SHM complete

Code stalls and resumes on KNL at cambridge. Curious.

CG iterations 23ms each, then 3200 ms pauses. Mean bandwidth reports
as 200MB/s. Comms dominant in the report. However, the time behaviour suggests it
is *bursty*.... Could be swap to disk?

.travis.yml

@@ -9,68 +9,6 @@ matrix:
     - os:        osx
       osx_image: xcode8.3
       compiler: clang
-    - compiler: gcc
-      dist: trusty
-      sudo: required
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-4.9
-            - libmpfr-dev
-            - libgmp-dev
-            - libmpc-dev
-            - libopenmpi-dev
-            - openmpi-bin
-            - binutils-dev
-      env: VERSION=-4.9
-    - compiler: gcc
-      dist: trusty
-      sudo: required
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-5
-            - libmpfr-dev
-            - libgmp-dev
-            - libmpc-dev
-            - libopenmpi-dev
-            - openmpi-bin
-            - binutils-dev
-      env: VERSION=-5
-    - compiler: clang
-      dist: trusty
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-4.8
-            - libmpfr-dev
-            - libgmp-dev
-            - libmpc-dev
-            - libopenmpi-dev
-            - openmpi-bin
-            - binutils-dev
-      env: CLANG_LINK=http://llvm.org/releases/3.8.0/clang+llvm-3.8.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz
-    - compiler: clang
-      dist: trusty
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-4.8
-            - libmpfr-dev
-            - libgmp-dev
-            - libmpc-dev
-            - libopenmpi-dev
-            - openmpi-bin
-            - binutils-dev
-      env: CLANG_LINK=http://llvm.org/releases/3.7.0/clang+llvm-3.7.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz
       
 before_install:
     - export GRIDDIR=`pwd`
@@ -106,9 +44,3 @@ script:
     - make -j4
     - ./benchmarks/Benchmark_dwf --threads 1 --debug-signals
     - make check
-    - echo make clean
-    - if [[ "$TRAVIS_OS_NAME" == "linux" ]] && [[ "$CC" == "clang" ]]; then ../configure --enable-precision=single --enable-simd=SSE4 --enable-comms=mpi-auto ; fi
-    - if [[ "$TRAVIS_OS_NAME" == "linux" ]] && [[ "$CC" == "clang" ]]; then make -j4; fi
-    - if [[ "$TRAVIS_OS_NAME" == "linux" ]] && [[ "$CC" == "clang" ]]; then mpirun.openmpi -n 2 ./benchmarks/Benchmark_dwf --threads 1 --mpi 2.1.1.1; fi
-
-

README.md

@@ -1,27 +1,44 @@
-# Grid
-<table>
-<tr>
-    <td>Last stable release</td>
-    <td><a href="https://travis-ci.org/paboyle/Grid">
-    <img src="https://travis-ci.org/paboyle/Grid.svg?branch=master"></a>
-    </td>
-</tr>
-<tr>
-    <td>Development branch</td>
-    <td><a href="https://travis-ci.org/paboyle/Grid">
-    <img src="https://travis-ci.org/paboyle/Grid.svg?branch=develop"></a>
-    </td>
-</tr>
-</table>
+# Grid [![Teamcity status](http://ci.cliath.ph.ed.ac.uk/app/rest/builds/aggregated/strob:(buildType:(affectedProject(id:Grid)),branch:name:develop)/statusIcon.svg)](http://ci.cliath.ph.ed.ac.uk/project.html?projectId=Grid&tab=projectOverview) [![Travis status](https://travis-ci.org/paboyle/Grid.svg?branch=develop)](https://travis-ci.org/paboyle/Grid)
 
 **Data parallel C++ mathematical object library.**
 
 License: GPL v2.
 
-Last update Nov 2016.
+Last update June 2017.
 
 _Please do not send pull requests to the `master` branch which is reserved for releases._
 
+
+
+### Description
+This library provides data parallel C++ container classes with internal memory layout
+that is transformed to map efficiently to SIMD architectures. CSHIFT facilities
+are provided, similar to HPF and cmfortran, and user control is given over the mapping of
+array indices to both MPI tasks and SIMD processing elements.
+
+* Identically shaped arrays then be processed with perfect data parallelisation.
+* Such identically shaped arrays are called conformable arrays.
+
+The transformation is based on the observation that Cartesian array processing involves
+identical processing to be performed on different regions of the Cartesian array.
+
+The library will both geometrically decompose into MPI tasks and across SIMD lanes.
+Local vector loops are parallelised with OpenMP pragmas.
+
+Data parallel array operations can then be specified with a SINGLE data parallel paradigm, but
+optimally use MPI, OpenMP and SIMD parallelism under the hood. This is a significant simplification
+for most programmers.
+
+The layout transformations are parametrised by the SIMD vector length. This adapts according to the architecture.
+Presently SSE4, ARM NEON (128 bits) AVX, AVX2, QPX (256 bits), IMCI and AVX512 (512 bits) targets are supported.
+
+These are presented as `vRealF`, `vRealD`, `vComplexF`, and `vComplexD` internal vector data types. 
+The corresponding scalar types are named `RealF`, `RealD`, `ComplexF` and `ComplexD`.
+
+MPI, OpenMP, and SIMD parallelism are present in the library.
+Please see [this paper](https://arxiv.org/abs/1512.03487) for more detail.
+
+
 ### Compilers
 
 Intel ICPC v16.0.3 and later
@@ -56,35 +73,25 @@ When you file an issue, please go though the following checklist:
 6. Attach the output of `make V=1`.
 7. Describe the issue and any previous attempt to solve it. If relevant, show how to reproduce the issue using a minimal working example.
 
+### Required libraries
+Grid requires:
 
+[GMP](https://gmplib.org/), 
 
-### Description
-This library provides data parallel C++ container classes with internal memory layout
-that is transformed to map efficiently to SIMD architectures. CSHIFT facilities
-are provided, similar to HPF and cmfortran, and user control is given over the mapping of
-array indices to both MPI tasks and SIMD processing elements.
+[MPFR](http://www.mpfr.org/) 
 
-* Identically shaped arrays then be processed with perfect data parallelisation.
-* Such identically shaped arrays are called conformable arrays.
+Bootstrapping grid downloads and uses for internal dense matrix (non-QCD operations) the Eigen library.
 
-The transformation is based on the observation that Cartesian array processing involves
-identical processing to be performed on different regions of the Cartesian array.
+Grid optionally uses:
 
-The library will both geometrically decompose into MPI tasks and across SIMD lanes.
-Local vector loops are parallelised with OpenMP pragmas.
+[HDF5](https://support.hdfgroup.org/HDF5/)  
 
-Data parallel array operations can then be specified with a SINGLE data parallel paradigm, but
-optimally use MPI, OpenMP and SIMD parallelism under the hood. This is a significant simplification
-for most programmers.
+[LIME](http://usqcd-software.github.io/c-lime/) for ILDG and SciDAC file format support. 
 
-The layout transformations are parametrised by the SIMD vector length. This adapts according to the architecture.
-Presently SSE4 (128 bit) AVX, AVX2, QPX (256 bit), IMCI, and AVX512 (512 bit) targets are supported (ARM NEON on the way).
+[FFTW](http://www.fftw.org) either generic version or via the Intel MKL library.
 
-These are presented as `vRealF`, `vRealD`, `vComplexF`, and `vComplexD` internal vector data types. These may be useful in themselves for other programmers.
-The corresponding scalar types are named `RealF`, `RealD`, `ComplexF` and `ComplexD`.
+LAPACK either generic version or Intel MKL library.
 
-MPI, OpenMP, and SIMD parallelism are present in the library.
-Please see https://arxiv.org/abs/1512.03487 for more detail.
 
 ### Quick start
 First, start by cloning the repository:
@@ -155,7 +162,6 @@ The following options can be use with the `--enable-comms=` option to target dif
 | `none`         | no communications                                             |
 | `mpi[-auto]`   | MPI communications                                            |
 | `mpi3[-auto]`  | MPI communications using MPI 3 shared memory                  |
-| `mpi3l[-auto]` | MPI communications using MPI 3 shared memory and leader model |
 | `shmem `       | Cray SHMEM communications                                     |
 
 For the MPI interfaces the optional `-auto` suffix instructs the `configure` scripts to determine all the necessary compilation and linking flags. This is done by extracting the informations from the MPI wrapper specified in the environment variable `MPICXX` (if not specified `configure` will scan though a list of default names). The `-auto` suffix is not supported by the Cray environment wrapper scripts. Use the standard versions instead.  
@@ -173,7 +179,8 @@ The following options can be use with the `--enable-simd=` option to target diff
 | `AVXFMA4`   | AVX (256 bit) + FMA4                   |
 | `AVX2`      | AVX 2 (256 bit)                        |
 | `AVX512`    | AVX 512 bit                            |
-| `QPX`       | QPX (256 bit)                          |
+| `NEONv8`    | [ARM NEON](http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.den0024a/ch07s03.html) (128 bit)                     |
+| `QPX`       | IBM QPX (256 bit)                      |
 
 Alternatively, some CPU codenames can be directly used:
 
@@ -195,21 +202,205 @@ The following configuration is recommended for the Intel Knights Landing platfor
 ``` bash
 ../configure --enable-precision=double\
              --enable-simd=KNL        \
-             --enable-comms=mpi-auto \
-             --with-gmp=<path>        \
-             --with-mpfr=<path>       \
+             --enable-comms=mpi-auto  \
              --enable-mkl             \
              CXX=icpc MPICXX=mpiicpc
 ```
+The MKL flag enables use of BLAS and FFTW from the Intel Math Kernels Library.
 
