-public:
-  NextToNearestStencilGeometry5D(GridCartesian *Coarse) :  NonLocalStencilGeometry5D(Coarse,2)
-  {
-  };
-};
-class NearestStencilGeometry4D : public  NonLocalStencilGeometry4D {
-public:
-  NearestStencilGeometry4D(GridCartesian *Coarse) :  NonLocalStencilGeometry4D(Coarse,1)
-  {
-  };
-};
-class NearestStencilGeometry5D : public  NonLocalStencilGeometry5D {
-public:
-  NearestStencilGeometry5D(GridCartesian *Coarse) :  NonLocalStencilGeometry5D(Coarse,1)
-  {
-  };
-};
-
-NAMESPACE_END(Grid);

Grid/algorithms/multigrid/MultiGrid.h

@@ -1,34 +0,0 @@
-    /*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid
-
-    Source file: Grid/algorithms/multigrid/MultiGrid.h
-
-    Copyright (C) 2023
-
-Author: Peter Boyle <pboyle@bnl.gov>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-    *************************************************************************************/
-    /*  END LEGAL */
-#pragma once
-
-#include <Grid/algorithms/multigrid/Aggregates.h>
-#include <Grid/algorithms/multigrid/Geometry.h>
-#include <Grid/algorithms/multigrid/CoarsenedMatrix.h>
-#include <Grid/algorithms/multigrid/GeneralCoarsenedMatrix.h>
-#include <Grid/algorithms/multigrid/GeneralCoarsenedMatrixMultiRHS.h>

Grid/allocator/AlignedAllocator.h

@@ -54,10 +54,7 @@ public:
     size_type bytes = __n*sizeof(_Tp);
     profilerAllocate(bytes);
     _Tp *ptr = (_Tp*) MemoryManager::CpuAllocate(bytes);
-    if ( (_Tp*)ptr == (_Tp *) NULL ) {
+    assert( ( (_Tp*)ptr != (_Tp *)NULL ) );
-      printf("Grid CPU Allocator got NULL for %lu bytes\n",(unsigned long) bytes );
-    }
-    GRID_ASSERT( ( (_Tp*)ptr != (_Tp *)NULL ) );
     return ptr;
   }
 
@@ -69,7 +66,7 @@ public:
   }
 
   // FIXME: hack for the copy constructor: it must be avoided to avoid single thread loop
-  void construct(pointer __p, const _Tp& __val) { };
+  void construct(pointer __p, const _Tp& __val) { assert(0);};
   void construct(pointer __p) { };
   void destroy(pointer __p) { };
 };
@@ -103,10 +100,7 @@ public:
     size_type bytes = __n*sizeof(_Tp);
     profilerAllocate(bytes);
     _Tp *ptr = (_Tp*) MemoryManager::SharedAllocate(bytes);
-    if ( (_Tp*)ptr == (_Tp *) NULL ) {
+    assert( ( (_Tp*)ptr != (_Tp *)NULL ) );
-      printf("Grid Shared Allocator got NULL for %lu bytes\n",(unsigned long) bytes );
-    }
-    GRID_ASSERT( ( (_Tp*)ptr != (_Tp *)NULL ) );
     return ptr;
   }
 
@@ -151,10 +145,7 @@ public:
     size_type bytes = __n*sizeof(_Tp);
     profilerAllocate(bytes);
     _Tp *ptr = (_Tp*) MemoryManager::AcceleratorAllocate(bytes);
-    if ( (_Tp*)ptr == (_Tp *) NULL ) {
+    assert( ( (_Tp*)ptr != (_Tp *)NULL ) );
-      printf("Grid Device Allocator got NULL for %lu bytes\n",(unsigned long) bytes );
-    }
-    GRID_ASSERT( ( (_Tp*)ptr != (_Tp *)NULL ) );
     return ptr;
   }
 
@@ -174,48 +165,18 @@ template<typename _Tp>  inline bool operator!=(const devAllocator<_Tp>&, const d
 ////////////////////////////////////////////////////////////////////////////////
 // Template typedefs
 ////////////////////////////////////////////////////////////////////////////////
-template<class T> using hostVector          = std::vector<T,alignedAllocator<T> >;           // Needs autoview
+#ifdef ACCELERATOR_CSHIFT
-template<class T> using Vector              = std::vector<T,uvmAllocator<T> >;               // Really want to deprecate
+// Cshift on device
-template<class T> using uvmVector           = std::vector<T,uvmAllocator<T> >;               // auto migrating page
+template<class T> using cshiftAllocator = devAllocator<T>;
-template<class T> using deviceVector        = std::vector<T,devAllocator<T> >;               // device vector
+#else
+// Cshift on host
+template<class T> using cshiftAllocator = std::allocator<T>;
+#endif
 
-/*
+template<class T> using Vector        = std::vector<T,uvmAllocator<T> >;           
-template<class T> class vecView
+template<class T> using stencilVector = std::vector<T,alignedAllocator<T> >;           
-{
+template<class T> using commVector = std::vector<T,devAllocator<T> >;
- protected:
+template<class T> using cshiftVector = std::vector<T,cshiftAllocator<T> >;
-  T * data;
-  uint64_t size;
-  ViewMode mode;
-  void * cpu_ptr;
- public:
-  // Rvalue accessor
-  accelerator_inline T & operator[](size_t i) const { return this->data[i]; };
-  vecView(Vector<T> &refer_to_me,ViewMode _mode)
-  {
-    cpu_ptr = &refer_to_me[0];
-    size = refer_to_me.size();
-    mode = _mode;
-    data =(T *) MemoryManager::ViewOpen(cpu_ptr,
-					size*sizeof(T),
-					mode,
-					AdviseDefault);
-  }
-  void ViewClose(void)
-  { // Inform the manager
-    MemoryManager::ViewClose(this->cpu_ptr,this->mode);    
-  }
-};
-
-template<class T> vecView<T> VectorView(Vector<T> &vec,ViewMode _mode)
-{
-  vecView<T> ret(vec,_mode); // does the open
-  return ret;                // must be closed
-}
-
-#define autoVecView(v_v,v,mode)					\
-  auto v_v = VectorView(v,mode);				\
-  ViewCloser<decltype(v_v)> _autoView##v_v(v_v);
-*/
 
 NAMESPACE_END(Grid);
 

Grid/allocator/MemoryManager.cc

@@ -4,194 +4,108 @@ NAMESPACE_BEGIN(Grid);
 
 /*Allocation types, saying which pointer cache should be used*/
 #define Cpu      (0)
-#define CpuHuge  (1)
+#define CpuSmall (1)
-#define CpuSmall (2)
+#define Acc      (2)
-#define Acc      (3)
+#define AccSmall (3)
-#define AccHuge  (4)
+#define Shared   (4)
-#define AccSmall (5)
+#define SharedSmall (5)
-#define Shared   (6)
-#define SharedHuge  (7)
-#define SharedSmall (8)
-#undef GRID_MM_VERBOSE 
 uint64_t total_shared;
 uint64_t total_device;
 uint64_t total_host;;
-
-#if defined(__has_feature)
-#if __has_feature(leak_sanitizer)
-#define ASAN_LEAK_CHECK
-#endif
-#endif
-
-#ifdef ASAN_LEAK_CHECK
-#include <sanitizer/asan_interface.h>
-#include <sanitizer/common_interface_defs.h>
-#include <sanitizer/lsan_interface.h>
-#define LEAK_CHECK(A) { __lsan_do_recoverable_leak_check(); }
-#else
-#define LEAK_CHECK(A) { }
-#endif
-
-void MemoryManager::DisplayMallinfo(void)
-{
-#ifdef __linux__
-  struct mallinfo mi; // really want mallinfo2, but glibc version isn't uniform
-  
-  mi = mallinfo();
-
-  std::cout << "MemoryManager: Total non-mmapped bytes (arena):       "<< (size_t)mi.arena<<std::endl;
-  std::cout << "MemoryManager: # of free chunks (ordblks):            "<< (size_t)mi.ordblks<<std::endl;
-  std::cout << "MemoryManager: # of free fastbin blocks (smblks):     "<< (size_t)mi.smblks<<std::endl;
-  std::cout << "MemoryManager: # of mapped regions (hblks):           "<< (size_t)mi.hblks<<std::endl;
-  std::cout << "MemoryManager: Bytes in mapped regions (hblkhd):      "<< (size_t)mi.hblkhd<<std::endl;
-  std::cout << "MemoryManager: Max. total allocated space (usmblks):  "<< (size_t)mi.usmblks<<std::endl;
-  std::cout << "MemoryManager: Free bytes held in fastbins (fsmblks): "<< (size_t)mi.fsmblks<<std::endl;
-  std::cout << "MemoryManager: Total allocated space (uordblks):      "<< (size_t)mi.uordblks<<std::endl;
-  std::cout << "MemoryManager: Total free space (fordblks):           "<< (size_t)mi.fordblks<<std::endl;
-  std::cout << "MemoryManager: Topmost releasable block (keepcost):   "<< (size_t)mi.keepcost<<std::endl;
-#endif
-  LEAK_CHECK();
- 
-}
-
 void MemoryManager::PrintBytes(void)
 {
-  std::cout << " MemoryManager : ------------------------------------ "<<std::endl;
+  std::cout << " MemoryManager : "<<total_shared<<" shared      bytes "<<std::endl;
-  std::cout << " MemoryManager : PrintBytes "<<std::endl;
+  std::cout << " MemoryManager : "<<total_device<<" accelerator bytes "<<std::endl;
-  std::cout << " MemoryManager : ------------------------------------ "<<std::endl;
+  std::cout << " MemoryManager : "<<total_host  <<" cpu         bytes "<<std::endl;
-  std::cout << " MemoryManager : "<<(total_shared>>20)<<" shared      Mbytes "<<std::endl;
-  std::cout << " MemoryManager : "<<(total_device>>20)<<" accelerator Mbytes "<<std::endl;
-  std::cout << " MemoryManager : "<<(total_host>>20)  <<" cpu         Mbytes "<<std::endl;
-  uint64_t cacheBytes;
-  cacheBytes = CacheBytes[Cpu];
-  std::cout << " MemoryManager : "<<(cacheBytes>>20) <<" cpu cache Mbytes "<<std::endl;
-  cacheBytes = CacheBytes[Acc];
-  std::cout << " MemoryManager : "<<(cacheBytes>>20) <<" acc cache Mbytes "<<std::endl;
-  cacheBytes = CacheBytes[Shared];
-  std::cout << " MemoryManager : "<<(cacheBytes>>20) <<" shared cache Mbytes "<<std::endl;
-  
-#ifdef GRID_CUDA
-  cuda_mem();
-#endif
-  DisplayMallinfo();
 }
 
-uint64_t MemoryManager::DeviceCacheBytes() { return CacheBytes[Acc] + CacheBytes[AccHuge] + CacheBytes[AccSmall]; }
-uint64_t MemoryManager::HostCacheBytes()   { return CacheBytes[Cpu] + CacheBytes[CpuHuge] + CacheBytes[CpuSmall]; }
-
 //////////////////////////////////////////////////////////////////////
 // Data tables for recently freed pooiniter caches
 //////////////////////////////////////////////////////////////////////
 MemoryManager::AllocationCacheEntry MemoryManager::Entries[MemoryManager::NallocType][MemoryManager::NallocCacheMax];
 int MemoryManager::Victim[MemoryManager::NallocType];
-int MemoryManager::Ncache[MemoryManager::NallocType] = { 2, 0, 8, 8, 0, 16, 8, 0, 16 };
+int MemoryManager::Ncache[MemoryManager::NallocType] = { 8, 32, 8, 32, 8, 32 };
-uint64_t MemoryManager::CacheBytes[MemoryManager::NallocType];
+
 //////////////////////////////////////////////////////////////////////
 // Actual allocation and deallocation utils
 //////////////////////////////////////////////////////////////////////
 void *MemoryManager::AcceleratorAllocate(size_t bytes)
 {
-  total_device+=bytes;
   void *ptr = (void *) Lookup(bytes,Acc);
   if ( ptr == (void *) NULL ) {
     ptr = (void *) acceleratorAllocDevice(bytes);
+    total_device+=bytes;
   }
-#ifdef GRID_MM_VERBOSE
-  std::cout <<"AcceleratorAllocate "<<std::endl;
-  PrintBytes();
-#endif
   return ptr;
 }
 void  MemoryManager::AcceleratorFree    (void *ptr,size_t bytes)
 {
-  total_device-=bytes;
   void *__freeme = Insert(ptr,bytes,Acc);
   if ( __freeme ) {
     acceleratorFreeDevice(__freeme);
+    total_device-=bytes;
+//       PrintBytes();
   }
-#ifdef GRID_MM_VERBOSE
-  std::cout <<"AcceleratorFree "<<std::endl;
-  PrintBytes();
-#endif
 }
 void *MemoryManager::SharedAllocate(size_t bytes)
 {
-  total_shared+=bytes;
   void *ptr = (void *) Lookup(bytes,Shared);
   if ( ptr == (void *) NULL ) {
     ptr = (void *) acceleratorAllocShared(bytes);
+    total_shared+=bytes;
+        std::cout <<GridLogMessage<<"AcceleratorAllocate: allocated Shared pointer "<<std::hex<<ptr<<std::dec<<std::endl;
+//        PrintBytes();
   }
-#ifdef GRID_MM_VERBOSE
-  std::cout <<"SharedAllocate "<<std::endl;
-  PrintBytes();
-#endif
   return ptr;
 }
 void  MemoryManager::SharedFree    (void *ptr,size_t bytes)
 {
-  total_shared-=bytes;
   void *__freeme = Insert(ptr,bytes,Shared);
   if ( __freeme ) {
     acceleratorFreeShared(__freeme);
+    total_shared-=bytes;
+    //    PrintBytes();
   }
-#ifdef GRID_MM_VERBOSE
-  std::cout <<"SharedFree "<<std::endl;
-  PrintBytes();
-#endif
 }
 #ifdef GRID_UVM
 void *MemoryManager::CpuAllocate(size_t bytes)
 {
-  total_host+=bytes;
   void *ptr = (void *) Lookup(bytes,Cpu);
   if ( ptr == (void *) NULL ) {
     ptr = (void *) acceleratorAllocShared(bytes);
+    total_host+=bytes;
+//    std::cout << GridLogMessage<< "MemoryManager:: CpuAllocate  total_host= "<<total_host<<" "<< ptr << std::endl;
   }
-#ifdef GRID_MM_VERBOSE
-  std::cout <<"CpuAllocate "<<std::endl;
-  PrintBytes();
-#endif
   return ptr;
 }
 void  MemoryManager::CpuFree    (void *_ptr,size_t bytes)
 {
-  total_host-=bytes;
   NotifyDeletion(_ptr);
   void *__freeme = Insert(_ptr,bytes,Cpu);
   if ( __freeme ) { 
     acceleratorFreeShared(__freeme);
+//    std::cout << GridLogMessage<< "MemoryManager:: CpuFree  total_host= "<<total_host<<" "<< __freeme << std::endl;
+    total_host-=bytes;
   }
-#ifdef GRID_MM_VERBOSE
-  std::cout <<"CpuFree "<<std::endl;
-  PrintBytes();
-#endif
 }
 #else
 void *MemoryManager::CpuAllocate(size_t bytes)
 {
-  total_host+=bytes;
   void *ptr = (void *) Lookup(bytes,Cpu);
   if ( ptr == (void *) NULL ) {
     ptr = (void *) acceleratorAllocCpu(bytes);
+    total_host+=bytes;
   }
-#ifdef GRID_MM_VERBOSE
-  std::cout <<"CpuAllocate "<<std::endl;
-  PrintBytes();
-#endif
   return ptr;
 }
 void  MemoryManager::CpuFree    (void *_ptr,size_t bytes)
 {
-  total_host-=bytes;
   NotifyDeletion(_ptr);
   void *__freeme = Insert(_ptr,bytes,Cpu);
   if ( __freeme ) { 
     acceleratorFreeCpu(__freeme);
+    total_host-=bytes;
   }
-#ifdef GRID_MM_VERBOSE
-  std::cout <<"CpuFree "<<std::endl;
-  PrintBytes();
-#endif
 }
 #endif
 
@@ -203,6 +117,7 @@ void MemoryManager::Init(void)
 
   char * str;
   int Nc;
+  int NcS;
   
   str= getenv("GRID_ALLOC_NCACHE_LARGE");
   if ( str ) {
@@ -214,16 +129,6 @@ void MemoryManager::Init(void)
     }
   }
 
-  str= getenv("GRID_ALLOC_NCACHE_HUGE");
-  if ( str ) {
-    Nc = atoi(str);
-    if ( (Nc>=0) && (Nc < NallocCacheMax)) {
-      Ncache[CpuHuge]=Nc;
-      Ncache[AccHuge]=Nc;
-      Ncache[SharedHuge]=Nc;
-    }
-  }
-
   str= getenv("GRID_ALLOC_NCACHE_SMALL");
   if ( str ) {
     Nc = atoi(str);
@@ -244,9 +149,7 @@ void MemoryManager::InitMessage(void) {
   
   std::cout << GridLogMessage<< "MemoryManager::Init() setting up"<<std::endl;
 #ifdef ALLOCATION_CACHE
-  std::cout << GridLogMessage<< "MemoryManager::Init() cache pool for recent host   allocations: SMALL "<<Ncache[CpuSmall]<<" LARGE "<<Ncache[Cpu]<<" HUGE "<<Ncache[CpuHuge]<<std::endl;
+  std::cout << GridLogMessage<< "MemoryManager::Init() cache pool for recent allocations: SMALL "<<Ncache[CpuSmall]<<" LARGE "<<Ncache[Cpu]<<std::endl;
-  std::cout << GridLogMessage<< "MemoryManager::Init() cache pool for recent device allocations: SMALL "<<Ncache[AccSmall]<<" LARGE "<<Ncache[Acc]<<" Huge "<<Ncache[AccHuge]<<std::endl;
-  std::cout << GridLogMessage<< "MemoryManager::Init() cache pool for recent shared allocations: SMALL "<<Ncache[SharedSmall]<<" LARGE "<<Ncache[Shared]<<" Huge "<<Ncache[SharedHuge]<<std::endl;
 #endif
   
 #ifdef GRID_UVM
@@ -278,25 +181,21 @@ void MemoryManager::InitMessage(void) {
 void *MemoryManager::Insert(void *ptr,size_t bytes,int type) 
 {
 #ifdef ALLOCATION_CACHE
-  int cache;
+  bool small = (bytes < GRID_ALLOC_SMALL_LIMIT);
-  if      (bytes < GRID_ALLOC_SMALL_LIMIT) cache = type + 2;
+  int cache = type + small;
-  else if (bytes >= GRID_ALLOC_HUGE_LIMIT) cache = type + 1;
+  return Insert(ptr,bytes,Entries[cache],Ncache[cache],Victim[cache]);  
-  else                                     cache = type;
-
-  return Insert(ptr,bytes,Entries[cache],Ncache[cache],Victim[cache],CacheBytes[cache]);  
 #else
   return ptr;
 #endif
 }
 
-void *MemoryManager::Insert(void *ptr,size_t bytes,AllocationCacheEntry *entries,int ncache,int &victim, uint64_t &cacheBytes) 
+void *MemoryManager::Insert(void *ptr,size_t bytes,AllocationCacheEntry *entries,int ncache,int &victim) 
 {
+  assert(ncache>0);
 #ifdef GRID_OMP
-  GRID_ASSERT(omp_in_parallel()==0);
+  assert(omp_in_parallel()==0);
 #endif 
 
-  if (ncache == 0) return ptr;
-
   void * ret = NULL;
   int v = -1;
 
@@ -314,7 +213,6 @@ void *MemoryManager::Insert(void *ptr,size_t bytes,AllocationCacheEntry *entries
 
   if ( entries[v].valid ) {
     ret = entries[v].address;
-    cacheBytes -= entries[v].bytes;
     entries[v].valid = 0;
     entries[v].address = NULL;
     entries[v].bytes = 0;
@@ -323,7 +221,6 @@ void *MemoryManager::Insert(void *ptr,size_t bytes,AllocationCacheEntry *entries
   entries[v].address=ptr;
   entries[v].bytes  =bytes;
   entries[v].valid  =1;
-  cacheBytes += bytes;
 
   return ret;
 }
@@ -331,26 +228,23 @@ void *MemoryManager::Insert(void *ptr,size_t bytes,AllocationCacheEntry *entries
 void *MemoryManager::Lookup(size_t bytes,int type)
 {
 #ifdef ALLOCATION_CACHE
-  int cache;
+  bool small = (bytes < GRID_ALLOC_SMALL_LIMIT);
-  if      (bytes < GRID_ALLOC_SMALL_LIMIT) cache = type + 2;
+  int cache = type+small;
-  else if (bytes >= GRID_ALLOC_HUGE_LIMIT) cache = type + 1;
+  return Lookup(bytes,Entries[cache],Ncache[cache]);
-  else                                     cache = type;
-
-  return Lookup(bytes,Entries[cache],Ncache[cache],CacheBytes[cache]);
 #else
   return NULL;
 #endif
 }
 
-void *MemoryManager::Lookup(size_t bytes,AllocationCacheEntry *entries,int ncache,uint64_t & cacheBytes) 
+void *MemoryManager::Lookup(size_t bytes,AllocationCacheEntry *entries,int ncache) 
 {
+  assert(ncache>0);
 #ifdef GRID_OMP
-  GRID_ASSERT(omp_in_parallel()==0);
+  assert(omp_in_parallel()==0);
 #endif 
   for(int e=0;e<ncache;e++){
     if ( entries[e].valid && ( entries[e].bytes == bytes ) ) {
       entries[e].valid = 0;
-      cacheBytes -= entries[e].bytes;
       return entries[e].address;
     }
   }

Grid/allocator/MemoryManager.h

@@ -35,12 +35,6 @@ NAMESPACE_BEGIN(Grid);
 // Move control to configure.ac and Config.h?
 
 #define GRID_ALLOC_SMALL_LIMIT (4096)
-#define GRID_ALLOC_HUGE_LIMIT  (2147483648)
-
-#define STRINGIFY(x) #x
-#define TOSTRING(x) STRINGIFY(x)
-#define FILE_LINE __FILE__ ":" TOSTRING(__LINE__)
-#define AUDIT(a) MemoryManager::Audit(FILE_LINE)
 
 /*Pinning pages is costly*/
 ////////////////////////////////////////////////////////////////////////////
@@ -71,21 +65,6 @@ enum ViewMode {
   CpuWriteDiscard = 0x10 // same for now
 };
 
-struct MemoryStatus {
-  uint64_t     DeviceBytes;
-  uint64_t     DeviceLRUBytes;
-  uint64_t     DeviceMaxBytes;
-  uint64_t     HostToDeviceBytes;
-  uint64_t     DeviceToHostBytes;
-  uint64_t     HostToDeviceXfer;
-  uint64_t     DeviceToHostXfer;
-  uint64_t     DeviceEvictions;
-  uint64_t     DeviceDestroy;
-  uint64_t     DeviceAllocCacheBytes;
-  uint64_t     HostAllocCacheBytes;
-};
-
-
 class MemoryManager {
 private:
 
@@ -99,23 +78,21 @@ private:
   } AllocationCacheEntry;
 
   static const int NallocCacheMax=128; 
-  static const int NallocType=9;
+  static const int NallocType=6;
   static AllocationCacheEntry Entries[NallocType][NallocCacheMax];
   static int Victim[NallocType];
   static int Ncache[NallocType];
-  static uint64_t CacheBytes[NallocType];
 
   /////////////////////////////////////////////////
   // Free pool
   /////////////////////////////////////////////////
   static void *Insert(void *ptr,size_t bytes,int type) ;
   static void *Lookup(size_t bytes,int type) ;
-  static void *Insert(void *ptr,size_t bytes,AllocationCacheEntry *entries,int ncache,int &victim,uint64_t &cbytes) ;
+  static void *Insert(void *ptr,size_t bytes,AllocationCacheEntry *entries,int ncache,int &victim) ;
-  static void *Lookup(size_t bytes,AllocationCacheEntry *entries,int ncache,uint64_t &cbytes) ;
+  static void *Lookup(size_t bytes,AllocationCacheEntry *entries,int ncache) ;
 
- public:
   static void PrintBytes(void);
-  static void Audit(std::string s);
+ public:
   static void Init(void);
   static void InitMessage(void);
   static void *AcceleratorAllocate(size_t bytes);
@@ -135,27 +112,6 @@ private:
   static uint64_t     DeviceToHostBytes;
   static uint64_t     HostToDeviceXfer;
   static uint64_t     DeviceToHostXfer;
-  static uint64_t     DeviceEvictions;
-  static uint64_t     DeviceDestroy;
-  
-  static uint64_t     DeviceCacheBytes();
-  static uint64_t     HostCacheBytes();
-
-  static MemoryStatus GetFootprint(void) {
-    MemoryStatus stat;
-    stat.DeviceBytes       = DeviceBytes;
-    stat.DeviceLRUBytes    = DeviceLRUBytes;
-    stat.DeviceMaxBytes    = DeviceMaxBytes;
-    stat.HostToDeviceBytes = HostToDeviceBytes;
-    stat.DeviceToHostBytes = DeviceToHostBytes;
-    stat.HostToDeviceXfer  = HostToDeviceXfer;
-    stat.DeviceToHostXfer  = DeviceToHostXfer;
-    stat.DeviceEvictions   = DeviceEvictions;
-    stat.DeviceDestroy     = DeviceDestroy;
-    stat.DeviceAllocCacheBytes = DeviceCacheBytes();
-    stat.HostAllocCacheBytes   = HostCacheBytes();
-    return stat;
-  };
  
  private:
 #ifndef GRID_UVM
@@ -209,13 +165,10 @@ private:
   static void     CpuViewClose(uint64_t Ptr);
   static uint64_t CpuViewOpen(uint64_t  CpuPtr,size_t bytes,ViewMode mode,ViewAdvise hint);
 #endif
+  static void NotifyDeletion(void * CpuPtr);
 
  public:
-  static void DisplayMallinfo(void);
-  static void NotifyDeletion(void * CpuPtr);
   static void Print(void);
-  static void PrintAll(void);
-  static void PrintState( void* CpuPtr);
   static int   isOpen   (void* CpuPtr);
   static void  ViewClose(void* CpuPtr,ViewMode mode);
   static void *ViewOpen (void* CpuPtr,size_t bytes,ViewMode mode,ViewAdvise hint);

Grid/allocator/MemoryManagerCache.cc

@@ -1,15 +1,11 @@
 #include <Grid/GridCore.h>
 #ifndef GRID_UVM
 
+#warning "Using explicit device memory copies"
 NAMESPACE_BEGIN(Grid);
+//define dprintf(...) printf ( __VA_ARGS__ ); fflush(stdout);
+#define dprintf(...)
 
-#define MAXLINE 512
-static char print_buffer [ MAXLINE ];
-
-#define mprintf(...) snprintf (print_buffer,MAXLINE, __VA_ARGS__ ); std::cout << GridLogMemory << print_buffer << std::endl;
-#define dprintf(...) snprintf (print_buffer,MAXLINE, __VA_ARGS__ ); std::cout << GridLogDebug  << print_buffer << std::endl;
-//#define dprintf(...) 
-//#define mprintf(...) 
 