-where `<path>` is the UNIX prefix where GMP and MPFR are installed. If you are working on a Cray machine that does not use the `mpiicpc` wrapper, please use:
+If you are working on a Cray machine that does not use the `mpiicpc` wrapper, please use:
 
 ``` bash
 ../configure --enable-precision=double\
              --enable-simd=KNL        \
              --enable-comms=mpi       \
-             --with-gmp=<path>        \
-             --with-mpfr=<path>       \
              --enable-mkl             \
              CXX=CC CC=cc
-```
+```
+
+If gmp and mpfr are NOT in standard places (/usr/) these flags may be needed:
+``` bash
+               --with-gmp=<path>        \
+               --with-mpfr=<path>       \
+```
+where `<path>` is the UNIX prefix where GMP and MPFR are installed. 
+
+Knight's Landing with Intel Omnipath adapters with two adapters per node 
+presently performs better with use of more than one rank per node, using shared memory 
+for interior communication. This is the mpi3 communications implementation. 
+We recommend four ranks per node for best performance, but optimum is local volume dependent.
+
+``` bash
+../configure --enable-precision=double\
+             --enable-simd=KNL        \
+             --enable-comms=mpi3-auto \
+             --enable-mkl             \
+             CC=icpc MPICXX=mpiicpc 
+```
+
+### Build setup for Intel Haswell Xeon platform
+
+The following configuration is recommended for the Intel Haswell platform:
+
+``` bash
+../configure --enable-precision=double\
+             --enable-simd=AVX2       \
+             --enable-comms=mpi3-auto \
+             --enable-mkl             \
+             CXX=icpc MPICXX=mpiicpc
+```
+The MKL flag enables use of BLAS and FFTW from the Intel Math Kernels Library.
+
+If gmp and mpfr are NOT in standard places (/usr/) these flags may be needed:
+``` bash
+               --with-gmp=<path>        \
+               --with-mpfr=<path>       \
+```
+where `<path>` is the UNIX prefix where GMP and MPFR are installed. 
+
+If you are working on a Cray machine that does not use the `mpiicpc` wrapper, please use:
+
+``` bash
+../configure --enable-precision=double\
+             --enable-simd=AVX2       \
+             --enable-comms=mpi3      \
+             --enable-mkl             \
+             CXX=CC CC=cc
+```
+Since Dual socket nodes are commonplace, we recommend MPI-3 as the default with the use of 
+one rank per socket. If using the Intel MPI library, threads should be pinned to NUMA domains using
+```
+        export I_MPI_PIN=1
+```
+This is the default.
+
+### Build setup for Intel Skylake Xeon platform
+
+The following configuration is recommended for the Intel Skylake platform:
+
+``` bash
+../configure --enable-precision=double\
+             --enable-simd=AVX512     \
+             --enable-comms=mpi3      \
+             --enable-mkl             \
+             CXX=mpiicpc
+```
+The MKL flag enables use of BLAS and FFTW from the Intel Math Kernels Library.
+
+If gmp and mpfr are NOT in standard places (/usr/) these flags may be needed:
+``` bash
+               --with-gmp=<path>        \
+               --with-mpfr=<path>       \
+```
+where `<path>` is the UNIX prefix where GMP and MPFR are installed. 
+
+If you are working on a Cray machine that does not use the `mpiicpc` wrapper, please use:
+
+``` bash
+../configure --enable-precision=double\
+             --enable-simd=AVX512     \
+             --enable-comms=mpi3      \
+             --enable-mkl             \
+             CXX=CC CC=cc
+```
+Since Dual socket nodes are commonplace, we recommend MPI-3 as the default with the use of 
+one rank per socket. If using the Intel MPI library, threads should be pinned to NUMA domains using
+``` 
+        export I_MPI_PIN=1
+```
+This is the default. 
+
+#### Expected Skylake Gold 6148 dual socket (single prec, single node 20+20 cores) performance using NUMA MPI mapping): 
+
+mpirun -n 2 benchmarks/Benchmark_dwf --grid 16.16.16.16 --mpi 2.1.1.1 --cacheblocking 2.2.2.2 --dslash-asm --shm 1024 --threads 18 
+
+TBA
+
+
+### Build setup for AMD EPYC / RYZEN
+
+The AMD EPYC is a multichip module comprising 32 cores spread over four distinct chips each with 8 cores.
+So, even with a single socket node there is a quad-chip module. Dual socket nodes with 64 cores total
+are common. Each chip within the module exposes a separate NUMA domain.
+There are four NUMA domains per socket and we recommend one MPI rank per NUMA domain.
+MPI-3 is recommended with the use of four ranks per socket,
+and 8 threads per rank. 
+
+The following configuration is recommended for the AMD EPYC platform.
+
+``` bash
+../configure --enable-precision=double\
+             --enable-simd=AVX2       \
+             --enable-comms=mpi3 \
+             CXX=mpicxx 
+```
+
+If gmp and mpfr are NOT in standard places (/usr/) these flags may be needed:
+``` bash
+               --with-gmp=<path>        \
+               --with-mpfr=<path>       \
+```
+where `<path>` is the UNIX prefix where GMP and MPFR are installed. 
+
+Using MPICH and g++ v4.9.2, best performance can be obtained using explicit GOMP_CPU_AFFINITY flags for each MPI rank.
+This can be done by invoking MPI on a wrapper script omp_bind.sh to handle this. 
+
+It is recommended to run 8 MPI ranks on a single dual socket AMD EPYC, with 8 threads per rank using MPI3 and
+shared memory to communicate within this node:
+
+mpirun -np 8 ./omp_bind.sh ./Benchmark_dwf --mpi 2.2.2.1 --dslash-unroll --threads 8 --grid 16.16.16.16 --cacheblocking 4.4.4.4 
+
+Where omp_bind.sh does the following:
+```
+#!/bin/bash
+
+numanode=` expr $PMI_RANK % 8 `
+basecore=`expr $numanode \* 16`
+core0=`expr $basecore + 0 `
+core1=`expr $basecore + 2 `
+core2=`expr $basecore + 4 `
+core3=`expr $basecore + 6 `
+core4=`expr $basecore + 8 `
+core5=`expr $basecore + 10 `
+core6=`expr $basecore + 12 `
+core7=`expr $basecore + 14 `
+
+export GOMP_CPU_AFFINITY="$core0 $core1 $core2 $core3 $core4 $core5 $core6 $core7"
+echo GOMP_CUP_AFFINITY $GOMP_CPU_AFFINITY
+
+$@
+```
+
+Performance:
+
+#### Expected AMD EPYC 7601 dual socket (single prec, single node 32+32 cores) performance using NUMA MPI mapping): 
+
+mpirun  -np 8 ./omp_bind.sh ./Benchmark_dwf --threads 8 --mpi 2.2.2.1 --dslash-unroll --grid 16.16.16.16 --cacheblocking 4.4.4.4
+
+TBA
+
+### Build setup for BlueGene/Q
+
+To be written...
+
+### Build setup for ARM Neon
+
+To be written...
+
+### Build setup for laptops, other compilers, non-cluster builds
+
+Many versions of g++ and clang++ work with Grid, and involve merely replacing CXX (and MPICXX),
+and omit the enable-mkl flag. 
+
+Single node builds are enabled with 
+```
+            --enable-comms=none
+```
+
+FFTW support that is not in the default search path may then enabled with
+```
+    --with-fftw=<installpath>
+```
+
+BLAS will not be compiled in by default, and Lanczos will default to Eigen diagonalisation.
+

TODO

@@ -1,23 +1,32 @@
 TODO:
 ---------------
 
-Peter's work list:
-2)- Precision conversion and sort out localConvert      <-- 
-3)- Remove DenseVector, DenseMatrix; Use Eigen instead. <-- started 
-4)- Binary I/O speed up & x-strips
--- Profile CG, BlockCG, etc... Flop count/rate -- PARTIAL, time but no flop/s yet
--- Physical propagator interface
--- Conserved currents
--- GaugeFix into central location
--- Multigrid Wilson and DWF, compare to other Multigrid implementations
--- HDCR resume
+Large item work list:
+
+1)- BG/Q port and check
+2)- Christoph's local basis expansion Lanczos
+3)- Precision conversion and sort out localConvert      <-- partial
+
+  - Consistent linear solver flop count/rate -- PARTIAL, time but no flop/s yet
+4)- Physical propagator interface
+5)- Conserved currents
+6)- Multigrid Wilson and DWF, compare to other Multigrid implementations
+7)- HDCR resume
 
 Recent DONE 
+
+-- MultiRHS with spread out extra dim -- Go through filesystem with SciDAC I/O.  <--- DONE
+-- Lanczos Remove DenseVector, DenseMatrix; Use Eigen instead. <-- DONE
+-- GaugeFix into central location                      <-- DONE
+-- Scidac and Ildg metadata handling                   <-- DONE
+-- Binary I/O MPI2 IO                                  <-- DONE
+-- Binary I/O speed up & x-strips                      <-- DONE
 -- Cut down the exterior overhead                      <-- DONE
 -- Interior legs from SHM comms                        <-- DONE
 -- Half-precision comms                                <-- DONE
--- Merge high precision reduction into develop        
--- multiRHS DWF; benchmark on Cori/BNL for comms elimination
+-- Merge high precision reduction into develop         <-- DONE
+-- BlockCG, BCGrQ                                      <-- DONE
+-- multiRHS DWF; benchmark on Cori/BNL for comms elimination <-- DONE
    -- slice* linalg routines for multiRHS, BlockCG    
 
 -----

benchmarks/Benchmark_ITT.cc

@@ -0,0 +1,797 @@
+    /*************************************************************************************
+
+    Grid physics library, www.github.com/paboyle/Grid 
+
+    Source file: ./benchmarks/Benchmark_memory_bandwidth.cc
+
+    Copyright (C) 2015
+
+Author: Peter Boyle <paboyle@ph.ed.ac.uk>
+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 */
+#include <Grid/Grid.h>
+
+using namespace std;
+using namespace Grid;
+using namespace Grid::QCD;
+
+typedef WilsonFermion5D<DomainWallVec5dImplR> WilsonFermion5DR;
+typedef WilsonFermion5D<DomainWallVec5dImplF> WilsonFermion5DF;
+typedef WilsonFermion5D<DomainWallVec5dImplD> WilsonFermion5DD;
+
+
+std::vector<int> L_list;
+std::vector<int> Ls_list;
+std::vector<double> mflop_list;
+
+double mflop_ref;
+double mflop_ref_err;
+
+int NN_global;
+
+struct time_statistics{
+  double mean;
+  double err;
+  double min;
+  double max;
+
+  void statistics(std::vector<double> v){
+      double sum = std::accumulate(v.begin(), v.end(), 0.0);
+      mean = sum / v.size();
+
+      std::vector<double> diff(v.size());
+      std::transform(v.begin(), v.end(), diff.begin(), [=](double x) { return x - mean; });
+      double sq_sum = std::inner_product(diff.begin(), diff.end(), diff.begin(), 0.0);
+      err = std::sqrt(sq_sum / (v.size()*(v.size() - 1)));
+
+      auto result = std::minmax_element(v.begin(), v.end());
+      min = *result.first;
+      max = *result.second;
+}
+};
+
+void comms_header(){
+  std::cout <<GridLogMessage << " L  "<<"\t"<<" Ls  "<<"\t"
+            <<std::setw(11)<<"bytes"<<"MB/s uni (err/min/max)"<<"\t\t"<<"MB/s bidi (err/min/max)"<<std::endl;
+};
+
+Gamma::Algebra Gmu [] = {
+  Gamma::Algebra::GammaX,
+  Gamma::Algebra::GammaY,
+  Gamma::Algebra::GammaZ,
+  Gamma::Algebra::GammaT
+};
+struct controls {
+  int Opt;
+  int CommsOverlap;
+  Grid::CartesianCommunicator::CommunicatorPolicy_t CommsAsynch;
+  //  int HugePages;
+};
+
+class Benchmark {
+public:
+  static void Decomposition (void ) {
+
+    int threads = GridThread::GetThreads();
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << "= Grid is setup to use "<<threads<<" threads"<<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage<<"Grid Default Decomposition patterns\n";
+    std::cout<<GridLogMessage<<"\tOpenMP threads : "<<GridThread::GetThreads()<<std::endl;
+    std::cout<<GridLogMessage<<"\tMPI tasks      : "<<GridCmdVectorIntToString(GridDefaultMpi())<<std::endl;
+    std::cout<<GridLogMessage<<"\tvReal          : "<<sizeof(vReal )*8    <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vReal::Nsimd()))<<std::endl;
+    std::cout<<GridLogMessage<<"\tvRealF         : "<<sizeof(vRealF)*8    <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vRealF::Nsimd()))<<std::endl;
+    std::cout<<GridLogMessage<<"\tvRealD         : "<<sizeof(vRealD)*8    <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vRealD::Nsimd()))<<std::endl;
+    std::cout<<GridLogMessage<<"\tvComplex       : "<<sizeof(vComplex )*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vComplex::Nsimd()))<<std::endl;
+    std::cout<<GridLogMessage<<"\tvComplexF      : "<<sizeof(vComplexF)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vComplexF::Nsimd()))<<std::endl;
+    std::cout<<GridLogMessage<<"\tvComplexD      : "<<sizeof(vComplexD)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vComplexD::Nsimd()))<<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+  }
+
+  static void Comms(void)
+  {
+    int Nloop=200;
+    int nmu=0;
+    int maxlat=32;
+
+    std::vector<int> simd_layout = GridDefaultSimd(Nd,vComplexD::Nsimd());
+    std::vector<int> mpi_layout  = GridDefaultMpi();
+
+    for(int mu=0;mu<Nd;mu++) if (mpi_layout[mu]>1) nmu++;
+
+    std::vector<double> t_time(Nloop);
+    time_statistics timestat;
+
+    std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << "= Benchmarking threaded STENCIL halo exchange in "<<nmu<<" dimensions"<<std::endl;
+    std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+    comms_header();
+
+    for(int lat=4;lat<=maxlat;lat+=4){
+      for(int Ls=8;Ls<=8;Ls*=2){
+
+	std::vector<int> latt_size  ({lat*mpi_layout[0],
+	      lat*mpi_layout[1],
+	      lat*mpi_layout[2],
+	      lat*mpi_layout[3]});
+
+	GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+	RealD Nrank = Grid._Nprocessors;
+	RealD Nnode = Grid.NodeCount();
+	RealD ppn = Nrank/Nnode;
+
+	std::vector<HalfSpinColourVectorD *> xbuf(8);
+	std::vector<HalfSpinColourVectorD *> rbuf(8);
+	Grid.ShmBufferFreeAll();
+	for(int d=0;d<8;d++){
+	  xbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	  rbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	  bzero((void *)xbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	  bzero((void *)rbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	}
+
+	int bytes=lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD);
+	int ncomm;
+	double dbytes;
+	std::vector<double> times(Nloop);
+	for(int i=0;i<Nloop;i++){
+
+	  double start=usecond();
+
+	  dbytes=0;
+	  ncomm=0;
+
+	  parallel_for(int dir=0;dir<8;dir++){
+
+	    double tbytes;
+	    int mu =dir % 4;
+
+	    if (mpi_layout[mu]>1 ) {
+	        
+	      int xmit_to_rank;
+	      int recv_from_rank;
+	      if ( dir == mu ) { 
+		int comm_proc=1;
+		Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
+	      } else { 
+		int comm_proc = mpi_layout[mu]-1;
+		Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
+	      }
+	      tbytes= Grid.StencilSendToRecvFrom((void *)&xbuf[dir][0], xmit_to_rank,
+						 (void *)&rbuf[dir][0], recv_from_rank,
+						 bytes,dir);
+	  
+#ifdef GRID_OMP
+#pragma omp atomic
+#endif
+	      ncomm++;
+
+#ifdef GRID_OMP
+#pragma omp atomic
+#endif
+	      dbytes+=tbytes;
+	    }
+	  }
+	  Grid.Barrier();
+	  double stop=usecond();
+	  t_time[i] = stop-start; // microseconds
+	}
+
+	timestat.statistics(t_time);
+	//	for(int i=0;i<t_time.size();i++){
+	//	  std::cout << i<<" "<<t_time[i]<<std::endl;
+	//	}
+
+	dbytes=dbytes*ppn;
+	double xbytes    = dbytes*0.5;
+	double rbytes    = dbytes*0.5;
+	double bidibytes = dbytes;
+
+	std::cout<<GridLogMessage << std::setw(4) << lat<<"\t"<<Ls<<"\t"
+		 <<std::setw(11) << bytes<< std::fixed << std::setprecision(1) << std::setw(7)
+		 <<std::right<< xbytes/timestat.mean<<"  "<< xbytes*timestat.err/(timestat.mean*timestat.mean)<< " "
+		 <<xbytes/timestat.max <<" "<< xbytes/timestat.min  
+		 << "\t\t"<<std::setw(7)<< bidibytes/timestat.mean<< "  " << bidibytes*timestat.err/(timestat.mean*timestat.mean) << " "
+		 << bidibytes/timestat.max << " " << bidibytes/timestat.min << std::endl;
+
+ 
+	
+	    }
+    }    
+
+    return;
+  }
+
+  static void Memory(void)
+  {
+    const int Nvec=8;
+    typedef Lattice< iVector< vReal,Nvec> > LatticeVec;
+    typedef iVector<vReal,Nvec> Vec;
+
+    std::vector<int> simd_layout = GridDefaultSimd(Nd,vReal::Nsimd());
+    std::vector<int> mpi_layout  = GridDefaultMpi();
+
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << "= Benchmarking a*x + y bandwidth"<<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s"<<"\t\t"<<"Gflop/s"<<"\t\t seconds"<< "\t\tGB/s / node"<<std::endl;
+    std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
+  
+    uint64_t NP;
+    uint64_t NN;
+
+
+  uint64_t lmax=48;
+#define NLOOP (100*lmax*lmax*lmax*lmax/lat/lat/lat/lat)
+
+    GridSerialRNG          sRNG;      sRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+    for(int lat=8;lat<=lmax;lat+=4){
+
+      std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
+      int64_t vol= latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+
+      NP= Grid.RankCount();
+      NN =Grid.NodeCount();
+
+      Vec rn ; random(sRNG,rn);
+
+      LatticeVec z(&Grid); z=rn;
+      LatticeVec x(&Grid); x=rn;
+      LatticeVec y(&Grid); y=rn;
+      double a=2.0;
+
+      uint64_t Nloop=NLOOP;
+
+      double start=usecond();
+      for(int i=0;i<Nloop;i++){
+	z=a*x-y;
+        x._odata[0]=z._odata[0]; // force serial dependency to prevent optimise away
+        y._odata[4]=z._odata[4];
+      }
+      double stop=usecond();
+      double time = (stop-start)/Nloop*1000;
+     
+      double flops=vol*Nvec*2;// mul,add
+      double bytes=3.0*vol*Nvec*sizeof(Real);
+      std::cout<<GridLogMessage<<std::setprecision(3) 
+	       << lat<<"\t\t"<<bytes<<"   \t\t"<<bytes/time<<"\t\t"<<flops/time<<"\t\t"<<(stop-start)/1000./1000.
+	       << "\t\t"<< bytes/time/NN <<std::endl;
+
+    }
+  };
+
+  static double DWF5(int Ls,int L)
+  {
+    RealD mass=0.1;
+    RealD M5  =1.8;
+
+    double mflops;
+    double mflops_best = 0;
+    double mflops_worst= 0;
+    std::vector<double> mflops_all;
+
+    ///////////////////////////////////////////////////////
+    // Set/Get the layout & grid size
+    ///////////////////////////////////////////////////////
+    int threads = GridThread::GetThreads();
+    std::vector<int> mpi = GridDefaultMpi(); assert(mpi.size()==4);
+    std::vector<int> local({L,L,L,L});
+
+    GridCartesian         * TmpGrid   = SpaceTimeGrid::makeFourDimGrid(std::vector<int>({64,64,64,64}), 
+								       GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
+    uint64_t NP = TmpGrid->RankCount();
+    uint64_t NN = TmpGrid->NodeCount();
+    NN_global=NN;
+    uint64_t SHM=NP/NN;
+
+    std::vector<int> internal;
+    if      ( SHM == 1 )   internal = std::vector<int>({1,1,1,1});
+    else if ( SHM == 2 )   internal = std::vector<int>({2,1,1,1});
+    else if ( SHM == 4 )   internal = std::vector<int>({2,2,1,1});
+    else if ( SHM == 8 )   internal = std::vector<int>({2,2,2,1});
+    else assert(0);
+
+    std::vector<int> nodes({mpi[0]/internal[0],mpi[1]/internal[1],mpi[2]/internal[2],mpi[3]/internal[3]});
+    std::vector<int> latt4({local[0]*nodes[0],local[1]*nodes[1],local[2]*nodes[2],local[3]*nodes[3]});
+
+    ///////// Welcome message ////////////
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << "Benchmark DWF Ls vec on "<<L<<"^4 local volume "<<std::endl;
+    std::cout<<GridLogMessage << "* Global volume  : "<<GridCmdVectorIntToString(latt4)<<std::endl;
+    std::cout<<GridLogMessage << "* Ls             : "<<Ls<<std::endl;
+    std::cout<<GridLogMessage << "* MPI ranks      : "<<GridCmdVectorIntToString(mpi)<<std::endl;
+    std::cout<<GridLogMessage << "* Intranode      : "<<GridCmdVectorIntToString(internal)<<std::endl;
+    std::cout<<GridLogMessage << "* nodes          : "<<GridCmdVectorIntToString(nodes)<<std::endl;
+    std::cout<<GridLogMessage << "* Using "<<threads<<" threads"<<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+    ///////// Lattice Init ////////////
+    GridCartesian         * UGrid    = SpaceTimeGrid::makeFourDimGrid(latt4, GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
+    GridRedBlackCartesian * UrbGrid  = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
+    GridCartesian         * sUGrid   = SpaceTimeGrid::makeFourDimDWFGrid(latt4,GridDefaultMpi());
+    GridRedBlackCartesian * sUrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(sUGrid);
+    GridCartesian         * sFGrid   = SpaceTimeGrid::makeFiveDimDWFGrid(Ls,UGrid);
+    GridRedBlackCartesian * sFrbGrid = SpaceTimeGrid::makeFiveDimDWFRedBlackGrid(Ls,UGrid);
+
+    ///////// RNG Init ////////////
+    std::vector<int> seeds4({1,2,3,4});
+    std::vector<int> seeds5({5,6,7,8});
+    GridParallelRNG          RNG4(UGrid);  RNG4.SeedFixedIntegers(seeds4);
+    GridParallelRNG          RNG5(sFGrid);  RNG5.SeedFixedIntegers(seeds5);
+    std::cout << GridLogMessage << "Initialised RNGs" << std::endl;
+
+    ///////// Source preparation ////////////
+    LatticeFermion src   (sFGrid); random(RNG5,src);
+    LatticeFermion tmp   (sFGrid);
+
+    RealD N2 = 1.0/::sqrt(norm2(src));
+    src = src*N2;
+    
+    LatticeGaugeField Umu(UGrid);  SU3::HotConfiguration(RNG4,Umu); 
+
+    WilsonFermion5DR sDw(Umu,*sFGrid,*sFrbGrid,*sUGrid,*sUrbGrid,M5);
+    LatticeFermion src_e (sFrbGrid);
+    LatticeFermion src_o (sFrbGrid);
+    LatticeFermion r_e   (sFrbGrid);
+    LatticeFermion r_o   (sFrbGrid);
+    LatticeFermion r_eo  (sFGrid);
+    LatticeFermion err   (sFGrid);
+    {
+
+      pickCheckerboard(Even,src_e,src);
+      pickCheckerboard(Odd,src_o,src);
+
+#if defined(AVX512) 
+      const int num_cases = 6;
+      std::string fmt("A/S ; A/O ; U/S ; U/O ; G/S ; G/O ");
+#else
+      const int num_cases = 4;
+      std::string fmt("U/S ; U/O ; G/S ; G/O ");
+#endif
+      controls Cases [] = {
+#ifdef AVX512
+	{ QCD::WilsonKernelsStatic::OptInlineAsm , QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential  },
+	{ QCD::WilsonKernelsStatic::OptInlineAsm , QCD::WilsonKernelsStatic::CommsAndCompute  ,CartesianCommunicator::CommunicatorPolicySequential  },
+#endif
+	{ QCD::WilsonKernelsStatic::OptHandUnroll, QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential  },
+	{ QCD::WilsonKernelsStatic::OptHandUnroll, QCD::WilsonKernelsStatic::CommsAndCompute  ,CartesianCommunicator::CommunicatorPolicySequential  },
+	{ QCD::WilsonKernelsStatic::OptGeneric   , QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential  },
+	{ QCD::WilsonKernelsStatic::OptGeneric   , QCD::WilsonKernelsStatic::CommsAndCompute  ,CartesianCommunicator::CommunicatorPolicySequential  }
+      }; 
+
+      for(int c=0;c<num_cases;c++) {
+
+	QCD::WilsonKernelsStatic::Comms = Cases[c].CommsOverlap;
+	QCD::WilsonKernelsStatic::Opt   = Cases[c].Opt;
+	CartesianCommunicator::SetCommunicatorPolicy(Cases[c].CommsAsynch);
+
+	std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+	if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptGeneric   ) std::cout << GridLogMessage<< "* Using GENERIC Nc WilsonKernels" <<std::endl;
+	if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptHandUnroll) std::cout << GridLogMessage<< "* Using Nc=3       WilsonKernels" <<std::endl;
+	if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptInlineAsm ) std::cout << GridLogMessage<< "* Using Asm Nc=3   WilsonKernels" <<std::endl;
+	if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsAndCompute ) std::cout << GridLogMessage<< "* Using Overlapped Comms/Compute" <<std::endl;
+	if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsThenCompute) std::cout << GridLogMessage<< "* Using sequential comms compute" <<std::endl;
+	if ( sizeof(Real)==4 )   std::cout << GridLogMessage<< "* SINGLE precision "<<std::endl;
+	if ( sizeof(Real)==8 )   std::cout << GridLogMessage<< "* DOUBLE precision "<<std::endl;
+	std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+	int nwarm = 100;
+	uint64_t ncall = 1000;
+
+	double t0=usecond();
+	sFGrid->Barrier();
+	for(int i=0;i<nwarm;i++){
+	  sDw.DhopEO(src_o,r_e,DaggerNo);
+	}
+	sFGrid->Barrier();
+	double t1=usecond();
+
+	sDw.ZeroCounters();
+	time_statistics timestat;
+	std::vector<double> t_time(ncall);
+	for(uint64_t i=0;i<ncall;i++){
+	  t0=usecond();
+	  sDw.DhopEO(src_o,r_e,DaggerNo);
+	  t1=usecond();
+	  t_time[i] = t1-t0;
+	}
+	sFGrid->Barrier();
+	
+	double volume=Ls;  for(int mu=0;mu<Nd;mu++) volume=volume*latt4[mu];
+	double flops=(1344.0*volume)/2;
+	double mf_hi, mf_lo, mf_err;
+
+	timestat.statistics(t_time);
+	mf_hi = flops/timestat.min;
+	mf_lo = flops/timestat.max;
+	mf_err= flops/timestat.min * timestat.err/timestat.mean;
+
+	mflops = flops/timestat.mean;
+	mflops_all.push_back(mflops);
+	if ( mflops_best == 0   ) mflops_best = mflops;
+	if ( mflops_worst== 0   ) mflops_worst= mflops;
+	if ( mflops>mflops_best ) mflops_best = mflops;
+	if ( mflops<mflops_worst) mflops_worst= mflops;
+
+	std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"sDeo mflop/s =   "<< mflops << " ("<<mf_err<<") " << mf_lo<<"-"<<mf_hi <<std::endl;
+	std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"sDeo mflop/s per rank   "<< mflops/NP<<std::endl;
+	std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"sDeo mflop/s per node   "<< mflops/NN<<std::endl;
+
+	sDw.Report();
+
+      }
+      double robust = mflops_worst/mflops_best;;
+      std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+      std::cout<<GridLogMessage << L<<"^4 x "<<Ls<< " sDeo Best  mflop/s        =   "<< mflops_best << " ; " << mflops_best/NN<<" per node " <<std::endl;
+      std::cout<<GridLogMessage << L<<"^4 x "<<Ls<< " sDeo Worst mflop/s        =   "<< mflops_worst<< " ; " << mflops_worst/NN<<" per node " <<std::endl;
+
+      std::cout<<GridLogMessage <<std::setprecision(3)<< L<<"^4 x "<<Ls<< " Performance Robustness   =   "<< robust <<std::endl;
+      std::cout<<GridLogMessage <<fmt << std::endl;
+      std::cout<<GridLogMessage;
+
+      for(int i=0;i<mflops_all.size();i++){
+	std::cout<<mflops_all[i]/NN<<" ; " ;
+      }
+      std::cout<<std::endl;
+      std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+    }
+    return mflops_best;
+  }
+
+  static double DWF(int Ls,int L, double & robust)
+  {
+    RealD mass=0.1;
+    RealD M5  =1.8;
+
+    double mflops;
+    double mflops_best = 0;
+    double mflops_worst= 0;
+    std::vector<double> mflops_all;
+
+    ///////////////////////////////////////////////////////
+    // Set/Get the layout & grid size
+    ///////////////////////////////////////////////////////
+    int threads = GridThread::GetThreads();
+    std::vector<int> mpi = GridDefaultMpi(); assert(mpi.size()==4);
+    std::vector<int> local({L,L,L,L});
+
+    GridCartesian         * TmpGrid   = SpaceTimeGrid::makeFourDimGrid(std::vector<int>({64,64,64,64}), 
+								       GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
+    uint64_t NP = TmpGrid->RankCount();
+    uint64_t NN = TmpGrid->NodeCount();
+    NN_global=NN;
+    uint64_t SHM=NP/NN;
+
+    std::vector<int> internal;
+    if      ( SHM == 1 )   internal = std::vector<int>({1,1,1,1});
+    else if ( SHM == 2 )   internal = std::vector<int>({2,1,1,1});
+    else if ( SHM == 4 )   internal = std::vector<int>({2,2,1,1});
+    else if ( SHM == 8 )   internal = std::vector<int>({2,2,2,1});
+    else assert(0);
+
+    std::vector<int> nodes({mpi[0]/internal[0],mpi[1]/internal[1],mpi[2]/internal[2],mpi[3]/internal[3]});
+    std::vector<int> latt4({local[0]*nodes[0],local[1]*nodes[1],local[2]*nodes[2],local[3]*nodes[3]});
+
+    ///////// Welcome message ////////////
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << "Benchmark DWF on "<<L<<"^4 local volume "<<std::endl;
+    std::cout<<GridLogMessage << "* Global volume  : "<<GridCmdVectorIntToString(latt4)<<std::endl;
+    std::cout<<GridLogMessage << "* Ls             : "<<Ls<<std::endl;
+    std::cout<<GridLogMessage << "* MPI ranks      : "<<GridCmdVectorIntToString(mpi)<<std::endl;
+    std::cout<<GridLogMessage << "* Intranode      : "<<GridCmdVectorIntToString(internal)<<std::endl;
+    std::cout<<GridLogMessage << "* nodes          : "<<GridCmdVectorIntToString(nodes)<<std::endl;
+    std::cout<<GridLogMessage << "* Using "<<threads<<" threads"<<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+
+    ///////// Lattice Init ////////////
+    GridCartesian         * UGrid   = SpaceTimeGrid::makeFourDimGrid(latt4, GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
+    GridRedBlackCartesian * UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
+    GridCartesian         * FGrid   = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid);
+    GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid);
+
+    
+    ///////// RNG Init ////////////
+    std::vector<int> seeds4({1,2,3,4});
+    std::vector<int> seeds5({5,6,7,8});
+    GridParallelRNG          RNG4(UGrid);  RNG4.SeedFixedIntegers(seeds4);
+    GridParallelRNG          RNG5(FGrid);  RNG5.SeedFixedIntegers(seeds5);
+    std::cout << GridLogMessage << "Initialised RNGs" << std::endl;
+
+    ///////// Source preparation ////////////
+    LatticeFermion src   (FGrid); random(RNG5,src);
+    LatticeFermion ref   (FGrid);
+    LatticeFermion tmp   (FGrid);
+
+    RealD N2 = 1.0/::sqrt(norm2(src));
+    src = src*N2;
+    
+    LatticeGaugeField Umu(UGrid);  SU3::HotConfiguration(RNG4,Umu); 
+
+    DomainWallFermionR Dw(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
+
+    ////////////////////////////////////
+    // Naive wilson implementation
+    ////////////////////////////////////
+    {
+      LatticeGaugeField Umu5d(FGrid); 
+      std::vector<LatticeColourMatrix> U(4,FGrid);
+      for(int ss=0;ss<Umu._grid->oSites();ss++){
+	for(int s=0;s<Ls;s++){
+	  Umu5d._odata[Ls*ss+s] = Umu._odata[ss];
+	}
+      }
+      ref = zero;
+      for(int mu=0;mu<Nd;mu++){
+	U[mu] = PeekIndex<LorentzIndex>(Umu5d,mu);
+      }
+      for(int mu=0;mu<Nd;mu++){
+	
+	tmp = U[mu]*Cshift(src,mu+1,1);
+	ref=ref + tmp - Gamma(Gmu[mu])*tmp;
+	
+	tmp =adj(U[mu])*src;
+	tmp =Cshift(tmp,mu+1,-1);
+	ref=ref + tmp + Gamma(Gmu[mu])*tmp;
+      }
+      ref = -0.5*ref;
+    }
+
+    LatticeFermion src_e (FrbGrid);
+    LatticeFermion src_o (FrbGrid);
+    LatticeFermion r_e   (FrbGrid);
+    LatticeFermion r_o   (FrbGrid);
+    LatticeFermion r_eo  (FGrid);
+    LatticeFermion err   (FGrid);
+    {
+
+      pickCheckerboard(Even,src_e,src);
+      pickCheckerboard(Odd,src_o,src);
+
+#if defined(AVX512) 
+      const int num_cases = 6;
+      std::string fmt("A/S ; A/O ; U/S ; U/O ; G/S ; G/O ");
+#else
+      const int num_cases = 4;
+      std::string fmt("U/S ; U/O ; G/S ; G/O ");
+#endif
+      controls Cases [] = {
+#ifdef AVX512
+	{ QCD::WilsonKernelsStatic::OptInlineAsm , QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential  },
+	{ QCD::WilsonKernelsStatic::OptInlineAsm , QCD::WilsonKernelsStatic::CommsAndCompute  ,CartesianCommunicator::CommunicatorPolicySequential  },
+#endif
+	{ QCD::WilsonKernelsStatic::OptHandUnroll, QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential  },
+	{ QCD::WilsonKernelsStatic::OptHandUnroll, QCD::WilsonKernelsStatic::CommsAndCompute  ,CartesianCommunicator::CommunicatorPolicySequential  },
+	{ QCD::WilsonKernelsStatic::OptGeneric   , QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential  },
+	{ QCD::WilsonKernelsStatic::OptGeneric   , QCD::WilsonKernelsStatic::CommsAndCompute  ,CartesianCommunicator::CommunicatorPolicySequential  }
+      }; 
+
+      for(int c=0;c<num_cases;c++) {
+
+	QCD::WilsonKernelsStatic::Comms = Cases[c].CommsOverlap;
+	QCD::WilsonKernelsStatic::Opt   = Cases[c].Opt;
+	CartesianCommunicator::SetCommunicatorPolicy(Cases[c].CommsAsynch);
+
+	std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+	if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptGeneric   ) std::cout << GridLogMessage<< "* Using GENERIC Nc WilsonKernels" <<std::endl;
+	if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptHandUnroll) std::cout << GridLogMessage<< "* Using Nc=3       WilsonKernels" <<std::endl;
+	if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptInlineAsm ) std::cout << GridLogMessage<< "* Using Asm Nc=3   WilsonKernels" <<std::endl;
+	if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsAndCompute ) std::cout << GridLogMessage<< "* Using Overlapped Comms/Compute" <<std::endl;
+	if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsThenCompute) std::cout << GridLogMessage<< "* Using sequential comms compute" <<std::endl;
+	if ( sizeof(Real)==4 )   std::cout << GridLogMessage<< "* SINGLE precision "<<std::endl;
+	if ( sizeof(Real)==8 )   std::cout << GridLogMessage<< "* DOUBLE precision "<<std::endl;
+	std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+	int nwarm = 200;
+	double t0=usecond();
+	FGrid->Barrier();
+	for(int i=0;i<nwarm;i++){
+	  Dw.DhopEO(src_o,r_e,DaggerNo);
+	}
+	FGrid->Barrier();
+	double t1=usecond();
+	//	uint64_t ncall = (uint64_t) 2.5*1000.0*1000.0*nwarm/(t1-t0);
+	//	if (ncall < 500) ncall = 500;
+	uint64_t ncall = 1000;
+
+	FGrid->Broadcast(0,&ncall,sizeof(ncall));
+
+	//	std::cout << GridLogMessage << " Estimate " << ncall << " calls per second"<<std::endl;
+	Dw.ZeroCounters();
+
+	time_statistics timestat;
+	std::vector<double> t_time(ncall);
+	for(uint64_t i=0;i<ncall;i++){
+	  t0=usecond();
+	  Dw.DhopEO(src_o,r_e,DaggerNo);
+	  t1=usecond();
+	  t_time[i] = t1-t0;
+	}
+	FGrid->Barrier();
+	
+	double volume=Ls;  for(int mu=0;mu<Nd;mu++) volume=volume*latt4[mu];
+	double flops=(1344.0*volume)/2;
+	double mf_hi, mf_lo, mf_err;
+
+	timestat.statistics(t_time);
+	mf_hi = flops/timestat.min;
+	mf_lo = flops/timestat.max;
+	mf_err= flops/timestat.min * timestat.err/timestat.mean;
+
+	mflops = flops/timestat.mean;
+	mflops_all.push_back(mflops);
+	if ( mflops_best == 0   ) mflops_best = mflops;
+	if ( mflops_worst== 0   ) mflops_worst= mflops;
+	if ( mflops>mflops_best ) mflops_best = mflops;
+	if ( mflops<mflops_worst) mflops_worst= mflops;
+
+	std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"Deo mflop/s =   "<< mflops << " ("<<mf_err<<") " << mf_lo<<"-"<<mf_hi <<std::endl;
+	std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"Deo mflop/s per rank   "<< mflops/NP<<std::endl;
+	std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"Deo mflop/s per node   "<< mflops/NN<<std::endl;
+
+	Dw.Report();
+
+	Dw.DhopEO(src_o,r_e,DaggerNo);
+	Dw.DhopOE(src_e,r_o,DaggerNo);
+	setCheckerboard(r_eo,r_o);
+	setCheckerboard(r_eo,r_e);
+	err = r_eo-ref; 
+	std::cout<<GridLogMessage << "norm diff   "<< norm2(err)<<std::endl;
+	assert((norm2(err)<1.0e-4));
+
+      }
+      robust = mflops_worst/mflops_best;
+      std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+      std::cout<<GridLogMessage << L<<"^4 x "<<Ls<< " Deo Best  mflop/s        =   "<< mflops_best << " ; " << mflops_best/NN<<" per node " <<std::endl;
+      std::cout<<GridLogMessage << L<<"^4 x "<<Ls<< " Deo Worst mflop/s        =   "<< mflops_worst<< " ; " << mflops_worst/NN<<" per node " <<std::endl;
+      std::cout<<GridLogMessage << std::fixed<<std::setprecision(3)<< L<<"^4 x "<<Ls<< " Performance Robustness   =   "<< robust  <<std::endl;
+      std::cout<<GridLogMessage <<fmt << std::endl;
+      std::cout<<GridLogMessage ;
+
+      for(int i=0;i<mflops_all.size();i++){
+	std::cout<<mflops_all[i]/NN<<" ; " ;
+      }
+      std::cout<<std::endl;
+      std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+    }
+    return mflops_best;
+  }
+
+};
+
+int main (int argc, char ** argv)
+{
+  Grid_init(&argc,&argv);
+
+  CartesianCommunicator::SetCommunicatorPolicy(CartesianCommunicator::CommunicatorPolicySequential);
+#ifdef KNL
+  LebesgueOrder::Block = std::vector<int>({8,2,2,2});
+#else
+  LebesgueOrder::Block = std::vector<int>({2,2,2,2});
+#endif
+  Benchmark::Decomposition();
+
+  int do_memory=1;
+  int do_comms =1;
+  int do_su3   =0;
+  int do_wilson=1;
+  int do_dwf   =1;
+
+  if ( do_su3 ) {
+    // empty for now