 ////////////////////////////////////////////////////////////
 // For caching copies of data on device
@@ -27,8 +23,6 @@ uint64_t  MemoryManager::HostToDeviceBytes;
 uint64_t  MemoryManager::DeviceToHostBytes;
 uint64_t  MemoryManager::HostToDeviceXfer;
 uint64_t  MemoryManager::DeviceToHostXfer;
-uint64_t  MemoryManager::DeviceEvictions;
-uint64_t  MemoryManager::DeviceDestroy;
 
 ////////////////////////////////////
 // Priority ordering for unlocked entries
@@ -50,12 +44,12 @@ int   MemoryManager::EntryPresent(uint64_t CpuPtr)
 {
   if(AccViewTable.empty()) return 0;
 
-  auto count = AccViewTable.count(CpuPtr);  GRID_ASSERT((count==0)||(count==1));
+  auto count = AccViewTable.count(CpuPtr);  assert((count==0)||(count==1));
   return count;
 }
 void  MemoryManager::EntryCreate(uint64_t CpuPtr,size_t bytes,ViewMode mode,ViewAdvise hint)
 {
-  GRID_ASSERT(!EntryPresent(CpuPtr));
+  assert(!EntryPresent(CpuPtr));
   AcceleratorViewEntry AccCache;
   AccCache.CpuPtr = CpuPtr;
   AccCache.AccPtr = (uint64_t)NULL;
@@ -69,9 +63,9 @@ void  MemoryManager::EntryCreate(uint64_t CpuPtr,size_t bytes,ViewMode mode,View
 }
 MemoryManager::AccViewTableIterator MemoryManager::EntryLookup(uint64_t CpuPtr)
 {
-  GRID_ASSERT(EntryPresent(CpuPtr));
+  assert(EntryPresent(CpuPtr));
   auto AccCacheIterator = AccViewTable.find(CpuPtr);
-  GRID_ASSERT(AccCacheIterator!=AccViewTable.end());
+  assert(AccCacheIterator!=AccViewTable.end());
   return AccCacheIterator;
 }
 void MemoryManager::EntryErase(uint64_t CpuPtr)
@@ -81,7 +75,7 @@ void MemoryManager::EntryErase(uint64_t CpuPtr)
 }
 void  MemoryManager::LRUinsert(AcceleratorViewEntry &AccCache)
 {
-  GRID_ASSERT(AccCache.LRU_valid==0);
+  assert(AccCache.LRU_valid==0);
   if (AccCache.transient) { 
     LRU.push_back(AccCache.CpuPtr);
     AccCache.LRU_entry = --LRU.end();
@@ -94,7 +88,7 @@ void  MemoryManager::LRUinsert(AcceleratorViewEntry &AccCache)
 }
 void  MemoryManager::LRUremove(AcceleratorViewEntry &AccCache)
 {
-  GRID_ASSERT(AccCache.LRU_valid==1);
+  assert(AccCache.LRU_valid==1);
   LRU.erase(AccCache.LRU_entry);
   AccCache.LRU_valid = 0;
   DeviceLRUBytes-=AccCache.bytes;
@@ -108,19 +102,17 @@ void MemoryManager::AccDiscard(AcceleratorViewEntry &AccCache)
   // Remove from Accelerator, remove entry, without flush
   // Cannot be locked. If allocated Must be in LRU pool.
   ///////////////////////////////////////////////////////////
-  GRID_ASSERT(AccCache.state!=Empty);
+  assert(AccCache.state!=Empty);
   
-  dprintf("MemoryManager: Discard(%lx) %lx",(uint64_t)AccCache.CpuPtr,(uint64_t)AccCache.AccPtr); 
+   dprintf("MemoryManager: Discard(%llx) %llx\n",(uint64_t)AccCache.CpuPtr,(uint64_t)AccCache.AccPtr); 
-  GRID_ASSERT(AccCache.accLock==0);
+  assert(AccCache.accLock==0);
-  GRID_ASSERT(AccCache.cpuLock==0);
+  assert(AccCache.cpuLock==0);
-  GRID_ASSERT(AccCache.CpuPtr!=(uint64_t)NULL);
+  assert(AccCache.CpuPtr!=(uint64_t)NULL);
   if(AccCache.AccPtr) {
     AcceleratorFree((void *)AccCache.AccPtr,AccCache.bytes);
-    DeviceDestroy++;
     DeviceBytes   -=AccCache.bytes;
     LRUremove(AccCache);
-    AccCache.AccPtr=(uint64_t) NULL;
+    dprintf("MemoryManager: Free(%llx) LRU %lld Total %lld\n",(uint64_t)AccCache.AccPtr,DeviceLRUBytes,DeviceBytes);  
-    dprintf("MemoryManager: Free(%lx) LRU %ld Total %ld",(uint64_t)AccCache.AccPtr,DeviceLRUBytes,DeviceBytes);  
   }
   uint64_t CpuPtr = AccCache.CpuPtr;
   EntryErase(CpuPtr);
@@ -129,63 +121,51 @@ void MemoryManager::AccDiscard(AcceleratorViewEntry &AccCache)
 void MemoryManager::Evict(AcceleratorViewEntry &AccCache)
 {
   ///////////////////////////////////////////////////////////////////////////
-  // Make CPU consistent, remove from Accelerator, remove from LRU, LEAVE CPU only entry
+  // Make CPU consistent, remove from Accelerator, remove entry
-  // Cannot be acclocked. If allocated must be in LRU pool.
+  // Cannot be locked. If allocated must be in LRU pool.
-  //
-  // Nov 2022... Felix issue: Allocating two CpuPtrs, can have an entry in LRU-q with CPUlock.
-  //                          and require to evict the AccPtr copy. Eviction was a mistake in CpuViewOpen
-  //                          but there is a weakness where CpuLock entries are attempted for erase
-  //                          Take these OUT LRU queue when CPU locked?
-  //                          Cannot take out the table as cpuLock data is important.
   ///////////////////////////////////////////////////////////////////////////
-  GRID_ASSERT(AccCache.state!=Empty);
+  assert(AccCache.state!=Empty);
   
-  mprintf("MemoryManager: Evict CpuPtr %lx AccPtr %lx cpuLock %ld accLock %ld",
+  dprintf("MemoryManager: Evict(%llx) %llx\n",(uint64_t)AccCache.CpuPtr,(uint64_t)AccCache.AccPtr); 
-	  (uint64_t)AccCache.CpuPtr,(uint64_t)AccCache.AccPtr,
+  assert(AccCache.accLock==0);
-	  (uint64_t)AccCache.cpuLock,(uint64_t)AccCache.accLock); 
+  assert(AccCache.cpuLock==0);
-  if (AccCache.accLock!=0) return;
-  if (AccCache.cpuLock!=0) return;
   if(AccCache.state==AccDirty) {
     Flush(AccCache);
   }
+  assert(AccCache.CpuPtr!=(uint64_t)NULL);
   if(AccCache.AccPtr) {
     AcceleratorFree((void *)AccCache.AccPtr,AccCache.bytes);
-    LRUremove(AccCache);
-    AccCache.AccPtr=(uint64_t)NULL;
-    AccCache.state=CpuDirty; // CPU primary now
     DeviceBytes   -=AccCache.bytes;
-    dprintf("MemoryManager: Free(AccPtr %lx) footprint now %ld ",(uint64_t)AccCache.AccPtr,DeviceBytes);  
+    LRUremove(AccCache);
+    dprintf("MemoryManager: Free(%llx) footprint now %lld \n",(uint64_t)AccCache.AccPtr,DeviceBytes);  
   }
-  //  uint64_t CpuPtr = AccCache.CpuPtr;
+  uint64_t CpuPtr = AccCache.CpuPtr;
-  DeviceEvictions++;
+  EntryErase(CpuPtr);
-  //  EntryErase(CpuPtr);
 }
 void MemoryManager::Flush(AcceleratorViewEntry &AccCache)
 {
-  GRID_ASSERT(AccCache.state==AccDirty);
+  assert(AccCache.state==AccDirty);
-  GRID_ASSERT(AccCache.cpuLock==0);
+  assert(AccCache.cpuLock==0);
-  GRID_ASSERT(AccCache.accLock==0);
+  assert(AccCache.accLock==0);
-  GRID_ASSERT(AccCache.AccPtr!=(uint64_t)NULL);
+  assert(AccCache.AccPtr!=(uint64_t)NULL);
-  GRID_ASSERT(AccCache.CpuPtr!=(uint64_t)NULL);
+  assert(AccCache.CpuPtr!=(uint64_t)NULL);
   acceleratorCopyFromDevice((void *)AccCache.AccPtr,(void *)AccCache.CpuPtr,AccCache.bytes);
-  mprintf("MemoryManager: acceleratorCopyFromDevice Flush size %ld AccPtr %lx -> CpuPtr %lx",(uint64_t)AccCache.bytes,(uint64_t)AccCache.AccPtr,(uint64_t)AccCache.CpuPtr); fflush(stdout);
+  dprintf("MemoryManager: Flush  %llx -> %llx\n",(uint64_t)AccCache.AccPtr,(uint64_t)AccCache.CpuPtr); fflush(stdout);
   DeviceToHostBytes+=AccCache.bytes;
   DeviceToHostXfer++;
   AccCache.state=Consistent;
 }
 void MemoryManager::Clone(AcceleratorViewEntry &AccCache)
 {
-  GRID_ASSERT(AccCache.state==CpuDirty);
+  assert(AccCache.state==CpuDirty);
-  GRID_ASSERT(AccCache.cpuLock==0);
+  assert(AccCache.cpuLock==0);
-  GRID_ASSERT(AccCache.accLock==0);
+  assert(AccCache.accLock==0);
-  GRID_ASSERT(AccCache.CpuPtr!=(uint64_t)NULL);
+  assert(AccCache.CpuPtr!=(uint64_t)NULL);
   if(AccCache.AccPtr==(uint64_t)NULL){
     AccCache.AccPtr=(uint64_t)AcceleratorAllocate(AccCache.bytes);
     DeviceBytes+=AccCache.bytes;
   }
-  mprintf("MemoryManager: acceleratorCopyToDevice   Clone size %ld AccPtr %lx <- CpuPtr %lx",
+  dprintf("MemoryManager: Clone %llx <- %llx\n",(uint64_t)AccCache.AccPtr,(uint64_t)AccCache.CpuPtr); fflush(stdout);
-	  (uint64_t)AccCache.bytes,
-	  (uint64_t)AccCache.AccPtr,(uint64_t)AccCache.CpuPtr); fflush(stdout);
   acceleratorCopyToDevice((void *)AccCache.CpuPtr,(void *)AccCache.AccPtr,AccCache.bytes);
   HostToDeviceBytes+=AccCache.bytes;
   HostToDeviceXfer++;
@@ -194,10 +174,10 @@ void MemoryManager::Clone(AcceleratorViewEntry &AccCache)
 
 void MemoryManager::CpuDiscard(AcceleratorViewEntry &AccCache)
 {
-  GRID_ASSERT(AccCache.state!=Empty);
+  assert(AccCache.state!=Empty);
-  GRID_ASSERT(AccCache.cpuLock==0);
+  assert(AccCache.cpuLock==0);
-  GRID_ASSERT(AccCache.accLock==0);
+  assert(AccCache.accLock==0);
-  GRID_ASSERT(AccCache.CpuPtr!=(uint64_t)NULL);
+  assert(AccCache.CpuPtr!=(uint64_t)NULL);
   if(AccCache.AccPtr==(uint64_t)NULL){
     AccCache.AccPtr=(uint64_t)AcceleratorAllocate(AccCache.bytes);
     DeviceBytes+=AccCache.bytes;
@@ -211,42 +191,34 @@ void MemoryManager::CpuDiscard(AcceleratorViewEntry &AccCache)
 void MemoryManager::ViewClose(void* Ptr,ViewMode mode)
 {
   if( (mode==AcceleratorRead)||(mode==AcceleratorWrite)||(mode==AcceleratorWriteDiscard) ){
-    dprintf("AcceleratorViewClose %lx",(uint64_t)Ptr);
     AcceleratorViewClose((uint64_t)Ptr);
   } else if( (mode==CpuRead)||(mode==CpuWrite)){
     CpuViewClose((uint64_t)Ptr);
   } else { 
-    GRID_ASSERT(0);
+    assert(0);
   }
 }
 void *MemoryManager::ViewOpen(void* _CpuPtr,size_t bytes,ViewMode mode,ViewAdvise hint)
 {
   uint64_t CpuPtr = (uint64_t)_CpuPtr;
   if( (mode==AcceleratorRead)||(mode==AcceleratorWrite)||(mode==AcceleratorWriteDiscard) ){
-    dprintf("AcceleratorViewOpen %lx",(uint64_t)CpuPtr);
     return (void *) AcceleratorViewOpen(CpuPtr,bytes,mode,hint);
   } else if( (mode==CpuRead)||(mode==CpuWrite)){
     return (void *)CpuViewOpen(CpuPtr,bytes,mode,hint);
   } else { 
-    GRID_ASSERT(0);
+    assert(0);
     return NULL;
   }
 }
 void  MemoryManager::EvictVictims(uint64_t bytes)
 {
-  if(bytes>=DeviceMaxBytes) {
-    printf("EvictVictims bytes %ld DeviceMaxBytes %ld\n",bytes,DeviceMaxBytes);
-  }
-  GRID_ASSERT(bytes<DeviceMaxBytes);
   while(bytes+DeviceLRUBytes > DeviceMaxBytes){
     if ( DeviceLRUBytes > 0){
-      GRID_ASSERT(LRU.size()>0);
+      assert(LRU.size()>0);
-      uint64_t victim = LRU.back(); // From the LRU
+      uint64_t victim = LRU.back();
       auto AccCacheIterator = EntryLookup(victim);
       auto & AccCache = AccCacheIterator->second;
       Evict(AccCache);
-    } else {
-      return;
     }
   }
 }
@@ -264,19 +236,18 @@ uint64_t MemoryManager::AcceleratorViewOpen(uint64_t CpuPtr,size_t bytes,ViewMod
   if (!AccCache.AccPtr) {
     EvictVictims(bytes); 
   } 
-  GRID_ASSERT((mode==AcceleratorRead)||(mode==AcceleratorWrite)||(mode==AcceleratorWriteDiscard));
+  assert((mode==AcceleratorRead)||(mode==AcceleratorWrite)||(mode==AcceleratorWriteDiscard));
 
-  GRID_ASSERT(AccCache.cpuLock==0);  // Programming error
+  assert(AccCache.cpuLock==0);  // Programming error
 
   if(AccCache.state!=Empty) {
-    dprintf("ViewOpen found entry %lx %lx : sizes %ld %ld accLock %ld",
+    dprintf("ViewOpen found entry %llx %llx : %lld %lld\n",
 		    (uint64_t)AccCache.CpuPtr,
 		    (uint64_t)CpuPtr,
 		    (uint64_t)AccCache.bytes,
-	            (uint64_t)bytes,
+		    (uint64_t)bytes);
-		    (uint64_t)AccCache.accLock);
+    assert(AccCache.CpuPtr == CpuPtr);
-    GRID_ASSERT(AccCache.CpuPtr == CpuPtr);
+    assert(AccCache.bytes  ==bytes);
-    GRID_ASSERT(AccCache.bytes  ==bytes);
   }
 /*
  *  State transitions and actions
@@ -293,7 +264,7 @@ uint64_t MemoryManager::AcceleratorViewOpen(uint64_t CpuPtr,size_t bytes,ViewMod
  *  AccWrite AccDirty   AccDirty       -        - 
  */
   if(AccCache.state==Empty) {
-    GRID_ASSERT(AccCache.LRU_valid==0);
+    assert(AccCache.LRU_valid==0);
     AccCache.CpuPtr = CpuPtr;
     AccCache.AccPtr = (uint64_t)NULL;
     AccCache.bytes  = bytes;
@@ -309,7 +280,6 @@ uint64_t MemoryManager::AcceleratorViewOpen(uint64_t CpuPtr,size_t bytes,ViewMod
       AccCache.state  = Consistent; // Empty + AccRead => Consistent
     }
     AccCache.accLock= 1;
-    dprintf("Copied Empty entry into device accLock= %d",AccCache.accLock);
   } else if(AccCache.state==CpuDirty ){
     if(mode==AcceleratorWriteDiscard) {
       CpuDiscard(AccCache);
@@ -322,30 +292,28 @@ uint64_t MemoryManager::AcceleratorViewOpen(uint64_t CpuPtr,size_t bytes,ViewMod
       AccCache.state  = Consistent; // CpuDirty + AccRead => Consistent
     }
     AccCache.accLock++;
-    dprintf("CpuDirty entry into device ++accLock= %d",AccCache.accLock);
+    dprintf("Copied CpuDirty entry into device accLock %d\n",AccCache.accLock);
   } else if(AccCache.state==Consistent) {
     if((mode==AcceleratorWrite)||(mode==AcceleratorWriteDiscard))
       AccCache.state  = AccDirty;   // Consistent + AcceleratorWrite=> AccDirty
     else
       AccCache.state  = Consistent; // Consistent + AccRead => Consistent
     AccCache.accLock++;
-    dprintf("Consistent entry into device ++accLock= %d",AccCache.accLock);
+    dprintf("Consistent entry into device accLock %d\n",AccCache.accLock);
   } else if(AccCache.state==AccDirty) {
     if((mode==AcceleratorWrite)||(mode==AcceleratorWriteDiscard))
       AccCache.state  = AccDirty; // AccDirty + AcceleratorWrite=> AccDirty
     else
       AccCache.state  = AccDirty; // AccDirty + AccRead => AccDirty
     AccCache.accLock++;
-    dprintf("AccDirty entry ++accLock= %d",AccCache.accLock);
+    dprintf("AccDirty entry into device accLock %d\n",AccCache.accLock);
   } else {
-    GRID_ASSERT(0);
+    assert(0);
   }
 
-  GRID_ASSERT(AccCache.accLock>0);
+  // If view is opened on device remove from LRU
-  // If view is opened on device must remove from LRU
   if(AccCache.LRU_valid==1){
     // must possibly remove from LRU as now locked on GPU
-    dprintf("AccCache entry removed from LRU ");
     LRUremove(AccCache);
   }
 
@@ -362,16 +330,14 @@ void MemoryManager::AcceleratorViewClose(uint64_t CpuPtr)
   auto AccCacheIterator = EntryLookup(CpuPtr);
   auto & AccCache = AccCacheIterator->second;
 
-  GRID_ASSERT(AccCache.cpuLock==0);
+  assert(AccCache.cpuLock==0);
-  GRID_ASSERT(AccCache.accLock>0);
+  assert(AccCache.accLock>0);
 
   AccCache.accLock--;
+
   // Move to LRU queue if not locked and close on device
   if(AccCache.accLock==0) {
-    dprintf("AccleratorViewClose %lx AccLock decremented to %ld move to LRU queue",(uint64_t)CpuPtr,(uint64_t)AccCache.accLock);
     LRUinsert(AccCache);
-  } else {
-    dprintf("AccleratorViewClose %lx AccLock decremented to %ld",(uint64_t)CpuPtr,(uint64_t)AccCache.accLock);
   }
 }
 void MemoryManager::CpuViewClose(uint64_t CpuPtr)
@@ -379,8 +345,8 @@ void MemoryManager::CpuViewClose(uint64_t CpuPtr)
   auto AccCacheIterator = EntryLookup(CpuPtr);
   auto & AccCache = AccCacheIterator->second;
 
-  GRID_ASSERT(AccCache.cpuLock>0);
+  assert(AccCache.cpuLock>0);
-  GRID_ASSERT(AccCache.accLock==0);
+  assert(AccCache.accLock==0);
 
   AccCache.cpuLock--;
 }
@@ -408,17 +374,16 @@ uint64_t MemoryManager::CpuViewOpen(uint64_t CpuPtr,size_t bytes,ViewMode mode,V
   auto AccCacheIterator = EntryLookup(CpuPtr);
   auto & AccCache = AccCacheIterator->second;
 
-  // CPU doesn't need to free space
+  if (!AccCache.AccPtr) {
-  //  if (!AccCache.AccPtr) {
+     EvictVictims(bytes);
-  //    EvictVictims(bytes);
+  }
-  //  }
 
-  GRID_ASSERT((mode==CpuRead)||(mode==CpuWrite));
+  assert((mode==CpuRead)||(mode==CpuWrite));
-  GRID_ASSERT(AccCache.accLock==0);  // Programming error
+  assert(AccCache.accLock==0);  // Programming error
 
   if(AccCache.state!=Empty) {
-    GRID_ASSERT(AccCache.CpuPtr == CpuPtr);
+    assert(AccCache.CpuPtr == CpuPtr);
-    GRID_ASSERT(AccCache.bytes==bytes);
+    assert(AccCache.bytes==bytes);
   }
 
   if(AccCache.state==Empty) {
@@ -433,20 +398,20 @@ uint64_t MemoryManager::CpuViewOpen(uint64_t CpuPtr,size_t bytes,ViewMode mode,V
     AccCache.state = CpuDirty; // CpuDirty +CpuRead/CpuWrite => CpuDirty
     AccCache.cpuLock++;
   } else if(AccCache.state==Consistent) {
-    GRID_ASSERT(AccCache.AccPtr != (uint64_t)NULL);
+    assert(AccCache.AccPtr != (uint64_t)NULL);
     if(mode==CpuWrite)
       AccCache.state = CpuDirty;   // Consistent +CpuWrite => CpuDirty
     else 
       AccCache.state = Consistent; // Consistent +CpuRead  => Consistent
     AccCache.cpuLock++;
   } else if(AccCache.state==AccDirty) {
-    GRID_ASSERT(AccCache.AccPtr != (uint64_t)NULL);
+    assert(AccCache.AccPtr != (uint64_t)NULL);
     Flush(AccCache);
     if(mode==CpuWrite) AccCache.state = CpuDirty;   // AccDirty +CpuWrite => CpuDirty, Flush
     else            AccCache.state = Consistent; // AccDirty +CpuRead  => Consistent, Flush
     AccCache.cpuLock++;
   } else {
-    GRID_ASSERT(0); // should be unreachable
+    assert(0); // should be unreachable
   }
 
   AccCache.transient= transient? EvictNext : 0;
@@ -464,30 +429,20 @@ void  MemoryManager::NotifyDeletion(void *_ptr)
 }
 void  MemoryManager::Print(void)
 {
-  PrintBytes();
+  std::cout << GridLogDebug << "--------------------------------------------" << std::endl;
-  std::cout << GridLogMessage << "--------------------------------------------" << std::endl;
+  std::cout << GridLogDebug << "Memory Manager                             " << std::endl;
-  std::cout << GridLogMessage << "Memory Manager                             " << std::endl;
+  std::cout << GridLogDebug << "--------------------------------------------" << std::endl;
-  std::cout << GridLogMessage << "--------------------------------------------" << std::endl;
+  std::cout << GridLogDebug << DeviceBytes   << " bytes allocated on device " << std::endl;
-  std::cout << GridLogMessage << DeviceBytes   << " bytes allocated on device " << std::endl;
+  std::cout << GridLogDebug << DeviceLRUBytes<< " bytes evictable on device " << std::endl;
-  std::cout << GridLogMessage << DeviceLRUBytes<< " bytes evictable on device " << std::endl;
+  std::cout << GridLogDebug << DeviceMaxBytes<< " bytes max on device       " << std::endl;
-  std::cout << GridLogMessage << DeviceMaxBytes<< " bytes max on device       " << std::endl;
+  std::cout << GridLogDebug << HostToDeviceXfer << " transfers        to   device " << std::endl;
-  std::cout << GridLogMessage << HostToDeviceXfer << " transfers        to   device " << std::endl;
+  std::cout << GridLogDebug << DeviceToHostXfer << " transfers        from device " << std::endl;
-  std::cout << GridLogMessage << DeviceToHostXfer << " transfers        from device " << std::endl;
+  std::cout << GridLogDebug << HostToDeviceBytes<< " bytes transfered to   device " << std::endl;
-  std::cout << GridLogMessage << HostToDeviceBytes<< " bytes transfered to   device " << std::endl;
+  std::cout << GridLogDebug << DeviceToHostBytes<< " bytes transfered from device " << std::endl;
-  std::cout << GridLogMessage << DeviceToHostBytes<< " bytes transfered from device " << std::endl;
+  std::cout << GridLogDebug << AccViewTable.size()<< " vectors " << LRU.size()<<" evictable"<< std::endl;
-  std::cout << GridLogMessage << DeviceEvictions  << " Evictions from device " << std::endl;
+  std::cout << GridLogDebug << "--------------------------------------------" << std::endl;
-  std::cout << GridLogMessage << DeviceDestroy    << " Destroyed vectors on device " << std::endl;
+  std::cout << GridLogDebug << "CpuAddr\t\tAccAddr\t\tState\t\tcpuLock\taccLock\tLRU_valid "<<std::endl;
-  std::cout << GridLogMessage << AccViewTable.size()<< " vectors " << LRU.size()<<" evictable"<< std::endl;
+  std::cout << GridLogDebug << "--------------------------------------------" << std::endl;
-  acceleratorMem();
-  std::cout << GridLogMessage << "--------------------------------------------" << std::endl;
-}
-void  MemoryManager::PrintAll(void)
-{
-  Print();
-  std::cout << GridLogMessage << std::endl;
-  std::cout << GridLogMessage << "--------------------------------------------" << std::endl;
-  std::cout << GridLogMessage << "CpuAddr\t\tAccAddr\t\tState\t\tcpuLock\taccLock\tLRU_valid "<<std::endl;
-  std::cout << GridLogMessage << "--------------------------------------------" << std::endl;
   for(auto it=AccViewTable.begin();it!=AccViewTable.end();it++){
     auto &AccCache = it->second;
     
@@ -497,13 +452,13 @@ void  MemoryManager::PrintAll(void)
     if ( AccCache.state==AccDirty ) str = std::string("AccDirty");
     if ( AccCache.state==Consistent)str = std::string("Consistent");
 
-    std::cout << GridLogMessage << "0x"<<std::hex<<AccCache.CpuPtr<<std::dec
+    std::cout << GridLogDebug << "0x"<<std::hex<<AccCache.CpuPtr<<std::dec
 	      << "\t0x"<<std::hex<<AccCache.AccPtr<<std::dec<<"\t" <<str
 	      << "\t" << AccCache.cpuLock
 	      << "\t" << AccCache.accLock
 	      << "\t" << AccCache.LRU_valid<<std::endl;
   }
-  std::cout << GridLogMessage << "--------------------------------------------" << std::endl;
+  std::cout << GridLogDebug << "--------------------------------------------" << std::endl;
 
 };
 int   MemoryManager::isOpen   (void* _CpuPtr) 
@@ -517,89 +472,6 @@ int   MemoryManager::isOpen   (void* _CpuPtr)
     return 0;
   }
 }
-void MemoryManager::Audit(std::string s)
-{
-  uint64_t CpuBytes=0;
-  uint64_t AccBytes=0;
-  uint64_t LruBytes1=0;
-  uint64_t LruBytes2=0;
-  uint64_t LruCnt=0;
-  
-  std::cout << " Memory Manager::Audit() from "<<s<<std::endl;
-  for(auto it=LRU.begin();it!=LRU.end();it++){
-    uint64_t cpuPtr = *it;
-    GRID_ASSERT(EntryPresent(cpuPtr));
-    auto AccCacheIterator = EntryLookup(cpuPtr);
-    auto & AccCache = AccCacheIterator->second;
-    LruBytes2+=AccCache.bytes;
-    GRID_ASSERT(AccCache.LRU_valid==1);
-    GRID_ASSERT(AccCache.LRU_entry==it);
-  }
-  std::cout << " Memory Manager::Audit() LRU queue matches table entries "<<std::endl;
-
-  for(auto it=AccViewTable.begin();it!=AccViewTable.end();it++){
-    auto &AccCache = it->second;
-    
-    std::string str;
-    if ( AccCache.state==Empty    ) str = std::string("Empty");
-    if ( AccCache.state==CpuDirty ) str = std::string("CpuDirty");
-    if ( AccCache.state==AccDirty ) str = std::string("AccDirty");
-    if ( AccCache.state==Consistent)str = std::string("Consistent");
-
-    CpuBytes+=AccCache.bytes;
-    if( AccCache.AccPtr )    AccBytes+=AccCache.bytes;
-    if( AccCache.LRU_valid ) LruBytes1+=AccCache.bytes;
-    if( AccCache.LRU_valid ) LruCnt++;
-    
-    if ( AccCache.cpuLock || AccCache.accLock ) {
-      GRID_ASSERT(AccCache.LRU_valid==0);
-
-      std::cout << GridLogError << s<< "\n\t 0x"<<std::hex<<AccCache.CpuPtr<<std::dec
-		<< "\t0x"<<std::hex<<AccCache.AccPtr<<std::dec<<"\t" <<str
-		<< "\t cpuLock  " << AccCache.cpuLock
-		<< "\t accLock  " << AccCache.accLock
-		<< "\t LRUvalid " << AccCache.LRU_valid<<std::endl;
-    }
-
-    GRID_ASSERT( AccCache.cpuLock== 0 ) ;
-    GRID_ASSERT( AccCache.accLock== 0 ) ;
-  }
-  std::cout << " Memory Manager::Audit() no locked table entries "<<std::endl;
-  GRID_ASSERT(LruBytes1==LruBytes2);
-  GRID_ASSERT(LruBytes1==DeviceLRUBytes);
-  std::cout << " Memory Manager::Audit() evictable bytes matches sum over table "<<std::endl;
-  GRID_ASSERT(AccBytes==DeviceBytes);
-  std::cout << " Memory Manager::Audit() device bytes matches sum over table "<<std::endl;
-  GRID_ASSERT(LruCnt == LRU.size());
-  std::cout << " Memory Manager::Audit() LRU entry count matches "<<std::endl;
-
-}
-
-void MemoryManager::PrintState(void* _CpuPtr)
-{
-  uint64_t CpuPtr = (uint64_t)_CpuPtr;
-
-  if ( EntryPresent(CpuPtr) ){
-    auto AccCacheIterator = EntryLookup(CpuPtr);
-    auto & AccCache = AccCacheIterator->second;
-    std::string str;
-    if ( AccCache.state==Empty    ) str = std::string("Empty");
-    if ( AccCache.state==CpuDirty ) str = std::string("CpuDirty");
-    if ( AccCache.state==AccDirty ) str = std::string("AccDirty");
-    if ( AccCache.state==Consistent)str = std::string("Consistent");
-    if ( AccCache.state==EvictNext) str = std::string("EvictNext");
-
-    std::cout << GridLogMessage << "CpuAddr\t\tAccAddr\t\tState\t\tcpuLock\taccLock\tLRU_valid "<<std::endl;
-    std::cout << GridLogMessage << "\tx"<<std::hex<<AccCache.CpuPtr<<std::dec
-    << "\tx"<<std::hex<<AccCache.AccPtr<<std::dec<<"\t" <<str
-    << "\t" << AccCache.cpuLock
-    << "\t" << AccCache.accLock
-    << "\t" << AccCache.LRU_valid<<std::endl;
-
-  } else {
-    std::cout << GridLogMessage << "No Entry in AccCache table." << std::endl; 
-  }
-}
 
 NAMESPACE_END(Grid);
 

Grid/allocator/MemoryManagerShared.cc

@@ -12,19 +12,11 @@ uint64_t  MemoryManager::HostToDeviceBytes;
 uint64_t  MemoryManager::DeviceToHostBytes;
 uint64_t  MemoryManager::HostToDeviceXfer;
 uint64_t  MemoryManager::DeviceToHostXfer;
-uint64_t  MemoryManager::DeviceEvictions;
-uint64_t  MemoryManager::DeviceDestroy;
 
-void  MemoryManager::Audit(std::string s){};
 void  MemoryManager::ViewClose(void* AccPtr,ViewMode mode){};
 void *MemoryManager::ViewOpen(void* CpuPtr,size_t bytes,ViewMode mode,ViewAdvise hint){ return CpuPtr; };
 int   MemoryManager::isOpen   (void* CpuPtr) { return 0;}
-void  MemoryManager::PrintState(void* CpuPtr)
-{
-std::cout << GridLogMessage << "Host<->Device memory movement not currently managed by Grid." << std::endl;
-};
 void  MemoryManager::Print(void){};
-void  MemoryManager::PrintAll(void){};
 void  MemoryManager::NotifyDeletion(void *ptr){};
 