+  }
+
+  int sel=2;
+  std::vector<int> L_list({8,12,16,24});
+
+  //int sel=1;
+  //  std::vector<int> L_list({8,12});
+  std::vector<double> robust_list;
+
+  std::vector<double> wilson;
+  std::vector<double> dwf4;
+  std::vector<double> dwf5;
+
+  if ( do_wilson ) {
+    int Ls=1;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << " Wilson dslash 4D vectorised" <<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    for(int l=0;l<L_list.size();l++){
+      double robust;
+      wilson.push_back(Benchmark::DWF(1,L_list[l],robust));
+    }
+  }
+
+  int Ls=16;
+  if ( do_dwf ) {
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << " Domain wall dslash 4D vectorised" <<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    for(int l=0;l<L_list.size();l++){
+      double robust;
+      double result = Benchmark::DWF(Ls,L_list[l],robust) ;
+      dwf4.push_back(result);
+      robust_list.push_back(robust);
+    }
+  }
+
+  if ( do_dwf ) {
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << " Domain wall dslash 4D vectorised" <<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    for(int l=0;l<L_list.size();l++){
+      dwf5.push_back(Benchmark::DWF5(Ls,L_list[l]));
+    }
+
+  }
+
+  if ( do_dwf ) {
+
+  std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << " Summary table Ls="<<Ls <<std::endl;
+  std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "L \t\t Wilson \t DWF4 \t DWF5 " <<std::endl;
+  for(int l=0;l<L_list.size();l++){
+    std::cout<<GridLogMessage << L_list[l] <<" \t\t "<< wilson[l]<<" \t "<<dwf4[l]<<" \t "<<dwf5[l] <<std::endl;
+  }
+  std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+  }
+
+  int NN=NN_global;
+  if ( do_memory ) {
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << " Memory benchmark " <<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    Benchmark::Memory();
+  }
+
+  if ( do_comms && (NN>1) ) {
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    std::cout<<GridLogMessage << " Communications benchmark " <<std::endl;
+    std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+    Benchmark::Comms();
+  }
+
+  if ( do_dwf ) {
+  std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << " Per Node Summary table Ls="<<Ls <<std::endl;
+  std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << " L \t\t Wilson\t\t DWF4  \t\t DWF5 " <<std::endl;
+  for(int l=0;l<L_list.size();l++){
+    std::cout<<GridLogMessage << L_list[l] <<" \t\t "<< wilson[l]/NN<<" \t "<<dwf4[l]/NN<<" \t "<<dwf5[l] /NN<<std::endl;
+  }
+  std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+  std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << " Comparison point     result: "  << dwf4[sel]/NN << " Mflop/s per node"<<std::endl;
+  std::cout<<std::setprecision(3);
+  std::cout<<GridLogMessage << " Comparison point robustness: "  << robust_list[sel] <<std::endl;
+  std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
+
+  }
+
+
+  Grid_finalize();
+}

benchmarks/Benchmark_comms.cc

@@ -31,6 +31,32 @@ using namespace std;
 using namespace Grid;
 using namespace Grid::QCD;
 
+struct time_statistics{
+  double mean;
+  double err;
+  double min;
+  double max;
+
+  void statistics(std::vector<double> v){
+      double sum = std::accumulate(v.begin(), v.end(), 0.0);
+      mean = sum / v.size();
+
+      std::vector<double> diff(v.size());
+      std::transform(v.begin(), v.end(), diff.begin(), [=](double x) { return x - mean; });
+      double sq_sum = std::inner_product(diff.begin(), diff.end(), diff.begin(), 0.0);
+      err = std::sqrt(sq_sum / (v.size()*(v.size() - 1)));
+
+      auto result = std::minmax_element(v.begin(), v.end());
+      min = *result.first;
+      max = *result.second;
+}
+};
+
+void header(){
+  std::cout <<GridLogMessage << " L  "<<"\t"<<" Ls  "<<"\t"
+            <<std::setw(11)<<"bytes"<<"MB/s uni (err/min/max)"<<"\t\t"<<"MB/s bidi (err/min/max)"<<std::endl;
+};
+
 int main (int argc, char ** argv)
 {
   Grid_init(&argc,&argv);
@@ -40,17 +66,21 @@ int main (int argc, char ** argv)
   int threads = GridThread::GetThreads();
   std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
 
-  int Nloop=10;
+  int Nloop=100;
   int nmu=0;
+  int maxlat=32;
   for(int mu=0;mu<Nd;mu++) if (mpi_layout[mu]>1) nmu++;
 
+  std::cout << GridLogMessage << "Number of iterations to average: "<< Nloop << std::endl;
+  std::vector<double> t_time(Nloop);
+  time_statistics timestat;
+
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
   std::cout<<GridLogMessage << "= Benchmarking concurrent halo exchange in "<<nmu<<" dimensions"<<std::endl;
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
-  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<" Ls  "<<"\t\t"<<"bytes"<<"\t\t"<<"MB/s uni"<<"\t\t"<<"MB/s bidi"<<std::endl;
-  int maxlat=24;
+  header();
   for(int lat=4;lat<=maxlat;lat+=4){
-    for(int Ls=8;Ls<=32;Ls*=2){
+    for(int Ls=8;Ls<=8;Ls*=2){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],
       				    lat*mpi_layout[1],
@@ -58,15 +88,23 @@ int main (int argc, char ** argv)
       				    lat*mpi_layout[3]});
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      RealD Nrank = Grid._Nprocessors;
+      RealD Nnode = Grid.NodeCount();
+      RealD ppn = Nrank/Nnode;
 
-      std::vector<std::vector<HalfSpinColourVectorD> > xbuf(8,std::vector<HalfSpinColourVectorD>(lat*lat*lat*Ls));
-      std::vector<std::vector<HalfSpinColourVectorD> > rbuf(8,std::vector<HalfSpinColourVectorD>(lat*lat*lat*Ls));
+      std::vector<Vector<HalfSpinColourVectorD> > xbuf(8);	
+      std::vector<Vector<HalfSpinColourVectorD> > rbuf(8);
 
       int ncomm;
       int bytes=lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD);
+      for(int mu=0;mu<8;mu++){
+	xbuf[mu].resize(lat*lat*lat*Ls);
+	rbuf[mu].resize(lat*lat*lat*Ls);
+	//	std::cout << " buffers " << std::hex << (uint64_t)&xbuf[mu][0] <<" " << (uint64_t)&rbuf[mu][0] <<std::endl;
+      }
 
-      double start=usecond();
       for(int i=0;i<Nloop;i++){
+      double start=usecond();
 
 	std::vector<CartesianCommunicator::CommsRequest_t> requests;
 
@@ -79,7 +117,6 @@ int main (int argc, char ** argv)
 	    int comm_proc=1;
 	    int xmit_to_rank;
 	    int recv_from_rank;
-	    
 	    Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
 	    Grid.SendToRecvFromBegin(requests,
 				   (void *)&xbuf[mu][0],
@@ -102,18 +139,24 @@ int main (int argc, char ** argv)
 	}
 	Grid.SendToRecvFromComplete(requests);
 	Grid.Barrier();
-
+	double stop=usecond();
+	t_time[i] = stop-start; // microseconds
       }
-      double stop=usecond();
 
-      double dbytes    = bytes;
-      double xbytes    = Nloop*dbytes*2.0*ncomm;
+      timestat.statistics(t_time);
+
+      double dbytes    = bytes*ppn;
+      double xbytes    = dbytes*2.0*ncomm;
       double rbytes    = xbytes;
       double bidibytes = xbytes+rbytes;
 
-      double time = stop-start; // microseconds
+      std::cout<<GridLogMessage << std::setw(4) << lat<<"\t"<<Ls<<"\t"
+               <<std::setw(11) << bytes<< std::fixed << std::setprecision(1) << std::setw(7)
+               <<std::right<< xbytes/timestat.mean<<"  "<< xbytes*timestat.err/(timestat.mean*timestat.mean)<< " "
+               <<xbytes/timestat.max <<" "<< xbytes/timestat.min  
+               << "\t\t"<<std::setw(7)<< bidibytes/timestat.mean<< "  " << bidibytes*timestat.err/(timestat.mean*timestat.mean) << " "
+               << bidibytes/timestat.max << " " << bidibytes/timestat.min << std::endl;
 
-      std::cout<<GridLogMessage << lat<<"\t\t"<<Ls<<"\t\t"<<bytes<<"\t\t"<<xbytes/time<<"\t\t"<<bidibytes/time<<std::endl;
     }
   }    
 
@@ -121,25 +164,32 @@ int main (int argc, char ** argv)
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
   std::cout<<GridLogMessage << "= Benchmarking sequential halo exchange in "<<nmu<<" dimensions"<<std::endl;
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
-  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<" Ls  "<<"\t\t"<<"bytes"<<"\t\t"<<"MB/s uni"<<"\t\t"<<"MB/s bidi"<<std::endl;
-
+  header();
 
   for(int lat=4;lat<=maxlat;lat+=4){
-    for(int Ls=8;Ls<=32;Ls*=2){
+    for(int Ls=8;Ls<=8;Ls*=2){
 
       std::vector<int> latt_size  ({lat,lat,lat,lat});
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      RealD Nrank = Grid._Nprocessors;
+      RealD Nnode = Grid.NodeCount();
+      RealD ppn = Nrank/Nnode;
 
-      std::vector<std::vector<HalfSpinColourVectorD> > xbuf(8,std::vector<HalfSpinColourVectorD>(lat*lat*lat*Ls));
-      std::vector<std::vector<HalfSpinColourVectorD> > rbuf(8,std::vector<HalfSpinColourVectorD>(lat*lat*lat*Ls));
+      std::vector<Vector<HalfSpinColourVectorD> > xbuf(8);
+      std::vector<Vector<HalfSpinColourVectorD> > rbuf(8);
 
+      for(int mu=0;mu<8;mu++){
+	xbuf[mu].resize(lat*lat*lat*Ls);
+	rbuf[mu].resize(lat*lat*lat*Ls);
+	//	std::cout << " buffers " << std::hex << (uint64_t)&xbuf[mu][0] <<" " << (uint64_t)&rbuf[mu][0] <<std::endl;
+      }
 
       int ncomm;
       int bytes=lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD);
 
-      double start=usecond();
       for(int i=0;i<Nloop;i++){
+      double start=usecond();
     
 	ncomm=0;
 	for(int mu=0;mu<4;mu++){
@@ -178,30 +228,37 @@ int main (int argc, char ** argv)
 	  }
 	}
 	Grid.Barrier();
+	double stop=usecond();
+	t_time[i] = stop-start; // microseconds
+
       }
 
-      double stop=usecond();
+      timestat.statistics(t_time);
       
-      double dbytes    = bytes;
-      double xbytes    = Nloop*dbytes*2.0*ncomm;
+      double dbytes    = bytes*ppn;
+      double xbytes    = dbytes*2.0*ncomm;
       double rbytes    = xbytes;
       double bidibytes = xbytes+rbytes;
 
-      double time = stop-start;
+    std::cout<<GridLogMessage << std::setw(4) << lat<<"\t"<<Ls<<"\t"
+               <<std::setw(11) << bytes<< std::fixed << std::setprecision(1) << std::setw(7)
+               <<std::right<< xbytes/timestat.mean<<"  "<< xbytes*timestat.err/(timestat.mean*timestat.mean)<< " "
+               <<xbytes/timestat.max <<" "<< xbytes/timestat.min  
+               << "\t\t"<<std::setw(7)<< bidibytes/timestat.mean<< "  " << bidibytes*timestat.err/(timestat.mean*timestat.mean) << " "
+               << bidibytes/timestat.max << " " << bidibytes/timestat.min << std::endl;
 
-      std::cout<<GridLogMessage << lat<<"\t\t"<<Ls<<"\t\t"<<bytes<<"\t\t"<<xbytes/time<<"\t\t"<<bidibytes/time<<std::endl;
+      
     }
   }  
 
 
-  Nloop=10;
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
   std::cout<<GridLogMessage << "= Benchmarking concurrent STENCIL halo exchange in "<<nmu<<" dimensions"<<std::endl;
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
-  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<" Ls  "<<"\t\t"<<"bytes"<<"\t\t"<<"MB/s uni"<<"\t\t"<<"MB/s bidi"<<std::endl;
+  header();
 
   for(int lat=4;lat<=maxlat;lat+=4){
-    for(int Ls=8;Ls<=32;Ls*=2){
+    for(int Ls=8;Ls<=8;Ls*=2){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],
       				    lat*mpi_layout[1],
@@ -209,6 +266,9 @@ int main (int argc, char ** argv)
       				    lat*mpi_layout[3]});
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      RealD Nrank = Grid._Nprocessors;
+      RealD Nnode = Grid.NodeCount();
+      RealD ppn = Nrank/Nnode;
 
       std::vector<HalfSpinColourVectorD *> xbuf(8);
       std::vector<HalfSpinColourVectorD *> rbuf(8);
@@ -216,73 +276,86 @@ int main (int argc, char ** argv)
       for(int d=0;d<8;d++){
 	xbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
 	rbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	bzero((void *)xbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	bzero((void *)rbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
       }
 
       int ncomm;
       int bytes=lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD);
 
-      double start=usecond();
+      double dbytes;
       for(int i=0;i<Nloop;i++){
+	double start=usecond();
+
+	dbytes=0;
+	ncomm=0;
 
 	std::vector<CartesianCommunicator::CommsRequest_t> requests;
 
-	ncomm=0;
 	for(int mu=0;mu<4;mu++){
 	
+
 	  if (mpi_layout[mu]>1 ) {
 	  
 	    ncomm++;
 	    int comm_proc=1;
 	    int xmit_to_rank;
 	    int recv_from_rank;
-	    
 	    Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
-	    Grid.StencilSendToRecvFromBegin(requests,
-					    (void *)&xbuf[mu][0],
-					    xmit_to_rank,
-					    (void *)&rbuf[mu][0],
-					    recv_from_rank,
-					    bytes);
+	    dbytes+=
+	      Grid.StencilSendToRecvFromBegin(requests,
+					      (void *)&xbuf[mu][0],
+					      xmit_to_rank,
+					      (void *)&rbuf[mu][0],
+					      recv_from_rank,
+					      bytes,mu);
 	
 	    comm_proc = mpi_layout[mu]-1;
 	  
 	    Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
-	    Grid.StencilSendToRecvFromBegin(requests,
-					    (void *)&xbuf[mu+4][0],
-					    xmit_to_rank,
-					    (void *)&rbuf[mu+4][0],
-					    recv_from_rank,
-					    bytes);
+	    dbytes+=
+	      Grid.StencilSendToRecvFromBegin(requests,
+					      (void *)&xbuf[mu+4][0],
+					      xmit_to_rank,
+					      (void *)&rbuf[mu+4][0],
+					      recv_from_rank,
+					      bytes,mu+4);
 	  
 	  }
 	}
-	Grid.StencilSendToRecvFromComplete(requests);
+	Grid.StencilSendToRecvFromComplete(requests,0);
 	Grid.Barrier();
-
+	double stop=usecond();
+	t_time[i] = stop-start; // microseconds
+	
       }
-      double stop=usecond();
 
-      double dbytes    = bytes;
-      double xbytes    = Nloop*dbytes*2.0*ncomm;
-      double rbytes    = xbytes;
-      double bidibytes = xbytes+rbytes;
+      timestat.statistics(t_time);
+
+      dbytes=dbytes*ppn;
+      double xbytes    = dbytes*0.5;
+      double rbytes    = dbytes*0.5;
+      double bidibytes = dbytes;
+
+      std::cout<<GridLogMessage << std::setw(4) << lat<<"\t"<<Ls<<"\t"
+               <<std::setw(11) << bytes<< std::fixed << std::setprecision(1) << std::setw(7)
+               <<std::right<< xbytes/timestat.mean<<"  "<< xbytes*timestat.err/(timestat.mean*timestat.mean)<< " "
+               <<xbytes/timestat.max <<" "<< xbytes/timestat.min  
+               << "\t\t"<<std::setw(7)<< bidibytes/timestat.mean<< "  " << bidibytes*timestat.err/(timestat.mean*timestat.mean) << " "
+               << bidibytes/timestat.max << " " << bidibytes/timestat.min << std::endl;
 
-      double time = stop-start; // microseconds
 
-      std::cout<<GridLogMessage << lat<<"\t\t"<<Ls<<"\t\t"<<bytes<<"\t\t"<<xbytes/time<<"\t\t"<<bidibytes/time<<std::endl;
     }
   }    
 
 
-
-  Nloop=100;
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
   std::cout<<GridLogMessage << "= Benchmarking sequential STENCIL halo exchange in "<<nmu<<" dimensions"<<std::endl;
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
-  std::cout<<GridLogMessage << "  L  "<<"\t\t"<<" Ls  "<<"\t\t"<<"bytes"<<"\t\t"<<"MB/s uni"<<"\t\t"<<"MB/s bidi"<<std::endl;
+  header();
 
   for(int lat=4;lat<=maxlat;lat+=4){
-    for(int Ls=8;Ls<=32;Ls*=2){
+    for(int Ls=8;Ls<=8;Ls*=2){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],
       				    lat*mpi_layout[1],
@@ -290,6 +363,9 @@ int main (int argc, char ** argv)
       				    lat*mpi_layout[3]});
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      RealD Nrank = Grid._Nprocessors;
+      RealD Nnode = Grid.NodeCount();
+      RealD ppn = Nrank/Nnode;
 
       std::vector<HalfSpinColourVectorD *> xbuf(8);
       std::vector<HalfSpinColourVectorD *> rbuf(8);
@@ -297,16 +373,18 @@ int main (int argc, char ** argv)
       for(int d=0;d<8;d++){
 	xbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
 	rbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	bzero((void *)xbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	bzero((void *)rbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
       }
 
       int ncomm;
       int bytes=lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD);
-
-      double start=usecond();
+      double dbytes;
       for(int i=0;i<Nloop;i++){
+	double start=usecond();
 
 	std::vector<CartesianCommunicator::CommsRequest_t> requests;
-
+	dbytes=0;
 	ncomm=0;
 	for(int mu=0;mu<4;mu++){
 	
@@ -318,44 +396,146 @@ int main (int argc, char ** argv)
 	    int recv_from_rank;
 	    
 	    Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
-	    Grid.StencilSendToRecvFromBegin(requests,
-					    (void *)&xbuf[mu][0],
-					    xmit_to_rank,
-					    (void *)&rbuf[mu][0],
-					    recv_from_rank,
-					    bytes);
-	    Grid.StencilSendToRecvFromComplete(requests);
+	    dbytes+=
+	      Grid.StencilSendToRecvFromBegin(requests,
+					      (void *)&xbuf[mu][0],
+					      xmit_to_rank,
+					      (void *)&rbuf[mu][0],
+					      recv_from_rank,
+					      bytes,mu);
+	    Grid.StencilSendToRecvFromComplete(requests,mu);
 	    requests.resize(0);
 
 	    comm_proc = mpi_layout[mu]-1;
 	  
 	    Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
-	    Grid.StencilSendToRecvFromBegin(requests,
-					    (void *)&xbuf[mu+4][0],
-					    xmit_to_rank,
-					    (void *)&rbuf[mu+4][0],
-					    recv_from_rank,
-					    bytes);
-	    Grid.StencilSendToRecvFromComplete(requests);
+	    dbytes+=
+	      Grid.StencilSendToRecvFromBegin(requests,
+					      (void *)&xbuf[mu+4][0],
+					      xmit_to_rank,
+					      (void *)&rbuf[mu+4][0],
+					      recv_from_rank,
+					      bytes,mu+4);
+	    Grid.StencilSendToRecvFromComplete(requests,mu+4);
 	    requests.resize(0);
 	  
 	  }
 	}
 	Grid.Barrier();
-
+	double stop=usecond();
+	t_time[i] = stop-start; // microseconds
+	
       }
-      double stop=usecond();
 
-      double dbytes    = bytes;
-      double xbytes    = Nloop*dbytes*2.0*ncomm;
-      double rbytes    = xbytes;
-      double bidibytes = xbytes+rbytes;
+      timestat.statistics(t_time);
 
-      double time = stop-start; // microseconds
+      dbytes=dbytes*ppn;
+      double xbytes    = dbytes*0.5;
+      double rbytes    = dbytes*0.5;
+      double bidibytes = dbytes;
 
-      std::cout<<GridLogMessage << lat<<"\t\t"<<Ls<<"\t\t"<<bytes<<"\t\t"<<xbytes/time<<"\t\t"<<bidibytes/time<<std::endl;
+
+      std::cout<<GridLogMessage << std::setw(4) << lat<<"\t"<<Ls<<"\t"
+               <<std::setw(11) << bytes<< std::fixed << std::setprecision(1) << std::setw(7)
+               <<std::right<< xbytes/timestat.mean<<"  "<< xbytes*timestat.err/(timestat.mean*timestat.mean)<< " "
+               <<xbytes/timestat.max <<" "<< xbytes/timestat.min  
+               << "\t\t"<<std::setw(7)<< bidibytes/timestat.mean<< "  " << bidibytes*timestat.err/(timestat.mean*timestat.mean) << " "
+               << bidibytes/timestat.max << " " << bidibytes/timestat.min << std::endl;
+ 
     }
   }    
 
+
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= Benchmarking threaded STENCIL halo exchange in "<<nmu<<" dimensions"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  header();
+
+  for(int lat=4;lat<=maxlat;lat+=4){
+    for(int Ls=8;Ls<=8;Ls*=2){
+
+      std::vector<int> latt_size  ({lat*mpi_layout[0],
+      				    lat*mpi_layout[1],
+      				    lat*mpi_layout[2],
+      				    lat*mpi_layout[3]});
+
+      GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
+      RealD Nrank = Grid._Nprocessors;
+      RealD Nnode = Grid.NodeCount();
+      RealD ppn = Nrank/Nnode;
+
+      std::vector<HalfSpinColourVectorD *> xbuf(8);
+      std::vector<HalfSpinColourVectorD *> rbuf(8);
+      Grid.ShmBufferFreeAll();
+      for(int d=0;d<8;d++){
+	xbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	rbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	bzero((void *)xbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+	bzero((void *)rbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
+      }
+
+      int ncomm;
+      int bytes=lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD);
+      double dbytes;
+      for(int i=0;i<Nloop;i++){
+	double start=usecond();
+
+	std::vector<CartesianCommunicator::CommsRequest_t> requests;
+	dbytes=0;
+	ncomm=0;
+
+	parallel_for(int dir=0;dir<8;dir++){
+
+	  double tbytes;
+	  int mu =dir % 4;
+
+	  if (mpi_layout[mu]>1 ) {
+	  
+	    ncomm++;
+	    int xmit_to_rank;
+	    int recv_from_rank;
+	    if ( dir == mu ) { 
+	      int comm_proc=1;
+	      Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
+	    } else { 
+	      int comm_proc = mpi_layout[mu]-1;
+	      Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
+	    }
+
+	    tbytes= Grid.StencilSendToRecvFrom((void *)&xbuf[dir][0], xmit_to_rank,
+					       (void *)&rbuf[dir][0], recv_from_rank, bytes,dir);
+
+#pragma omp atomic
+	    dbytes+=tbytes;
+	  }
+	}
+	Grid.Barrier();
+	double stop=usecond();
+	t_time[i] = stop-start; // microseconds
+      }
+
+      timestat.statistics(t_time);
+
+      dbytes=dbytes*ppn;
+      double xbytes    = dbytes*0.5;
+      double rbytes    = dbytes*0.5;
+      double bidibytes = dbytes;
+
+
+      std::cout<<GridLogMessage << std::setw(4) << lat<<"\t"<<Ls<<"\t"
+               <<std::setw(11) << bytes<< std::fixed << std::setprecision(1) << std::setw(7)
+               <<std::right<< xbytes/timestat.mean<<"  "<< xbytes*timestat.err/(timestat.mean*timestat.mean)<< " "
+               <<xbytes/timestat.max <<" "<< xbytes/timestat.min  
+               << "\t\t"<<std::setw(7)<< bidibytes/timestat.mean<< "  " << bidibytes*timestat.err/(timestat.mean*timestat.mean) << " "
+               << bidibytes/timestat.max << " " << bidibytes/timestat.min << std::endl;
+ 
+    }
+  }    
+
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+  std::cout<<GridLogMessage << "= All done; Bye Bye"<<std::endl;
+  std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
+
   Grid_finalize();
 }

benchmarks/Benchmark_dwf.cc

@@ -165,7 +165,7 @@ int main (int argc, char ** argv)
   std::cout << GridLogMessage<< "*****************************************************************" <<std::endl;
 
   DomainWallFermionR Dw(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
-  int ncall =1000;
+  int ncall =500;
   if (1) {
     FGrid->Barrier();
     Dw.ZeroCounters();
@@ -302,6 +302,7 @@ int main (int argc, char ** argv)
       std::cout<< "sD ERR   \n " << err  <<std::endl;
     }
     assert(sum < 1.0e-4);
+
     
     if(1){
       std::cout << GridLogMessage<< "*********************************************************" <<std::endl;
@@ -381,8 +382,23 @@ int main (int argc, char ** argv)
       }
       assert(error<1.0e-4);
     }
+
+  if(0){
+    std::cout << "Single cache warm call to sDw.Dhop " <<std::endl;
+    for(int i=0;i< PerformanceCounter::NumTypes(); i++ ){
+      sDw.Dhop(ssrc,sresult,0);
+      PerformanceCounter Counter(i);
+      Counter.Start();
+      sDw.Dhop(ssrc,sresult,0);
+      Counter.Stop();
+      Counter.Report();
+    }
   }
 
+  }
+
+
+
   if (1)
   { // Naive wilson dag implementation
     ref = zero;
@@ -487,9 +503,9 @@ int main (int argc, char ** argv)
   std::cout<<GridLogMessage << "norm diff even  "<< norm2(src_e)<<std::endl;
   std::cout<<GridLogMessage << "norm diff odd   "<< norm2(src_o)<<std::endl;
 
-  //assert(norm2(src_e)<1.0e-4);
-  //assert(norm2(src_o)<1.0e-4);
-
+  assert(norm2(src_e)<1.0e-4);
+  assert(norm2(src_o)<1.0e-4);
   Grid_finalize();
+  exit(0);
 }
 

benchmarks/Benchmark_memory_bandwidth.cc

@@ -55,21 +55,21 @@ int main (int argc, char ** argv)
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
   std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s"<<"\t\t"<<"Gflop/s"<<"\t\t seconds"<<std::endl;
   std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
-  uint64_t lmax=44;
-#define NLOOP (1*lmax*lmax*lmax*lmax/vol)
-  for(int lat=4;lat<=lmax;lat+=4){
+  uint64_t lmax=96;
+#define NLOOP (10*lmax*lmax*lmax*lmax/vol)
+  for(int lat=8;lat<=lmax;lat+=8){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
-      int vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      int64_t vol= latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
 
       uint64_t Nloop=NLOOP;
 
-      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
+      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
 
-      LatticeVec z(&Grid); //random(pRNG,z);
-      LatticeVec x(&Grid); //random(pRNG,x);
-      LatticeVec y(&Grid); //random(pRNG,y);
+      LatticeVec z(&Grid);// random(pRNG,z);
+      LatticeVec x(&Grid);// random(pRNG,x);
+      LatticeVec y(&Grid);// random(pRNG,y);
       double a=2.0;
 
 
@@ -83,7 +83,7 @@ int main (int argc, char ** argv)
       double time = (stop-start)/Nloop*1000;
       
       double flops=vol*Nvec*2;// mul,add
-      double bytes=3*vol*Nvec*sizeof(Real);
+      double bytes=3.0*vol*Nvec*sizeof(Real);
       std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<"   \t\t"<<bytes/time<<"\t\t"<<flops/time<<"\t\t"<<(stop-start)/1000./1000.<<std::endl;
 
     }
@@ -94,17 +94,17 @@ int main (int argc, char ** argv)
   std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s"<<"\t\t"<<"Gflop/s"<<"\t\t seconds"<<std::endl;
   std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
   
-  for(int lat=4;lat<=lmax;lat+=4){
+  for(int lat=8;lat<=lmax;lat+=8){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
-      int vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      int64_t vol= latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
 
-      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
+      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
 
-      LatticeVec z(&Grid); //random(pRNG,z);
-      LatticeVec x(&Grid); //random(pRNG,x);
-      LatticeVec y(&Grid); //random(pRNG,y);
+      LatticeVec z(&Grid);// random(pRNG,z);
+      LatticeVec x(&Grid);// random(pRNG,x);
+      LatticeVec y(&Grid);// random(pRNG,y);
       double a=2.0;
 
       uint64_t Nloop=NLOOP;
@@ -119,7 +119,7 @@ int main (int argc, char ** argv)
       double time = (stop-start)/Nloop*1000;
      
       double flops=vol*Nvec*2;// mul,add
-      double bytes=3*vol*Nvec*sizeof(Real);
+      double bytes=3.0*vol*Nvec*sizeof(Real);
       std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<"   \t\t"<<bytes/time<<"\t\t"<<flops/time<<"\t\t"<<(stop-start)/1000./1000.<<std::endl;
 
     }
@@ -129,20 +129,20 @@ int main (int argc, char ** argv)
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
   std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s"<<"\t\t"<<"Gflop/s"<<"\t\t seconds"<<std::endl;
 
-  for(int lat=4;lat<=lmax;lat+=4){
+  for(int lat=8;lat<=lmax;lat+=8){
 
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
-      int vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      int64_t vol= latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
       uint64_t Nloop=NLOOP;
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
 
-      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
+      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
 
-      LatticeVec z(&Grid); //random(pRNG,z);
-      LatticeVec x(&Grid); //random(pRNG,x);
-      LatticeVec y(&Grid); //random(pRNG,y);
+      LatticeVec z(&Grid);// random(pRNG,z);
+      LatticeVec x(&Grid);// random(pRNG,x);
+      LatticeVec y(&Grid);// random(pRNG,y);
       RealD a=2.0;
 
 
@@ -154,7 +154,7 @@ int main (int argc, char ** argv)
       double stop=usecond();
       double time = (stop-start)/Nloop*1000;
       
-      double bytes=2*vol*Nvec*sizeof(Real);
+      double bytes=2.0*vol*Nvec*sizeof(Real);
       double flops=vol*Nvec*1;// mul
       std::cout<<GridLogMessage <<std::setprecision(3) << lat<<"\t\t"<<bytes<<"   \t\t"<<bytes/time<<"\t\t"<<flops/time<<"\t\t"<<(stop-start)/1000./1000.<<std::endl;
 
@@ -166,17 +166,17 @@ int main (int argc, char ** argv)
   std::cout<<GridLogMessage << "  L  "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s"<<"\t\t"<<"Gflop/s"<<"\t\t seconds"<<std::endl;
   std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
 
-  for(int lat=4;lat<=lmax;lat+=4){
+  for(int lat=8;lat<=lmax;lat+=8){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
-      int vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      int64_t vol= latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
       uint64_t Nloop=NLOOP;
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
 
-      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
-      LatticeVec z(&Grid); //random(pRNG,z);
-      LatticeVec x(&Grid); //random(pRNG,x);
-      LatticeVec y(&Grid); //random(pRNG,y);
+      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
+      LatticeVec z(&Grid);// random(pRNG,z);
+      LatticeVec x(&Grid);// random(pRNG,x);
+      LatticeVec y(&Grid);// random(pRNG,y);
       RealD a=2.0;
       Real nn;      
       double start=usecond();
@@ -187,7 +187,7 @@ int main (int argc, char ** argv)
       double stop=usecond();
       double time = (stop-start)/Nloop*1000;
       
-      double bytes=vol*Nvec*sizeof(Real);
+      double bytes=1.0*vol*Nvec*sizeof(Real);
       double flops=vol*Nvec*2;// mul,add
       std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<"  \t\t"<<bytes/time<<"\t\t"<<flops/time<< "\t\t"<<(stop-start)/1000./1000.<< "\t\t " <<std::endl;
 

benchmarks/Benchmark_su3.cc

@@ -35,14 +35,14 @@ using namespace Grid::QCD;
 int main (int argc, char ** argv)
 {
   Grid_init(&argc,&argv);
-#define LMAX (32)
+#define LMAX (64)
 
-  int Nloop=200;
+  int64_t Nloop=20;
 
   std::vector<int> simd_layout = GridDefaultSimd(Nd,vComplex::Nsimd());
   std::vector<int> mpi_layout  = GridDefaultMpi();
 
-  int threads = GridThread::GetThreads();
+  int64_t threads = GridThread::GetThreads();
   std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
 
   std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
@@ -54,16 +54,16 @@ int main (int argc, char ** argv)
   for(int lat=2;lat<=LMAX;lat+=2){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
-      int vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
-      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
 
-      LatticeColourMatrix z(&Grid);// random(pRNG,z);
-      LatticeColourMatrix x(&Grid);// random(pRNG,x);
-      LatticeColourMatrix y(&Grid);// random(pRNG,y);
+      LatticeColourMatrix z(&Grid); random(pRNG,z);
+      LatticeColourMatrix x(&Grid); random(pRNG,x);
+      LatticeColourMatrix y(&Grid); random(pRNG,y);
 
       double start=usecond();
-      for(int i=0;i<Nloop;i++){
+      for(int64_t i=0;i<Nloop;i++){
 	x=x*y;
       }
       double stop=usecond();
@@ -86,17 +86,17 @@ int main (int argc, char ** argv)
   for(int lat=2;lat<=LMAX;lat+=2){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
-      int vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
-      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
 
-      LatticeColourMatrix z(&Grid); //random(pRNG,z);
-      LatticeColourMatrix x(&Grid); //random(pRNG,x);
-      LatticeColourMatrix y(&Grid); //random(pRNG,y);
+      LatticeColourMatrix z(&Grid); random(pRNG,z);
+      LatticeColourMatrix x(&Grid); random(pRNG,x);
+      LatticeColourMatrix y(&Grid); random(pRNG,y);
 
       double start=usecond();
-      for(int i=0;i<Nloop;i++){
+      for(int64_t i=0;i<Nloop;i++){
 	z=x*y;
       }
       double stop=usecond();
@@ -117,17 +117,17 @@ int main (int argc, char ** argv)
   for(int lat=2;lat<=LMAX;lat+=2){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
-      int vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
-      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
 
-      LatticeColourMatrix z(&Grid); //random(pRNG,z);
-      LatticeColourMatrix x(&Grid); //random(pRNG,x);
-      LatticeColourMatrix y(&Grid); //random(pRNG,y);
+      LatticeColourMatrix z(&Grid); random(pRNG,z);
+      LatticeColourMatrix x(&Grid); random(pRNG,x);
+      LatticeColourMatrix y(&Grid); random(pRNG,y);
 
       double start=usecond();
-      for(int i=0;i<Nloop;i++){
+      for(int64_t i=0;i<Nloop;i++){
 	mult(z,x,y);
       }
       double stop=usecond();
@@ -148,17 +148,17 @@ int main (int argc, char ** argv)
   for(int lat=2;lat<=LMAX;lat+=2){
 
       std::vector<int> latt_size  ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
-      int vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
+      int64_t vol = latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
 
       GridCartesian     Grid(latt_size,simd_layout,mpi_layout);
-      //      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9});
+      GridParallelRNG          pRNG(&Grid);      pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
 
-      LatticeColourMatrix z(&Grid); //random(pRNG,z);
-      LatticeColourMatrix x(&Grid); //random(pRNG,x);
-      LatticeColourMatrix y(&Grid); //random(pRNG,y);
+      LatticeColourMatrix z(&Grid); random(pRNG,z);
+      LatticeColourMatrix x(&Grid); random(pRNG,x);
+      LatticeColourMatrix y(&Grid); random(pRNG,y);
 
       double start=usecond();
-      for(int i=0;i<Nloop;i++){
+      for(int64_t i=0;i<Nloop;i++){
 	mac(z,x,y);
       }
       double stop=usecond();

bootstrap.sh

@@ -1,4 +1,4 @@
-]#!/usr/bin/env bash
+#!/usr/bin/env bash
 
 EIGEN_URL='http://bitbucket.org/eigen/eigen/get/3.3.3.tar.bz2'
 

configure.ac

@@ -13,6 +13,10 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 ################ Get git info
 #AC_REVISION([m4_esyscmd_s([./scripts/configure.commit])])
 
+################ Set flags
+# do not move!
+CXXFLAGS="-O3 $CXXFLAGS"
+
 ############### Checks for programs
 AC_PROG_CXX
 AC_PROG_RANLIB
@@ -27,7 +31,6 @@ AX_GXX_VERSION
 AC_DEFINE_UNQUOTED([GXX_VERSION],["$GXX_VERSION"],
       [version of g++ that will compile the code])
 
-CXXFLAGS="-O3 $CXXFLAGS"
 
 
 ############### Checks for typedefs, structures, and compiler characteristics
@@ -51,9 +54,14 @@ AC_CHECK_HEADERS(malloc/malloc.h)
 AC_CHECK_HEADERS(malloc.h)
 AC_CHECK_HEADERS(endian.h)
 AC_CHECK_HEADERS(execinfo.h)
+AC_CHECK_HEADERS(numaif.h)
 AC_CHECK_DECLS([ntohll],[], [], [[#include <arpa/inet.h>]])
 AC_CHECK_DECLS([be64toh],[], [], [[#include <arpa/inet.h>]])
 
+############## Standard libraries
+AC_CHECK_LIB([m],[cos])
+AC_CHECK_LIB([stdc++],[abort])
+
 ############### GMP and MPFR
 AC_ARG_WITH([gmp],
     [AS_HELP_STRING([--with-gmp=prefix],
@@ -184,6 +192,15 @@ AC_SEARCH_LIBS([limeCreateReader], [lime],
 In order to use ILGG file format please install or provide the correct path to your installation
 Info at: http://usqcd.jlab.org/usqcd-docs/c-lime/)])
 
+AC_SEARCH_LIBS([crc32], [z],
+               [AC_DEFINE([HAVE_ZLIB], [1], [Define to 1 if you have the `LIBZ' library])]
+               [have_zlib=true] [LIBS="${LIBS} -lz"],
+	       [AC_MSG_ERROR(zlib library was not found in your system.)])
+
+AC_SEARCH_LIBS([move_pages], [numa],
+               [AC_DEFINE([HAVE_LIBNUMA], [1], [Define to 1 if you have the `LIBNUMA' library])]
+               [have_libnuma=true] [LIBS="${LIBS} -lnuma"],
+	       [AC_MSG_WARN(libnuma library was not found in your system. Some optimisations will not apply)])
 
 AC_SEARCH_LIBS([H5Fopen], [hdf5_cpp],
                [AC_DEFINE([HAVE_HDF5], [1], [Define to 1 if you have the `HDF5' library])]
@@ -237,6 +254,7 @@ case ${ax_cv_cxx_compiler_vendor} in
         SIMD_FLAGS='';;
       KNL)
         AC_DEFINE([AVX512],[1],[AVX512 intrinsics])
+        AC_DEFINE([KNL],[1],[Knights landing processor])
         SIMD_FLAGS='-march=knl';;
       GEN)
         AC_DEFINE([GEN],[1],[generic vector code])
@@ -244,6 +262,9 @@ case ${ax_cv_cxx_compiler_vendor} in
                            [generic SIMD vector width (in bytes)])
         SIMD_GEN_WIDTH_MSG=" (width= $ac_gen_simd_width)"