 NAMESPACE_END(Grid);

Grid/allocator/MemoryStats.cc

@@ -10,16 +10,16 @@ void check_huge_pages(void *Buf,uint64_t BYTES)
 {
 #ifdef __linux__
   int fd = open("/proc/self/pagemap", O_RDONLY);
-  GRID_ASSERT(fd >= 0);
+  assert(fd >= 0);
   const int page_size = 4096;
   uint64_t virt_pfn = (uint64_t)Buf / page_size;
   off_t offset = sizeof(uint64_t) * virt_pfn;
   uint64_t npages = (BYTES + page_size-1) / page_size;
-  std::vector<uint64_t> pagedata(npages);
+  uint64_t pagedata[npages];
   uint64_t ret = lseek(fd, offset, SEEK_SET);
-  GRID_ASSERT(ret == offset);
+  assert(ret == offset);
-  ret = ::read(fd, &pagedata[0], sizeof(uint64_t)*npages);
+  ret = ::read(fd, pagedata, sizeof(uint64_t)*npages);
-  GRID_ASSERT(ret == sizeof(uint64_t) * npages);
+  assert(ret == sizeof(uint64_t) * npages);
   int nhugepages = npages / 512;
   int n4ktotal, nnothuge;
   n4ktotal = 0;

Grid/cartesian/Cartesian_base.h

@@ -70,8 +70,8 @@ public:
   Coordinate _istride;    // Inner stride i.e. within simd lane
   int _osites;                  // _isites*_osites = product(dimensions).
   int _isites;
-  int64_t _fsites;                  // _isites*_osites = product(dimensions).
+  int _fsites;                  // _isites*_osites = product(dimensions).
-  int64_t _gsites;
+  int _gsites;
   Coordinate _slice_block;// subslice information
   Coordinate _slice_stride;
   Coordinate _slice_nblock;
@@ -82,7 +82,6 @@ public:
   bool _isCheckerBoarded; 
   int        LocallyPeriodic;
   Coordinate _checker_dim_mask;
-  int              _checker_dim;
 
 public:
 
@@ -90,7 +89,7 @@ public:
   // Checkerboarding interface is virtual and overridden by 
   // GridCartesian / GridRedBlackCartesian
   ////////////////////////////////////////////////////////////////
-  virtual int CheckerBoarded(int dim) =0;
+  virtual int CheckerBoarded(int dim)=0;
   virtual int CheckerBoard(const Coordinate &site)=0;
   virtual int CheckerBoardDestination(int source_cb,int shift,int dim)=0;
   virtual int CheckerBoardShift(int source_cb,int dim,int shift,int osite)=0;
@@ -165,7 +164,7 @@ public:
     //
     if ( _simd_layout[dimension] > 2 ) { 
       for(int d=0;d<_ndimension;d++){
-	if ( d != dimension ) GRID_ASSERT ( (_simd_layout[d]==1)  );
+	if ( d != dimension ) assert ( (_simd_layout[d]==1)  );
       }
       permute_type = RotateBit; // How to specify distance; this is not just direction.
       return permute_type;
@@ -184,10 +183,10 @@ public:
   inline int Nsimd(void)  const { return _isites; };// Synonymous with iSites
   inline int oSites(void) const { return _osites; };
   inline int lSites(void) const { return _isites*_osites; }; 
-  inline int64_t gSites(void) const { return (int64_t)_isites*(int64_t)_osites*(int64_t)_Nprocessors; }; 
+  inline int gSites(void) const { return _isites*_osites*_Nprocessors; }; 
   inline int Nd    (void) const { return _ndimension;};
 
-  inline const Coordinate &LocalStarts(void)            { return _lstart;    };
+  inline const Coordinate LocalStarts(void)             { return _lstart;    };
   inline const Coordinate &FullDimensions(void)         { return _fdimensions;};
   inline const Coordinate &GlobalDimensions(void)       { return _gdimensions;};
   inline const Coordinate &LocalDimensions(void)        { return _ldimensions;};
@@ -215,15 +214,15 @@ public:
   ////////////////////////////////////////////////////////////////
   // Global addressing
   ////////////////////////////////////////////////////////////////
-  void GlobalIndexToGlobalCoor(int64_t gidx,Coordinate &gcoor){
+  void GlobalIndexToGlobalCoor(int gidx,Coordinate &gcoor){
-    GRID_ASSERT(gidx< gSites());
+    assert(gidx< gSites());
     Lexicographic::CoorFromIndex(gcoor,gidx,_gdimensions);
   }
   void LocalIndexToLocalCoor(int lidx,Coordinate &lcoor){
-    GRID_ASSERT(lidx<lSites());
+    assert(lidx<lSites());
     Lexicographic::CoorFromIndex(lcoor,lidx,_ldimensions);
   }
-  void GlobalCoorToGlobalIndex(const Coordinate & gcoor,int64_t & gidx){
+  void GlobalCoorToGlobalIndex(const Coordinate & gcoor,int & gidx){
     gidx=0;
     int mult=1;
     for(int mu=0;mu<_ndimension;mu++) {

Grid/cartesian/Cartesian_full.h

@@ -38,7 +38,7 @@ class GridCartesian: public GridBase {
 
 public:
   int dummy;
-  //  Coordinate _checker_dim_mask;
+  Coordinate _checker_dim_mask;
   virtual int  CheckerBoardFromOindexTable (int Oindex) {
     return 0;
   }
@@ -46,7 +46,7 @@ public:
   {
     return 0;
   }
-  virtual int CheckerBoarded(int dim) {
+  virtual int CheckerBoarded(int dim){
     return 0;
   }
   virtual int CheckerBoard(const Coordinate &site){
@@ -106,7 +106,6 @@ public:
     _rdimensions.resize(_ndimension);
     _simd_layout.resize(_ndimension);
     _checker_dim_mask.resize(_ndimension);;
-    _checker_dim = -1;
     _lstart.resize(_ndimension);
     _lend.resize(_ndimension);
 
@@ -128,10 +127,10 @@ public:
         // Use a reduced simd grid
         _ldimensions[d] = _gdimensions[d] / _processors[d]; //local dimensions
         //std::cout << _ldimensions[d] << "  " << _gdimensions[d] << "  " << _processors[d] << std::endl;
-        GRID_ASSERT(_ldimensions[d] * _processors[d] == _gdimensions[d]);
+        assert(_ldimensions[d] * _processors[d] == _gdimensions[d]);
 
         _rdimensions[d] = _ldimensions[d] / _simd_layout[d]; //overdecomposition
-        GRID_ASSERT(_rdimensions[d] * _simd_layout[d] == _ldimensions[d]);
+        assert(_rdimensions[d] * _simd_layout[d] == _ldimensions[d]);
 
         _lstart[d] = _processor_coor[d] * _ldimensions[d];
         _lend[d] = _processor_coor[d] * _ldimensions[d] + _ldimensions[d] - 1;

Grid/cartesian/Cartesian_red_black.h

@@ -57,17 +57,16 @@ class GridRedBlackCartesian : public GridBase
 {
 public:
   //  Coordinate _checker_dim_mask;
-  //  int              _checker_dim;
+  int              _checker_dim;
   std::vector<int> _checker_board;
 
-  virtual int isCheckerBoarded(void) const { return 1; };
   virtual int CheckerBoarded(int dim){
     if( dim==_checker_dim) return 1;
     else return 0;
   }
   virtual int CheckerBoard(const Coordinate &site){
     int linear=0;
-    GRID_ASSERT(site.size()==_ndimension);
+    assert(site.size()==_ndimension);
     for(int d=0;d<_ndimension;d++){ 
       if(_checker_dim_mask[d])
 	linear=linear+site[d];
@@ -160,11 +159,11 @@ public:
 
       _isCheckerBoarded = true;
     _checker_dim = checker_dim;
-    GRID_ASSERT(checker_dim_mask[checker_dim] == 1);
+    assert(checker_dim_mask[checker_dim] == 1);
     _ndimension = dimensions.size();
-    GRID_ASSERT(checker_dim_mask.size() == _ndimension);
+    assert(checker_dim_mask.size() == _ndimension);
-    GRID_ASSERT(processor_grid.size() == _ndimension);
+    assert(processor_grid.size() == _ndimension);
-    GRID_ASSERT(simd_layout.size() == _ndimension);
+    assert(simd_layout.size() == _ndimension);
 
     _fdimensions.resize(_ndimension);
     _gdimensions.resize(_ndimension);
@@ -190,20 +189,20 @@ public:
 
         if (d == _checker_dim)
 	  {
-	    GRID_ASSERT((_gdimensions[d] & 0x1) == 0);
+	    assert((_gdimensions[d] & 0x1) == 0);
 	    _gdimensions[d] = _gdimensions[d] / 2; // Remove a checkerboard
 	    _gsites /= 2;
 	  }
         _ldimensions[d] = _gdimensions[d] / _processors[d];
-        GRID_ASSERT(_ldimensions[d] * _processors[d] == _gdimensions[d]);
+        assert(_ldimensions[d] * _processors[d] == _gdimensions[d]);
         _lstart[d] = _processor_coor[d] * _ldimensions[d];
         _lend[d] = _processor_coor[d] * _ldimensions[d] + _ldimensions[d] - 1;
 
         // Use a reduced simd grid
         _simd_layout[d] = simd_layout[d];
         _rdimensions[d] = _ldimensions[d] / _simd_layout[d]; // this is not checking if this is integer
-        GRID_ASSERT(_rdimensions[d] * _simd_layout[d] == _ldimensions[d]);
+        assert(_rdimensions[d] * _simd_layout[d] == _ldimensions[d]);
-        GRID_ASSERT(_rdimensions[d] > 0);
+        assert(_rdimensions[d] > 0);
 
         // all elements of a simd vector must have same checkerboard.
         // If Ls vectorised, this must still be the case; e.g. dwf rb5d

Grid/communicator/Communicator_base.cc

@@ -33,8 +33,6 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 
 NAMESPACE_BEGIN(Grid);
 
-bool Stencil_force_mpi = true;
-
 ///////////////////////////////////////////////////////////////
 // Info that is setup once and indept of cartesian layout
 ///////////////////////////////////////////////////////////////
@@ -57,29 +55,18 @@ int                      CartesianCommunicator::ProcessorCount(void)    { return
 // very VERY rarely (Log, serial RNG) we need world without a grid
 ////////////////////////////////////////////////////////////////////////////////
 
-#ifdef USE_GRID_REDUCTION
-void CartesianCommunicator::GlobalSum(ComplexF &c)
-{
-  GlobalSumP2P(c);
-}
-void CartesianCommunicator::GlobalSum(ComplexD &c)
-{
-  GlobalSumP2P(c);
-}
-#else
 void CartesianCommunicator::GlobalSum(ComplexF &c)
 {
   GlobalSumVector((float *)&c,2);
 }
-void CartesianCommunicator::GlobalSum(ComplexD &c)
-{
-  GlobalSumVector((double *)&c,2);
-}
-#endif
 void CartesianCommunicator::GlobalSumVector(ComplexF *c,int N)
 {
   GlobalSumVector((float *)c,2*N);
 }
+void CartesianCommunicator::GlobalSum(ComplexD &c)
+{
+  GlobalSumVector((double *)&c,2);
+}
 void CartesianCommunicator::GlobalSumVector(ComplexD *c,int N)
 {
   GlobalSumVector((double *)c,2*N);

Grid/communicator/Communicator_base.h

@@ -33,12 +33,8 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 ///////////////////////////////////
 #include <Grid/communicator/SharedMemory.h>
 
-#define NVLINK_GET
-
 NAMESPACE_BEGIN(Grid);
 
-extern bool Stencil_force_mpi ;
-
 class CartesianCommunicator : public SharedMemory {
 
 public:    
@@ -55,11 +51,10 @@ public:
   // Communicator should know nothing of the physics grid, only processor grid.
   ////////////////////////////////////////////
   int              _Nprocessors;     // How many in all
-  int              _processor;       // linear processor rank
-  unsigned long    _ndimension;
-  Coordinate _shm_processors;  // Which dimensions get relayed out over processors lanes.
   Coordinate _processors;      // Which dimensions get relayed out over processors lanes.
+  int              _processor;       // linear processor rank
   Coordinate _processor_coor;  // linear processor coordinate
+  unsigned long    _ndimension;
   static Grid_MPI_Comm      communicator_world;
   Grid_MPI_Comm             communicator;
   std::vector<Grid_MPI_Comm> communicator_halo;
@@ -100,16 +95,14 @@ public:
   int                      BossRank(void)          ;
   int                      ThisRank(void)          ;
   const Coordinate & ThisProcessorCoor(void) ;
-  const Coordinate & ShmGrid(void)  { return _shm_processors; }  ;
   const Coordinate & ProcessorGrid(void)     ;
-  int                ProcessorCount(void)    ;
+  int                      ProcessorCount(void)    ;
 
   ////////////////////////////////////////////////////////////////////////////////
   // very VERY rarely (Log, serial RNG) we need world without a grid
   ////////////////////////////////////////////////////////////////////////////////
   static int  RankWorld(void) ;
-  static void BroadcastWorld(int root,void* data, uint64_t bytes);
+  static void BroadcastWorld(int root,void* data, int bytes);
-  static void BarrierWorld(void);
   
   ////////////////////////////////////////////////////////////
   // Reduction
@@ -130,83 +123,34 @@ public:
   void GlobalXOR(uint32_t &);
   void GlobalXOR(uint64_t &);
   
-  template<class obj> void GlobalSumP2P(obj &o)
-  {
-    std::vector<obj> column;
-    obj accum = o;
-    int source,dest;
-    for(int d=0;d<_ndimension;d++){
-      column.resize(_processors[d]);
-      column[0] = accum;
-      std::vector<MpiCommsRequest_t> list;
-      for(int p=1;p<_processors[d];p++){
-	ShiftedRanks(d,p,source,dest);
-	SendToRecvFromBegin(list,
-			    &column[0],
-			    dest,
-			    &column[p],
-			    source,
-			    sizeof(obj),d*100+p);
-
-      }
-      if (!list.empty()) // avoid triggering GRID_ASSERT in comms == none
-	CommsComplete(list);
-      for(int p=1;p<_processors[d];p++){
-	accum = accum + column[p];
-      }
-    }
-    Broadcast(0,accum);
-    o=accum;
-  }
-
   template<class obj> void GlobalSum(obj &o){
     typedef typename obj::scalar_type scalar_type;
     int words = sizeof(obj)/sizeof(scalar_type);
-    scalar_type * ptr = (scalar_type *)& o; // Safe alias 
+    scalar_type * ptr = (scalar_type *)& o;
     GlobalSumVector(ptr,words);
   }
   
   ////////////////////////////////////////////////////////////
   // Face exchange, buffer swap in translational invariant way
   ////////////////////////////////////////////////////////////
-  void CommsComplete(std::vector<MpiCommsRequest_t> &list);
-  void SendToRecvFromBegin(std::vector<MpiCommsRequest_t> &list,
-			   void *xmit,
-			   int dest,
-			   void *recv,
-			   int from,
-			   uint64_t bytes,int dir);
-  
   void SendToRecvFrom(void *xmit,
 		      int xmit_to_rank,
 		      void *recv,
 		      int recv_from_rank,
-		      uint64_t bytes);
+		      int bytes);
   
-  int IsOffNode(int rank);
   double StencilSendToRecvFrom(void *xmit,
-			       int xmit_to_rank,int do_xmit,
+			       int xmit_to_rank,
 			       void *recv,
-			       int recv_from_rank,int do_recv,
+			       int recv_from_rank,
-			       uint64_t bytes,int dir);
+			       int bytes,int dir);
-
-  double StencilSendToRecvFromPrepare(std::vector<CommsRequest_t> &list,
-				      void *xmit,
-				      int xmit_to_rank,int do_xmit,
-				      void *recv,
-				      int recv_from_rank,int do_recv,
-				      uint64_t xbytes,uint64_t rbytes,int dir);
-
-  // Could do a PollHtoD and have a CommsMerge dependence
-  void StencilSendToRecvFromPollDtoH (std::vector<CommsRequest_t> &list);
-  void StencilSendToRecvFromPollIRecv(std::vector<CommsRequest_t> &list);
 
   double StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
-				    void *xmit,void *xmit_comp,
+				    void *xmit,
-				    int xmit_to_rank,int do_xmit,
+				    int xmit_to_rank,
-				    void *recv,void *recv_comp,
+				    void *recv,
-				    int recv_from_rank,int do_recv,
+				    int recv_from_rank,
-				    uint64_t xbytes,uint64_t rbytes,int dir);
+				    int bytes,int dir);
   
   
   void StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall,int i);
@@ -220,20 +164,20 @@ public:
   ////////////////////////////////////////////////////////////
   // Broadcast a buffer and composite larger
   ////////////////////////////////////////////////////////////
-  void Broadcast(int root,void* data, uint64_t bytes);
+  void Broadcast(int root,void* data, int bytes);
 
   ////////////////////////////////////////////////////////////
   // All2All down one dimension
   ////////////////////////////////////////////////////////////
   template<class T> void AllToAll(int dim,std::vector<T> &in, std::vector<T> &out){
-    GRID_ASSERT(dim>=0);
+    assert(dim>=0);
-    GRID_ASSERT(dim<_ndimension);
+    assert(dim<_ndimension);
-    GRID_ASSERT(in.size()==out.size());
+    assert(in.size()==out.size());
     int numnode = _processors[dim];
     uint64_t bytes=sizeof(T);
     uint64_t words=in.size()/numnode;
-    GRID_ASSERT(numnode * words == in.size());
+    assert(numnode * words == in.size());
-    GRID_ASSERT(words < (1ULL<<31));
+    assert(words < (1ULL<<31));
     AllToAll(dim,(void *)&in[0],(void *)&out[0],words,bytes);
   }
   void AllToAll(int dim  ,void *in,void *out,uint64_t words,uint64_t bytes);

Grid/communicator/Communicator_mpi3.cc

@@ -28,17 +28,9 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #include <Grid/GridCore.h>
 #include <Grid/communicator/SharedMemory.h>
 
-void GridAbort(void) { MPI_Abort(MPI_COMM_WORLD,SIGABRT); }
-extern void * Grid_backtrace_buffer[_NBACKTRACE];
-
 NAMESPACE_BEGIN(Grid);
 
-
 Grid_MPI_Comm       CartesianCommunicator::communicator_world;
-#ifdef GRID_CHECKSUM_COMMS
-uint64_t checksum_index = 1;
-#endif
-
 
 ////////////////////////////////////////////
 // First initialise of comms system
@@ -63,11 +55,11 @@ void CartesianCommunicator::Init(int *argc, char ***argv)
 #endif
     //If only 1 comms thread we require any threading mode other than SINGLE, but for multiple comms threads we need MULTIPLE
     if( (nCommThreads == 1) && (provided == MPI_THREAD_SINGLE) ) {
-      GRID_ASSERT(0);
+      assert(0);
     }
 
     if( (nCommThreads > 1) && (provided != MPI_THREAD_MULTIPLE) ) {
-      GRID_ASSERT(0);
+      assert(0);
     }
   }
 
@@ -88,20 +80,20 @@ void CartesianCommunicator::Init(int *argc, char ***argv)
 void CartesianCommunicator::ShiftedRanks(int dim,int shift,int &source,int &dest)
 {
   int ierr=MPI_Cart_shift(communicator,dim,shift,&source,&dest);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 int CartesianCommunicator::RankFromProcessorCoor(Coordinate &coor)
 {
   int rank;
   int ierr=MPI_Cart_rank  (communicator, &coor[0], &rank);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
   return rank;
 }
 void  CartesianCommunicator::ProcessorCoorFromRank(int rank, Coordinate &coor)
 {
   coor.resize(_ndimension);
   int ierr=MPI_Cart_coords  (communicator, rank, _ndimension,&coor[0]);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -114,7 +106,7 @@ CartesianCommunicator::CartesianCommunicator(const Coordinate &processors)
   // Remap using the shared memory optimising routine
   // The remap creates a comm which must be freed
   ////////////////////////////////////////////////////
-  GlobalSharedMemory::OptimalCommunicator    (processors,optimal_comm,_shm_processors);
+  GlobalSharedMemory::OptimalCommunicator    (processors,optimal_comm);
   InitFromMPICommunicator(processors,optimal_comm);
   SetCommunicator(optimal_comm);
   ///////////////////////////////////////////////////
@@ -128,17 +120,16 @@ CartesianCommunicator::CartesianCommunicator(const Coordinate &processors)
 //////////////////////////////////
 CartesianCommunicator::CartesianCommunicator(const Coordinate &processors,const CartesianCommunicator &parent,int &srank)
 {
-  _ndimension = processors.size();  GRID_ASSERT(_ndimension>=1);
+  _ndimension = processors.size();  assert(_ndimension>=1);
-  int parent_ndimension = parent._ndimension; GRID_ASSERT(_ndimension >= parent._ndimension);
+  int parent_ndimension = parent._ndimension; assert(_ndimension >= parent._ndimension);
   Coordinate parent_processor_coor(_ndimension,0);
   Coordinate parent_processors    (_ndimension,1);
-  Coordinate shm_processors       (_ndimension,1);
+
   // Can make 5d grid from 4d etc...
   int pad = _ndimension-parent_ndimension;
   for(int d=0;d<parent_ndimension;d++){
     parent_processor_coor[pad+d]=parent._processor_coor[d];
     parent_processors    [pad+d]=parent._processors[d];
-    shm_processors       [pad+d]=parent._shm_processors[d];
   }
 
   //////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -153,7 +144,7 @@ CartesianCommunicator::CartesianCommunicator(const Coordinate &processors,const
     childsize *= processors[d];
   }
   int Nchild = Nparent/childsize;
-  GRID_ASSERT (childsize * Nchild == Nparent);
+  assert (childsize * Nchild == Nparent);
 
   Coordinate ccoor(_ndimension); // coor within subcommunicator
   Coordinate scoor(_ndimension); // coor of split within parent
@@ -163,7 +154,6 @@ CartesianCommunicator::CartesianCommunicator(const Coordinate &processors,const
     ccoor[d] = parent_processor_coor[d] % processors[d];
     scoor[d] = parent_processor_coor[d] / processors[d];
     ssize[d] = parent_processors[d]     / processors[d];
-    if ( processors[d] < shm_processors[d] ) shm_processors[d] = processors[d]; // subnode splitting.
   }
 
   // rank within subcomm ; srank is rank of subcomm within blocks of subcomms
@@ -179,12 +169,12 @@ CartesianCommunicator::CartesianCommunicator(const Coordinate &processors,const
     // Split the communicator
     ////////////////////////////////////////////////////////////////
     int ierr= MPI_Comm_split(parent.communicator,srank,crank,&comm_split);
-    GRID_ASSERT(ierr==0);
+    assert(ierr==0);
 
   } else {
     srank = 0;
     int ierr = MPI_Comm_dup (parent.communicator,&comm_split);
-    GRID_ASSERT(ierr==0);
+    assert(ierr==0);
   }
 
   //////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -209,7 +199,7 @@ CartesianCommunicator::CartesianCommunicator(const Coordinate &processors,const
     }
   }
   for(int d=0;d<processors.size();d++){
-    GRID_ASSERT(_processor_coor[d] == ccoor[d] );
+    assert(_processor_coor[d] == ccoor[d] );
   }
 }
 
@@ -251,7 +241,7 @@ void CartesianCommunicator::InitFromMPICommunicator(const Coordinate &processors
   for(int i=0;i<_ndimension*2;i++){
     MPI_Comm_dup(communicator,&communicator_halo[i]);
   }
-  GRID_ASSERT(Size==_Nprocessors);
+  assert(Size==_Nprocessors);
 }
 
 CartesianCommunicator::~CartesianCommunicator()
@@ -265,176 +255,103 @@ CartesianCommunicator::~CartesianCommunicator()
     }
   }
 }
-#ifdef USE_GRID_REDUCTION
-void CartesianCommunicator::GlobalSum(float &f){
-  FlightRecorder::StepLog("GlobalSumP2P");
-  CartesianCommunicator::GlobalSumP2P(f);
-}
-void CartesianCommunicator::GlobalSum(double &d)
-{
-  FlightRecorder::StepLog("GlobalSumP2P");
-  CartesianCommunicator::GlobalSumP2P(d);
-}
-#else
-void CartesianCommunicator::GlobalSum(float &f){
-  FlightRecorder::StepLog("AllReduce float");
-  int ierr=MPI_Allreduce(MPI_IN_PLACE,&f,1,MPI_FLOAT,MPI_SUM,communicator);
-  GRID_ASSERT(ierr==0);
-}
-void CartesianCommunicator::GlobalSum(double &d)
-{
-  FlightRecorder::StepLog("AllReduce double");
-  int ierr = MPI_Allreduce(MPI_IN_PLACE,&d,1,MPI_DOUBLE,MPI_SUM,communicator);
-  GRID_ASSERT(ierr==0);
-}
-#endif
 void CartesianCommunicator::GlobalSum(uint32_t &u){
-  FlightRecorder::StepLog("AllReduce uint32_t");
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT32_T,MPI_SUM,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 void CartesianCommunicator::GlobalSum(uint64_t &u){
-  FlightRecorder::StepLog("AllReduce uint64_t");
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT64_T,MPI_SUM,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 void CartesianCommunicator::GlobalSumVector(uint64_t* u,int N){
-  FlightRecorder::StepLog("AllReduceVector");
   int ierr=MPI_Allreduce(MPI_IN_PLACE,u,N,MPI_UINT64_T,MPI_SUM,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 void CartesianCommunicator::GlobalXOR(uint32_t &u){
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT32_T,MPI_BXOR,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 void CartesianCommunicator::GlobalXOR(uint64_t &u){
-  FlightRecorder::StepLog("GlobalXOR");
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT64_T,MPI_BXOR,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 void CartesianCommunicator::GlobalMax(float &f)
 {
-  FlightRecorder::StepLog("GlobalMax");
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&f,1,MPI_FLOAT,MPI_MAX,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 void CartesianCommunicator::GlobalMax(double &d)
 {
-  FlightRecorder::StepLog("GlobalMax");
   int ierr = MPI_Allreduce(MPI_IN_PLACE,&d,1,MPI_DOUBLE,MPI_MAX,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
+}
+void CartesianCommunicator::GlobalSum(float &f){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&f,1,MPI_FLOAT,MPI_SUM,communicator);
+  assert(ierr==0);
 }
 void CartesianCommunicator::GlobalSumVector(float *f,int N)
 {
-  FlightRecorder::StepLog("GlobalSumVector(float *)");
   int ierr=MPI_Allreduce(MPI_IN_PLACE,f,N,MPI_FLOAT,MPI_SUM,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
+}
+void CartesianCommunicator::GlobalSum(double &d)
+{
+  int ierr = MPI_Allreduce(MPI_IN_PLACE,&d,1,MPI_DOUBLE,MPI_SUM,communicator);
+  assert(ierr==0);
 }
 void CartesianCommunicator::GlobalSumVector(double *d,int N)
 {
-  FlightRecorder::StepLog("GlobalSumVector(double *)");
   int ierr = MPI_Allreduce(MPI_IN_PLACE,d,N,MPI_DOUBLE,MPI_SUM,communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
-
-void CartesianCommunicator::SendToRecvFromBegin(std::vector<MpiCommsRequest_t> &list,
-						void *xmit,
-						int dest,
-						void *recv,
-						int from,
-						uint64_t bytes,int dir)
-{
-  MPI_Request xrq;
-  MPI_Request rrq;
-
-  GRID_ASSERT(dest != _processor);
-  GRID_ASSERT(from != _processor);
-  int tag;
-
-  tag= dir+from*32;
-  int ierr=MPI_Irecv(recv,(int)( bytes/sizeof(int32_t)), MPI_INT32_T,from,tag,communicator,&rrq);
-  GRID_ASSERT(ierr==0);
-  list.push_back(rrq);
-  
-  tag= dir+_processor*32;
-  ierr =MPI_Isend(xmit,(int)(bytes/sizeof(int32_t)), MPI_INT32_T,dest,tag,communicator,&xrq);
-  GRID_ASSERT(ierr==0);
-  list.push_back(xrq);
-}
-void CartesianCommunicator::CommsComplete(std::vector<MpiCommsRequest_t> &list)
-{
-  int nreq=list.size();
-
-  if (nreq==0) return;
-
-  std::vector<MPI_Status> status(nreq);
-  int ierr = MPI_Waitall(nreq,&list[0],&status[0]);
-  GRID_ASSERT(ierr==0);
-  list.resize(0);
-}
-
 // Basic Halo comms primitive
 void CartesianCommunicator::SendToRecvFrom(void *xmit,
 					   int dest,
 					   void *recv,
 					   int from,
-					   uint64_t bytes)
+					   int bytes)
 {
-  std::vector<MpiCommsRequest_t> reqs(0);
+  std::vector<CommsRequest_t> reqs(0);
+  unsigned long  xcrc = crc32(0L, Z_NULL, 0);
+  unsigned long  rcrc = crc32(0L, Z_NULL, 0);
 
   int myrank = _processor;
   int ierr;
 
   // Enforce no UVM in comms, device or host OK
-  GRID_ASSERT(acceleratorIsCommunicable(xmit));
+  assert(acceleratorIsCommunicable(xmit));
-  GRID_ASSERT(acceleratorIsCommunicable(recv));
+  assert(acceleratorIsCommunicable(recv));
 