         SIMD_FLAGS='';;
+      NEONv8)
+        AC_DEFINE([NEONV8],[1],[ARMv8 NEON])
+        SIMD_FLAGS='-march=armv8-a';;
       QPX|BGQ)
         AC_DEFINE([QPX],[1],[QPX intrinsics for BG/Q])
         SIMD_FLAGS='';;
@@ -272,6 +293,7 @@ case ${ax_cv_cxx_compiler_vendor} in
         SIMD_FLAGS='';;
       KNL)
         AC_DEFINE([AVX512],[1],[AVX512 intrinsics for Knights Landing])
+        AC_DEFINE([KNL],[1],[Knights landing processor])
         SIMD_FLAGS='-xmic-avx512';;
       GEN)
         AC_DEFINE([GEN],[1],[generic vector code])
@@ -309,8 +331,41 @@ case ${ac_PRECISION} in
      double)
        AC_DEFINE([GRID_DEFAULT_PRECISION_DOUBLE],[1],[GRID_DEFAULT_PRECISION is DOUBLE] )
      ;;
+     *)
+     AC_MSG_ERROR([${ac_PRECISION} unsupported --enable-precision option]);
+     ;;
 esac
 
+######################  Shared memory allocation technique under MPI3
+AC_ARG_ENABLE([shm],[AC_HELP_STRING([--enable-shm=shmget|shmopen|hugetlbfs],
+              [Select SHM allocation technique])],[ac_SHM=${enable_shm}],[ac_SHM=shmopen])
+
+case ${ac_SHM} in
+
+     shmget)
+     AC_DEFINE([GRID_MPI3_SHMGET],[1],[GRID_MPI3_SHMGET] )
+     ;;
+
+     shmopen)
+     AC_DEFINE([GRID_MPI3_SHMOPEN],[1],[GRID_MPI3_SHMOPEN] )
+     ;;
+
+     hugetlbfs)
+     AC_DEFINE([GRID_MPI3_SHMMMAP],[1],[GRID_MPI3_SHMMMAP] )
+     ;;
+
+     *)
+     AC_MSG_ERROR([${ac_SHM} unsupported --enable-shm option]);
+     ;;
+esac
+
+######################  Shared base path for SHMMMAP
+AC_ARG_ENABLE([shmpath],[AC_HELP_STRING([--enable-shmpath=path],
+              [Select SHM mmap base path for hugetlbfs])],
+	      [ac_SHMPATH=${enable_shmpath}],
+	      [ac_SHMPATH=/var/lib/hugetlbfs/pagesize-2MB/])
+AC_DEFINE_UNQUOTED([GRID_SHM_PATH],["$ac_SHMPATH"],[Path to a hugetlbfs filesystem for MMAPing])
+
 ############### communication type selection
 AC_ARG_ENABLE([comms],[AC_HELP_STRING([--enable-comms=none|mpi|mpi-auto|mpi3|mpi3-auto|shmem],
               [Select communications])],[ac_COMMS=${enable_comms}],[ac_COMMS=none])
@@ -320,14 +375,14 @@ case ${ac_COMMS} in
         AC_DEFINE([GRID_COMMS_NONE],[1],[GRID_COMMS_NONE] )
         comms_type='none'
      ;;
-     mpi3l*)
-       AC_DEFINE([GRID_COMMS_MPI3L],[1],[GRID_COMMS_MPI3L] )
-       comms_type='mpi3l'
-     ;;
      mpi3*)
         AC_DEFINE([GRID_COMMS_MPI3],[1],[GRID_COMMS_MPI3] )
         comms_type='mpi3'
      ;;
+     mpit)
+        AC_DEFINE([GRID_COMMS_MPIT],[1],[GRID_COMMS_MPIT] )
+        comms_type='mpit'
+     ;;
      mpi*)
         AC_DEFINE([GRID_COMMS_MPI],[1],[GRID_COMMS_MPI] )
         comms_type='mpi'
@@ -355,7 +410,7 @@ esac
 AM_CONDITIONAL(BUILD_COMMS_SHMEM, [ test "${comms_type}X" == "shmemX" ])
 AM_CONDITIONAL(BUILD_COMMS_MPI,   [ test "${comms_type}X" == "mpiX" ])
 AM_CONDITIONAL(BUILD_COMMS_MPI3,  [ test "${comms_type}X" == "mpi3X" ] )
-AM_CONDITIONAL(BUILD_COMMS_MPI3L, [ test "${comms_type}X" == "mpi3lX" ] )
+AM_CONDITIONAL(BUILD_COMMS_MPIT,  [ test "${comms_type}X" == "mpitX" ] )
 AM_CONDITIONAL(BUILD_COMMS_NONE,  [ test "${comms_type}X" == "noneX" ])
 
 ############### RNG selection
@@ -460,6 +515,8 @@ compiler version            : ${ax_cv_gxx_version}
 SIMD                        : ${ac_SIMD}${SIMD_GEN_WIDTH_MSG}
 Threading                   : ${ac_openmp}
 Communications type         : ${comms_type}
+Shared memory allocator     : ${ac_SHM}
+Shared memory mmap path     : ${ac_SHMPATH}
 Default precision           : ${ac_PRECISION}
 Software FP16 conversion    : ${ac_SFW_FP16}
 RNG choice                  : ${ac_RNG}

extras/Hadrons/Environment.cc

@@ -41,9 +41,10 @@ using namespace Hadrons;
 // constructor /////////////////////////////////////////////////////////////////
 Environment::Environment(void)
 {
-    nd_ = GridDefaultLatt().size();
+    dim_ = GridDefaultLatt();
+    nd_  = dim_.size();
     grid4d_.reset(SpaceTimeGrid::makeFourDimGrid(
-        GridDefaultLatt(), GridDefaultSimd(nd_, vComplex::Nsimd()),
+        dim_, GridDefaultSimd(nd_, vComplex::Nsimd()),
         GridDefaultMpi()));
     gridRb4d_.reset(SpaceTimeGrid::makeFourDimRedBlackGrid(grid4d_.get()));
     auto loc = getGrid()->LocalDimensions();
@@ -132,6 +133,16 @@ unsigned int Environment::getNd(void) const
     return nd_;
 }
 
+std::vector<int> Environment::getDim(void) const
+{
+    return dim_;
+}
+
+int Environment::getDim(const unsigned int mu) const
+{
+    return dim_[mu];
+}
+
 // random number generator /////////////////////////////////////////////////////
 void Environment::setSeed(const std::vector<int> &seed)
 {
@@ -271,6 +282,21 @@ std::string Environment::getModuleType(const std::string name) const
     return getModuleType(getModuleAddress(name));
 }
 
+std::string Environment::getModuleNamespace(const unsigned int address) const
+{
+    std::string type = getModuleType(address), ns;
+    
+    auto pos2 = type.rfind("::");
+    auto pos1 = type.rfind("::", pos2 - 2);
+    
+    return type.substr(pos1 + 2, pos2 - pos1 - 2);
+}
+
+std::string Environment::getModuleNamespace(const std::string name) const
+{
+    return getModuleNamespace(getModuleAddress(name));
+}
+
 bool Environment::hasModule(const unsigned int address) const
 {
     return (address < module_.size());
@@ -492,7 +518,14 @@ std::string Environment::getObjectType(const unsigned int address) const
 {
     if (hasRegisteredObject(address))
     {
-        return typeName(object_[address].type);
+        if (object_[address].type)
+        {
+            return typeName(object_[address].type);
+        }
+        else
+        {
+            return "<no type>";
+        }
     }
     else if (hasObject(address))
     {
@@ -532,6 +565,23 @@ Environment::Size Environment::getObjectSize(const std::string name) const
     return getObjectSize(getObjectAddress(name));
 }
 
+unsigned int Environment::getObjectModule(const unsigned int address) const
+{
+    if (hasObject(address))
+    {
+        return object_[address].module;
+    }
+    else
+    {
+        HADRON_ERROR("no object with address " + std::to_string(address));
+    }
+}
+
+unsigned int Environment::getObjectModule(const std::string name) const
+{
+    return getObjectModule(getObjectAddress(name));
+}
+
 unsigned int Environment::getObjectLs(const unsigned int address) const
 {
     if (hasRegisteredObject(address))

extras/Hadrons/Environment.hpp

@@ -106,6 +106,8 @@ public:
     void                    createGrid(const unsigned int Ls);
     GridCartesian *         getGrid(const unsigned int Ls = 1) const;
     GridRedBlackCartesian * getRbGrid(const unsigned int Ls = 1) const;
+    std::vector<int>        getDim(void) const;
+    int                     getDim(const unsigned int mu) const;
     unsigned int            getNd(void) const;
     // random number generator
     void                    setSeed(const std::vector<int> &seed);
@@ -131,6 +133,8 @@ public:
     std::string             getModuleName(const unsigned int address) const;
     std::string             getModuleType(const unsigned int address) const;
     std::string             getModuleType(const std::string name) const;
+    std::string             getModuleNamespace(const unsigned int address) const;
+    std::string             getModuleNamespace(const std::string name) const;
     bool                    hasModule(const unsigned int address) const;
     bool                    hasModule(const std::string name) const;
     Graph<unsigned int>     makeModuleGraph(void) const;
@@ -171,6 +175,8 @@ public:
     std::string             getObjectType(const std::string name) const;
     Size                    getObjectSize(const unsigned int address) const;
     Size                    getObjectSize(const std::string name) const;
+    unsigned int            getObjectModule(const unsigned int address) const;
+    unsigned int            getObjectModule(const std::string name) const;
     unsigned int            getObjectLs(const unsigned int address) const;
     unsigned int            getObjectLs(const std::string name) const;
     bool                    hasObject(const unsigned int address) const;
@@ -181,6 +187,10 @@ public:
     bool                    hasCreatedObject(const std::string name) const;
     bool                    isObject5d(const unsigned int address) const;
     bool                    isObject5d(const std::string name) const;
+    template <typename T>
+    bool                    isObjectOfType(const unsigned int address) const;
+    template <typename T>
+    bool                    isObjectOfType(const std::string name) const;
     Environment::Size       getTotalSize(void) const;
     void                    addOwnership(const unsigned int owner,
                                          const unsigned int property);
@@ -197,6 +207,7 @@ private:
     bool                                   dryRun_{false};
     unsigned int                           traj_, locVol_;
     // grids
+    std::vector<int>                       dim_;
     GridPt                                 grid4d_;
     std::map<unsigned int, GridPt>         grid5d_;
     GridRbPt                               gridRb4d_;
@@ -343,7 +354,7 @@ T * Environment::getObject(const unsigned int address) const
         else
         {
             HADRON_ERROR("object with address " + std::to_string(address) +
-                         " does not have type '" + typeid(T).name() +
+                         " does not have type '" + typeName(&typeid(T)) +
                          "' (has type '" + getObjectType(address) + "')");
         }
     }
@@ -380,6 +391,37 @@ T * Environment::createLattice(const std::string name)
     return createLattice<T>(getObjectAddress(name));
 }
 
+template <typename T>
+bool Environment::isObjectOfType(const unsigned int address) const
+{
+    if (hasRegisteredObject(address))
+    {
+        if (auto h = dynamic_cast<Holder<T> *>(object_[address].data.get()))
+        {
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+    else if (hasObject(address))
+    {
+        HADRON_ERROR("object with address " + std::to_string(address) +
+                     " exists but is not registered");
+    }
+    else
+    {
+        HADRON_ERROR("no object with address " + std::to_string(address));
+    }
+}
+
+template <typename T>
+bool Environment::isObjectOfType(const std::string name) const
+{
+    return isObjectOfType<T>(getObjectAddress(name));
+}
+
 END_HADRONS_NAMESPACE
 
 #endif // Hadrons_Environment_hpp_

extras/Hadrons/Global.hpp

@@ -51,23 +51,43 @@ using Grid::operator<<;
  * error with GCC 5 (clang & GCC 6 compile fine without it).
  */
 
-// FIXME: find a way to do that in a more general fashion
 #ifndef FIMPL
 #define FIMPL WilsonImplR
 #endif
+#ifndef SIMPL
+#define SIMPL ScalarImplCR
+#endif
 
 BEGIN_HADRONS_NAMESPACE
 
 // type aliases
-#define TYPE_ALIASES(FImpl, suffix)\
+#define FERM_TYPE_ALIASES(FImpl, suffix)\
 typedef FermionOperator<FImpl>                       FMat##suffix;             \
 typedef typename FImpl::FermionField                 FermionField##suffix;     \
 typedef typename FImpl::PropagatorField              PropagatorField##suffix;  \
 typedef typename FImpl::SitePropagator               SitePropagator##suffix;   \
-typedef typename FImpl::DoubledGaugeField            DoubledGaugeField##suffix;\
-typedef std::function<void(FermionField##suffix &,                             \
+typedef std::vector<typename FImpl::SitePropagator::scalar_object>             \
+                                                     SlicedPropagator##suffix;
+
+#define GAUGE_TYPE_ALIASES(FImpl, suffix)\
+typedef typename FImpl::DoubledGaugeField DoubledGaugeField##suffix;
+
+#define SCALAR_TYPE_ALIASES(SImpl, suffix)\
+typedef typename SImpl::Field ScalarField##suffix;\
+typedef typename SImpl::Field PropagatorField##suffix;
+
+#define SOLVER_TYPE_ALIASES(FImpl, suffix)\
+typedef std::function<void(FermionField##suffix &,\
                       const FermionField##suffix &)> SolverFn##suffix;
 
+#define SINK_TYPE_ALIASES(suffix)\
+typedef std::function<SlicedPropagator##suffix(const PropagatorField##suffix &)> SinkFn##suffix;
+
+#define FGS_TYPE_ALIASES(FImpl, suffix)\
+FERM_TYPE_ALIASES(FImpl, suffix)\
+GAUGE_TYPE_ALIASES(FImpl, suffix)\
+SOLVER_TYPE_ALIASES(FImpl, suffix)
+
 // logger
 class HadronsLogger: public Logger
 {

extras/Hadrons/Modules.hpp

@@ -1,31 +1,3 @@
-/*************************************************************************************
-
-Grid physics library, www.github.com/paboyle/Grid 
-
-Source file: extras/Hadrons/Modules.hpp
-
-Copyright (C) 2015
-Copyright (C) 2016
-
-Author: Antonin Portelli <antonin.portelli@me.com>
-
-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/Hadrons/Modules/MAction/DWF.hpp>
 #include <Grid/Hadrons/Modules/MAction/Wilson.hpp>
 #include <Grid/Hadrons/Modules/MContraction/Baryon.hpp>
@@ -36,13 +8,18 @@ See the full license in the file "LICENSE" in the top level distribution directo
 #include <Grid/Hadrons/Modules/MContraction/WeakHamiltonianEye.hpp>
 #include <Grid/Hadrons/Modules/MContraction/WeakHamiltonianNonEye.hpp>
 #include <Grid/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.hpp>
+#include <Grid/Hadrons/Modules/MFermion/GaugeProp.hpp>
 #include <Grid/Hadrons/Modules/MGauge/Load.hpp>
 #include <Grid/Hadrons/Modules/MGauge/Random.hpp>
+#include <Grid/Hadrons/Modules/MGauge/StochEm.hpp>
 #include <Grid/Hadrons/Modules/MGauge/Unit.hpp>
 #include <Grid/Hadrons/Modules/MLoop/NoiseLoop.hpp>
+#include <Grid/Hadrons/Modules/MScalar/ChargedProp.hpp>
+#include <Grid/Hadrons/Modules/MScalar/FreeProp.hpp>
+#include <Grid/Hadrons/Modules/MScalar/Scalar.hpp>
+#include <Grid/Hadrons/Modules/MSink/Point.hpp>
 #include <Grid/Hadrons/Modules/MSolver/RBPrecCG.hpp>
 #include <Grid/Hadrons/Modules/MSource/Point.hpp>
 #include <Grid/Hadrons/Modules/MSource/SeqGamma.hpp>
 #include <Grid/Hadrons/Modules/MSource/Wall.hpp>
 #include <Grid/Hadrons/Modules/MSource/Z2.hpp>
-#include <Grid/Hadrons/Modules/Quark.hpp>

extras/Hadrons/Modules/MAction/DWF.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_DWF_hpp_
-#define Hadrons_DWF_hpp_
+#ifndef Hadrons_MAction_DWF_hpp_
+#define Hadrons_MAction_DWF_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -48,14 +48,15 @@ public:
                                     std::string, gauge,
                                     unsigned int, Ls,
                                     double      , mass,
-                                    double      , M5);
+                                    double      , M5,
+                                    std::string , boundary);
 };
 
 template <typename FImpl>
 class TDWF: public Module<DWFPar>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FGS_TYPE_ALIASES(FImpl,);
 public:
     // constructor
     TDWF(const std::string name);
@@ -116,14 +117,19 @@ void TDWF<FImpl>::execute(void)
                  << par().mass << ", M5= " << par().M5 << " and Ls= "
                  << par().Ls << " using gauge field '" << par().gauge << "'"
                  << std::endl;
+    LOG(Message) << "Fermion boundary conditions: " << par().boundary 
+                 << std::endl;
     env().createGrid(par().Ls);
     auto &U      = *env().template getObject<LatticeGaugeField>(par().gauge);
     auto &g4     = *env().getGrid();
     auto &grb4   = *env().getRbGrid();
     auto &g5     = *env().getGrid(par().Ls);
     auto &grb5   = *env().getRbGrid(par().Ls);
+    std::vector<Complex> boundary = strToVec<Complex>(par().boundary);
+    typename DomainWallFermion<FImpl>::ImplParams implParams(boundary);
     FMat *fMatPt = new DomainWallFermion<FImpl>(U, g5, grb5, g4, grb4,
-                                                par().mass, par().M5);
+                                                par().mass, par().M5,
+                                                implParams);
     env().setObject(getName(), fMatPt);
 }
 
@@ -131,4 +137,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_DWF_hpp_
+#endif // Hadrons_MAction_DWF_hpp_

extras/Hadrons/Modules/MAction/Wilson.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Wilson_hpp_
-#define Hadrons_Wilson_hpp_
+#ifndef Hadrons_MAction_Wilson_hpp_
+#define Hadrons_MAction_Wilson_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -46,14 +46,15 @@ class WilsonPar: Serializable
 public:
     GRID_SERIALIZABLE_CLASS_MEMBERS(WilsonPar,
                                     std::string, gauge,
-                                    double     , mass);
+                                    double     , mass,
+                                    std::string, boundary);
 };
 
 template <typename FImpl>
 class TWilson: public Module<WilsonPar>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FGS_TYPE_ALIASES(FImpl,);
 public:
     // constructor
     TWilson(const std::string name);
@@ -112,10 +113,15 @@ void TWilson<FImpl>::execute()
 {
     LOG(Message) << "Setting up TWilson fermion matrix with m= " << par().mass
                  << " using gauge field '" << par().gauge << "'" << std::endl;
+    LOG(Message) << "Fermion boundary conditions: " << par().boundary 
+                 << std::endl;
     auto &U      = *env().template getObject<LatticeGaugeField>(par().gauge);
     auto &grid   = *env().getGrid();
     auto &gridRb = *env().getRbGrid();
-    FMat *fMatPt = new WilsonFermion<FImpl>(U, grid, gridRb, par().mass);
+    std::vector<Complex> boundary = strToVec<Complex>(par().boundary);
+    typename WilsonFermion<FImpl>::ImplParams implParams(boundary);
+    FMat *fMatPt = new WilsonFermion<FImpl>(U, grid, gridRb, par().mass,
+                                            implParams);
     env().setObject(getName(), fMatPt);
 }
 

extras/Hadrons/Modules/MContraction/Baryon.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Baryon_hpp_