   // Give the CPU to MPI immediately; can use threads to overlap optionally
   //  printf("proc %d SendToRecvFrom %d bytes Sendrecv \n",_processor,bytes);
-  ierr=MPI_Sendrecv(xmit,(int)(bytes/sizeof(int32_t)),MPI_INT32_T,dest,myrank,
+  ierr=MPI_Sendrecv(xmit,bytes,MPI_CHAR,dest,myrank,
-		    recv,(int)(bytes/sizeof(int32_t)),MPI_INT32_T,from, from,
+		    recv,bytes,MPI_CHAR,from, from,
 		    communicator,MPI_STATUS_IGNORE);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 
+  //  xcrc = crc32(xcrc,(unsigned char *)xmit,bytes);
+  //  rcrc = crc32(rcrc,(unsigned char *)recv,bytes);
+  //  printf("proc %d SendToRecvFrom %d bytes xcrc %lx rcrc %lx\n",_processor,bytes,xcrc,rcrc); fflush
 }
 // Basic Halo comms primitive
 double CartesianCommunicator::StencilSendToRecvFrom( void *xmit,
-						     int dest, int dox,
+						     int dest,
 						     void *recv,
-						     int from, int dor,
+						     int from,
-						     uint64_t bytes,int dir)
+						     int bytes,int dir)
 {
   std::vector<CommsRequest_t> list;
-  double offbytes = StencilSendToRecvFromPrepare(list,xmit,dest,dox,recv,from,dor,bytes,bytes,dir);
+  double offbytes = StencilSendToRecvFromBegin(list,xmit,dest,recv,from,bytes,dir);
-  offbytes       += StencilSendToRecvFromBegin(list,xmit,xmit,dest,dox,recv,recv,from,dor,bytes,bytes,dir);
   StencilSendToRecvFromComplete(list,dir);
   return offbytes;
 }
-int CartesianCommunicator::IsOffNode(int rank)
-{
-  int grank = ShmRanks[rank];
-  if ( grank == MPI_UNDEFINED ) return true;
-  else return false;
-}
 
-#ifdef ACCELERATOR_AWARE_MPI
-void CartesianCommunicator::StencilSendToRecvFromPollIRecv(std::vector<CommsRequest_t> &list) {};
-void CartesianCommunicator::StencilSendToRecvFromPollDtoH(std::vector<CommsRequest_t> &list) {};
-double CartesianCommunicator::StencilSendToRecvFromPrepare(std::vector<CommsRequest_t> &list,
-							   void *xmit,
-							   int dest,int dox,
-							   void *recv,
-							   int from,int dor,
-							   uint64_t xbytes,uint64_t rbytes,int dir)
-{
-  return 0.0; // Do nothing -- no preparation required
-}
 double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
-							 void *xmit,void *xmit_comp,
+							 void *xmit,
-							 int dest,int dox,
+							 int dest,
-							 void *recv,void *recv_comp,
+							 void *recv,
-							 int from,int dor,
+							 int from,
-							 uint64_t xbytes,uint64_t rbytes,int dir)
+							 int bytes,int dir)
 {
   int ncomm  =communicator_halo.size();
   int commdir=dir%ncomm;
@@ -447,431 +364,47 @@ double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsReques
   int gfrom = ShmRanks[from];
   int gme   = ShmRanks[_processor];
 
-  GRID_ASSERT(dest != _processor);
+  assert(dest != _processor);
-  GRID_ASSERT(from != _processor);
+  assert(from != _processor);
-  GRID_ASSERT(gme  == ShmRank);
+  assert(gme  == ShmRank);
   double off_node_bytes=0.0;
   int tag;
 
-  if ( dor ) {
+  if ( gfrom ==MPI_UNDEFINED) {
-    if ( (gfrom ==MPI_UNDEFINED) || Stencil_force_mpi ) {
+    tag= dir+from*32;
-      tag= dir+from*32;
+    ierr=MPI_Irecv(recv, bytes, MPI_CHAR,from,tag,communicator_halo[commdir],&rrq);
-      //      std::cout << " StencilSendToRecvFrom "<<dir<<" MPI_Irecv "<<std::hex<<recv<<std::dec<<std::endl;
+    assert(ierr==0);
-      ierr=MPI_Irecv(recv_comp,(int)(rbytes/sizeof(int32_t)), MPI_INT32_T,from,tag,communicator_halo[commdir],&rrq);
+    list.push_back(rrq);
-      GRID_ASSERT(ierr==0);
+    off_node_bytes+=bytes;
-      list.push_back(rrq);
-      off_node_bytes+=rbytes;
-    }
-#ifdef NVLINK_GET
-    else { 
-      void *shm = (void *) this->ShmBufferTranslate(from,xmit);
-      GRID_ASSERT(shm!=NULL);
-      //      std::cout << " StencilSendToRecvFrom "<<dir<<" CopyDeviceToDevice recv "<<std::hex<<recv<<" remote "<<shm <<std::dec<<std::endl;
-      acceleratorCopyDeviceToDeviceAsynch(shm,recv,rbytes);
-    }
-#endif
   }
-  // This is a NVLINK PUT  
+
-  if (dox) {
+  if ( gdest == MPI_UNDEFINED ) {
-    if ( (gdest == MPI_UNDEFINED) || Stencil_force_mpi ) {
+    tag= dir+_processor*32;
-      tag= dir+_processor*32;
+    ierr =MPI_Isend(xmit, bytes, MPI_CHAR,dest,tag,communicator_halo[commdir],&xrq);
-      ierr =MPI_Isend(xmit_comp,(int)(xbytes/sizeof(int32_t)), MPI_INT32_T,dest,tag,communicator_halo[commdir],&xrq);
+    assert(ierr==0);
-      GRID_ASSERT(ierr==0);
+    list.push_back(xrq);
-      list.push_back(xrq);
+    off_node_bytes+=bytes;
-      off_node_bytes+=xbytes;
-    } else {
-#ifndef NVLINK_GET
-      void *shm = (void *) this->ShmBufferTranslate(dest,recv);
-      GRID_ASSERT(shm!=NULL);
-      acceleratorCopyDeviceToDeviceAsynch(xmit,shm,xbytes);
-#endif
-    }
   }
+
+  if ( CommunicatorPolicy == CommunicatorPolicySequential ) {
+    this->StencilSendToRecvFromComplete(list,dir);
+  }
+
   return off_node_bytes;
 }
-
 void CartesianCommunicator::StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &list,int dir)
 {
   int nreq=list.size();
-  /*finishes Get/Put*/
-  acceleratorCopySynchronise();
 
   if (nreq==0) return;
+
   std::vector<MPI_Status> status(nreq);
   int ierr = MPI_Waitall(nreq,&list[0],&status[0]);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
   list.resize(0);
-  this->StencilBarrier(); 
 }
-
-#else /* NOT     ... ACCELERATOR_AWARE_MPI */
-///////////////////////////////////////////
-// Pipeline mode through host memory
-///////////////////////////////////////////
-  /*
-   * In prepare (phase 1):
-   * PHASE 1: (prepare)
-   * - post MPI receive buffers asynch
-   * - post device - host send buffer transfer asynch
-   * PHASE 2: (Begin)
-   * - complete all copies
-   * - post MPI send asynch
-   * - post device - device transfers
-   * PHASE 3: (Complete)
-   * - MPI_waitall
-   * - host-device transfers
-   *
-   *********************************
-   * NB could split this further:
-   *--------------------------------
-   * PHASE 1: (Prepare)
-   * - post MPI receive buffers asynch
-   * - post device - host send buffer transfer asynch
-   * PHASE 2: (BeginInterNode)
-   * - complete all copies 
-   * - post MPI send asynch
-   * PHASE 3: (BeginIntraNode)
-   * - post device - device transfers
-   * PHASE 4: (Complete)
-   * - MPI_waitall
-   * - host-device transfers asynch
-   * - (complete all copies) 
-   */
-double CartesianCommunicator::StencilSendToRecvFromPrepare(std::vector<CommsRequest_t> &list,
-							   void *xmit,
-							   int dest,int dox,
-							   void *recv,
-							   int from,int dor,
-							   uint64_t xbytes,uint64_t rbytes,int dir)
-{
-/*
- * Bring sequence from Stencil.h down to lower level.
- * Assume using XeLink is ok
- */  
-  int ncomm  =communicator_halo.size();
-  int commdir=dir%ncomm;
-
-  MPI_Request xrq;
-  MPI_Request rrq;
-
-  int ierr;
-  int gdest = ShmRanks[dest];
-  int gfrom = ShmRanks[from];
-  int gme   = ShmRanks[_processor];
-
-  GRID_ASSERT(dest != _processor);
-  GRID_ASSERT(from != _processor);
-  GRID_ASSERT(gme  == ShmRank);
-  double off_node_bytes=0.0;
-  int tag;
-
-  void * host_recv = NULL;
-  void * host_xmit = NULL;
-
-  /*
-   * PHASE 1: (Prepare)
-   * - post MPI receive buffers asynch
-   * - post device - host send buffer transfer asynch
-   */
-  
-#ifdef GRID_CHECKSUM_COMMS
-  rbytes += 8;
-  xbytes += 8;
-#endif
-
-  if ( dor ) {
-    if ( (gfrom ==MPI_UNDEFINED) || Stencil_force_mpi ) {
-      tag= dir+from*32;
-      host_recv = this->HostBufferMalloc(rbytes);
-      ierr=MPI_Irecv(host_recv,(int)(rbytes/sizeof(int32_t)), MPI_INT32_T,from,tag,communicator_halo[commdir],&rrq);
-      GRID_ASSERT(ierr==0);
-      CommsRequest_t srq;
-      srq.PacketType = InterNodeRecv;
-      srq.bytes      = rbytes;
-      srq.req        = rrq;
-      srq.host_buf   = host_recv;
-      srq.device_buf = recv;
-      srq.tag        = tag;
-      list.push_back(srq);
-      off_node_bytes+=rbytes;
-    }
-  }
-  
-  if (dox) {
-    if ( (gdest == MPI_UNDEFINED) || Stencil_force_mpi ) {
-
-      tag= dir+_processor*32;
-
-      host_xmit = this->HostBufferMalloc(xbytes);
-      CommsRequest_t srq;
-
-#ifdef GRID_CHECKSUM_COMMS
-      uint64_t xbytes_data = xbytes - 8;
-      srq.ev = acceleratorCopyFromDeviceAsynch(xmit, host_xmit,xbytes_data); // Make this Asynch
-      GRID_ASSERT(xbytes % 8 == 0);
-      // flip one bit so that a zero buffer is not consistent
-      uint64_t xsum = checksum_gpu((uint64_t*)xmit, xbytes_data / 8) ^ (checksum_index + 1 + 1000 * tag); 
-      *(uint64_t*)(((char*)host_xmit) + xbytes_data) = xsum;
-#else
-      srq.ev = acceleratorCopyFromDeviceAsynch(xmit, host_xmit,xbytes); // Make this Asynch
-#endif
-      
-      //      ierr =MPI_Isend(host_xmit, xbytes, MPI_CHAR,dest,tag,communicator_halo[commdir],&xrq);
-      //      GRID_ASSERT(ierr==0);
-      //      off_node_bytes+=xbytes;
-
-      srq.PacketType = InterNodeXmit;
-      srq.bytes      = xbytes;
-      //      srq.req        = xrq;
-      srq.host_buf   = host_xmit;
-      srq.device_buf = xmit;
-      srq.tag        = tag;
-      srq.dest       = dest;
-      srq.commdir    = commdir;
-      list.push_back(srq);
-    }
-  }
-
-  return off_node_bytes;
-}
-/*
- * In the interest of better pipelining, poll for completion on each DtoH and 
- * start MPI_ISend in the meantime
- */
-void CartesianCommunicator::StencilSendToRecvFromPollIRecv(std::vector<CommsRequest_t> &list)
-{
-  int pending = 0;
-  do {
-
-    pending = 0;
-
-    for(int idx = 0; idx<list.size();idx++){
-
-      if ( list[idx].PacketType==InterNodeRecv ) {
-
-	int flag = 0;
-	MPI_Status status;
-	int ierr = MPI_Test(&list[idx].req,&flag,&status);
-	assert(ierr==0);
-
-	if ( flag ) {
-	  //	  std::cout << " PollIrecv "<<idx<<" flag "<<flag<<std::endl;
-#ifdef GRID_CHECKSUM_COMMS
- 	  acceleratorCopyToDeviceAsynch(list[idx].host_buf,list[idx].device_buf,list[idx].bytes - 8);
-#else
-	  acceleratorCopyToDeviceAsynch(list[idx].host_buf,list[idx].device_buf,list[idx].bytes);
-#endif
-	  list[idx].PacketType=InterNodeReceiveHtoD;
-	} else {
-	  pending ++;
-	}
-      }
-    }
-    //    std::cout << " PollIrecv "<<pending<<" pending requests"<<std::endl;
-  } while ( pending );
-  
-}
-void CartesianCommunicator::StencilSendToRecvFromPollDtoH(std::vector<CommsRequest_t> &list)
-{
-  int pending = 0;
-  do {
-
-    pending = 0;
-
-    for(int idx = 0; idx<list.size();idx++){
-
-      if ( list[idx].PacketType==InterNodeXmit ) {
-
-	if ( acceleratorEventIsComplete(list[idx].ev) ) {
-
-	  void *host_xmit = list[idx].host_buf;
-	  uint64_t xbytes = list[idx].bytes;
-	  int dest        = list[idx].dest;
-	  int tag         = list[idx].tag;
-	  int commdir     = list[idx].commdir;
-	  ///////////////////
-	  // Send packet
-	  ///////////////////
-
-	  //	  std::cout << " DtoH is complete for index "<<idx<<" calling MPI_Isend "<<std::endl;
-	  
-	  MPI_Request xrq;
-	  int ierr =MPI_Isend(host_xmit, (int)(xbytes/sizeof(int32_t)), MPI_INT32_T,dest,tag,communicator_halo[commdir],&xrq);
-	  GRID_ASSERT(ierr==0);
-
-	  list[idx].req        = xrq; // Update the MPI request in the list
-
-	  list[idx].PacketType=InterNodeXmitISend;
-
-	} else {
-	  // not done, so return to polling loop
-	  pending++;
-	}
-      }
-    }
-  } while (pending);
-}  
-
-double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
-							 void *xmit,void *xmit_comp,
-							 int dest,int dox,
-							 void *recv,void *recv_comp,
-							 int from,int dor,
-							 uint64_t xbytes,uint64_t rbytes,int dir)
-{
-  int ncomm  =communicator_halo.size();
-  int commdir=dir%ncomm;
-
-  MPI_Request xrq;
-  MPI_Request rrq;
-
-  int ierr;
-  int gdest = ShmRanks[dest];
-  int gfrom = ShmRanks[from];
-  int gme   = ShmRanks[_processor];
-
-  GRID_ASSERT(dest != _processor);
-  GRID_ASSERT(from != _processor);
-  GRID_ASSERT(gme  == ShmRank);
-  double off_node_bytes=0.0;
-  int tag;
-
-  void * host_xmit = NULL;
-
-  ////////////////////////////////
-  // Receives already posted
-  // Copies already started
-  ////////////////////////////////
-  /*  
-   * PHASE 2: (Begin)
-   * - complete all copies
-   * - post MPI send asynch
-   */
-#ifdef NVLINK_GET
-  if ( dor ) {
-
-    if ( ! ( (gfrom ==MPI_UNDEFINED) || Stencil_force_mpi ) ) {
-      // Intranode
-      void *shm = (void *) this->ShmBufferTranslate(from,xmit);
-      GRID_ASSERT(shm!=NULL);
-
-      CommsRequest_t srq;
-
-      srq.ev = acceleratorCopyDeviceToDeviceAsynch(shm,recv,rbytes);
-
-      srq.PacketType = IntraNodeRecv;
-      srq.bytes      = xbytes;
-      //      srq.req        = xrq;
-      srq.host_buf   = NULL;
-      srq.device_buf = xmit;
-      srq.tag        = -1;
-      srq.dest       = dest;
-      srq.commdir    = dir;
-      list.push_back(srq);
-    }
-  }  
-#else
-  if (dox) {
-
-    if ( !( (gdest == MPI_UNDEFINED) || Stencil_force_mpi ) ) {
-      // Intranode
-      void *shm = (void *) this->ShmBufferTranslate(dest,recv);
-      GRID_ASSERT(shm!=NULL);
-
-      CommsRequest_t srq;
-      
-      srq.ev = acceleratorCopyDeviceToDeviceAsynch(xmit,shm,xbytes);
-
-      srq.PacketType = IntraNodeXmit;
-      srq.bytes      = xbytes;
-      //      srq.req        = xrq;
-      srq.host_buf   = NULL;
-      srq.device_buf = xmit;
-      srq.tag        = -1;
-      srq.dest       = dest;
-      srq.commdir    = dir;
-      list.push_back(srq);
-      
-    }
-  }
-#endif
-  return off_node_bytes;
-}
-void CartesianCommunicator::StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &list,int dir)
-{
-  acceleratorCopySynchronise(); // Complete all pending copy transfers D2D
-
-  std::vector<MPI_Status> status;
-  std::vector<MPI_Request> MpiRequests;
-    
-  for(int r=0;r<list.size();r++){
-    // Must check each Send buf is clear to reuse
-    if ( list[r].PacketType == InterNodeXmitISend ) MpiRequests.push_back(list[r].req);
-    //    if ( list[r].PacketType == InterNodeRecv ) MpiRequests.push_back(list[r].req); // Already "Test" passed
-  }
-
-  int nreq=MpiRequests.size();
-
-  if (nreq>0) {
-    status.resize(MpiRequests.size());
-    int ierr = MPI_Waitall(MpiRequests.size(),&MpiRequests[0],&status[0]); // Sends are guaranteed in order. No harm in not completing.
-    GRID_ASSERT(ierr==0);
-  }
-  
-  //  for(int r=0;r<nreq;r++){
-  //    if ( list[r].PacketType==InterNodeRecv ) {
-  //      acceleratorCopyToDeviceAsynch(list[r].host_buf,list[r].device_buf,list[r].bytes);
-  //    }
-  //  }
-#ifdef GRID_CHECKSUM_COMMS
-  for(int r=0;r<list.size();r++){
-    if ( list[r].PacketType == InterNodeReceiveHtoD ) {
-      uint64_t rbytes_data = list[r].bytes - 8;
-      uint64_t expected_cs = *(uint64_t*)(((char*)list[r].host_buf) + rbytes_data);
-      uint64_t computed_cs = checksum_gpu((uint64_t*)list[r].device_buf, rbytes_data / 8) ^ (checksum_index + 1 + 1000 * list[r].tag); //
-      if (expected_cs != computed_cs) {
-	// TODO: error message, backtrace, quit
-
-	fprintf(stderr, "GRID_CHECKSUM_COMMS error:\n");
-	fprintf(stderr, " processor = %d\n", (int)_processor);
-	for(int d=0;d<_processors.size();d++)
-	  fprintf(stderr, " processor_coord[%d] = %d\n", d, _processor_coor[d]);
-	fprintf(stderr, " hostname: %s\n", GridHostname());
-	fprintf(stderr, " expected_cs: %ld\n", expected_cs);
-	fprintf(stderr, " computed_cs: %ld\n", computed_cs);
-	fprintf(stderr, " dest: %d\n", list[r].dest);
-	fprintf(stderr, " tag: %d\n", list[r].tag);
-	fprintf(stderr, " commdir: %d\n", list[r].commdir);
-	fprintf(stderr, " bytes: %ld\n", (uint64_t)list[r].bytes);
-
-	fflush(stderr);
-
-	// backtrace
-	int symbols = backtrace(Grid_backtrace_buffer,_NBACKTRACE);
-	backtrace_symbols_fd(Grid_backtrace_buffer,symbols, 2);
-
-	exit(1);
-      }
-    }
-  }
-
-  checksum_index += 1;
-#endif
-  
-  list.resize(0);               // Delete the list
-  this->HostBufferFreeAll();    // Clean up the buffer allocs
-#ifndef NVLINK_GET
-  this->StencilBarrier(); // if PUT must check our nbrs have filled our receive buffers.
-#endif   
-}
-#endif
-////////////////////////////////////////////
-// END PIPELINE MODE / NO CUDA AWARE MPI
-////////////////////////////////////////////
-
 void CartesianCommunicator::StencilBarrier(void)
 {
-  FlightRecorder::StepLog("NodeBarrier");
   MPI_Barrier  (ShmComm);
 }
 //void CartesianCommunicator::SendToRecvFromComplete(std::vector<CommsRequest_t> &list)
@@ -879,45 +412,37 @@ void CartesianCommunicator::StencilBarrier(void)
 //}
 void CartesianCommunicator::Barrier(void)
 {
-  FlightRecorder::StepLog("GridBarrier");
   int ierr = MPI_Barrier(communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
-void CartesianCommunicator::Broadcast(int root,void* data,uint64_t bytes)
+void CartesianCommunicator::Broadcast(int root,void* data, int bytes)
 {
-  FlightRecorder::StepLog("Broadcast");
   int ierr=MPI_Bcast(data,
-		     (int)bytes,
+		     bytes,
 		     MPI_BYTE,
 		     root,
 		     communicator);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 int CartesianCommunicator::RankWorld(void){
   int r;
   MPI_Comm_rank(communicator_world,&r);
   return r;
 }
-void CartesianCommunicator::BarrierWorld(void){
+void CartesianCommunicator::BroadcastWorld(int root,void* data, int bytes)
-  FlightRecorder::StepLog("BarrierWorld");
-  int ierr = MPI_Barrier(communicator_world);
-  GRID_ASSERT(ierr==0);
-}
-void CartesianCommunicator::BroadcastWorld(int root,void* data, uint64_t bytes)
 {
-  FlightRecorder::StepLog("BroadcastWorld");
   int ierr= MPI_Bcast(data,
-		      (int)bytes,
+		      bytes,
 		      MPI_BYTE,
 		      root,
 		      communicator_world);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 
 void CartesianCommunicator::AllToAll(int dim,void  *in,void *out,uint64_t words,uint64_t bytes)
 {
   Coordinate row(_ndimension,1);
-  GRID_ASSERT(dim>=0 && dim<_ndimension);
+  assert(dim>=0 && dim<_ndimension);
 
   //  Split the communicator
   row[dim] = _processors[dim];
@@ -928,7 +453,6 @@ void CartesianCommunicator::AllToAll(int dim,void  *in,void *out,uint64_t words,
 }
 void CartesianCommunicator::AllToAll(void  *in,void *out,uint64_t words,uint64_t bytes)
 {
-  FlightRecorder::StepLog("AllToAll");
   // MPI is a pain and uses "int" arguments
   // 64*64*64*128*16 == 500Million elements of data.
   // When 24*4 bytes multiples get 50x 10^9 >>> 2x10^9 Y2K bug.
@@ -938,8 +462,8 @@ void CartesianCommunicator::AllToAll(void  *in,void *out,uint64_t words,uint64_t
   int ibytes;
   iwords = words;
   ibytes = bytes;
-  GRID_ASSERT(words == iwords); // safe to cast to int ?
+  assert(words == iwords); // safe to cast to int ?
-  GRID_ASSERT(bytes == ibytes); // safe to cast to int ?
+  assert(bytes == ibytes); // safe to cast to int ?
   MPI_Type_contiguous(ibytes,MPI_BYTE,&object);
   MPI_Type_commit(&object);
   MPI_Alltoall(in,iwords,object,out,iwords,object,communicator);

Grid/communicator/Communicator_none.cc

@@ -34,8 +34,6 @@ NAMESPACE_BEGIN(Grid);
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 Grid_MPI_Comm       CartesianCommunicator::communicator_world;
 
-void GridAbort(void) { abort(); }
-
 void CartesianCommunicator::Init(int *argc, char *** arv)
 {
   GlobalSharedMemory::Init(communicator_world);
@@ -47,23 +45,21 @@ void CartesianCommunicator::Init(int *argc, char *** arv)
 CartesianCommunicator::CartesianCommunicator(const Coordinate &processors,const CartesianCommunicator &parent,int &srank) 
   : CartesianCommunicator(processors) 
 {
-  _shm_processors = Coordinate(processors.size(),1);
   srank=0;
   SetCommunicator(communicator_world);
 }
 
 CartesianCommunicator::CartesianCommunicator(const Coordinate &processors)
 {
-  _shm_processors = Coordinate(processors.size(),1);
   _processors = processors;
-  _ndimension = processors.size();  GRID_ASSERT(_ndimension>=1);
+  _ndimension = processors.size();  assert(_ndimension>=1);
   _processor_coor.resize(_ndimension);
   
   // Require 1^N processor grid for fake
   _Nprocessors=1;
   _processor = 0;
   for(int d=0;d<_ndimension;d++) {
-    GRID_ASSERT(_processors[d]==1);
+    assert(_processors[d]==1);
     _processor_coor[d] = 0;
   }
   SetCommunicator(communicator_world);
@@ -89,21 +85,10 @@ void CartesianCommunicator::SendToRecvFrom(void *xmit,
 					   int dest,
 					   void *recv,
 					   int from,
-					   uint64_t bytes)
+					   int bytes)
 {
-  GRID_ASSERT(0);
+  assert(0);
 }
-void CartesianCommunicator::CommsComplete(std::vector<CommsRequest_t> &list){ GRID_ASSERT(list.size()==0);}
-void CartesianCommunicator::SendToRecvFromBegin(std::vector<CommsRequest_t> &list,
-						void *xmit,
-						int dest,
-						void *recv,
-						int from,
-						uint64_t bytes,int dir)
-{
-  GRID_ASSERT(0);
-}
-
 void CartesianCommunicator::AllToAll(int dim,void  *in,void *out,uint64_t words,uint64_t bytes)
 {
   bcopy(in,out,bytes*words);
@@ -115,9 +100,8 @@ void CartesianCommunicator::AllToAll(void  *in,void *out,uint64_t words,uint64_t
 
 int  CartesianCommunicator::RankWorld(void){return 0;}
 void CartesianCommunicator::Barrier(void){}
-void CartesianCommunicator::Broadcast(int root,void* data, uint64_t bytes) {}
+void CartesianCommunicator::Broadcast(int root,void* data, int bytes) {}
-void CartesianCommunicator::BroadcastWorld(int root,void* data, uint64_t bytes) { }
+void CartesianCommunicator::BroadcastWorld(int root,void* data, int bytes) { }
-void CartesianCommunicator::BarrierWorld(void) { }
 int  CartesianCommunicator::RankFromProcessorCoor(Coordinate &coor) {  return 0;}
 void CartesianCommunicator::ProcessorCoorFromRank(int rank, Coordinate &coor){  coor = _processor_coor; }
 void CartesianCommunicator::ShiftedRanks(int dim,int shift,int &source,int &dest)
@@ -126,35 +110,22 @@ void CartesianCommunicator::ShiftedRanks(int dim,int shift,int &source,int &dest
   dest=0;
 }
 
-int CartesianCommunicator::IsOffNode(int rank) { return false; }
-
 double CartesianCommunicator::StencilSendToRecvFrom( void *xmit,
-						     int xmit_to_rank,int dox,
+						     int xmit_to_rank,
 						     void *recv,
-						     int recv_from_rank,int dor,
+						     int recv_from_rank,
-						     uint64_t bytes, int dir)
+						     int bytes, int dir)
 {
   return 2.0*bytes;
 }
-void CartesianCommunicator::StencilSendToRecvFromPollIRecv(std::vector<CommsRequest_t> &list) {};
-void CartesianCommunicator::StencilSendToRecvFromPollDtoH(std::vector<CommsRequest_t> &list) {};
-double CartesianCommunicator::StencilSendToRecvFromPrepare(std::vector<CommsRequest_t> &list,
-							   void *xmit,
-							   int xmit_to_rank,int dox,
-							   void *recv,
-							   int recv_from_rank,int dor,
-							   uint64_t xbytes,uint64_t rbytes, int dir)
-{
-  return 0.0;
-}
 double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
-							 void *xmit, void *xmit_comp,
+							 void *xmit,
-							 int xmit_to_rank,int dox,
+							 int xmit_to_rank,
-							 void *recv, void *recv_comp,
+							 void *recv,
-							 int recv_from_rank,int dor,
+							 int recv_from_rank,
-							 uint64_t xbytes,uint64_t rbytes, int dir)
+							 int bytes, int dir)
 {
-  return xbytes+rbytes;
+  return 2.0*bytes;
 }
 void CartesianCommunicator::StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall,int dir)
 {

Grid/communicator/SharedMemory.cc

@@ -40,9 +40,6 @@ int                 GlobalSharedMemory::_ShmAlloc;
 uint64_t            GlobalSharedMemory::_ShmAllocBytes;
 
 std::vector<void *> GlobalSharedMemory::WorldShmCommBufs;
-#ifndef ACCELERATOR_AWARE_MPI
-void * GlobalSharedMemory::HostCommBuf;
-#endif
 