-#define Hadrons_Baryon_hpp_
+#ifndef Hadrons_MContraction_Baryon_hpp_
+#define Hadrons_MContraction_Baryon_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -55,9 +55,9 @@ template <typename FImpl1, typename FImpl2, typename FImpl3>
 class TBaryon: public Module<BaryonPar>
 {
 public:
-    TYPE_ALIASES(FImpl1, 1);
-    TYPE_ALIASES(FImpl2, 2);
-    TYPE_ALIASES(FImpl3, 3);
+    FERM_TYPE_ALIASES(FImpl1, 1);
+    FERM_TYPE_ALIASES(FImpl2, 2);
+    FERM_TYPE_ALIASES(FImpl3, 3);
     class Result: Serializable
     {
     public:
@@ -121,11 +121,11 @@ void TBaryon<FImpl1, FImpl2, FImpl3>::execute(void)
     
     // FIXME: do contractions
     
-    write(writer, "meson", result);
+    // write(writer, "meson", result);
 }
 
 END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Baryon_hpp_
+#endif // Hadrons_MContraction_Baryon_hpp_

extras/Hadrons/Modules/MContraction/DiscLoop.hpp

@@ -26,8 +26,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_DiscLoop_hpp_
-#define Hadrons_DiscLoop_hpp_
+#ifndef Hadrons_MContraction_DiscLoop_hpp_
+#define Hadrons_MContraction_DiscLoop_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -52,7 +52,7 @@ public:
 template <typename FImpl>
 class TDiscLoop: public Module<DiscLoopPar>
 {
-    TYPE_ALIASES(FImpl,);
+    FERM_TYPE_ALIASES(FImpl,);
     class Result: Serializable
     {
     public:
@@ -141,4 +141,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_DiscLoop_hpp_
+#endif // Hadrons_MContraction_DiscLoop_hpp_

extras/Hadrons/Modules/MContraction/Gamma3pt.hpp

@@ -26,8 +26,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Gamma3pt_hpp_
-#define Hadrons_Gamma3pt_hpp_
+#ifndef Hadrons_MContraction_Gamma3pt_hpp_
+#define Hadrons_MContraction_Gamma3pt_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -72,9 +72,9 @@ public:
 template <typename FImpl1, typename FImpl2, typename FImpl3>
 class TGamma3pt: public Module<Gamma3ptPar>
 {
-    TYPE_ALIASES(FImpl1, 1);
-    TYPE_ALIASES(FImpl2, 2);
-    TYPE_ALIASES(FImpl3, 3);
+    FERM_TYPE_ALIASES(FImpl1, 1);
+    FERM_TYPE_ALIASES(FImpl2, 2);
+    FERM_TYPE_ALIASES(FImpl3, 3);
     class Result: Serializable
     {
     public:
@@ -167,4 +167,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Gamma3pt_hpp_
+#endif // Hadrons_MContraction_Gamma3pt_hpp_

extras/Hadrons/Modules/MContraction/Meson.hpp

@@ -29,8 +29,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Meson_hpp_
-#define Hadrons_Meson_hpp_
+#ifndef Hadrons_MContraction_Meson_hpp_
+#define Hadrons_MContraction_Meson_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -69,7 +69,7 @@ public:
                                     std::string, q1,
                                     std::string, q2,
                                     std::string, gammas,
-                                    std::string, mom,
+                                    std::string, sink,
                                     std::string, output);
 };
 
@@ -77,8 +77,10 @@ template <typename FImpl1, typename FImpl2>
 class TMeson: public Module<MesonPar>
 {
 public:
-    TYPE_ALIASES(FImpl1, 1);
-    TYPE_ALIASES(FImpl2, 2);
+    FERM_TYPE_ALIASES(FImpl1, 1);
+    FERM_TYPE_ALIASES(FImpl2, 2);
+    FERM_TYPE_ALIASES(ScalarImplCR, Scalar);
+    SINK_TYPE_ALIASES(Scalar);
     class Result: Serializable
     {
     public:
@@ -115,7 +117,7 @@ TMeson<FImpl1, FImpl2>::TMeson(const std::string name)
 template <typename FImpl1, typename FImpl2>
 std::vector<std::string> TMeson<FImpl1, FImpl2>::getInput(void)
 {
-    std::vector<std::string> input = {par().q1, par().q2};
+    std::vector<std::string> input = {par().q1, par().q2, par().sink};
     
     return input;
 }
@@ -131,12 +133,11 @@ std::vector<std::string> TMeson<FImpl1, FImpl2>::getOutput(void)
 template <typename FImpl1, typename FImpl2>
 void TMeson<FImpl1, FImpl2>::parseGammaString(std::vector<GammaPair> &gammaList)
 {
+    gammaList.clear();
     // Determine gamma matrices to insert at source/sink.
     if (par().gammas.compare("all") == 0)
     {
         // Do all contractions.
-        unsigned int n_gam = Ns * Ns;
-        gammaList.resize(n_gam*n_gam);
         for (unsigned int i = 1; i < Gamma::nGamma; i += 2)
         {
             for (unsigned int j = 1; j < Gamma::nGamma; j += 2)
@@ -155,6 +156,9 @@ void TMeson<FImpl1, FImpl2>::parseGammaString(std::vector<GammaPair> &gammaList)
 
 
 // execution ///////////////////////////////////////////////////////////////////
+#define mesonConnected(q1, q2, gSnk, gSrc) \
+(g5*(gSnk))*(q1)*(adj(gSrc)*g5)*adj(q2)
+
 template <typename FImpl1, typename FImpl2>
 void TMeson<FImpl1, FImpl2>::execute(void)
 {
@@ -162,43 +166,72 @@ void TMeson<FImpl1, FImpl2>::execute(void)
                  << " quarks '" << par().q1 << "' and '" << par().q2 << "'"
                  << std::endl;
     
-    CorrWriter              writer(par().output);
-    PropagatorField1       &q1 = *env().template getObject<PropagatorField1>(par().q1);
-    PropagatorField2       &q2 = *env().template getObject<PropagatorField2>(par().q2);
-    LatticeComplex         c(env().getGrid());
-    Gamma                  g5(Gamma::Algebra::Gamma5);
-    std::vector<GammaPair> gammaList;
+    CorrWriter             writer(par().output);
     std::vector<TComplex>  buf;
     std::vector<Result>    result;
-    std::vector<Real>      p;
-
-    p  = strToVec<Real>(par().mom);
-    LatticeComplex         ph(env().getGrid()), coor(env().getGrid());
-    Complex                i(0.0,1.0);
-    ph = zero;
-    for(unsigned int mu = 0; mu < env().getNd(); mu++)
-    {
-        LatticeCoordinate(coor, mu);
-        ph = ph + p[mu]*coor*((1./(env().getGrid()->_fdimensions[mu])));
-    }
-    ph = exp((Real)(2*M_PI)*i*ph);
+    Gamma                  g5(Gamma::Algebra::Gamma5);
+    std::vector<GammaPair> gammaList;
+    int                    nt = env().getDim(Tp);
     
     parseGammaString(gammaList);
-
     result.resize(gammaList.size());
     for (unsigned int i = 0; i < result.size(); ++i)
     {
-        Gamma gSnk(gammaList[i].first);
-        Gamma gSrc(gammaList[i].second);
-        c = trace((g5*gSnk)*q1*(adj(gSrc)*g5)*adj(q2))*ph;
-        sliceSum(c, buf, Tp);
-
         result[i].gamma_snk = gammaList[i].first;
         result[i].gamma_src = gammaList[i].second;
-        result[i].corr.resize(buf.size());
-        for (unsigned int t = 0; t < buf.size(); ++t)
+        result[i].corr.resize(nt);
+    }
+    if (env().template isObjectOfType<SlicedPropagator1>(par().q1) and
+        env().template isObjectOfType<SlicedPropagator2>(par().q2))
+    {
+        SlicedPropagator1 &q1 = *env().template getObject<SlicedPropagator1>(par().q1);
+        SlicedPropagator2 &q2 = *env().template getObject<SlicedPropagator2>(par().q2);
+        
+        LOG(Message) << "(propagator already sinked)" << std::endl;
+        for (unsigned int i = 0; i < result.size(); ++i)
         {
-            result[i].corr[t] = TensorRemove(buf[t]);
+            Gamma gSnk(gammaList[i].first);
+            Gamma gSrc(gammaList[i].second);
+            
+            for (unsigned int t = 0; t < buf.size(); ++t)
+            {
+                result[i].corr[t] = TensorRemove(trace(mesonConnected(q1[t], q2[t], gSnk, gSrc)));
+            }
+        }
+    }
+    else
+    {
+        PropagatorField1 &q1   = *env().template getObject<PropagatorField1>(par().q1);
+        PropagatorField2 &q2   = *env().template getObject<PropagatorField2>(par().q2);
+        LatticeComplex   c(env().getGrid());
+        
+        LOG(Message) << "(using sink '" << par().sink << "')" << std::endl;
+        for (unsigned int i = 0; i < result.size(); ++i)
+        {
+            Gamma       gSnk(gammaList[i].first);
+            Gamma       gSrc(gammaList[i].second);
+            std::string ns;
+                
+            ns = env().getModuleNamespace(env().getObjectModule(par().sink));
+            if (ns == "MSource")
+            {
+                PropagatorField1 &sink =
+                    *env().template getObject<PropagatorField1>(par().sink);
+                
+                c = trace(mesonConnected(q1, q2, gSnk, gSrc)*sink);
+                sliceSum(c, buf, Tp);
+            }
+            else if (ns == "MSink")
+            {
+                SinkFnScalar &sink = *env().template getObject<SinkFnScalar>(par().sink);
+                
+                c   = trace(mesonConnected(q1, q2, gSnk, gSrc));
+                buf = sink(c);
+            }
+            for (unsigned int t = 0; t < buf.size(); ++t)
+            {
+                result[i].corr[t] = TensorRemove(buf[t]);
+            }
         }
     }
     write(writer, "meson", result);
@@ -208,4 +241,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Meson_hpp_
+#endif // Hadrons_MContraction_Meson_hpp_

extras/Hadrons/Modules/MContraction/WeakHamiltonian.hpp

@@ -26,8 +26,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_WeakHamiltonian_hpp_
-#define Hadrons_WeakHamiltonian_hpp_
+#ifndef Hadrons_MContraction_WeakHamiltonian_hpp_
+#define Hadrons_MContraction_WeakHamiltonian_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -83,7 +83,7 @@ public:
 class T##modname: public Module<WeakHamiltonianPar>\
 {\
 public:\
-    TYPE_ALIASES(FIMPL,)\
+    FERM_TYPE_ALIASES(FIMPL,)\
     class Result: Serializable\
     {\
     public:\
@@ -111,4 +111,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_WeakHamiltonian_hpp_
+#endif // Hadrons_MContraction_WeakHamiltonian_hpp_

extras/Hadrons/Modules/MContraction/WeakHamiltonianEye.hpp

@@ -26,8 +26,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_WeakHamiltonianEye_hpp_
-#define Hadrons_WeakHamiltonianEye_hpp_
+#ifndef Hadrons_MContraction_WeakHamiltonianEye_hpp_
+#define Hadrons_MContraction_WeakHamiltonianEye_hpp_
 
 #include <Grid/Hadrons/Modules/MContraction/WeakHamiltonian.hpp>
 
@@ -55,4 +55,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_WeakHamiltonianEye_hpp_
+#endif // Hadrons_MContraction_WeakHamiltonianEye_hpp_

extras/Hadrons/Modules/MContraction/WeakHamiltonianNonEye.hpp

@@ -26,8 +26,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_WeakHamiltonianNonEye_hpp_
-#define Hadrons_WeakHamiltonianNonEye_hpp_
+#ifndef Hadrons_MContraction_WeakHamiltonianNonEye_hpp_
+#define Hadrons_MContraction_WeakHamiltonianNonEye_hpp_
 
 #include <Grid/Hadrons/Modules/MContraction/WeakHamiltonian.hpp>
 
@@ -54,4 +54,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_WeakHamiltonianNonEye_hpp_
+#endif // Hadrons_MContraction_WeakHamiltonianNonEye_hpp_

extras/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.hpp

@@ -26,8 +26,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_WeakNeutral4ptDisc_hpp_
-#define Hadrons_WeakNeutral4ptDisc_hpp_
+#ifndef Hadrons_MContraction_WeakNeutral4ptDisc_hpp_
+#define Hadrons_MContraction_WeakNeutral4ptDisc_hpp_
 
 #include <Grid/Hadrons/Modules/MContraction/WeakHamiltonian.hpp>
 
@@ -56,4 +56,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_WeakNeutral4ptDisc_hpp_
+#endif // Hadrons_MContraction_WeakNeutral4ptDisc_hpp_

extras/Hadrons/Modules/MFermion/GaugeProp.hpp

@@ -1,34 +1,5 @@
-/*************************************************************************************
-
-Grid physics library, www.github.com/paboyle/Grid 
-
-Source file: extras/Hadrons/Modules/Quark.hpp
-
-Copyright (C) 2015
-Copyright (C) 2016
-
-Author: Antonin Portelli <antonin.portelli@me.com>
-
-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 Hadrons_Quark_hpp_
-#define Hadrons_Quark_hpp_
+#ifndef Hadrons_MFermion_GaugeProp_hpp_
+#define Hadrons_MFermion_GaugeProp_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -37,27 +8,29 @@ See the full license in the file "LICENSE" in the top level distribution directo
 BEGIN_HADRONS_NAMESPACE
 
 /******************************************************************************
- *                               TQuark                                       *
+ *                                GaugeProp                                   *
  ******************************************************************************/
-class QuarkPar: Serializable
+BEGIN_MODULE_NAMESPACE(MFermion)
+
+class GaugePropPar: Serializable
 {
 public:
-    GRID_SERIALIZABLE_CLASS_MEMBERS(QuarkPar,
+    GRID_SERIALIZABLE_CLASS_MEMBERS(GaugePropPar,
                                     std::string, source,
                                     std::string, solver);
 };
 
 template <typename FImpl>
-class TQuark: public Module<QuarkPar>
+class TGaugeProp: public Module<GaugePropPar>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FGS_TYPE_ALIASES(FImpl,);
 public:
     // constructor
-    TQuark(const std::string name);
+    TGaugeProp(const std::string name);
     // destructor
-    virtual ~TQuark(void) = default;
-    // dependencies/products
+    virtual ~TGaugeProp(void) = default;
+    // dependency relation
     virtual std::vector<std::string> getInput(void);
     virtual std::vector<std::string> getOutput(void);
     // setup
@@ -69,20 +42,20 @@ private:
     SolverFn     *solver_{nullptr};
 };
 
-MODULE_REGISTER(Quark, TQuark<FIMPL>);
+MODULE_REGISTER_NS(GaugeProp, TGaugeProp<FIMPL>, MFermion);
 
 /******************************************************************************
- *                          TQuark implementation                             *
+ *                      TGaugeProp implementation                             *
  ******************************************************************************/
 // constructor /////////////////////////////////////////////////////////////////
 template <typename FImpl>
-TQuark<FImpl>::TQuark(const std::string name)
-: Module(name)
+TGaugeProp<FImpl>::TGaugeProp(const std::string name)
+: Module<GaugePropPar>(name)
 {}
 
 // dependencies/products ///////////////////////////////////////////////////////
 template <typename FImpl>
-std::vector<std::string> TQuark<FImpl>::getInput(void)
+std::vector<std::string> TGaugeProp<FImpl>::getInput(void)
 {
     std::vector<std::string> in = {par().source, par().solver};
     
@@ -90,7 +63,7 @@ std::vector<std::string> TQuark<FImpl>::getInput(void)
 }
 
 template <typename FImpl>
-std::vector<std::string> TQuark<FImpl>::getOutput(void)
+std::vector<std::string> TGaugeProp<FImpl>::getOutput(void)
 {
     std::vector<std::string> out = {getName(), getName() + "_5d"};
     
@@ -99,7 +72,7 @@ std::vector<std::string> TQuark<FImpl>::getOutput(void)
 
 // setup ///////////////////////////////////////////////////////////////////////
 template <typename FImpl>
-void TQuark<FImpl>::setup(void)
+void TGaugeProp<FImpl>::setup(void)
 {
     Ls_ = env().getObjectLs(par().solver);
     env().template registerLattice<PropagatorField>(getName());
@@ -111,13 +84,13 @@ void TQuark<FImpl>::setup(void)
 
 // execution ///////////////////////////////////////////////////////////////////
 template <typename FImpl>
-void TQuark<FImpl>::execute(void)
+void TGaugeProp<FImpl>::execute(void)
 {
     LOG(Message) << "Computing quark propagator '" << getName() << "'"
-                 << std::endl;
+    << std::endl;
     
     FermionField    source(env().getGrid(Ls_)), sol(env().getGrid(Ls_)),
-                    tmp(env().getGrid());
+    tmp(env().getGrid());
     std::string     propName = (Ls_ == 1) ? getName() : (getName() + "_5d");
     PropagatorField &prop    = *env().template createLattice<PropagatorField>(propName);
     PropagatorField &fullSrc = *env().template getObject<PropagatorField>(par().source);
@@ -128,7 +101,7 @@ void TQuark<FImpl>::execute(void)
     }
     
     LOG(Message) << "Inverting using solver '" << par().solver
-                 << "' on source '" << par().source << "'" << std::endl;
+    << "' on source '" << par().source << "'" << std::endl;
     for (unsigned int s = 0; s < Ns; ++s)
     for (unsigned int c = 0; c < Nc; ++c)
     {
@@ -170,7 +143,7 @@ void TQuark<FImpl>::execute(void)
         if (Ls_ > 1)
         {
             PropagatorField &p4d =
-                *env().template getObject<PropagatorField>(getName());
+            *env().template getObject<PropagatorField>(getName());
             
             axpby_ssp_pminus(sol, 0., sol, 1., sol, 0, 0);
             axpby_ssp_pplus(sol, 1., sol, 1., sol, 0, Ls_-1);
@@ -180,6 +153,8 @@ void TQuark<FImpl>::execute(void)
     }
 }
 
+END_MODULE_NAMESPACE
+
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Quark_hpp_
+#endif // Hadrons_MFermion_GaugeProp_hpp_

extras/Hadrons/Modules/MGauge/Load.cc

@@ -65,7 +65,7 @@ void TLoad::setup(void)
 // execution ///////////////////////////////////////////////////////////////////
 void TLoad::execute(void)
 {
-    NerscField  header;
+    FieldMetaData  header;
     std::string fileName = par().file + "."
                            + std::to_string(env().getTrajectory());
     
@@ -74,5 +74,5 @@ void TLoad::execute(void)
     LatticeGaugeField &U = *env().createLattice<LatticeGaugeField>(getName());
     NerscIO::readConfiguration(U, header, fileName);
     LOG(Message) << "NERSC header:" << std::endl;
-    dump_nersc_header(header, LOG(Message));
+    dump_meta_data(header, LOG(Message));
 }

extras/Hadrons/Modules/MGauge/Load.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Load_hpp_
-#define Hadrons_Load_hpp_
+#ifndef Hadrons_MGauge_Load_hpp_
+#define Hadrons_MGauge_Load_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -70,4 +70,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Load_hpp_
+#endif // Hadrons_MGauge_Load_hpp_

extras/Hadrons/Modules/MGauge/Random.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Random_hpp_
-#define Hadrons_Random_hpp_
+#ifndef Hadrons_MGauge_Random_hpp_