 Grid_MPI_Comm       GlobalSharedMemory::WorldShmComm;
 int                 GlobalSharedMemory::WorldShmRank;
@@ -58,8 +55,8 @@ int                 GlobalSharedMemory::WorldNode;
 
 void GlobalSharedMemory::SharedMemoryFree(void)
 {
-  GRID_ASSERT(_ShmAlloc);
+  assert(_ShmAlloc);
-  GRID_ASSERT(_ShmAllocBytes>0);
+  assert(_ShmAllocBytes>0);
   for(int r=0;r<WorldShmSize;r++){
     munmap(WorldShmCommBufs[r],_ShmAllocBytes);
   }
@@ -69,26 +66,6 @@ void GlobalSharedMemory::SharedMemoryFree(void)
 /////////////////////////////////
 // Alloc, free shmem region
 /////////////////////////////////
-#ifndef ACCELERATOR_AWARE_MPI
-void *SharedMemory::HostBufferMalloc(size_t bytes){
-  void *ptr = (void *)host_heap_top;
-  host_heap_top  += bytes;
-  host_heap_bytes+= bytes;
-  if (host_heap_bytes >= host_heap_size) {
-    std::cout<< " HostBufferMalloc exceeded heap size -- try increasing with --shm <MB> flag" <<std::endl;
-    std::cout<< " Parameter specified in units of MB (megabytes) " <<std::endl;
-    std::cout<< " Current alloc is " << (bytes/(1024*1024)) <<"MB"<<std::endl;
-    std::cout<< " Current bytes is " << (host_heap_bytes/(1024*1024)) <<"MB"<<std::endl;
-    std::cout<< " Current heap  is " << (host_heap_size/(1024*1024)) <<"MB"<<std::endl;
-    GRID_ASSERT(host_heap_bytes<host_heap_size);
-  }
-  return ptr;
-}
-void SharedMemory::HostBufferFreeAll(void) { 
-  host_heap_top  =(size_t)HostCommBuf;
-  host_heap_bytes=0;
-}
-#endif
 void *SharedMemory::ShmBufferMalloc(size_t bytes){
   //  bytes = (bytes+sizeof(vRealD))&(~(sizeof(vRealD)-1));// align up bytes
   void *ptr = (void *)heap_top;
@@ -100,7 +77,7 @@ void *SharedMemory::ShmBufferMalloc(size_t bytes){
     std::cout<< " Current alloc is " << (bytes/(1024*1024)) <<"MB"<<std::endl;
     std::cout<< " Current bytes is " << (heap_bytes/(1024*1024)) <<"MB"<<std::endl;
     std::cout<< " Current heap  is " << (heap_size/(1024*1024)) <<"MB"<<std::endl;
-    GRID_ASSERT(heap_bytes<heap_size);
+    assert(heap_bytes<heap_size);
   }
   //std::cerr << "ShmBufferMalloc "<<std::hex<< ptr<<" - "<<((uint64_t)ptr+bytes)<<std::dec<<std::endl;
   return ptr;
@@ -114,59 +91,6 @@ void *SharedMemory::ShmBufferSelf(void)
   //std::cerr << "ShmBufferSelf "<<ShmRank<<" "<<std::hex<< ShmCommBufs[ShmRank] <<std::dec<<std::endl;
   return ShmCommBufs[ShmRank];
 }
-static inline int divides(int a,int b)
-{
-  return ( b == ( (b/a)*a ) );
-}
-void GlobalSharedMemory::GetShmDims(const Coordinate &WorldDims,Coordinate &ShmDims)
-{
-  ////////////////////////////////////////////////////////////////
-  // Allow user to configure through environment variable
-  ////////////////////////////////////////////////////////////////
-  char* str = getenv(("GRID_SHM_DIMS_" + std::to_string(ShmDims.size())).c_str());
-  if ( str ) {
-    std::vector<int> IntShmDims;
-    GridCmdOptionIntVector(std::string(str),IntShmDims);
-    GRID_ASSERT(IntShmDims.size() == WorldDims.size());
-    long ShmSize = 1;
-    for (int dim=0;dim<WorldDims.size();dim++) {
-      ShmSize *= (ShmDims[dim] = IntShmDims[dim]);
-      GRID_ASSERT(divides(ShmDims[dim],WorldDims[dim]));
-    }
-    GRID_ASSERT(ShmSize == WorldShmSize);
-    return;
-  }
-  
-  ////////////////////////////////////////////////////////////////
-  // Powers of 2,3,5 only in prime decomposition for now
-  ////////////////////////////////////////////////////////////////
-  int ndimension = WorldDims.size();
-  ShmDims=Coordinate(ndimension,1);
-
-  std::vector<int> primes({2,3,5});
-
-  int dim = 0;
-  int last_dim = ndimension - 1;
-  int AutoShmSize = 1;
-  while(AutoShmSize != WorldShmSize) {
-    int p;
-    for(p=0;p<primes.size();p++) {
-      int prime=primes[p];
-      if ( divides(prime,WorldDims[dim]/ShmDims[dim])
-        && divides(prime,WorldShmSize/AutoShmSize)  ) {
-  AutoShmSize*=prime;
-  ShmDims[dim]*=prime;
-  last_dim = dim;
-  break;
-      }
-    }
-    if (p == primes.size() && last_dim == dim) {
-      std::cerr << "GlobalSharedMemory::GetShmDims failed" << std::endl;
-      exit(EXIT_FAILURE);
-    }
-    dim=(dim+1) %ndimension;
-  }
-}
 
 NAMESPACE_END(Grid); 
 

Grid/communicator/SharedMemory.h

@@ -46,40 +46,8 @@ NAMESPACE_BEGIN(Grid);
 
 #if defined (GRID_COMMS_MPI3) 
 typedef MPI_Comm    Grid_MPI_Comm;
-typedef MPI_Request MpiCommsRequest_t;
-#ifdef ACCELERATOR_AWARE_MPI
 typedef MPI_Request CommsRequest_t;
 #else 
-/*
- * Enable state transitions as each packet flows.
- */
-enum PacketType_t {
-  FaceGather,
-  InterNodeXmit,
-  InterNodeRecv,
-  IntraNodeXmit,
-  IntraNodeRecv,
-  InterNodeXmitISend,
-  InterNodeReceiveHtoD
-};
-/*
- *Package arguments needed for various actions along packet flow
- */
-typedef struct {
-  PacketType_t PacketType;
-  void *host_buf;
-  void *device_buf;
-  int dest;
-  int tag;
-  int commdir;
-  unsigned long bytes;
-  acceleratorEvent_t ev;
-  MpiCommsRequest_t req;
-} CommsRequest_t;
-#endif
-
-#else 
-typedef int MpiCommsRequest_t;
 typedef int CommsRequest_t;
 typedef int Grid_MPI_Comm;
 #endif
@@ -107,9 +75,7 @@ public:
   static int           Hugepages;
 
   static std::vector<void *> WorldShmCommBufs;
-#ifndef ACCELERATOR_AWARE_MPI
+
-  static void *HostCommBuf;
-#endif
   static Grid_MPI_Comm WorldComm;
   static int           WorldRank;
   static int           WorldSize;
@@ -127,17 +93,16 @@ public:
   // Create an optimal reordered communicator that makes MPI_Cart_create get it right
   //////////////////////////////////////////////////////////////////////////////////////
   static void Init(Grid_MPI_Comm comm); // Typically MPI_COMM_WORLD
-  // Turns MPI_COMM_WORLD into right layout for Cartesian
+  static void OptimalCommunicator            (const Coordinate &processors,Grid_MPI_Comm & optimal_comm);  // Turns MPI_COMM_WORLD into right layout for Cartesian
-  static void OptimalCommunicator            (const Coordinate &processors,Grid_MPI_Comm & optimal_comm,Coordinate &ShmDims); 
+  static void OptimalCommunicatorHypercube   (const Coordinate &processors,Grid_MPI_Comm & optimal_comm);  // Turns MPI_COMM_WORLD into right layout for Cartesian
-  static void OptimalCommunicatorHypercube   (const Coordinate &processors,Grid_MPI_Comm & optimal_comm,Coordinate &ShmDims); 
+  static void OptimalCommunicatorSharedMemory(const Coordinate &processors,Grid_MPI_Comm & optimal_comm);  // Turns MPI_COMM_WORLD into right layout for Cartesian
-  static void OptimalCommunicatorSharedMemory(const Coordinate &processors,Grid_MPI_Comm & optimal_comm,Coordinate &ShmDims); 
   static void GetShmDims(const Coordinate &WorldDims,Coordinate &ShmDims);
   ///////////////////////////////////////////////////
   // Provide shared memory facilities off comm world
   ///////////////////////////////////////////////////
   static void SharedMemoryAllocate(uint64_t bytes, int flags);
   static void SharedMemoryFree(void);
-  //  static void SharedMemoryCopy(void *dest,void *src,size_t bytes);
+  static void SharedMemoryCopy(void *dest,void *src,size_t bytes);
   static void SharedMemoryZero(void *dest,size_t bytes);
 
 };
@@ -154,13 +119,6 @@ private:
   size_t heap_bytes;
   size_t heap_size;
 
-#ifndef ACCELERATOR_AWARE_MPI
-  size_t host_heap_top;  // set in free all
-  size_t host_heap_bytes;// set in free all
-  void *HostCommBuf;     // set in SetCommunicator
-  size_t host_heap_size; // set in SetCommunicator
-#endif
-  
 protected:
 
   Grid_MPI_Comm    ShmComm; // for barriers
@@ -192,10 +150,7 @@ public:
   void *ShmBufferTranslate(int rank,void * local_p);
   void *ShmBufferMalloc(size_t bytes);
   void  ShmBufferFreeAll(void) ;
-#ifndef ACCELERATOR_AWARE_MPI
+  
-  void *HostBufferMalloc(size_t bytes);
-  void HostBufferFreeAll(void);
-#endif  
   //////////////////////////////////////////////////////////////////////////
   // Make info on Nodes & ranks and Shared memory available
   //////////////////////////////////////////////////////////////////////////

Grid/communicator/SharedMemoryMPI.cc

@@ -27,8 +27,6 @@ Author: Christoph Lehner <christoph@lhnr.de>
 *************************************************************************************/
 /*  END LEGAL */
 
-#define Mheader "SharedMemoryMpi: "
-
 #include <Grid/GridCore.h>
 #include <pwd.h>
 
@@ -38,127 +36,16 @@ Author: Christoph Lehner <christoph@lhnr.de>
 #ifdef GRID_HIP
 #include <hip/hip_runtime_api.h>
 #endif
-#ifdef GRID_SYCL
+#ifdef GRID_SYCl
-#ifdef ACCELERATOR_AWARE_MPI
-#define GRID_SYCL_LEVEL_ZERO_IPC
-#define SHM_SOCKETS
-#else
-#endif 
-#include <syscall.h>
-#endif
 
-#include <sys/socket.h>
+#endif
-#include <sys/un.h>
 
 NAMESPACE_BEGIN(Grid); 
-
+#define header "SharedMemoryMpi: "
-#ifdef SHM_SOCKETS
-
-/*
- * Barbaric extra intranode communication route in case we need sockets to pass FDs
- * Forced by level_zero not being nicely designed
- */
-static int sock;
-static const char *sock_path_fmt = "/tmp/GridUnixSocket.%d";
-static char sock_path[256];
-class UnixSockets {
-public:
-  static void Open(int rank)
-  {
-    int errnum;
-
-    sock = socket(AF_UNIX, SOCK_DGRAM, 0);  GRID_ASSERT(sock>0);
-
-    struct sockaddr_un sa_un = { 0 };
-    sa_un.sun_family = AF_UNIX;
-    snprintf(sa_un.sun_path, sizeof(sa_un.sun_path),sock_path_fmt,rank);
-    unlink(sa_un.sun_path);
-    if (bind(sock, (struct sockaddr *)&sa_un, sizeof(sa_un))) {
-      perror("bind failure");
-      exit(EXIT_FAILURE);
-    }
-  }
-
-  static int RecvFileDescriptor(void)
-  {
-    int n;
-    int fd;
-    char buf[1];
-    struct iovec iov;
-    struct msghdr msg;
-    struct cmsghdr *cmsg;
-    char cms[CMSG_SPACE(sizeof(int))];
-
-    iov.iov_base = buf;
-    iov.iov_len = 1;
-
-    memset(&msg, 0, sizeof msg);
-    msg.msg_name = 0;
-    msg.msg_namelen = 0;
-    msg.msg_iov = &iov;
-    msg.msg_iovlen = 1;
-
-    msg.msg_control = (caddr_t)cms;
-    msg.msg_controllen = sizeof cms;
-
-    if((n=recvmsg(sock, &msg, 0)) < 0) {
-      perror("recvmsg failed");
-      return -1;
-    }
-    if(n == 0){
-      perror("recvmsg returned 0");
-      return -1;
-    }
-    cmsg = CMSG_FIRSTHDR(&msg);
-
-    memmove(&fd, CMSG_DATA(cmsg), sizeof(int));
-
-    return fd;
-  }
-
-  static void SendFileDescriptor(int fildes,int xmit_to_rank)
-  {
-    struct msghdr msg;
-    struct iovec iov;
-    struct cmsghdr *cmsg = NULL;
-    char ctrl[CMSG_SPACE(sizeof(int))];
-    char data = ' ';
-
-    memset(&msg, 0, sizeof(struct msghdr));
-    memset(ctrl, 0, CMSG_SPACE(sizeof(int)));
-    iov.iov_base = &data;
-    iov.iov_len = sizeof(data);
-    
-    sprintf(sock_path,sock_path_fmt,xmit_to_rank);
-    
-    struct sockaddr_un sa_un = { 0 };
-    sa_un.sun_family = AF_UNIX;
-    snprintf(sa_un.sun_path, sizeof(sa_un.sun_path),sock_path_fmt,xmit_to_rank);
-
-    msg.msg_name = (void *)&sa_un;
-    msg.msg_namelen = sizeof(sa_un);
-    msg.msg_iov = &iov;
-    msg.msg_iovlen = 1;
-    msg.msg_controllen =  CMSG_SPACE(sizeof(int));
-    msg.msg_control = ctrl;
-
-    cmsg = CMSG_FIRSTHDR(&msg);
-    cmsg->cmsg_level = SOL_SOCKET;
-    cmsg->cmsg_type = SCM_RIGHTS;
-    cmsg->cmsg_len = CMSG_LEN(sizeof(int));
-
-    *((int *) CMSG_DATA(cmsg)) = fildes;
-
-    sendmsg(sock, &msg, 0);
-  };
-};
-#endif
-
-
 /*Construct from an MPI communicator*/
 void GlobalSharedMemory::Init(Grid_MPI_Comm comm)
 {
-  GRID_ASSERT(_ShmSetup==0);
+  assert(_ShmSetup==0);
   WorldComm = comm;
   MPI_Comm_rank(WorldComm,&WorldRank);
   MPI_Comm_size(WorldComm,&WorldSize);
@@ -177,14 +64,14 @@ void GlobalSharedMemory::Init(Grid_MPI_Comm comm)
   MPI_Comm_size(WorldShmComm     ,&WorldShmSize);
 
   if ( WorldRank == 0) {
-    std::cout << Mheader " World communicator of size " <<WorldSize << std::endl;  
+    std::cout << header " World communicator of size " <<WorldSize << std::endl;  
-    std::cout << Mheader " Node  communicator of size " <<WorldShmSize << std::endl;
+    std::cout << header " Node  communicator of size " <<WorldShmSize << std::endl;
   }
   // WorldShmComm, WorldShmSize, WorldShmRank
 
   // WorldNodes
   WorldNodes = WorldSize/WorldShmSize;
-  GRID_ASSERT( (WorldNodes * WorldShmSize) == WorldSize );
+  assert( (WorldNodes * WorldShmSize) == WorldSize );
 
 
   // FIXME: Check all WorldShmSize are the same ?
@@ -209,7 +96,7 @@ void GlobalSharedMemory::Init(Grid_MPI_Comm comm)
   MyGroup.resize(WorldShmSize);
   for(int rank=0;rank<WorldSize;rank++){
     if(WorldShmRanks[rank]!=MPI_UNDEFINED){
-      GRID_ASSERT(g<WorldShmSize);
+      assert(g<WorldShmSize);
       MyGroup[g++] = rank;
     }
   }
@@ -225,7 +112,7 @@ void GlobalSharedMemory::Init(Grid_MPI_Comm comm)
   // global sum leaders over comm world
   ///////////////////////////////////////////////////////////////////
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&leaders_1hot[0],WorldSize,MPI_INT,MPI_SUM,WorldComm);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 
   ///////////////////////////////////////////////////////////////////
   // find the group leaders world rank
@@ -246,7 +133,7 @@ void GlobalSharedMemory::Init(Grid_MPI_Comm comm)
       WorldNode=g;
     }
   }
-  GRID_ASSERT(WorldNode!=-1);
+  assert(WorldNode!=-1);
   _ShmSetup=1;
 }
 // Gray encode support 
@@ -265,7 +152,7 @@ int Log2Size(int TwoToPower,int MAXLOG2)
   }
   return log2size;
 }
-void GlobalSharedMemory::OptimalCommunicator(const Coordinate &processors,Grid_MPI_Comm & optimal_comm,Coordinate &SHM)
+void GlobalSharedMemory::OptimalCommunicator(const Coordinate &processors,Grid_MPI_Comm & optimal_comm)
 {
   //////////////////////////////////////////////////////////////////////////////
   // Look and see if it looks like an HPE 8600 based on hostname conventions
@@ -278,17 +165,69 @@ void GlobalSharedMemory::OptimalCommunicator(const Coordinate &processors,Grid_M
   gethostname(name,namelen);
   int nscan = sscanf(name,"r%di%dn%d",&R,&I,&N) ;
 
-  if(nscan==3 && HPEhypercube ) OptimalCommunicatorHypercube(processors,optimal_comm,SHM);
+  if(nscan==3 && HPEhypercube ) OptimalCommunicatorHypercube(processors,optimal_comm);
-  else                          OptimalCommunicatorSharedMemory(processors,optimal_comm,SHM);
+  else                          OptimalCommunicatorSharedMemory(processors,optimal_comm);
 }
+static inline int divides(int a,int b)
+{
+  return ( b == ( (b/a)*a ) );
+}
+void GlobalSharedMemory::GetShmDims(const Coordinate &WorldDims,Coordinate &ShmDims)
+{
+  ////////////////////////////////////////////////////////////////
+  // Allow user to configure through environment variable
+  ////////////////////////////////////////////////////////////////
+  char* str = getenv(("GRID_SHM_DIMS_" + std::to_string(ShmDims.size())).c_str());
+  if ( str ) {
+    std::vector<int> IntShmDims;
+    GridCmdOptionIntVector(std::string(str),IntShmDims);
+    assert(IntShmDims.size() == WorldDims.size());
+    long ShmSize = 1;
+    for (int dim=0;dim<WorldDims.size();dim++) {
+      ShmSize *= (ShmDims[dim] = IntShmDims[dim]);
+      assert(divides(ShmDims[dim],WorldDims[dim]));
+    }
+    assert(ShmSize == WorldShmSize);
+    return;
+  }
   
-void GlobalSharedMemory::OptimalCommunicatorHypercube(const Coordinate &processors,Grid_MPI_Comm & optimal_comm,Coordinate &SHM)
+  ////////////////////////////////////////////////////////////////
+  // Powers of 2,3,5 only in prime decomposition for now
+  ////////////////////////////////////////////////////////////////
+  int ndimension = WorldDims.size();
+  ShmDims=Coordinate(ndimension,1);
+
+  std::vector<int> primes({2,3,5});
+
+  int dim = 0;
+  int last_dim = ndimension - 1;
+  int AutoShmSize = 1;
+  while(AutoShmSize != WorldShmSize) {
+    int p;
+    for(p=0;p<primes.size();p++) {
+      int prime=primes[p];
+      if ( divides(prime,WorldDims[dim]/ShmDims[dim])
+        && divides(prime,WorldShmSize/AutoShmSize)  ) {
+	AutoShmSize*=prime;
+	ShmDims[dim]*=prime;
+	last_dim = dim;
+	break;
+      }
+    }
+    if (p == primes.size() && last_dim == dim) {
+      std::cerr << "GlobalSharedMemory::GetShmDims failed" << std::endl;
+      exit(EXIT_FAILURE);
+    }
+    dim=(dim+1) %ndimension;
+  }
+}
+void GlobalSharedMemory::OptimalCommunicatorHypercube(const Coordinate &processors,Grid_MPI_Comm & optimal_comm)
 {
   ////////////////////////////////////////////////////////////////
   // Assert power of two shm_size.
   ////////////////////////////////////////////////////////////////
   int log2size = Log2Size(WorldShmSize,MAXLOG2RANKSPERNODE);
-  GRID_ASSERT(log2size != -1);
+  assert(log2size != -1);
 
   ////////////////////////////////////////////////////////////////
   // Identify the hypercube coordinate of this node using hostname
@@ -309,7 +248,7 @@ void GlobalSharedMemory::OptimalCommunicatorHypercube(const Coordinate &processo
   // Parse ICE-XA hostname to get hypercube location
   gethostname(name,namelen);
   int nscan = sscanf(name,"r%di%dn%d",&R,&I,&N) ;
-  GRID_ASSERT(nscan==3);
+  assert(nscan==3);
 
   int nlo = N%9;
   int nhi = N/9;
@@ -333,8 +272,8 @@ void GlobalSharedMemory::OptimalCommunicatorHypercube(const Coordinate &processo
   //////////////////////////////////////////////////////////////////
   MPI_Bcast(&rootcoor, sizeof(rootcoor), MPI_BYTE, 0, WorldComm); 
   hypercoor=hypercoor-rootcoor;
-  GRID_ASSERT(hypercoor<WorldSize);
+  assert(hypercoor<WorldSize);
-  GRID_ASSERT(hypercoor>=0);
+  assert(hypercoor>=0);
 
   //////////////////////////////////////
   // Printing
@@ -355,7 +294,6 @@ void GlobalSharedMemory::OptimalCommunicatorHypercube(const Coordinate &processo
   Coordinate HyperCoor(ndimension);
 
   GetShmDims(WorldDims,ShmDims);
-  SHM = ShmDims;
 
   ////////////////////////////////////////////////////////////////
   // Establish torus of processes and nodes with sub-blockings
@@ -382,7 +320,7 @@ void GlobalSharedMemory::OptimalCommunicatorHypercube(const Coordinate &processo
   for(int i=0;i<ndimension;i++){
     Nprocessors*=processors[i];
   }
-  GRID_ASSERT(WorldSize==Nprocessors);
+  assert(WorldSize==Nprocessors);
 
   ////////////////////////////////////////////////////////////////
   // Establish mapping between lexico physics coord and WorldRank
@@ -401,9 +339,9 @@ void GlobalSharedMemory::OptimalCommunicatorHypercube(const Coordinate &processo
   // Build the new communicator
   /////////////////////////////////////////////////////////////////
   int ierr= MPI_Comm_split(WorldComm,0,rank,&optimal_comm);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
-void GlobalSharedMemory::OptimalCommunicatorSharedMemory(const Coordinate &processors,Grid_MPI_Comm & optimal_comm,Coordinate &SHM)
+void GlobalSharedMemory::OptimalCommunicatorSharedMemory(const Coordinate &processors,Grid_MPI_Comm & optimal_comm)
 {
   ////////////////////////////////////////////////////////////////
   // Identify subblock of ranks on node spreading across dims
@@ -415,8 +353,6 @@ void GlobalSharedMemory::OptimalCommunicatorSharedMemory(const Coordinate &proce
   Coordinate ShmCoor(ndimension);    Coordinate NodeCoor(ndimension);   Coordinate WorldCoor(ndimension);
 
   GetShmDims(WorldDims,ShmDims);
-  SHM=ShmDims;
-
   ////////////////////////////////////////////////////////////////
   // Establish torus of processes and nodes with sub-blockings
   ////////////////////////////////////////////////////////////////
@@ -431,8 +367,7 @@ void GlobalSharedMemory::OptimalCommunicatorSharedMemory(const Coordinate &proce
   for(int i=0;i<ndimension;i++){
     Nprocessors*=processors[i];
   }
-  //  std::cerr << " WorldSize "<<WorldSize << " Nprocessors "<<Nprocessors<<" "<<processors<<std::endl; 
+  assert(WorldSize==Nprocessors);
-  GRID_ASSERT(WorldSize==Nprocessors);
 
   ////////////////////////////////////////////////////////////////
   // Establish mapping between lexico physics coord and WorldRank
@@ -448,7 +383,7 @@ void GlobalSharedMemory::OptimalCommunicatorSharedMemory(const Coordinate &proce
   // Build the new communicator
   /////////////////////////////////////////////////////////////////
   int ierr= MPI_Comm_split(WorldComm,0,rank,&optimal_comm);
-  GRID_ASSERT(ierr==0);
+  assert(ierr==0);
 }
 ////////////////////////////////////////////////////////////////////////////////////////////
 // SHMGET
@@ -456,9 +391,9 @@ void GlobalSharedMemory::OptimalCommunicatorSharedMemory(const Coordinate &proce
 #ifdef GRID_MPI3_SHMGET
 void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 {
-  std::cout << Mheader "SharedMemoryAllocate "<< bytes<< " shmget implementation "<<std::endl;
+  std::cout << header "SharedMemoryAllocate "<< bytes<< " shmget implementation "<<std::endl;
-  GRID_ASSERT(_ShmSetup==1);
+  assert(_ShmSetup==1);
-  GRID_ASSERT(_ShmAlloc==0);
+  assert(_ShmAlloc==0);
 
   //////////////////////////////////////////////////////////////////////////////////////////////////////////
   // allocate the shared windows for our group
@@ -516,11 +451,51 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 // Hugetlbfs mapping intended
 ////////////////////////////////////////////////////////////////////////////////////////////
 #if defined(GRID_CUDA) ||defined(GRID_HIP)  || defined(GRID_SYCL)
+
+//if defined(GRID_SYCL)
+#if 0
 void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 {
   void * ShmCommBuf ; 
-  GRID_ASSERT(_ShmSetup==1);
+  assert(_ShmSetup==1);
-  GRID_ASSERT(_ShmAlloc==0);
+  assert(_ShmAlloc==0);
+
+  //////////////////////////////////////////////////////////////////////////////////////////////////////////
+  // allocate the pointer array for shared windows for our group
+  //////////////////////////////////////////////////////////////////////////////////////////////////////////
+  MPI_Barrier(WorldShmComm);
+  WorldShmCommBufs.resize(WorldShmSize);
+
+  ///////////////////////////////////////////////////////////////////////////////////////////////////////////
+  // Each MPI rank should allocate our own buffer
+  ///////////////////////////////////////////////////////////////////////////////////////////////////////////
+  ShmCommBuf = acceleratorAllocDevice(bytes);
+
+  if (ShmCommBuf == (void *)NULL ) {
+    std::cerr << " SharedMemoryMPI.cc acceleratorAllocDevice failed NULL pointer for " << bytes<<" bytes " << std::endl;
+    exit(EXIT_FAILURE);  
+  }
+
+  std::cout << WorldRank << header " SharedMemoryMPI.cc acceleratorAllocDevice "<< bytes 
+	    << "bytes at "<< std::hex<< ShmCommBuf <<std::dec<<" for comms buffers " <<std::endl;
+
+  SharedMemoryZero(ShmCommBuf,bytes);
+
+  assert(WorldShmSize == 1);
+  for(int r=0;r<WorldShmSize;r++){
+    WorldShmCommBufs[r] = ShmCommBuf;
+  }
+  _ShmAllocBytes=bytes;
+  _ShmAlloc=1;
+}
+#endif
+
+#if defined(GRID_CUDA) ||defined(GRID_HIP) ||defined(GRID_SYCL)  
+void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
+{
+  void * ShmCommBuf ; 
+  assert(_ShmSetup==1);
+  assert(_ShmAlloc==0);
 
   //////////////////////////////////////////////////////////////////////////////////////////////////////////
   // allocate the pointer array for shared windows for our group
@@ -538,64 +513,51 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
   ///////////////////////////////////////////////////////////////////////////////////////////////////////////
   // Each MPI rank should allocate our own buffer
   ///////////////////////////////////////////////////////////////////////////////////////////////////////////
-#ifndef ACCELERATOR_AWARE_MPI
+#ifdef GRID_SYCL_LEVEL_ZERO_IPC
-  // printf("Host buffer allocate for GPU non-aware MPI\n");
+  auto zeDevice = cl::sycl::get_native<cl::sycl::backend::level_zero>(theGridAccelerator->get_device());
-  HostCommBuf= malloc(bytes); /// CHANGE THIS TO malloc_host
+  auto zeContext= cl::sycl::get_native<cl::sycl::backend::level_zero>(theGridAccelerator->get_context());
-#endif  
+  ze_device_mem_alloc_desc_t zeDesc = {};
+  zeMemAllocDevice(zeContext,&zeDesc,bytes,2*1024*1024,zeDevice,&ShmCommBuf);
+  std::cout << WorldRank << header " SharedMemoryMPI.cc zeMemAllocDevice "<< bytes 
+	      << "bytes at "<< std::hex<< ShmCommBuf <<std::dec<<" for comms buffers " <<std::endl;
+#else  
   ShmCommBuf = acceleratorAllocDevice(bytes);
+#endif  
   if (ShmCommBuf == (void *)NULL ) {
-    std::cerr << "SharedMemoryMPI.cc acceleratorAllocDevice failed NULL pointer for " << bytes<<" bytes " << std::endl;
+    std::cerr << " SharedMemoryMPI.cc acceleratorAllocDevice failed NULL pointer for " << bytes<<" bytes " << std::endl;
     exit(EXIT_FAILURE);  
   }
-  if ( WorldRank == 0 ){
+  //  if ( WorldRank == 0 ){
-    std::cout << Mheader " acceleratorAllocDevice "<< bytes 
+  if ( 1 ){
-	      << "bytes at "<< std::hex<< ShmCommBuf << " - "<<(bytes-1+(uint64_t)ShmCommBuf) <<std::dec<<" for comms buffers " <<std::endl;
+    std::cout << WorldRank << header " SharedMemoryMPI.cc acceleratorAllocDevice "<< bytes 
-  }
+	      << "bytes at "<< std::hex<< ShmCommBuf <<std::dec<<" for comms buffers " <<std::endl;
-  SharedMemoryZero(ShmCommBuf,bytes);
-  if ( WorldRank == 0 ){
-    std::cout<< Mheader "Setting up IPC"<<std::endl;
   }
+  //  SharedMemoryZero(ShmCommBuf,bytes);
+  std::cout<< "Setting up IPC"<<std::endl;
   ///////////////////////////////////////////////////////////////////////////////////////////////////////////
   // Loop over ranks/gpu's on our node
   ///////////////////////////////////////////////////////////////////////////////////////////////////////////
-#ifdef SHM_SOCKETS
-  UnixSockets::Open(WorldShmRank);
-#endif
   for(int r=0;r<WorldShmSize;r++){
 
-    MPI_Barrier(WorldShmComm);
-
 #ifndef GRID_MPI3_SHM_NONE
     //////////////////////////////////////////////////
     // If it is me, pass around the IPC access key
     //////////////////////////////////////////////////
-    void * thisBuf = ShmCommBuf;
-    if(!Stencil_force_mpi) {
 #ifdef GRID_SYCL_LEVEL_ZERO_IPC
-    typedef struct { int fd; pid_t pid ; ze_ipc_mem_handle_t ze; } clone_mem_t;
+    ze_ipc_mem_handle_t handle;
-
-    auto zeDevice    = sycl::get_native<sycl::backend::ext_oneapi_level_zero>(theGridAccelerator->get_device());
-    auto zeContext   = sycl::get_native<sycl::backend::ext_oneapi_level_zero>(theGridAccelerator->get_context());
-      
-    ze_ipc_mem_handle_t ihandle;
-    clone_mem_t handle;
-    
     if ( r==WorldShmRank ) { 
-      auto err = zeMemGetIpcHandle(zeContext,ShmCommBuf,&ihandle);
+      auto err = zeMemGetIpcHandle(zeContext,ShmCommBuf,&handle);
       if ( err != ZE_RESULT_SUCCESS ) {
 	std::cerr << "SharedMemoryMPI.cc zeMemGetIpcHandle failed for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
 	exit(EXIT_FAILURE);
+      } else {
+	std::cerr << "SharedMemoryMPI.cc zeMemGetIpcHandle succeeded for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
       }
-      memcpy((void *)&handle.fd,(void *)&ihandle,sizeof(int));
+      std::cerr<<"Allocated IpcHandle rank "<<r<<" (hex) ";
-      handle.pid = getpid();
+      for(int c=0;c<ZE_MAX_IPC_HANDLE_SIZE;c++){
-      memcpy((void *)&handle.ze,(void *)&ihandle,sizeof(ihandle));
+	std::cerr<<std::hex<<(uint32_t)((uint8_t)handle.data[c])<<std::dec;
-#ifdef SHM_SOCKETS
-      for(int rr=0;rr<WorldShmSize;rr++){
-	if(rr!=r){
-	  UnixSockets::SendFileDescriptor(handle.fd,rr);
-	}
       }
-#endif
+      std::cerr<<std::endl;
     }
 #endif
 #ifdef GRID_CUDA
@@ -618,57 +580,39 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
       }
     }
 #endif
-
     //////////////////////////////////////////////////
     // Share this IPC handle across the Shm Comm
     //////////////////////////////////////////////////
     { 
-      MPI_Barrier(WorldShmComm);
       int ierr=MPI_Bcast(&handle,
 			 sizeof(handle),
 			 MPI_BYTE,
 			 r,
 			 WorldShmComm);
-      GRID_ASSERT(ierr==0);
+      assert(ierr==0);
     }
     
     ///////////////////////////////////////////////////////////////
     // If I am not the source, overwrite thisBuf with remote buffer
     ///////////////////////////////////////////////////////////////
-
+    void * thisBuf = ShmCommBuf;
 #ifdef GRID_SYCL_LEVEL_ZERO_IPC
     if ( r!=WorldShmRank ) {
       thisBuf = nullptr;
-      int myfd;
+      std::cerr<<"Using IpcHandle rank "<<r<<" ";
-#ifdef SHM_SOCKETS
+      for(int c=0;c<ZE_MAX_IPC_HANDLE_SIZE;c++){
-      myfd=UnixSockets::RecvFileDescriptor();
+	std::cerr<<std::hex<<(uint32_t)((uint8_t)handle.data[c])<<std::dec;
-#else
-      //      std::cout<<"mapping seeking remote pid/fd "
-      //	       <<handle.pid<<"/"
-      //	       <<handle.fd<<std::endl;
-
-      int pidfd = syscall(SYS_pidfd_open,handle.pid,0);
-      //      std::cout<<"Using IpcHandle pidfd "<<pidfd<<"\n";
-      //      int myfd  = syscall(SYS_pidfd_getfd,pidfd,handle.fd,0);
-      myfd  = syscall(438,pidfd,handle.fd,0);
-      int err_t = errno;
-      if (myfd < 0) {
-        fprintf(stderr,"pidfd_getfd returned %d errno was %d\n", myfd,err_t); fflush(stderr);
-	perror("pidfd_getfd failed ");
-	assert(0);
       }
-#endif
+      std::cerr<<std::endl;
-      //      std::cout<<"Using IpcHandle mapped remote pid "<<handle.pid <<" FD "<<handle.fd <<" to myfd "<<myfd<<"\n";
+      auto err = zeMemOpenIpcHandle(zeContext,zeDevice,handle,0,&thisBuf);
-      memcpy((void *)&ihandle,(void *)&handle.ze,sizeof(ihandle));
-      memcpy((void *)&ihandle,(void *)&myfd,sizeof(int));
-
-      auto err = zeMemOpenIpcHandle(zeContext,zeDevice,ihandle,0,&thisBuf);
       if ( err != ZE_RESULT_SUCCESS ) {
 	std::cerr << "SharedMemoryMPI.cc "<<zeContext<<" "<<zeDevice<<std::endl;
 	std::cerr << "SharedMemoryMPI.cc zeMemOpenIpcHandle failed for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl; 
 	exit(EXIT_FAILURE);
+      } else {
+	std::cerr << "SharedMemoryMPI.cc zeMemOpenIpcHandle succeeded for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
       }
-      GRID_ASSERT(thisBuf!=nullptr);
+      assert(thisBuf!=nullptr);
     }
 #endif
 #ifdef GRID_CUDA
@@ -692,25 +636,24 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
     ///////////////////////////////////////////////////////////////
     // Save a copy of the device buffers
     ///////////////////////////////////////////////////////////////
-    }
     WorldShmCommBufs[r] = thisBuf;
 #else
     WorldShmCommBufs[r] = ShmCommBuf;
 #endif
-    MPI_Barrier(WorldShmComm);
   }
 
   _ShmAllocBytes=bytes;
   _ShmAlloc=1;
 }
+#endif
 
 #else 
 #ifdef GRID_MPI3_SHMMMAP
 void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 {
-  std::cout << Mheader "SharedMemoryAllocate "<< bytes<< " MMAP implementation "<< GRID_SHM_PATH <<std::endl;
+  std::cout << header "SharedMemoryAllocate "<< bytes<< " MMAP implementation "<< GRID_SHM_PATH <<std::endl;
-  GRID_ASSERT(_ShmSetup==1);
+  assert(_ShmSetup==1);
-  GRID_ASSERT(_ShmAlloc==0);
+  assert(_ShmAlloc==0);
   //////////////////////////////////////////////////////////////////////////////////////////////////////////
   // allocate the shared windows for our group
   //////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -740,14 +683,13 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
     void *ptr = (void *) mmap(NULL, bytes, PROT_READ | PROT_WRITE, mmap_flag,fd, 0); 
     if ( ptr == (void *)MAP_FAILED ) {    
       printf("mmap %s failed\n",shm_name);
-      perror("failed mmap");      GRID_ASSERT(0);    
+      perror("failed mmap");      assert(0);    
     }
-    GRID_ASSERT(((uint64_t)ptr&0x3F)==0);
+    assert(((uint64_t)ptr&0x3F)==0);
     close(fd);
     WorldShmCommBufs[r] =ptr;
-    //    std::cout << Mheader "Set WorldShmCommBufs["<<r<<"]="<<ptr<< "("<< bytes<< "bytes)"<<std::endl;
+    //    std::cout << header "Set WorldShmCommBufs["<<r<<"]="<<ptr<< "("<< bytes<< "bytes)"<<std::endl;
   }
-  std::cout<< Mheader " Intra-node IPC setup is complete "<<std::endl;
   _ShmAlloc=1;
   _ShmAllocBytes  = bytes;
 };
@@ -756,9 +698,9 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 #ifdef GRID_MPI3_SHM_NONE
 void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 {
-  std::cout << Mheader "SharedMemoryAllocate "<< bytes<< " MMAP anonymous implementation "<<std::endl;
+  std::cout << header "SharedMemoryAllocate "<< bytes<< " MMAP anonymous implementation "<<std::endl;
-  GRID_ASSERT(_ShmSetup==1);
+  assert(_ShmSetup==1);
-  GRID_ASSERT(_ShmAlloc==0);
+  assert(_ShmAlloc==0);
   //////////////////////////////////////////////////////////////////////////////////////////////////////////
   // allocate the shared windows for our group
   //////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -769,7 +711,7 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
   // Hugetlbf and others map filesystems as mappable huge pages
   ////////////////////////////////////////////////////////////////////////////////////////////
   char shm_name [NAME_MAX];
-  GRID_ASSERT(WorldShmSize == 1);
+  assert(WorldShmSize == 1);
   for(int r=0;r<WorldShmSize;r++){
     
     int fd=-1;
@@ -783,9 +725,9 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
     void *ptr = (void *) mmap(NULL, bytes, PROT_READ | PROT_WRITE, mmap_flag,fd, 0); 
     if ( ptr == (void *)MAP_FAILED ) {    
       printf("mmap %s failed\n",shm_name);
-      perror("failed mmap");      GRID_ASSERT(0);    
+      perror("failed mmap");      assert(0);    
     }
-    GRID_ASSERT(((uint64_t)ptr&0x3F)==0);
+    assert(((uint64_t)ptr&0x3F)==0);
     close(fd);
     WorldShmCommBufs[r] =ptr;
     //    std::cout << "Set WorldShmCommBufs["<<r<<"]="<<ptr<< "("<< bytes<< "bytes)"<<std::endl;
@@ -803,9 +745,9 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 ////////////////////////////////////////////////////////////////////////////////////////////
 void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 { 
-  std::cout << Mheader "SharedMemoryAllocate "<< bytes<< " SHMOPEN implementation "<<std::endl;
+  std::cout << header "SharedMemoryAllocate "<< bytes<< " SHMOPEN implementation "<<std::endl;
-  GRID_ASSERT(_ShmSetup==1);
+  assert(_ShmSetup==1);
-  GRID_ASSERT(_ShmAlloc==0); 
+  assert(_ShmAlloc==0); 
   MPI_Barrier(WorldShmComm);
   WorldShmCommBufs.resize(WorldShmSize);
 
@@ -836,7 +778,7 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 	perror("failed mmap");     
 	assert(0);    
       }
-      GRID_ASSERT(((uint64_t)ptr&0x3F)==0);
+      assert(((uint64_t)ptr&0x3F)==0);
       
       WorldShmCommBufs[r] =ptr;
       close(fd);
@@ -857,8 +799,8 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
       if ( fd<0 ) {	perror("failed shm_open");	assert(0);      }
       
       void * ptr =  mmap(NULL,size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-      if ( ptr == MAP_FAILED ) {       perror("failed mmap");      GRID_ASSERT(0);    }
+      if ( ptr == MAP_FAILED ) {       perror("failed mmap");      assert(0);    }
-      GRID_ASSERT(((uint64_t)ptr&0x3F)==0);
+      assert(((uint64_t)ptr&0x3F)==0);
       WorldShmCommBufs[r] =ptr;
 
       close(fd);
@@ -881,14 +823,14 @@ void GlobalSharedMemory::SharedMemoryZero(void *dest,size_t bytes)
   bzero(dest,bytes);
 #endif
 }
-//void GlobalSharedMemory::SharedMemoryCopy(void *dest,void *src,size_t bytes)
+void GlobalSharedMemory::SharedMemoryCopy(void *dest,void *src,size_t bytes)
-//{
+{
-//#if defined(GRID_CUDA) || defined(GRID_HIP) || defined(GRID_SYCL)
+#if defined(GRID_CUDA) || defined(GRID_HIP) || defined(GRID_SYCL)
-//  acceleratorCopyToDevice(src,dest,bytes);
+  acceleratorCopyToDevice(src,dest,bytes);
-//#else   
+#else   
-//  bcopy(src,dest,bytes);
+  bcopy(src,dest,bytes);
-//#endif
+#endif
-//}
+}
 ////////////////////////////////////////////////////////
 // Global shared functionality finished
 // Now move to per communicator functionality
@@ -915,7 +857,7 @@ void SharedMemory::SetCommunicator(Grid_MPI_Comm comm)
   //////////////////////////////////////////////////////////////////////
   // Map ShmRank to WorldShmRank and use the right buffer
   //////////////////////////////////////////////////////////////////////
-  GRID_ASSERT (GlobalSharedMemory::ShmAlloc()==1);
+  assert (GlobalSharedMemory::ShmAlloc()==1);
   heap_size = GlobalSharedMemory::ShmAllocBytes();
   for(int r=0;r<ShmSize;r++){
 
@@ -924,16 +866,9 @@ void SharedMemory::SetCommunicator(Grid_MPI_Comm comm)
     MPI_Allreduce(MPI_IN_PLACE,&wsr,1,MPI_UINT32_T,MPI_SUM,ShmComm);
 
     ShmCommBufs[r] = GlobalSharedMemory::WorldShmCommBufs[wsr];
-    //    std::cerr << " SetCommunicator rank "<<r<<" comm "<<ShmCommBufs[r] <<std::endl;
   }
   ShmBufferFreeAll();
 
-#ifndef ACCELERATOR_AWARE_MPI
-  host_heap_size = heap_size;
-  HostCommBuf= GlobalSharedMemory::HostCommBuf;
-  HostBufferFreeAll();
-#endif  
-
   /////////////////////////////////////////////////////////////////////
   // find comm ranks in our SHM group (i.e. which ranks are on our node)
   /////////////////////////////////////////////////////////////////////
@@ -955,7 +890,7 @@ void SharedMemory::SetCommunicator(Grid_MPI_Comm comm)
   }
 #endif
 
-  //  SharedMemoryTest();
+  //SharedMemoryTest();
 }
 //////////////////////////////////////////////////////////////////
 // On node barrier
@@ -977,18 +912,19 @@ void SharedMemory::SharedMemoryTest(void)
        check[0]=GlobalSharedMemory::WorldNode;
        check[1]=r;
        check[2]=magic;
-       acceleratorCopyToDevice(check,ShmCommBufs[r],3*sizeof(uint64_t));
+       GlobalSharedMemory::SharedMemoryCopy( ShmCommBufs[r], check, 3*sizeof(uint64_t));
     }
   }
   ShmBarrier();
   for(uint64_t r=0;r<ShmSize;r++){
-    acceleratorCopyFromDevice(ShmCommBufs[r],check,3*sizeof(uint64_t));
+    ShmBarrier();
-    GRID_ASSERT(check[0]==GlobalSharedMemory::WorldNode);
+    GlobalSharedMemory::SharedMemoryCopy(check,ShmCommBufs[r], 3*sizeof(uint64_t));
-    GRID_ASSERT(check[1]==r);
+    ShmBarrier();
-    GRID_ASSERT(check[2]==magic);
+    assert(check[0]==GlobalSharedMemory::WorldNode);
+    assert(check[1]==r);
+    assert(check[2]==magic);
+    ShmBarrier();
   }
-  ShmBarrier();
-  std::cout << GridLogDebug << " SharedMemoryTest has passed "<<std::endl;
 }
 
 void *SharedMemory::ShmBuffer(int rank)
@@ -1003,14 +939,12 @@ void *SharedMemory::ShmBuffer(int rank)
 void *SharedMemory::ShmBufferTranslate(int rank,void * local_p)
 {
   int gpeer = ShmRanks[rank];
-  GRID_ASSERT(gpeer!=ShmRank); // never send to self
+  assert(gpeer!=ShmRank); // never send to self
-  //  std::cout << "ShmBufferTranslate for rank " << rank<<" peer "<<gpeer<<std::endl;
   if (gpeer == MPI_UNDEFINED){
     return NULL;
   } else { 
     uint64_t offset = (uint64_t)local_p - (uint64_t)ShmCommBufs[ShmRank];
     uint64_t remote = (uint64_t)ShmCommBufs[gpeer]+offset;
-    //    std::cout << "ShmBufferTranslate : local,offset,remote "<<std::hex<<local_p<<" "<<offset<<" "<<remote<<std::dec<<std::endl;
     return (void *) remote;
   }
 }

Grid/communicator/SharedMemoryNone.cc

@@ -34,7 +34,7 @@ NAMESPACE_BEGIN(Grid);
 /*Construct from an MPI communicator*/
 void GlobalSharedMemory::Init(Grid_MPI_Comm comm)
 {
-  GRID_ASSERT(_ShmSetup==0);
+  assert(_ShmSetup==0);
   WorldComm = 0;
   WorldRank = 0;
   WorldSize = 1;
@@ -48,10 +48,9 @@ void GlobalSharedMemory::Init(Grid_MPI_Comm comm)
   _ShmSetup=1;
 }
 
-void GlobalSharedMemory::OptimalCommunicator(const Coordinate &processors,Grid_MPI_Comm & optimal_comm,Coordinate &SHM)
+void GlobalSharedMemory::OptimalCommunicator(const Coordinate &processors,Grid_MPI_Comm & optimal_comm)
 {
   optimal_comm = WorldComm;
-  SHM = Coordinate(processors.size(),1);
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////
@@ -62,8 +61,8 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 {
   std::cout << header "SharedMemoryAllocate "<< bytes<< " GPU implementation "<<std::endl;
   void * ShmCommBuf ; 
-  GRID_ASSERT(_ShmSetup==1);
+  assert(_ShmSetup==1);
-  GRID_ASSERT(_ShmAlloc==0);
+  assert(_ShmAlloc==0);
 
   ///////////////////////////////////////////////////////////////////////////////////////////////////////////
   // Each MPI rank should allocate our own buffer
@@ -92,8 +91,8 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
 {
   void * ShmCommBuf ; 
-  GRID_ASSERT(_ShmSetup==1);
+  assert(_ShmSetup==1);
-  GRID_ASSERT(_ShmAlloc==0);
+  assert(_ShmAlloc==0);
   int mmap_flag =0;
 #ifdef MAP_ANONYMOUS
   mmap_flag = mmap_flag| MAP_SHARED | MAP_ANONYMOUS;
@@ -122,17 +121,17 @@ void GlobalSharedMemory::SharedMemoryZero(void *dest,size_t bytes)
 {
   acceleratorMemSet(dest,0,bytes);
 }
-//void GlobalSharedMemory::SharedMemoryCopy(void *dest,void *src,size_t bytes)
+void GlobalSharedMemory::SharedMemoryCopy(void *dest,void *src,size_t bytes)
-//{
+{
-//  acceleratorCopyToDevice(src,dest,bytes);
+  acceleratorCopyToDevice(src,dest,bytes);
-//}
+}
 ////////////////////////////////////////////////////////
 // Global shared functionality finished
 // Now move to per communicator functionality
 ////////////////////////////////////////////////////////
 void SharedMemory::SetCommunicator(Grid_MPI_Comm comm)
 {
-  GRID_ASSERT(GlobalSharedMemory::ShmAlloc()==1);
+  assert(GlobalSharedMemory::ShmAlloc()==1);
   ShmRanks.resize(1);
   ShmCommBufs.resize(1);
   ShmRanks[0] = 0;

Grid/cshift/Cshift.h

@@ -51,6 +51,7 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #endif 
 
 NAMESPACE_BEGIN(Grid);
+
 template<class Expression,typename std::enable_if<is_lattice_expr<Expression>::value,void>::type * = nullptr> 
 auto Cshift(const Expression &expr,int dim,int shift)  -> decltype(closure(expr)) 
 {

Grid/cshift/Cshift_common.h

@@ -29,28 +29,13 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 
 NAMESPACE_BEGIN(Grid);
 
-extern std::vector<std::pair<int,int> > Cshift_table; 
+extern Vector<std::pair<int,int> > Cshift_table; 
-extern deviceVector<std::pair<int,int> > Cshift_table_device; 
 
-inline std::pair<int,int> *MapCshiftTable(void)
-{
-  // GPU version
-  uint64_t sz=Cshift_table.size();
-  if (Cshift_table_device.size()!=sz )    {
-    Cshift_table_device.resize(sz);
-  }
-  acceleratorCopyToDevice((void *)&Cshift_table[0],
-			  (void *)&Cshift_table_device[0],
-			  sizeof(Cshift_table[0])*sz);
-
-  return &Cshift_table_device[0];
-  // CPU version use identify map
-}
 ///////////////////////////////////////////////////////////////////
 // Gather for when there is no need to SIMD split 
 ///////////////////////////////////////////////////////////////////
 template<class vobj> void 
-Gather_plane_simple (const Lattice<vobj> &rhs,deviceVector<vobj> &buffer,int dimension,int plane,int cbmask, int off=0)
+Gather_plane_simple (const Lattice<vobj> &rhs,cshiftVector<vobj> &buffer,int dimension,int plane,int cbmask, int off=0)
 {
   int rd = rhs.Grid()->_rdimensions[dimension];
 
@@ -89,11 +74,18 @@ Gather_plane_simple (const Lattice<vobj> &rhs,deviceVector<vobj> &buffer,int dim
   }
   {
     auto buffer_p = & buffer[0];
-    auto table = MapCshiftTable();
+    auto table = &Cshift_table[0];
+#ifdef ACCELERATOR_CSHIFT    
     autoView(rhs_v , rhs, AcceleratorRead);
     accelerator_for(i,ent,vobj::Nsimd(),{
 	coalescedWrite(buffer_p[table[i].first],coalescedRead(rhs_v[table[i].second]));
     });
+#else
+    autoView(rhs_v , rhs, CpuRead);
+    thread_for(i,ent,{
+      buffer_p[table[i].first]=rhs_v[table[i].second];
+    });
+#endif
   }
 }
 
@@ -118,6 +110,7 @@ Gather_plane_extract(const Lattice<vobj> &rhs,
   int n1=rhs.Grid()->_slice_stride[dimension];
 
   if ( cbmask ==0x3){
+#ifdef ACCELERATOR_CSHIFT
     autoView(rhs_v , rhs, AcceleratorRead);
     accelerator_for(nn,e1*e2,1,{
 	int n = nn%e1;
@@ -128,10 +121,21 @@ Gather_plane_extract(const Lattice<vobj> &rhs,
 	vobj temp =rhs_v[so+o+b];
 	extract<vobj>(temp,pointers,offset);
       });
+#else
+    autoView(rhs_v , rhs, CpuRead);
+    thread_for2d(n,e1,b,e2,{
+	int o      =   n*n1;
+	int offset = b+n*e2;
+	
+	vobj temp =rhs_v[so+o+b];
+	extract<vobj>(temp,pointers,offset);
+      });
+#endif
   } else { 
     Coordinate rdim=rhs.Grid()->_rdimensions;
     Coordinate cdm =rhs.Grid()->_checker_dim_mask;
     std::cout << " Dense packed buffer WARNING " <<std::endl; // Does this get called twice once for each cb?
+#ifdef ACCELERATOR_CSHIFT    
     autoView(rhs_v , rhs, AcceleratorRead);
     accelerator_for(nn,e1*e2,1,{
 	int n = nn%e1;
@@ -152,13 +156,33 @@ Gather_plane_extract(const Lattice<vobj> &rhs,
 	  extract<vobj>(temp,pointers,offset);
 	}
       });
+#else
+    autoView(rhs_v , rhs, CpuRead);
+    thread_for2d(n,e1,b,e2,{
+
+	Coordinate coor;
+
+	int o=n*n1;
+	int oindex = o+b;
+
+       	int cb = RedBlackCheckerBoardFromOindex(oindex, rdim, cdm);
+
+	int ocb=1<<cb;
+	int offset = b+n*e2;
+
+	if ( ocb & cbmask ) {
+	  vobj temp =rhs_v[so+o+b];
+	  extract<vobj>(temp,pointers,offset);
+	}
+      });
+#endif
   }
 }
 
 //////////////////////////////////////////////////////
 // Scatter for when there is no need to SIMD split
 //////////////////////////////////////////////////////
-template<class vobj> void Scatter_plane_simple (Lattice<vobj> &rhs,deviceVector<vobj> &buffer, int dimension,int plane,int cbmask)
+template<class vobj> void Scatter_plane_simple (Lattice<vobj> &rhs,cshiftVector<vobj> &buffer, int dimension,int plane,int cbmask)
 {
   int rd = rhs.Grid()->_rdimensions[dimension];
 
@@ -201,11 +225,18 @@ template<class vobj> void Scatter_plane_simple (Lattice<vobj> &rhs,deviceVector<
   
   {
     auto buffer_p = & buffer[0];
-    auto table = MapCshiftTable();
+    auto table = &Cshift_table[0];
-    autoView( rhs_v, rhs, AcceleratorWriteDiscard);
+#ifdef ACCELERATOR_CSHIFT    
+    autoView( rhs_v, rhs, AcceleratorWrite);
     accelerator_for(i,ent,vobj::Nsimd(),{
 	coalescedWrite(rhs_v[table[i].first],coalescedRead(buffer_p[table[i].second]));
     });
+#else
+    autoView( rhs_v, rhs, CpuWrite);
+    thread_for(i,ent,{
+      rhs_v[table[i].first]=buffer_p[table[i].second];
+    });
+#endif
   }
 }
 
@@ -228,7 +259,8 @@ template<class vobj> void Scatter_plane_merge(Lattice<vobj> &rhs,ExtractPointerA
   if(cbmask ==0x3 ) {
     int _slice_stride = rhs.Grid()->_slice_stride[dimension];
     int _slice_block = rhs.Grid()->_slice_block[dimension];
-    autoView( rhs_v , rhs, AcceleratorWriteDiscard);
+#ifdef ACCELERATOR_CSHIFT    
+    autoView( rhs_v , rhs, AcceleratorWrite);
     accelerator_for(nn,e1*e2,1,{
 	int n = nn%e1;
 	int b = nn/e1;
@@ -236,13 +268,21 @@ template<class vobj> void Scatter_plane_merge(Lattice<vobj> &rhs,ExtractPointerA
 	int offset = b+n*_slice_block;
 	merge(rhs_v[so+o+b],pointers,offset);
       });
+#else
+    autoView( rhs_v , rhs, CpuWrite);
+    thread_for2d(n,e1,b,e2,{
+	int o      = n*_slice_stride;
+	int offset = b+n*_slice_block;
+	merge(rhs_v[so+o+b],pointers,offset);
+    });
+#endif
   } else { 
 
     // Case of SIMD split AND checker dim cannot currently be hit, except in 
     // Test_cshift_red_black code.
-    std::cout << "Scatter_plane merge GRID_ASSERT(0); think this is buggy FIXME "<< std::endl;// think this is buggy FIXME
+    std::cout << "Scatter_plane merge assert(0); think this is buggy FIXME "<< std::endl;// think this is buggy FIXME
     std::cout<<" Unthreaded warning -- buffer is not densely packed ??"<<std::endl;
-    GRID_ASSERT(0); // This will fail if hit on GPU
+    assert(0); // This will fail if hit on GPU
     autoView( rhs_v, rhs, CpuWrite);
     for(int n=0;n<e1;n++){
       for(int b=0;b<e2;b++){
@@ -300,12 +340,20 @@ template<class vobj> void Copy_plane(Lattice<vobj>& lhs,const Lattice<vobj> &rhs
   }
 
   {
-    auto table = MapCshiftTable();
+    auto table = &Cshift_table[0];
+#ifdef ACCELERATOR_CSHIFT    
     autoView(rhs_v , rhs, AcceleratorRead);
-    autoView(lhs_v , lhs, AcceleratorWriteDiscard);
+    autoView(lhs_v , lhs, AcceleratorWrite);
     accelerator_for(i,ent,vobj::Nsimd(),{
       coalescedWrite(lhs_v[table[i].first],coalescedRead(rhs_v[table[i].second]));
     });
+#else
+    autoView(rhs_v , rhs, CpuRead);
+    autoView(lhs_v , lhs, CpuWrite);
+    thread_for(i,ent,{
+      lhs_v[table[i].first]=rhs_v[table[i].second];
+    });
+#endif
   }
 }
 
@@ -344,12 +392,20 @@ template<class vobj> void Copy_plane_permute(Lattice<vobj>& lhs,const Lattice<vo
   }
 
   {
-    auto table = MapCshiftTable();
+    auto table = &Cshift_table[0];
+#ifdef ACCELERATOR_CSHIFT    
     autoView( rhs_v, rhs, AcceleratorRead);
     autoView( lhs_v, lhs, AcceleratorWrite);
     accelerator_for(i,ent,1,{
       permute(lhs_v[table[i].first],rhs_v[table[i].second],permute_type);
     });
+#else
+    autoView( rhs_v, rhs, CpuRead);
+    autoView( lhs_v, lhs, CpuWrite);
+    thread_for(i,ent,{
+      permute(lhs_v[table[i].first],rhs_v[table[i].second],permute_type);
+    });
+#endif
   }
 }
 

Grid/cshift/Cshift_mpi.h

@@ -29,13 +29,9 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
 #ifndef _GRID_CSHIFT_MPI_H_
 #define _GRID_CSHIFT_MPI_H_
 
+
 NAMESPACE_BEGIN(Grid); 
 
-#ifdef GRID_CHECKSUM_COMMS
-extern uint64_t checksum_index;
-#endif
-
-const int Cshift_verbose=0;
 template<class vobj> Lattice<vobj> Cshift(const Lattice<vobj> &rhs,int dimension,int shift)
 {
   typedef typename vobj::vector_type vector_type;
@@ -49,20 +45,6 @@ template<class vobj> Lattice<vobj> Cshift(const Lattice<vobj> &rhs,int dimension
   // Map to always positive shift modulo global full dimension.
   shift = (shift+fd)%fd;
 
-  if( shift ==0 ) {
-    ret = rhs;
-    return ret;
-  }
-  //
-  // Potential easy fast cases:
-  // Shift is a multiple of the local lattice extent.
-  // Then need only to shift whole subvolumes
-  int L = rhs.Grid()->_ldimensions[dimension];
-  if ( (shift%L )==0 && !rhs.Grid()->CheckerBoarded(dimension) ) {
-    Cshift_simple(ret,rhs,dimension,shift);
-    return ret;
-  }
-  
   ret.Checkerboard() = rhs.Grid()->CheckerBoardDestination(rhs.Checkerboard(),shift,dimension);
         
   // the permute type
@@ -70,72 +52,20 @@ template<class vobj> Lattice<vobj> Cshift(const Lattice<vobj> &rhs,int dimension
   int comm_dim        = rhs.Grid()->_processors[dimension] >1 ;
   int splice_dim      = rhs.Grid()->_simd_layout[dimension]>1 && (comm_dim);
 
-  RealD t1,t0;
+
-  t0=usecond();
   if ( !comm_dim ) {
-    //    std::cout << "CSHIFT: Cshift_local" <<std::endl;
+    //std::cout << "CSHIFT: Cshift_local" <<std::endl;
     Cshift_local(ret,rhs,dimension,shift); // Handles checkerboarding
   } else if ( splice_dim ) {
-    //    std::cout << "CSHIFT: Cshift_comms_simd call - splice_dim = " << splice_dim << " shift " << shift << " dimension = " << dimension << std::endl;
+    //std::cout << "CSHIFT: Cshift_comms_simd call - splice_dim = " << splice_dim << " shift " << shift << " dimension = " << dimension << std::endl;
     Cshift_comms_simd(ret,rhs,dimension,shift);
   } else {
-    //    std::cout << "CSHIFT: Cshift_comms" <<std::endl;
+    //std::cout << "CSHIFT: Cshift_comms" <<std::endl;
     Cshift_comms(ret,rhs,dimension,shift);
   }
-  t1=usecond();
-  if(Cshift_verbose) std::cout << GridLogPerformance << "Cshift took "<< (t1-t0)/1e3 << " ms"<<std::endl;
   return ret;
 }
 
-template<class vobj> void Cshift_simple(Lattice<vobj>& ret,const Lattice<vobj> &rhs,int dimension,int shift)
-{
-  GridBase *grid=rhs.Grid();
-  int comm_proc, xmit_to_rank, recv_from_rank;
-  
-  int fd              = rhs.Grid()->_fdimensions[dimension];
-  int rd              = rhs.Grid()->_rdimensions[dimension];
-  int ld              = rhs.Grid()->_ldimensions[dimension];
-  int pd              = rhs.Grid()->_processors[dimension];
-  int simd_layout     = rhs.Grid()->_simd_layout[dimension];
-  int comm_dim        = rhs.Grid()->_processors[dimension] >1 ;
-
-  comm_proc = ((shift)/ld)%pd;
-
-  grid->ShiftedRanks(dimension,comm_proc,xmit_to_rank,recv_from_rank);
-  if(comm_dim) {
-
-    int64_t bytes = sizeof(vobj) * grid->oSites();
-
-    autoView(rhs_v , rhs, AcceleratorRead);
-    autoView(ret_v , ret, AcceleratorWrite);
-    void *send_buf  = (void *)&rhs_v[0];
-    void *recv_buf  = (void *)&ret_v[0];
-
-#ifdef ACCELERATOR_AWARE_MPI
-    grid->SendToRecvFrom(send_buf,
-			 xmit_to_rank,
-			 recv_buf,
-			 recv_from_rank,
-			 bytes);
-#else
-    static hostVector<vobj> hrhs; hrhs.resize(grid->oSites());
-    static hostVector<vobj> hret; hret.resize(grid->oSites());
-
-    void *hsend_buf = (void *)&hrhs[0];
-    void *hrecv_buf = (void *)&hret[0];
-
-    acceleratorCopyFromDevice(&send_buf[0],&hsend_buf[0],bytes);
-
-    grid->SendToRecvFrom(hsend_buf,
-			 xmit_to_rank,
-			 hrecv_buf,
-			 recv_from_rank,
-			 bytes);
-
-    acceleratorCopyToDevice(&hrecv_buf[0],&recv_buf[0],bytes);
-#endif
-  }
-}
 template<class vobj> void Cshift_comms(Lattice<vobj>& ret,const Lattice<vobj> &rhs,int dimension,int shift)
 {
   int sshift[2];
@@ -161,16 +91,18 @@ template<class vobj> void Cshift_comms_simd(Lattice<vobj>& ret,const Lattice<vob
   sshift[0] = rhs.Grid()->CheckerBoardShiftForCB(rhs.Checkerboard(),dimension,shift,Even);
   sshift[1] = rhs.Grid()->CheckerBoardShiftForCB(rhs.Checkerboard(),dimension,shift,Odd);
 
-  //  std::cout << "Cshift_comms_simd dim "<<dimension<<"cb "<<rhs.Checkerboard()<<"shift "<<shift<<" sshift " << sshift[0]<<" "<<sshift[1]<<std::endl;
+  //std::cout << "Cshift_comms_simd dim "<<dimension<<"cb "<<rhs.checkerboard<<"shift "<<shift<<" sshift " << sshift[0]<<" "<<sshift[1]<<std::endl;
   if ( sshift[0] == sshift[1] ) {
-    //    std::cout << "Single pass Cshift_comms" <<std::endl;
+    //std::cout << "Single pass Cshift_comms" <<std::endl;
     Cshift_comms_simd(ret,rhs,dimension,shift,0x3);
   } else {
-    //    std::cout << "Two pass Cshift_comms" <<std::endl;
+    //std::cout << "Two pass Cshift_comms" <<std::endl;
     Cshift_comms_simd(ret,rhs,dimension,shift,0x1);// if checkerboard is unfavourable take two passes
     Cshift_comms_simd(ret,rhs,dimension,shift,0x2);// both with block stride loop iteration
   }
 }
+#define ACCELERATOR_CSHIFT_NO_COPY
+#ifdef ACCELERATOR_CSHIFT_NO_COPY
 template<class vobj> void Cshift_comms(Lattice<vobj> &ret,const Lattice<vobj> &rhs,int dimension,int shift,int cbmask)
 {
   typedef typename vobj::vector_type vector_type;
@@ -184,38 +116,27 @@ template<class vobj> void Cshift_comms(Lattice<vobj> &ret,const Lattice<vobj> &r
   int pd              = rhs.Grid()->_processors[dimension];
   int simd_layout     = rhs.Grid()->_simd_layout[dimension];
   int comm_dim        = rhs.Grid()->_processors[dimension] >1 ;
-  GRID_ASSERT(simd_layout==1);
+  assert(simd_layout==1);
-  GRID_ASSERT(comm_dim==1);
+  assert(comm_dim==1);
-  GRID_ASSERT(shift>=0);
+  assert(shift>=0);
-  GRID_ASSERT(shift<fd);
+  assert(shift<fd);
   
   int buffer_size = rhs.Grid()->_slice_nblock[dimension]*rhs.Grid()->_slice_block[dimension];
-  static deviceVector<vobj> send_buf; send_buf.resize(buffer_size);
+  static cshiftVector<vobj> send_buf; send_buf.resize(buffer_size);
-  static deviceVector<vobj> recv_buf; recv_buf.resize(buffer_size);
+  static cshiftVector<vobj> recv_buf; recv_buf.resize(buffer_size);
-#ifndef ACCELERATOR_AWARE_MPI
-  int pad = (8 + sizeof(vobj) - 1) / sizeof(vobj);
-  static hostVector<vobj> hsend_buf; hsend_buf.resize(buffer_size+pad);
-  static hostVector<vobj> hrecv_buf; hrecv_buf.resize(buffer_size+pad);
-#endif
     
   int cb= (cbmask==0x2)? Odd : Even;
   int sshift= rhs.Grid()->CheckerBoardShiftForCB(rhs.Checkerboard(),dimension,shift,cb);
-  RealD tcopy=0.0;
+
-  RealD tgather=0.0;
-  RealD tscatter=0.0;
-  RealD tcomms=0.0;
-  uint64_t xbytes=0;
   for(int x=0;x<rd;x++){       
 
     int sx        =  (x+sshift)%rd;
     int comm_proc = ((x+sshift)/rd)%pd;
     
     if (comm_proc==0) {
-      FlightRecorder::StepLog("Cshift_Copy_plane");
+
-      tcopy-=usecond();
       Copy_plane(ret,rhs,dimension,x,sx,cbmask); 
-      tcopy+=usecond();
+
-      FlightRecorder::StepLog("Cshift_Copy_plane_complete");
     } else {
 
       int words = buffer_size;
@@ -223,84 +144,26 @@ template<class vobj> void Cshift_comms(Lattice<vobj> &ret,const Lattice<vobj> &r
 
       int bytes = words * sizeof(vobj);
 
-      FlightRecorder::StepLog("Cshift_Gather_plane");
-      tgather-=usecond();
       Gather_plane_simple (rhs,send_buf,dimension,sx,cbmask);
-      tgather+=usecond();
-      FlightRecorder::StepLog("Cshift_Gather_plane_complete");
 
       //      int rank           = grid->_processor;
       int recv_from_rank;
       int xmit_to_rank;
-
       grid->ShiftedRanks(dimension,comm_proc,xmit_to_rank,recv_from_rank);
 
-      tcomms-=usecond();
       grid->Barrier();
 
-      FlightRecorder::StepLog("Cshift_SendRecv");
-#ifdef ACCELERATOR_AWARE_MPI
       grid->SendToRecvFrom((void *)&send_buf[0],
 			   xmit_to_rank,
 			   (void *)&recv_buf[0],
 			   recv_from_rank,
 			   bytes);
-#else
-      // bouncy bouncy
-      acceleratorCopyFromDevice(&send_buf[0],&hsend_buf[0],bytes);
 
-#ifdef GRID_CHECKSUM_COMMS
-      GRID_ASSERT(bytes % 8 == 0);
-      checksum_index++;
-      uint64_t xsum = checksum_gpu((uint64_t*)&send_buf[0], bytes / 8) ^ (1 + checksum_index);
-      *(uint64_t*)(((char*)&hsend_buf[0]) + bytes) = xsum;
-      bytes += 8;
-#endif
-
-      grid->SendToRecvFrom((void *)&hsend_buf[0],
-			   xmit_to_rank,
-			   (void *)&hrecv_buf[0],
-			   recv_from_rank,
-			   bytes);
-
-#ifdef GRID_CHECKSUM_COMMS
-      bytes -= 8;
-      acceleratorCopyToDevice(&hrecv_buf[0],&recv_buf[0],bytes);
-      uint64_t expected_cs = *(uint64_t*)(((char*)&hrecv_buf[0]) + bytes);
-      uint64_t computed_cs = checksum_gpu((uint64_t*)&recv_buf[0], bytes / 8) ^ (1 + checksum_index);
-      std::cout << GridLogComms<< " Cshift: "
-		<<" dim"<<dimension
-		<<" shift "<<shift
-		<< " rank "<< grid->ThisRank()
-		<<" Coor "<<grid->ThisProcessorCoor()
-		<<" send "<<xsum<<" to   "<<xmit_to_rank
-		<<" recv "<<computed_cs<<" from "<<recv_from_rank
-		<<std::endl;
-      GRID_ASSERT(expected_cs == computed_cs);
-#else
-      acceleratorCopyToDevice(&hrecv_buf[0],&recv_buf[0],bytes);
-#endif
-
-#endif
-      FlightRecorder::StepLog("Cshift_SendRecv_complete");
-
-      xbytes+=bytes;
       grid->Barrier();
-      tcomms+=usecond();
-      FlightRecorder::StepLog("Cshift_barrier_complete");
 
-      tscatter-=usecond();
       Scatter_plane_simple (ret,recv_buf,dimension,x,cbmask);
-      tscatter+=usecond();
     }
   }
-  if (Cshift_verbose){
-    std::cout << GridLogPerformance << " Cshift copy    "<<tcopy/1e3<<" ms"<<std::endl;
-    std::cout << GridLogPerformance << " Cshift gather  "<<tgather/1e3<<" ms"<<std::endl;
-    std::cout << GridLogPerformance << " Cshift scatter "<<tscatter/1e3<<" ms"<<std::endl;
-    std::cout << GridLogPerformance << " Cshift comm    "<<tcomms/1e3<<" ms"<<std::endl;
-    std::cout << GridLogPerformance << " Cshift BW      "<<(2.0*xbytes)/tcomms<<" MB/s "<<2*xbytes<< " Bytes "<<std::endl;
-  }
 }
 
 template<class vobj> void  Cshift_comms_simd(Lattice<vobj> &ret,const Lattice<vobj> &rhs,int dimension,int shift,int cbmask)
@@ -318,20 +181,14 @@ template<class vobj> void  Cshift_comms_simd(Lattice<vobj> &ret,const Lattice<vo
   int simd_layout     = grid->_simd_layout[dimension];
   int comm_dim        = grid->_processors[dimension] >1 ;
 
-  //  std::cout << "Cshift_comms_simd dim "<< dimension << " fd "<<fd<<" rd "<<rd
+  //std::cout << "Cshift_comms_simd dim "<< dimension << " fd "<<fd<<" rd "<<rd
-  //	    << " ld "<<ld<<" pd " << pd<<" simd_layout "<<simd_layout 
+  //    << " ld "<<ld<<" pd " << pd<<" simd_layout "<<simd_layout 
-  //	    << " comm_dim " << comm_dim << " cbmask " << cbmask <<std::endl;
+  //    << " comm_dim " << comm_dim << " cbmask " << cbmask <<std::endl;
 
-  GRID_ASSERT(comm_dim==1);
+  assert(comm_dim==1);
-  GRID_ASSERT(simd_layout==2);
+  assert(simd_layout==2);
-  GRID_ASSERT(shift>=0);
+  assert(shift>=0);
-  GRID_ASSERT(shift<fd);
+  assert(shift<fd);
-
-  RealD tcopy=0.0;
-  RealD tgather=0.0;
-  RealD tscatter=0.0;
-  RealD tcomms=0.0;
-  uint64_t xbytes=0;
 
   int permute_type=grid->PermuteType(dimension);
 
@@ -341,8 +198,8 @@ template<class vobj> void  Cshift_comms_simd(Lattice<vobj> &ret,const Lattice<vo
   int buffer_size = grid->_slice_nblock[dimension]*grid->_slice_block[dimension];
   //  int words = sizeof(vobj)/sizeof(vector_type);
 
-  static std::vector<deviceVector<scalar_object> >  send_buf_extract; send_buf_extract.resize(Nsimd);
+  static std::vector<cshiftVector<scalar_object> >  send_buf_extract; send_buf_extract.resize(Nsimd);
-  static std::vector<deviceVector<scalar_object> >  recv_buf_extract; recv_buf_extract.resize(Nsimd);
+  static std::vector<cshiftVector<scalar_object> >  recv_buf_extract; recv_buf_extract.resize(Nsimd);
   scalar_object *  recv_buf_extract_mpi;
   scalar_object *  send_buf_extract_mpi;
  
@@ -350,18 +207,6 @@ template<class vobj> void  Cshift_comms_simd(Lattice<vobj> &ret,const Lattice<vo
     send_buf_extract[s].resize(buffer_size);
     recv_buf_extract[s].resize(buffer_size);
   }
-#ifndef ACCELERATOR_AWARE_MPI
-#ifdef GRID_CHECKSUM_COMMS
-  buffer_size += (8 + sizeof(vobj) - 1) / sizeof(vobj);
-#endif
-
-  static hostVector<vobj> hsend_buf; hsend_buf.resize(buffer_size);
-  static hostVector<vobj> hrecv_buf; hrecv_buf.resize(buffer_size);
-
-#ifdef GRID_CHECKSUM_COMMS
-  buffer_size -= (8 + sizeof(vobj) - 1) / sizeof(vobj);
-#endif
-#endif
 
   int bytes = buffer_size*sizeof(scalar_object);
 
@@ -382,9 +227,7 @@ template<class vobj> void  Cshift_comms_simd(Lattice<vobj> &ret,const Lattice<vo
       pointers[i] = &send_buf_extract[i][0];
     }
     int sx   = (x+sshift)%rd;
-    tgather-=usecond();
     Gather_plane_extract(rhs,pointers,dimension,sx,cbmask);
-    tgather+=usecond();
 
     for(int i=0;i<Nsimd;i++){
       
@@ -404,61 +247,22 @@ template<class vobj> void  Cshift_comms_simd(Lattice<vobj> &ret,const Lattice<vo
 
       if (nbr_ic) nbr_lane|=inner_bit;
 
-      GRID_ASSERT (sx == nbr_ox);
+      assert (sx == nbr_ox);
 
       if(nbr_proc){
 	grid->ShiftedRanks(dimension,nbr_proc,xmit_to_rank,recv_from_rank); 
 
-	tcomms-=usecond();
 	grid->Barrier();
 
 	send_buf_extract_mpi = &send_buf_extract[nbr_lane][0];
 	recv_buf_extract_mpi = &recv_buf_extract[i][0];
-#ifdef ACCELERATOR_AWARE_MPI
 	grid->SendToRecvFrom((void *)send_buf_extract_mpi,
 			     xmit_to_rank,
 			     (void *)recv_buf_extract_mpi,
 			     recv_from_rank,
 			     bytes);
-#else
-      // bouncy bouncy
-	acceleratorCopyFromDevice((void *)send_buf_extract_mpi,(void *)&hsend_buf[0],bytes);
-#ifdef GRID_CHECKSUM_COMMS
-	assert(bytes % 8 == 0);
-	checksum_index++;
-	uint64_t xsum = checksum_gpu((uint64_t*)send_buf_extract_mpi, bytes / 8) ^ (1 + checksum_index);
-	*(uint64_t*)(((char*)&hsend_buf[0]) + bytes) = xsum;
-	bytes += 8;
-#endif
-	grid->SendToRecvFrom((void *)&hsend_buf[0],
-			     xmit_to_rank,
-			     (void *)&hrecv_buf[0],
-			     recv_from_rank,
-			     bytes);
-#ifdef GRID_CHECKSUM_COMMS
-	bytes -= 8;
-	acceleratorCopyToDevice((void *)&hrecv_buf[0],(void *)recv_buf_extract_mpi,bytes);
-	uint64_t expected_cs = *(uint64_t*)(((char*)&hrecv_buf[0]) + bytes);
-	uint64_t computed_cs = checksum_gpu((uint64_t*)recv_buf_extract_mpi, bytes / 8) ^ (1 + checksum_index);
 
-	std::cout << GridLogComms<< " Cshift_comms_simd: "
-		<<" dim"<<dimension
-		<<" shift "<<shift
-		<< " rank "<< grid->ThisRank()
-		<<" Coor "<<grid->ThisProcessorCoor()
-		<<" send "<<xsum<<" to   "<<xmit_to_rank
-		<<" recv "<<computed_cs<<" from "<<recv_from_rank
-		<<std::endl;
-	assert(expected_cs == computed_cs);
-#else
-	acceleratorCopyToDevice((void *)&hrecv_buf[0],(void *)recv_buf_extract_mpi,bytes);
-#endif
-
-#endif
-
-	xbytes+=bytes;
 	grid->Barrier();
-	tcomms+=usecond();
 
 	rpointers[i] = &recv_buf_extract[i][0];
       } else { 
@@ -466,19 +270,198 @@ template<class vobj> void  Cshift_comms_simd(Lattice<vobj> &ret,const Lattice<vo
       }
 
     }
-    tscatter-=usecond();
     Scatter_plane_merge(ret,rpointers,dimension,x,cbmask);
-    tscatter+=usecond();
   }
-  if(Cshift_verbose){
+
-    std::cout << GridLogPerformance << " Cshift (s) copy    "<<tcopy/1e3<<" ms"<<std::endl;
+}
-    std::cout << GridLogPerformance << " Cshift (s) gather  "<<tgather/1e3<<" ms"<<std::endl;
+#else 
-    std::cout << GridLogPerformance << " Cshift (s) scatter "<<tscatter/1e3<<" ms"<<std::endl;
+template<class vobj> void Cshift_comms(Lattice<vobj> &ret,const Lattice<vobj> &rhs,int dimension,int shift,int cbmask)
-    std::cout << GridLogPerformance << " Cshift (s) comm    "<<tcomms/1e3<<" ms"<<std::endl;
+{
-    std::cout << GridLogPerformance << " Cshift BW      "<<(2.0*xbytes)/tcomms<<" MB/s "<<2*xbytes<< " Bytes "<<std::endl;
+  typedef typename vobj::vector_type vector_type;
+  typedef typename vobj::scalar_type scalar_type;
+
+  GridBase *grid=rhs.Grid();
+  Lattice<vobj> temp(rhs.Grid());
+
+  int fd              = rhs.Grid()->_fdimensions[dimension];
+  int rd              = rhs.Grid()->_rdimensions[dimension];
+  int pd              = rhs.Grid()->_processors[dimension];
+  int simd_layout     = rhs.Grid()->_simd_layout[dimension];
+  int comm_dim        = rhs.Grid()->_processors[dimension] >1 ;
+  assert(simd_layout==1);
+  assert(comm_dim==1);
+  assert(shift>=0);
+  assert(shift<fd);
+  
+  int buffer_size = rhs.Grid()->_slice_nblock[dimension]*rhs.Grid()->_slice_block[dimension];
+  static cshiftVector<vobj> send_buf_v; send_buf_v.resize(buffer_size);
+  static cshiftVector<vobj> recv_buf_v; recv_buf_v.resize(buffer_size);
+  vobj *send_buf;
+  vobj *recv_buf;
+  {
+    grid->ShmBufferFreeAll();
+    size_t bytes = buffer_size*sizeof(vobj);
+    send_buf=(vobj *)grid->ShmBufferMalloc(bytes);
+    recv_buf=(vobj *)grid->ShmBufferMalloc(bytes);
+  }
+    
+  int cb= (cbmask==0x2)? Odd : Even;
+  int sshift= rhs.Grid()->CheckerBoardShiftForCB(rhs.Checkerboard(),dimension,shift,cb);
+
+  for(int x=0;x<rd;x++){       
+
+    int sx        =  (x+sshift)%rd;
+    int comm_proc = ((x+sshift)/rd)%pd;
+    
+    if (comm_proc==0) {
+
+      Copy_plane(ret,rhs,dimension,x,sx,cbmask); 
+
+    } else {
+
+      int words = buffer_size;
+      if (cbmask != 0x3) words=words>>1;
+
+      int bytes = words * sizeof(vobj);
+
+      Gather_plane_simple (rhs,send_buf_v,dimension,sx,cbmask);
+
+      //      int rank           = grid->_processor;
+      int recv_from_rank;
+      int xmit_to_rank;
+      grid->ShiftedRanks(dimension,comm_proc,xmit_to_rank,recv_from_rank);
+
+
+      grid->Barrier();
+
+      acceleratorCopyDeviceToDevice((void *)&send_buf_v[0],(void *)&send_buf[0],bytes);
+      grid->SendToRecvFrom((void *)&send_buf[0],
+			   xmit_to_rank,
+			   (void *)&recv_buf[0],
+			   recv_from_rank,
+			   bytes);
+      acceleratorCopyDeviceToDevice((void *)&recv_buf[0],(void *)&recv_buf_v[0],bytes);
+
+      grid->Barrier();
+
+      Scatter_plane_simple (ret,recv_buf_v,dimension,x,cbmask);
+    }
   }
 }
 
+template<class vobj> void  Cshift_comms_simd(Lattice<vobj> &ret,const Lattice<vobj> &rhs,int dimension,int shift,int cbmask)
+{
+  GridBase *grid=rhs.Grid();
+  const int Nsimd = grid->Nsimd();
+  typedef typename vobj::vector_type vector_type;
+  typedef typename vobj::scalar_object scalar_object;
+  typedef typename vobj::scalar_type scalar_type;
+   
+  int fd = grid->_fdimensions[dimension];
+  int rd = grid->_rdimensions[dimension];
+  int ld = grid->_ldimensions[dimension];
+  int pd = grid->_processors[dimension];
+  int simd_layout     = grid->_simd_layout[dimension];
+  int comm_dim        = grid->_processors[dimension] >1 ;
+
+  //std::cout << "Cshift_comms_simd dim "<< dimension << " fd "<<fd<<" rd "<<rd
+  //    << " ld "<<ld<<" pd " << pd<<" simd_layout "<<simd_layout 
+  //    << " comm_dim " << comm_dim << " cbmask " << cbmask <<std::endl;
+
+  assert(comm_dim==1);
+  assert(simd_layout==2);
+  assert(shift>=0);
+  assert(shift<fd);
+
+  int permute_type=grid->PermuteType(dimension);
+
+  ///////////////////////////////////////////////
+  // Simd direction uses an extract/merge pair
+  ///////////////////////////////////////////////
+  int buffer_size = grid->_slice_nblock[dimension]*grid->_slice_block[dimension];
+  //  int words = sizeof(vobj)/sizeof(vector_type);
+
+  static std::vector<cshiftVector<scalar_object> >  send_buf_extract; send_buf_extract.resize(Nsimd);
+  static std::vector<cshiftVector<scalar_object> >  recv_buf_extract; recv_buf_extract.resize(Nsimd);
+  scalar_object *  recv_buf_extract_mpi;
+  scalar_object *  send_buf_extract_mpi;
+  {
+    size_t bytes = sizeof(scalar_object)*buffer_size;
+    grid->ShmBufferFreeAll();
+    send_buf_extract_mpi = (scalar_object *)grid->ShmBufferMalloc(bytes);
+    recv_buf_extract_mpi = (scalar_object *)grid->ShmBufferMalloc(bytes);
+  }
+  for(int s=0;s<Nsimd;s++){
+    send_buf_extract[s].resize(buffer_size);
+    recv_buf_extract[s].resize(buffer_size);
+  }
+
+  int bytes = buffer_size*sizeof(scalar_object);
+
+  ExtractPointerArray<scalar_object>  pointers(Nsimd); // 
+  ExtractPointerArray<scalar_object> rpointers(Nsimd); // received pointers
+
+  ///////////////////////////////////////////
+  // Work out what to send where
+  ///////////////////////////////////////////
+  int cb    = (cbmask==0x2)? Odd : Even;
+  int sshift= grid->CheckerBoardShiftForCB(rhs.Checkerboard(),dimension,shift,cb);
+
+  // loop over outer coord planes orthog to dim
+  for(int x=0;x<rd;x++){       
+
+    // FIXME call local permute copy if none are offnode.
+    for(int i=0;i<Nsimd;i++){       
+      pointers[i] = &send_buf_extract[i][0];
+    }
+    int sx   = (x+sshift)%rd;
+    Gather_plane_extract(rhs,pointers,dimension,sx,cbmask);
+
+    for(int i=0;i<Nsimd;i++){
+      
+      int inner_bit = (Nsimd>>(permute_type+1));
+      int ic= (i&inner_bit)? 1:0;
+
+      int my_coor          = rd*ic + x;
+      int nbr_coor         = my_coor+sshift;
+      int nbr_proc = ((nbr_coor)/ld) % pd;// relative shift in processors
+
+      int nbr_ic   = (nbr_coor%ld)/rd;    // inner coord of peer
+      int nbr_ox   = (nbr_coor%rd);       // outer coord of peer
+      int nbr_lane = (i&(~inner_bit));
+
+      int recv_from_rank;
+      int xmit_to_rank;
+
+      if (nbr_ic) nbr_lane|=inner_bit;
+
+      assert (sx == nbr_ox);
+
+      if(nbr_proc){
+	grid->ShiftedRanks(dimension,nbr_proc,xmit_to_rank,recv_from_rank); 
+
+	grid->Barrier();
+
+	acceleratorCopyDeviceToDevice((void *)&send_buf_extract[nbr_lane][0],(void *)send_buf_extract_mpi,bytes);
+	grid->SendToRecvFrom((void *)send_buf_extract_mpi,
+			     xmit_to_rank,
+			     (void *)recv_buf_extract_mpi,
+			     recv_from_rank,
+			     bytes);
+	acceleratorCopyDeviceToDevice((void *)recv_buf_extract_mpi,(void *)&recv_buf_extract[i][0],bytes);
+
+	grid->Barrier();
+	rpointers[i] = &recv_buf_extract[i][0];
+      } else { 
+	rpointers[i] = &send_buf_extract[nbr_lane][0];
+      }
+
+    }
+    Scatter_plane_merge(ret,rpointers,dimension,x,cbmask);
+  }
+
+}
+#endif
 NAMESPACE_END(Grid); 
 
 #endif

Grid/cshift/Cshift_table.cc

@@ -1,5 +1,4 @@
 #include <Grid/GridCore.h>       
 NAMESPACE_BEGIN(Grid);
-std::vector<std::pair<int,int> > Cshift_table; 
+Vector<std::pair<int,int> > Cshift_table; 
-deviceVector<std::pair<int,int> > Cshift_table_device; 
 NAMESPACE_END(Grid);

Grid/lattice/Lattice.h

@@ -35,7 +35,6 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #include <Grid/lattice/Lattice_transpose.h>
 #include <Grid/lattice/Lattice_local.h>
 #include <Grid/lattice/Lattice_reduction.h>
-#include <Grid/lattice/Lattice_crc.h>
 #include <Grid/lattice/Lattice_peekpoke.h>
 #include <Grid/lattice/Lattice_reality.h>
 #include <Grid/lattice/Lattice_real_imag.h>
@@ -47,4 +46,3 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #include <Grid/lattice/Lattice_unary.h>
 #include <Grid/lattice/Lattice_transfer.h>
 #include <Grid/lattice/Lattice_basis.h>
-#include <Grid/lattice/PaddedCell.h>

Grid/lattice/Lattice_ET.h

@@ -63,7 +63,7 @@ accelerator_inline vobj predicatedWhere(const iobj &predicate,
   typename std::remove_const<vobj>::type ret;
 
   typedef typename vobj::scalar_object scalar_object;
-  //  typedef typename vobj::scalar_type scalar_type;
+  typedef typename vobj::scalar_type scalar_type;
   typedef typename vobj::vector_type vector_type;
 
   const int Nsimd = vobj::vector_type::Nsimd();
@@ -245,7 +245,7 @@ template <class T1,typename std::enable_if<is_lattice<T1>::value, T1>::type * =
 inline void CBFromExpression(int &cb, const T1 &lat)  // Lattice leaf
 {
   if ((cb == Odd) || (cb == Even)) {
-    GRID_ASSERT(cb == lat.Checkerboard());
+    assert(cb == lat.Checkerboard());
   }
   cb = lat.Checkerboard();
 }
@@ -345,9 +345,7 @@ GridUnopClass(UnaryNot, Not(a));
 GridUnopClass(UnaryTrace, trace(a));
 GridUnopClass(UnaryTranspose, transpose(a));
 GridUnopClass(UnaryTa, Ta(a));
-GridUnopClass(UnarySpTa, SpTa(a));
 GridUnopClass(UnaryProjectOnGroup, ProjectOnGroup(a));
-GridUnopClass(UnaryProjectOnSpGroup, ProjectOnSpGroup(a));
 GridUnopClass(UnaryTimesI, timesI(a));
 GridUnopClass(UnaryTimesMinusI, timesMinusI(a));
 GridUnopClass(UnaryAbs, abs(a));
@@ -458,9 +456,7 @@ GRID_DEF_UNOP(operator!, UnaryNot);
 GRID_DEF_UNOP(trace, UnaryTrace);
 GRID_DEF_UNOP(transpose, UnaryTranspose);
 GRID_DEF_UNOP(Ta, UnaryTa);
-GRID_DEF_UNOP(SpTa, UnarySpTa);
 GRID_DEF_UNOP(ProjectOnGroup, UnaryProjectOnGroup);
-GRID_DEF_UNOP(ProjectOnSpGroup, UnaryProjectOnSpGroup);
 GRID_DEF_UNOP(timesI, UnaryTimesI);
 GRID_DEF_UNOP(timesMinusI, UnaryTimesMinusI);
 GRID_DEF_UNOP(abs, UnaryAbs);  // abs overloaded in cmath C++98; DON'T do the

Grid/lattice/Lattice_arith.h

@@ -36,7 +36,6 @@ NAMESPACE_BEGIN(Grid);
 //////////////////////////////////////////////////////////////////////////////////////////////////////
 template<class obj1,class obj2,class obj3> inline
 void mult(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const Lattice<obj3> &rhs){
-  GRID_TRACE("mult");
   ret.Checkerboard() = lhs.Checkerboard();
   autoView( ret_v , ret, AcceleratorWrite);
   autoView( lhs_v , lhs, AcceleratorRead);
@@ -54,7 +53,6 @@ void mult(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const Lattice<obj3> &rhs){
   
 template<class obj1,class obj2,class obj3> inline
 void mac(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const Lattice<obj3> &rhs){
-  GRID_TRACE("mac");
   ret.Checkerboard() = lhs.Checkerboard();
   conformable(ret,rhs);
   conformable(lhs,rhs);
@@ -72,7 +70,6 @@ void mac(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const Lattice<obj3> &rhs){
   
 template<class obj1,class obj2,class obj3> inline
 void sub(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const Lattice<obj3> &rhs){
-  GRID_TRACE("sub");
   ret.Checkerboard() = lhs.Checkerboard();
   conformable(ret,rhs);
   conformable(lhs,rhs);
@@ -89,7 +86,6 @@ void sub(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const Lattice<obj3> &rhs){
 }
 template<class obj1,class obj2,class obj3> inline
 void add(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const Lattice<obj3> &rhs){
-  GRID_TRACE("add");
   ret.Checkerboard() = lhs.Checkerboard();
   conformable(ret,rhs);
   conformable(lhs,rhs);
@@ -110,7 +106,6 @@ void add(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const Lattice<obj3> &rhs){
 //////////////////////////////////////////////////////////////////////////////////////////////////////
 template<class obj1,class obj2,class obj3> inline
 void mult(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const obj3 &rhs){
-  GRID_TRACE("mult");
   ret.Checkerboard() = lhs.Checkerboard();
   conformable(lhs,ret);
   autoView( ret_v , ret, AcceleratorWrite);
@@ -124,7 +119,6 @@ void mult(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const obj3 &rhs){
   
 template<class obj1,class obj2,class obj3> inline
 void mac(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const obj3 &rhs){
-  GRID_TRACE("mac");
   ret.Checkerboard() = lhs.Checkerboard();
   conformable(ret,lhs);
   autoView( ret_v , ret, AcceleratorWrite);
@@ -139,7 +133,6 @@ void mac(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const obj3 &rhs){
   
 template<class obj1,class obj2,class obj3> inline
 void sub(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const obj3 &rhs){
-  GRID_TRACE("sub");
   ret.Checkerboard() = lhs.Checkerboard();
   conformable(ret,lhs);
   autoView( ret_v , ret, AcceleratorWrite);
@@ -153,7 +146,6 @@ void sub(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const obj3 &rhs){
 }
 template<class obj1,class obj2,class obj3> inline
 void add(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const obj3 &rhs){
-  GRID_TRACE("add");
   ret.Checkerboard() = lhs.Checkerboard();
   conformable(lhs,ret);
   autoView( ret_v , ret, AcceleratorWrite);
@@ -171,7 +163,6 @@ void add(Lattice<obj1> &ret,const Lattice<obj2> &lhs,const obj3 &rhs){
 //////////////////////////////////////////////////////////////////////////////////////////////////////
 template<class obj1,class obj2,class obj3> inline
 void mult(Lattice<obj1> &ret,const obj2 &lhs,const Lattice<obj3> &rhs){
-  GRID_TRACE("mult");
   ret.Checkerboard() = rhs.Checkerboard();
   conformable(ret,rhs);
   autoView( ret_v , ret, AcceleratorWrite);
@@ -186,7 +177,6 @@ void mult(Lattice<obj1> &ret,const obj2 &lhs,const Lattice<obj3> &rhs){
   
 template<class obj1,class obj2,class obj3> inline
 void mac(Lattice<obj1> &ret,const obj2 &lhs,const Lattice<obj3> &rhs){
-  GRID_TRACE("mac");
   ret.Checkerboard() = rhs.Checkerboard();
   conformable(ret,rhs);
   autoView( ret_v , ret, AcceleratorWrite);
@@ -201,7 +191,6 @@ void mac(Lattice<obj1> &ret,const obj2 &lhs,const Lattice<obj3> &rhs){
   
 template<class obj1,class obj2,class obj3> inline
 void sub(Lattice<obj1> &ret,const obj2 &lhs,const Lattice<obj3> &rhs){
-  GRID_TRACE("sub");
   ret.Checkerboard() = rhs.Checkerboard();
   conformable(ret,rhs);
   autoView( ret_v , ret, AcceleratorWrite);
@@ -215,7 +204,6 @@ void sub(Lattice<obj1> &ret,const obj2 &lhs,const Lattice<obj3> &rhs){
 }
 template<class obj1,class obj2,class obj3> inline
 void add(Lattice<obj1> &ret,const obj2 &lhs,const Lattice<obj3> &rhs){
-  GRID_TRACE("add");
   ret.Checkerboard() = rhs.Checkerboard();
   conformable(ret,rhs);
   autoView( ret_v , ret, AcceleratorWrite);
@@ -230,7 +218,6 @@ void add(Lattice<obj1> &ret,const obj2 &lhs,const Lattice<obj3> &rhs){
   
 template<class sobj,class vobj> inline
 void axpy(Lattice<vobj> &ret,sobj a,const Lattice<vobj> &x,const Lattice<vobj> &y){
-  GRID_TRACE("axpy");
   ret.Checkerboard() = x.Checkerboard();
   conformable(ret,x);
   conformable(x,y);
@@ -238,13 +225,12 @@ void axpy(Lattice<vobj> &ret,sobj a,const Lattice<vobj> &x,const Lattice<vobj> &
   autoView( x_v , x, AcceleratorRead);
   autoView( y_v , y, AcceleratorRead);
   accelerator_for(ss,x_v.size(),vobj::Nsimd(),{
-    auto tmp = a*coalescedRead(x_v[ss])+coalescedRead(y_v[ss]);
+    auto tmp = a*x_v(ss)+y_v(ss);
     coalescedWrite(ret_v[ss],tmp);
   });
 }
 template<class sobj,class vobj> inline
 void axpby(Lattice<vobj> &ret,sobj a,sobj b,const Lattice<vobj> &x,const Lattice<vobj> &y){
-  GRID_TRACE("axpby");
   ret.Checkerboard() = x.Checkerboard();
   conformable(ret,x);
   conformable(x,y);
@@ -257,68 +243,16 @@ void axpby(Lattice<vobj> &ret,sobj a,sobj b,const Lattice<vobj> &x,const Lattice
   });
 }
 
-#define FAST_AXPY_NORM
 template<class sobj,class vobj> inline
 RealD axpy_norm(Lattice<vobj> &ret,sobj a,const Lattice<vobj> &x,const Lattice<vobj> &y)
 {
-  GRID_TRACE("axpy_norm");
+    return axpy_norm_fast(ret,a,x,y);
-#ifdef FAST_AXPY_NORM
-  return axpy_norm_fast(ret,a,x,y);
-#else
-  ret = a*x+y;
-  RealD nn=norm2(ret);
-  return nn;
-#endif
 }
 template<class sobj,class vobj> inline
 RealD axpby_norm(Lattice<vobj> &ret,sobj a,sobj b,const Lattice<vobj> &x,const Lattice<vobj> &y)
 {
-  GRID_TRACE("axpby_norm");
+    return axpby_norm_fast(ret,a,b,x,y);
-#ifdef FAST_AXPY_NORM
-  return axpby_norm_fast(ret,a,b,x,y);
-#else
-  ret = a*x+b*y;
-  RealD nn=norm2(ret);
-  return nn;
-#endif
 }
 
-/// Trace product
-template<class obj> auto traceProduct(const Lattice<obj> &rhs_1,const Lattice<obj> &rhs_2)
-  -> Lattice<decltype(trace(obj()))>
-{
-  typedef decltype(trace(obj())) robj;
-  Lattice<robj> ret_i(rhs_1.Grid());
-  autoView( rhs1 , rhs_1, AcceleratorRead);
-  autoView( rhs2 , rhs_2, AcceleratorRead);
-  autoView( ret , ret_i, AcceleratorWrite);
-  ret.Checkerboard() = rhs_1.Checkerboard();
-  accelerator_for(ss,rhs1.size(),obj::Nsimd(),{
-      coalescedWrite(ret[ss],traceProduct(rhs1(ss),rhs2(ss)));
-  });
-  return ret_i;
-}
-
-template<class obj1,class obj2> auto traceProduct(const Lattice<obj1> &rhs_1,const obj2 &rhs2)
-  -> Lattice<decltype(trace(obj1()))>
-{
-  typedef decltype(trace(obj1())) robj;
-  Lattice<robj> ret_i(rhs_1.Grid());
-  autoView( rhs1 , rhs_1, AcceleratorRead);
-  autoView( ret , ret_i, AcceleratorWrite);
-  ret.Checkerboard() = rhs_1.Checkerboard();
-  accelerator_for(ss,rhs1.size(),obj1::Nsimd(),{
-      coalescedWrite(ret[ss],traceProduct(rhs1(ss),rhs2));
-  });
-  return ret_i;
-}
-template<class obj1,class obj2> auto traceProduct(const obj2 &rhs_2,const Lattice<obj1> &rhs_1)
-  -> Lattice<decltype(trace(obj1()))>
-{
-  return traceProduct(rhs_1,rhs_2);
-}
-
-
-
 NAMESPACE_END(Grid);
 #endif

Grid/lattice/Lattice_base.h

@@ -88,13 +88,6 @@ public:
     LatticeView<vobj> accessor(*( (LatticeAccelerator<vobj> *) this),mode);
     accessor.ViewClose();
   }
-
-  // Helper function to print the state of this object in the AccCache
-  void PrintCacheState(void)
-  {
-    MemoryManager::PrintState(this->_odata);
-  }
-
   /////////////////////////////////////////////////////////////////////////////////
   // Return a view object that may be dereferenced in site loops.
   // The view is trivially copy constructible and may be copied to an accelerator device
@@ -117,15 +110,14 @@ public:
   ////////////////////////////////////////////////////////////////////////////////
   template <typename Op, typename T1> inline Lattice<vobj> & operator=(const LatticeUnaryExpression<Op,T1> &expr)
   {
-    GRID_TRACE("ExpressionTemplateEval");
     GridBase *egrid(nullptr);
     GridFromExpression(egrid,expr);
-    GRID_ASSERT(egrid!=nullptr);
+    assert(egrid!=nullptr);
     conformable(this->_grid,egrid);
 
     int cb=-1;
     CBFromExpression(cb,expr);
-    GRID_ASSERT( (cb==Odd) || (cb==Even));
+    assert( (cb==Odd) || (cb==Even));
     this->checkerboard=cb;
     
     auto exprCopy = expr;
@@ -141,15 +133,14 @@ public:
   }
   template <typename Op, typename T1,typename T2> inline Lattice<vobj> & operator=(const LatticeBinaryExpression<Op,T1,T2> &expr)
   {
-    GRID_TRACE("ExpressionTemplateEval");
     GridBase *egrid(nullptr);
     GridFromExpression(egrid,expr);
-    GRID_ASSERT(egrid!=nullptr);
+    assert(egrid!=nullptr);
     conformable(this->_grid,egrid);
 
     int cb=-1;
     CBFromExpression(cb,expr);
-    GRID_ASSERT( (cb==Odd) || (cb==Even));
+    assert( (cb==Odd) || (cb==Even));
     this->checkerboard=cb;
 
     auto exprCopy = expr;
@@ -165,15 +156,14 @@ public:
   }
   template <typename Op, typename T1,typename T2,typename T3> inline Lattice<vobj> & operator=(const LatticeTrinaryExpression<Op,T1,T2,T3> &expr)
   {
-    GRID_TRACE("ExpressionTemplateEval");
     GridBase *egrid(nullptr);
     GridFromExpression(egrid,expr);
-    GRID_ASSERT(egrid!=nullptr);
+    assert(egrid!=nullptr);
     conformable(this->_grid,egrid);
 
     int cb=-1;
     CBFromExpression(cb,expr);
-    GRID_ASSERT( (cb==Odd) || (cb==Even));
+    assert( (cb==Odd) || (cb==Even));
     this->checkerboard=cb;
     auto exprCopy = expr;
     ExpressionViewOpen(exprCopy);
@@ -191,11 +181,11 @@ public:
   Lattice(const LatticeUnaryExpression<Op,T1> & expr) {
     this->_grid = nullptr;
     GridFromExpression(this->_grid,expr);
-    GRID_ASSERT(this->_grid!=nullptr);
+    assert(this->_grid!=nullptr);
 
     int cb=-1;
     CBFromExpression(cb,expr);
-    GRID_ASSERT( (cb==Odd) || (cb==Even));
+    assert( (cb==Odd) || (cb==Even));
     this->checkerboard=cb;
 
     resize(this->_grid->oSites());
@@ -206,11 +196,11 @@ public:
   Lattice(const LatticeBinaryExpression<Op,T1,T2> & expr) {
     this->_grid = nullptr;
     GridFromExpression(this->_grid,expr);
-    GRID_ASSERT(this->_grid!=nullptr);
+    assert(this->_grid!=nullptr);
 
     int cb=-1;
     CBFromExpression(cb,expr);
-    GRID_ASSERT( (cb==Odd) || (cb==Even));
+    assert( (cb==Odd) || (cb==Even));
     this->checkerboard=cb;
 
     resize(this->_grid->oSites());
@@ -221,11 +211,11 @@ public:
   Lattice(const LatticeTrinaryExpression<Op,T1,T2,T3> & expr) {
     this->_grid = nullptr;
     GridFromExpression(this->_grid,expr);
-    GRID_ASSERT(this->_grid!=nullptr);
+    assert(this->_grid!=nullptr);
 
     int cb=-1;
     CBFromExpression(cb,expr);
-    GRID_ASSERT( (cb==Odd) || (cb==Even));
+    assert( (cb==Odd) || (cb==Even));
     this->checkerboard=cb;
 
     resize(this->_grid->oSites());
@@ -234,23 +224,10 @@ public:
   }
 
   template<class sobj> inline Lattice<vobj> & operator = (const sobj & r){
-    vobj vtmp;
-    vtmp = r;
-#if 1
-    deviceVector<vobj> vvtmp(1);
-    acceleratorPut(vvtmp[0],vtmp);
-    vobj *vvtmp_p = & vvtmp[0];
-    auto me  = View(AcceleratorWrite);
-    accelerator_for(ss,me.size(),vobj::Nsimd(),{
-	auto stmp=coalescedRead(*vvtmp_p);
-	coalescedWrite(me[ss],stmp);
-    });
-#else    
     auto me  = View(CpuWrite);
     thread_for(ss,me.size(),{
-       me[ss]= r;
+	me[ss]= r;
-      });
+    });
-#endif    
     me.ViewClose();
     return *this;
   }
@@ -264,7 +241,7 @@ public:
   Lattice(GridBase *grid,ViewMode mode=AcceleratorWriteDiscard) { 
     this->_grid = grid;
     resize(this->_grid->oSites());
-    GRID_ASSERT((((uint64_t)&this->_odata[0])&0xF) ==0);
+    assert((((uint64_t)&this->_odata[0])&0xF) ==0);
     this->checkerboard=0;
     SetViewMode(mode);
   }
@@ -304,8 +281,8 @@ public:
     typename std::enable_if<!std::is_same<robj,vobj>::value,int>::type i=0;
     conformable(*this,r);
     this->checkerboard = r.Checkerboard();
-    auto him= r.View(AcceleratorRead);
     auto me =   View(AcceleratorWriteDiscard);
+    auto him= r.View(AcceleratorRead);
     accelerator_for(ss,me.size(),vobj::Nsimd(),{
       coalescedWrite(me[ss],him(ss));
     });
@@ -319,8 +296,8 @@ public:
   inline Lattice<vobj> & operator = (const Lattice<vobj> & r){
     this->checkerboard = r.Checkerboard();
     conformable(*this,r);
-    auto him= r.View(AcceleratorRead);
     auto me =   View(AcceleratorWriteDiscard);
+    auto him= r.View(AcceleratorRead);
     accelerator_for(ss,me.size(),vobj::Nsimd(),{
       coalescedWrite(me[ss],him(ss));
     });
@@ -373,7 +350,7 @@ public:
 
 template<class vobj> std::ostream& operator<< (std::ostream& stream, const Lattice<vobj> &o){
   typedef typename vobj::scalar_object sobj;
-  for(int64_t g=0;g<o.Grid()->_gsites;g++){
+  for(int g=0;g<o.Grid()->_gsites;g++){
 
     Coordinate gcoor;
     o.Grid()->GlobalIndexToGlobalCoor(g,gcoor);

Grid/lattice/Lattice_basis.h

@@ -53,19 +53,36 @@ void basisRotate(VField &basis,Matrix& Qt,int j0, int j1, int k0,int k1,int Nm)
   typedef decltype(basis[0]) Field;
   typedef decltype(basis[0].View(AcceleratorRead)) View;
 
-  hostVector<View>  h_basis_v(basis.size());
+  Vector<View> basis_v; basis_v.reserve(basis.size());
-  deviceVector<View> d_basis_v(basis.size());
+  typedef typename std::remove_reference<decltype(basis_v[0][0])>::type vobj;
-  typedef typename std::remove_reference<decltype(h_basis_v[0][0])>::type vobj;
   typedef typename std::remove_reference<decltype(Qt(0,0))>::type Coeff_t;
-
   GridBase* grid = basis[0].Grid();
       
   for(int k=0;k<basis.size();k++){
-    h_basis_v[k] = basis[k].View(AcceleratorWrite);
+    basis_v.push_back(basis[k].View(AcceleratorWrite));
-    acceleratorPut(d_basis_v[k],h_basis_v[k]);
   }
 
-  View *basis_vp = &d_basis_v[0];
+#if ( (!defined(GRID_CUDA)) )
+  int max_threads = thread_max();
+  Vector < vobj > Bt(Nm * max_threads);
+  thread_region
+    {
+      vobj* B = &Bt[Nm * thread_num()];
+      thread_for_in_region(ss, grid->oSites(),{
+	  for(int j=j0; j<j1; ++j) B[j]=0.;
+      
+	  for(int j=j0; j<j1; ++j){
+	    for(int k=k0; k<k1; ++k){
+	      B[j] +=Qt(j,k) * basis_v[k][ss];
+	    }
+	  }
+	  for(int j=j0; j<j1; ++j){
+	    basis_v[j][ss] = B[j];
+	  }
+	});
+    }
+#else
+  View *basis_vp = &basis_v[0];
 
   int nrot = j1-j0;
   if (!nrot) // edge case not handled gracefully by Cuda
@@ -74,19 +91,17 @@ void basisRotate(VField &basis,Matrix& Qt,int j0, int j1, int k0,int k1,int Nm)
   uint64_t oSites   =grid->oSites();
   uint64_t siteBlock=(grid->oSites()+nrot-1)/nrot; // Maximum 1 additional vector overhead
 
-  deviceVector <vobj> Bt(siteBlock * nrot); 
+  Vector <vobj> Bt(siteBlock * nrot); 
   auto Bp=&Bt[0];
 
   // GPU readable copy of matrix
-  hostVector<Coeff_t> h_Qt_jv(Nm*Nm);
+  Vector<Coeff_t> Qt_jv(Nm*Nm);
-  deviceVector<Coeff_t> Qt_jv(Nm*Nm);
   Coeff_t *Qt_p = & Qt_jv[0];
   thread_for(i,Nm*Nm,{
       int j = i/Nm;
       int k = i%Nm;
-      h_Qt_jv[i]=Qt(j,k);
+      Qt_p[i]=Qt(j,k);
   });
-  acceleratorCopyToDevice(&h_Qt_jv[0],Qt_p,Nm*Nm*sizeof(Coeff_t));
 
   // Block the loop to keep storage footprint down
   for(uint64_t s=0;s<oSites;s+=siteBlock){
@@ -110,7 +125,7 @@ void basisRotate(VField &basis,Matrix& Qt,int j0, int j1, int k0,int k1,int Nm)
 
 	for(int k=k0; k<k1; ++k){
 	  auto tmp = coalescedRead(Bp[ss*nrot+j]);
-	  coalescedWrite(Bp[ss*nrot+j],tmp+ Qt_p[jj*Nm+k] * coalescedRead(basis_vp[k][sss]));
+	  coalescedWrite(Bp[ss*nrot+j],tmp+ Qt_p[jj*Nm+k] * coalescedRead(basis_v[k][sss]));
 	}
       });
 
@@ -119,11 +134,12 @@ void basisRotate(VField &basis,Matrix& Qt,int j0, int j1, int k0,int k1,int Nm)
 	int jj  =j0+j;
 	int ss =sj/nrot;
 	int sss=ss+s;
-	coalescedWrite(basis_vp[jj][sss],coalescedRead(Bp[ss*nrot+j]));
+	coalescedWrite(basis_v[jj][sss],coalescedRead(Bp[ss*nrot+j]));
       });
   }
+#endif
 
-  for(int k=0;k<basis.size();k++) h_basis_v[k].ViewClose();
+  for(int k=0;k<basis.size();k++) basis_v[k].ViewClose();
 }
 
 // Extract a single rotated vector
@@ -136,19 +152,16 @@ void basisRotateJ(Field &result,std::vector<Field> &basis,Eigen::MatrixXd& Qt,in
 
   result.Checkerboard() = basis[0].Checkerboard();
 
-  hostVector<View>  h_basis_v(basis.size());
+  Vector<View> basis_v; basis_v.reserve(basis.size());
-  deviceVector<View> d_basis_v(basis.size());
   for(int k=0;k<basis.size();k++){
-    h_basis_v[k]=basis[k].View(AcceleratorRead);
+    basis_v.push_back(basis[k].View(AcceleratorRead));
-    acceleratorPut(d_basis_v[k],h_basis_v[k]);
   }
-
   vobj zz=Zero();
-  deviceVector<double> Qt_jv(Nm);
+  Vector<double> Qt_jv(Nm);
   double * Qt_j = & Qt_jv[0];
-  for(int k=0;k<Nm;++k) acceleratorPut(Qt_j[k],Qt(j,k));
+  for(int k=0;k<Nm;++k) Qt_j[k]=Qt(j,k);
 
-  auto basis_vp=& d_basis_v[0];
+  auto basis_vp=& basis_v[0];
   autoView(result_v,result,AcceleratorWrite);
   accelerator_for(ss, grid->oSites(),vobj::Nsimd(),{
     vobj zzz=Zero();
@@ -158,7 +171,7 @@ void basisRotateJ(Field &result,std::vector<Field> &basis,Eigen::MatrixXd& Qt,in
     }
     coalescedWrite(result_v[ss], B);
   });
-  for(int k=0;k<basis.size();k++) h_basis_v[k].ViewClose();
+  for(int k=0;k<basis.size();k++) basis_v[k].ViewClose();
 }
 
 template<class Field>
@@ -166,9 +179,9 @@ void basisReorderInPlace(std::vector<Field> &_v,std::vector<RealD>& sort_vals, s
 {
   int vlen = idx.size();
 
-  GRID_ASSERT(vlen>=1);
+  assert(vlen>=1);
-  GRID_ASSERT(vlen<=sort_vals.size());
+  assert(vlen<=sort_vals.size());
-  GRID_ASSERT(vlen<=_v.size());
+  assert(vlen<=_v.size());
 
   for (size_t i=0;i<vlen;i++) {
 
@@ -186,7 +199,7 @@ void basisReorderInPlace(std::vector<Field> &_v,std::vector<RealD>& sort_vals, s
 	if (idx[j]==i)
 	  break;
 
-      GRID_ASSERT(idx[i] > i);     GRID_ASSERT(j!=idx.size());      GRID_ASSERT(idx[j]==i);
+      assert(idx[i] > i);     assert(j!=idx.size());      assert(idx[j]==i);
 
       swap(_v[i],_v[idx[i]]); // should use vector move constructor, no data copy
       std::swap(sort_vals[i],sort_vals[idx[i]]);
@@ -224,7 +237,7 @@ void basisSortInPlace(std::vector<Field> & _v,std::vector<RealD>& sort_vals, boo
 template<class Field>
 void basisDeflate(const std::vector<Field> &_v,const std::vector<RealD>& eval,const Field& src_orig,Field& result) {
   result = Zero();
-  GRID_ASSERT(_v.size()==eval.size());
+  assert(_v.size()==eval.size());
   int N = (int)_v.size();
   for (int i=0;i<N;i++) {
     Field& tmp = _v[i];

Grid/lattice/Lattice_conformable.h

@@ -32,8 +32,8 @@ NAMESPACE_BEGIN(Grid);
 
 template<class obj1,class obj2> void conformable(const Lattice<obj1> &lhs,const Lattice<obj2> &rhs)
 {
-  GRID_ASSERT(lhs.Grid() == rhs.Grid());
+  assert(lhs.Grid() == rhs.Grid());
-  GRID_ASSERT(lhs.Checkerboard() == rhs.Checkerboard());
+  assert(lhs.Checkerboard() == rhs.Checkerboard());
 }
 
 NAMESPACE_END(Grid);

Grid/lattice/Lattice_crc.h

@@ -1,55 +0,0 @@
-/*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/lattice/Lattice_crc.h
-
-    Copyright (C) 2021
-
-Author: Peter Boyle <paboyle@ph.ed.ac.uk>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-    See the full license in the file "LICENSE" in the top level distribution directory
-*************************************************************************************/
-/*  END LEGAL */
-#pragma once
-
-NAMESPACE_BEGIN(Grid);
-
-template<class vobj> void DumpSliceNorm(std::string s,const Lattice<vobj> &f,int mu=-1)
-{
-  auto ff = localNorm2(f);
-  if ( mu==-1 ) mu = f.Grid()->Nd()-1;
-  typedef typename vobj::tensor_reduced normtype;
-  typedef typename normtype::scalar_object scalar;
-  std::vector<scalar> sff;
-  sliceSum(ff,sff,mu);
-  for(int t=0;t<sff.size();t++){
-    std::cout << s<<" "<<t<<" "<<sff[t]<<std::endl;
-  }
-}
-
-template<class vobj> uint32_t crc(const Lattice<vobj> & buf)
-{
-  autoView( buf_v , buf, CpuRead);
-  return ::crc32(0L,(unsigned char *)&buf_v[0],(size_t)sizeof(vobj)*buf.oSites());
-}
-
-#define CRC(U) std::cerr << "FingerPrint "<<__FILE__ <<" "<< __LINE__ <<" "<< #U <<" "<<crc(U)<<std::endl;
-
-NAMESPACE_END(Grid);
-
-