+#define Hadrons_MGauge_Random_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -63,4 +63,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Random_hpp_
+#endif // Hadrons_MGauge_Random_hpp_

extras/Hadrons/Modules/MGauge/StochEm.cc

@@ -0,0 +1,88 @@
+/*************************************************************************************
+
+Grid physics library, www.github.com/paboyle/Grid 
+
+Source file: extras/Hadrons/Modules/MGauge/StochEm.cc
+
+Copyright (C) 2015
+Copyright (C) 2016
+
+
+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/Hadrons/Modules/MGauge/StochEm.hpp>
+
+using namespace Grid;
+using namespace Hadrons;
+using namespace MGauge;
+
+/******************************************************************************
+*                  TStochEm implementation                             *
+******************************************************************************/
+// constructor /////////////////////////////////////////////////////////////////
+TStochEm::TStochEm(const std::string name)
+: Module<StochEmPar>(name)
+{}
+
+// dependencies/products ///////////////////////////////////////////////////////
+std::vector<std::string> TStochEm::getInput(void)
+{
+    std::vector<std::string> in;
+    
+    return in;
+}
+
+std::vector<std::string> TStochEm::getOutput(void)
+{
+    std::vector<std::string> out = {getName()};
+    
+    return out;
+}
+
+// setup ///////////////////////////////////////////////////////////////////////
+void TStochEm::setup(void)
+{
+    if (!env().hasRegisteredObject("_" + getName() + "_weight"))
+    {
+        env().registerLattice<EmComp>("_" + getName() + "_weight");
+    }
+    env().registerLattice<EmField>(getName());
+}
+
+// execution ///////////////////////////////////////////////////////////////////
+void TStochEm::execute(void)
+{
+    PhotonR photon(par().gauge, par().zmScheme);
+    EmField &a = *env().createLattice<EmField>(getName());
+    EmComp  *w;
+    
+    if (!env().hasCreatedObject("_" + getName() + "_weight"))
+    {
+        LOG(Message) << "Caching stochatic EM potential weight (gauge: "
+                     << par().gauge << ", zero-mode scheme: "
+                     << par().zmScheme << ")..." << std::endl;
+        w = env().createLattice<EmComp>("_" + getName() + "_weight");
+        photon.StochasticWeight(*w);
+    }
+    else
+    {
+        w = env().getObject<EmComp>("_" + getName() + "_weight");
+    }
+    LOG(Message) << "Generating stochatic EM potential..." << std::endl;
+    photon.StochasticField(a, *env().get4dRng(), *w);
+}

extras/Hadrons/Modules/MGauge/StochEm.hpp

@@ -0,0 +1,75 @@
+/*************************************************************************************
+
+Grid physics library, www.github.com/paboyle/Grid 
+
+Source file: extras/Hadrons/Modules/MGauge/StochEm.hpp
+
+Copyright (C) 2015
+Copyright (C) 2016
+
+
+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 Hadrons_MGauge_StochEm_hpp_
+#define Hadrons_MGauge_StochEm_hpp_
+
+#include <Grid/Hadrons/Global.hpp>
+#include <Grid/Hadrons/Module.hpp>
+#include <Grid/Hadrons/ModuleFactory.hpp>
+
+BEGIN_HADRONS_NAMESPACE
+
+/******************************************************************************
+ *                         StochEm                                 *
+ ******************************************************************************/
+BEGIN_MODULE_NAMESPACE(MGauge)
+
+class StochEmPar: Serializable
+{
+public:
+    GRID_SERIALIZABLE_CLASS_MEMBERS(StochEmPar,
+                                    PhotonR::Gauge,    gauge,
+                                    PhotonR::ZmScheme, zmScheme);
+};
+
+class TStochEm: public Module<StochEmPar>
+{
+public:
+    typedef PhotonR::GaugeField     EmField;
+    typedef PhotonR::GaugeLinkField EmComp;
+public:
+    // constructor
+    TStochEm(const std::string name);
+    // destructor
+    virtual ~TStochEm(void) = default;
+    // dependency relation
+    virtual std::vector<std::string> getInput(void);
+    virtual std::vector<std::string> getOutput(void);
+    // setup
+    virtual void setup(void);
+    // execution
+    virtual void execute(void);
+};
+
+MODULE_REGISTER_NS(StochEm, TStochEm, MGauge);
+
+END_MODULE_NAMESPACE
+
+END_HADRONS_NAMESPACE
+
+#endif // Hadrons_MGauge_StochEm_hpp_

extras/Hadrons/Modules/MGauge/Unit.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Unit_hpp_
-#define Hadrons_Unit_hpp_
+#ifndef Hadrons_MGauge_Unit_hpp_
+#define Hadrons_MGauge_Unit_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -63,4 +63,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Unit_hpp_
+#endif // Hadrons_MGauge_Unit_hpp_

extras/Hadrons/Modules/MLoop/NoiseLoop.hpp

@@ -26,8 +26,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_NoiseLoop_hpp_
-#define Hadrons_NoiseLoop_hpp_
+#ifndef Hadrons_MLoop_NoiseLoop_hpp_
+#define Hadrons_MLoop_NoiseLoop_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -65,7 +65,7 @@ template <typename FImpl>
 class TNoiseLoop: public Module<NoiseLoopPar>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FERM_TYPE_ALIASES(FImpl,);
 public:
     // constructor
     TNoiseLoop(const std::string name);
@@ -129,4 +129,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_NoiseLoop_hpp_
+#endif // Hadrons_MLoop_NoiseLoop_hpp_

extras/Hadrons/Modules/MScalar/ChargedProp.cc

@@ -0,0 +1,226 @@
+#include <Grid/Hadrons/Modules/MScalar/ChargedProp.hpp>
+#include <Grid/Hadrons/Modules/MScalar/Scalar.hpp>
+
+using namespace Grid;
+using namespace Hadrons;
+using namespace MScalar;
+
+/******************************************************************************
+*                     TChargedProp implementation                             *
+******************************************************************************/
+// constructor /////////////////////////////////////////////////////////////////
+TChargedProp::TChargedProp(const std::string name)
+: Module<ChargedPropPar>(name)
+{}
+
+// dependencies/products ///////////////////////////////////////////////////////
+std::vector<std::string> TChargedProp::getInput(void)
+{
+    std::vector<std::string> in = {par().source, par().emField};
+    
+    return in;
+}
+
+std::vector<std::string> TChargedProp::getOutput(void)
+{
+    std::vector<std::string> out = {getName()};
+    
+    return out;
+}
+
+// setup ///////////////////////////////////////////////////////////////////////
+void TChargedProp::setup(void)
+{
+    freeMomPropName_ = FREEMOMPROP(par().mass);
+    phaseName_.clear();
+    for (unsigned int mu = 0; mu < env().getNd(); ++mu)
+    {
+        phaseName_.push_back("_shiftphase_" + std::to_string(mu));
+    }
+    GFSrcName_ = "_" + getName() + "_DinvSrc";
+    if (!env().hasRegisteredObject(freeMomPropName_))
+    {
+        env().registerLattice<ScalarField>(freeMomPropName_);
+    }
+    if (!env().hasRegisteredObject(phaseName_[0]))
+    {
+        for (unsigned int mu = 0; mu < env().getNd(); ++mu)
+        {
+            env().registerLattice<ScalarField>(phaseName_[mu]);
+        }
+    }
+    if (!env().hasRegisteredObject(GFSrcName_))
+    {
+        env().registerLattice<ScalarField>(GFSrcName_);
+    }
+    env().registerLattice<ScalarField>(getName());
+}
+
+// execution ///////////////////////////////////////////////////////////////////
+void TChargedProp::execute(void)
+{
+    // CACHING ANALYTIC EXPRESSIONS
+    ScalarField &source = *env().getObject<ScalarField>(par().source);
+    Complex     ci(0.0,1.0);
+    FFT         fft(env().getGrid());
+    
+    // cache free scalar propagator
+    if (!env().hasCreatedObject(freeMomPropName_))
+    {
+        LOG(Message) << "Caching momentum space free scalar propagator"
+                     << " (mass= " << par().mass << ")..." << std::endl;
+        freeMomProp_ = env().createLattice<ScalarField>(freeMomPropName_);
+        SIMPL::MomentumSpacePropagator(*freeMomProp_, par().mass);
+    }
+    else
+    {
+        freeMomProp_ = env().getObject<ScalarField>(freeMomPropName_);
+    }
+    // cache G*F*src
+    if (!env().hasCreatedObject(GFSrcName_))
+        
+    {
+        GFSrc_ = env().createLattice<ScalarField>(GFSrcName_);
+        fft.FFT_all_dim(*GFSrc_, source, FFT::forward);
+        *GFSrc_ = (*freeMomProp_)*(*GFSrc_);
+    }
+    else
+    {
+        GFSrc_ = env().getObject<ScalarField>(GFSrcName_);
+    }
+    // cache phases
+    if (!env().hasCreatedObject(phaseName_[0]))
+    {
+        std::vector<int> &l = env().getGrid()->_fdimensions;
+        
+        LOG(Message) << "Caching shift phases..." << std::endl;
+        for (unsigned int mu = 0; mu < env().getNd(); ++mu)
+        {
+            Real    twoPiL = M_PI*2./l[mu];
+            
+            phase_.push_back(env().createLattice<ScalarField>(phaseName_[mu]));
+            LatticeCoordinate(*(phase_[mu]), mu);
+            *(phase_[mu]) = exp(ci*twoPiL*(*(phase_[mu])));
+        }
+    }
+    else
+    {
+        for (unsigned int mu = 0; mu < env().getNd(); ++mu)
+        {
+            phase_.push_back(env().getObject<ScalarField>(phaseName_[mu]));
+        }
+    }
+
+    // PROPAGATOR CALCULATION
+    LOG(Message) << "Computing charged scalar propagator"
+                 << " (mass= " << par().mass
+                 << ", charge= " << par().charge << ")..." << std::endl;
+    
+    ScalarField &prop   = *env().createLattice<ScalarField>(getName());
+    ScalarField buf(env().getGrid());
+    ScalarField &GFSrc = *GFSrc_, &G = *freeMomProp_;
+    double      q = par().charge;
+    
+    // G*F*Src
+    prop = GFSrc;
+
+    // - q*G*momD1*G*F*Src (momD1 = F*D1*Finv)
+    buf = GFSrc;
+    momD1(buf, fft);
+    buf = G*buf;
+    prop = prop - q*buf;
+
+    // + q^2*G*momD1*G*momD1*G*F*Src (here buf = G*momD1*G*F*Src)
+    momD1(buf, fft);
+    prop = prop + q*q*G*buf;
+
+    // - q^2*G*momD2*G*F*Src (momD2 = F*D2*Finv)
+    buf = GFSrc;
+    momD2(buf, fft);
+    prop = prop - q*q*G*buf;
+
+    // final FT
+    fft.FFT_all_dim(prop, prop, FFT::backward);
+    
+    // OUTPUT IF NECESSARY
+    if (!par().output.empty())
+    {
+        std::string           filename = par().output + "." +
+                                         std::to_string(env().getTrajectory());
+        
+        LOG(Message) << "Saving zero-momentum projection to '"
+                     << filename << "'..." << std::endl;
+        
+        CorrWriter            writer(filename);
+        std::vector<TComplex> vecBuf;
+        std::vector<Complex>  result;
+        
+        sliceSum(prop, vecBuf, Tp);
+        result.resize(vecBuf.size());
+        for (unsigned int t = 0; t < vecBuf.size(); ++t)
+        {
+            result[t] = TensorRemove(vecBuf[t]);
+        }
+        write(writer, "charge", q);
+        write(writer, "prop", result);
+    }
+}
+
+void TChargedProp::momD1(ScalarField &s, FFT &fft)
+{
+    EmField     &A = *env().getObject<EmField>(par().emField);
+    ScalarField buf(env().getGrid()), result(env().getGrid()),
+                Amu(env().getGrid());
+    Complex     ci(0.0,1.0);
+
+    result = zero;
+
+    for (unsigned int mu = 0; mu < env().getNd(); ++mu)
+    {
+        Amu = peekLorentz(A, mu);
+        buf = (*phase_[mu])*s;
+        fft.FFT_all_dim(buf, buf, FFT::backward);
+        buf = Amu*buf;
+        fft.FFT_all_dim(buf, buf, FFT::forward);
+        result = result - ci*buf;
+    }
+    fft.FFT_all_dim(s, s, FFT::backward);
+    for (unsigned int mu = 0; mu < env().getNd(); ++mu)
+    {
+        Amu = peekLorentz(A, mu);
+        buf = Amu*s;
+        fft.FFT_all_dim(buf, buf, FFT::forward);
+        result = result + ci*adj(*phase_[mu])*buf;
+    }
+
+    s = result;
+}
+
+void TChargedProp::momD2(ScalarField &s, FFT &fft)
+{
+    EmField     &A = *env().getObject<EmField>(par().emField);
+    ScalarField buf(env().getGrid()), result(env().getGrid()),
+                Amu(env().getGrid());
+
+    result = zero;
+    
+    for (unsigned int mu = 0; mu < env().getNd(); ++mu)
+    {
+        Amu = peekLorentz(A, mu);
+        buf = (*phase_[mu])*s;
+        fft.FFT_all_dim(buf, buf, FFT::backward);
+        buf = Amu*Amu*buf;
+        fft.FFT_all_dim(buf, buf, FFT::forward);
+        result = result + .5*buf;
+    }
+    fft.FFT_all_dim(s, s, FFT::backward);
+    for (unsigned int mu = 0; mu < env().getNd(); ++mu)
+    {
+        Amu = peekLorentz(A, mu);        
+        buf = Amu*Amu*s;
+        fft.FFT_all_dim(buf, buf, FFT::forward);
+        result = result + .5*adj(*phase_[mu])*buf;
+    }
+
+    s = result;
+}

extras/Hadrons/Modules/MScalar/ChargedProp.hpp

@@ -0,0 +1,61 @@
+#ifndef Hadrons_MScalar_ChargedProp_hpp_
+#define Hadrons_MScalar_ChargedProp_hpp_
+
+#include <Grid/Hadrons/Global.hpp>
+#include <Grid/Hadrons/Module.hpp>
+#include <Grid/Hadrons/ModuleFactory.hpp>
+
+BEGIN_HADRONS_NAMESPACE
+
+/******************************************************************************
+ *                       Charged scalar propagator                            *
+ ******************************************************************************/
+BEGIN_MODULE_NAMESPACE(MScalar)
+
+class ChargedPropPar: Serializable
+{
+public:
+    GRID_SERIALIZABLE_CLASS_MEMBERS(ChargedPropPar,
+                                    std::string, emField,
+                                    std::string, source,
+                                    double,      mass,
+                                    double,      charge,
+                                    std::string, output);
+};
+
+class TChargedProp: public Module<ChargedPropPar>
+{
+public:
+    SCALAR_TYPE_ALIASES(SIMPL,);
+    typedef PhotonR::GaugeField     EmField;
+    typedef PhotonR::GaugeLinkField EmComp;
+public:
+    // constructor
+    TChargedProp(const std::string name);
+    // destructor
+    virtual ~TChargedProp(void) = default;
+    // dependency relation
+    virtual std::vector<std::string> getInput(void);
+    virtual std::vector<std::string> getOutput(void);
+    // setup
+    virtual void setup(void);
+    // execution
+    virtual void execute(void);
+private:
+    void momD1(ScalarField &s, FFT &fft);
+    void momD2(ScalarField &s, FFT &fft);
+private:
+    std::string                freeMomPropName_, GFSrcName_;
+    std::vector<std::string>   phaseName_;
+    ScalarField                *freeMomProp_, *GFSrc_;
+    std::vector<ScalarField *> phase_;
+    EmField                    *A;
+};
+
+MODULE_REGISTER_NS(ChargedProp, TChargedProp, MScalar);
+
+END_MODULE_NAMESPACE
+
+END_HADRONS_NAMESPACE
+
+#endif // Hadrons_MScalar_ChargedProp_hpp_

extras/Hadrons/Modules/MScalar/FreeProp.cc

@@ -0,0 +1,79 @@
+#include <Grid/Hadrons/Modules/MScalar/FreeProp.hpp>
+#include <Grid/Hadrons/Modules/MScalar/Scalar.hpp>
+
+using namespace Grid;
+using namespace Hadrons;
+using namespace MScalar;
+
+/******************************************************************************
+*                        TFreeProp implementation                             *
+******************************************************************************/
+// constructor /////////////////////////////////////////////////////////////////
+TFreeProp::TFreeProp(const std::string name)
+: Module<FreePropPar>(name)
+{}
+
+// dependencies/products ///////////////////////////////////////////////////////
+std::vector<std::string> TFreeProp::getInput(void)
+{
+    std::vector<std::string> in = {par().source};
+    
+    return in;
+}
+
+std::vector<std::string> TFreeProp::getOutput(void)
+{
+    std::vector<std::string> out = {getName()};
+    
+    return out;
+}
+
+// setup ///////////////////////////////////////////////////////////////////////
+void TFreeProp::setup(void)
+{
+    freeMomPropName_ = FREEMOMPROP(par().mass);
+    
+    if (!env().hasRegisteredObject(freeMomPropName_))
+    {
+        env().registerLattice<ScalarField>(freeMomPropName_);
+    }
+    env().registerLattice<ScalarField>(getName());
+}
+
+// execution ///////////////////////////////////////////////////////////////////
+void TFreeProp::execute(void)
+{
+    ScalarField &prop   = *env().createLattice<ScalarField>(getName());
+    ScalarField &source = *env().getObject<ScalarField>(par().source);
+    ScalarField *freeMomProp;
+
+    if (!env().hasCreatedObject(freeMomPropName_))
+    {
+        LOG(Message) << "Caching momentum space free scalar propagator"
+                     << " (mass= " << par().mass << ")..." << std::endl;
+        freeMomProp = env().createLattice<ScalarField>(freeMomPropName_);
+        SIMPL::MomentumSpacePropagator(*freeMomProp, par().mass);
+    }
+    else
+    {
+        freeMomProp = env().getObject<ScalarField>(freeMomPropName_);
+    }
+    LOG(Message) << "Computing free scalar propagator..." << std::endl;
+    SIMPL::FreePropagator(source, prop, *freeMomProp);
+    
+    if (!par().output.empty())
+    {
+        TextWriter            writer(par().output + "." +
+                                     std::to_string(env().getTrajectory()));
+        std::vector<TComplex> buf;
+        std::vector<Complex>  result;
+        
+        sliceSum(prop, buf, Tp);
+        result.resize(buf.size());
+        for (unsigned int t = 0; t < buf.size(); ++t)
+        {
+            result[t] = TensorRemove(buf[t]);
+        }
+        write(writer, "prop", result);
+    }
+}

extras/Hadrons/Modules/MScalar/FreeProp.hpp

@@ -0,0 +1,50 @@
+#ifndef Hadrons_MScalar_FreeProp_hpp_
+#define Hadrons_MScalar_FreeProp_hpp_
+
+#include <Grid/Hadrons/Global.hpp>
+#include <Grid/Hadrons/Module.hpp>
+#include <Grid/Hadrons/ModuleFactory.hpp>
+
+BEGIN_HADRONS_NAMESPACE
+
+/******************************************************************************
+ *                               FreeProp                                     *
+ ******************************************************************************/
+BEGIN_MODULE_NAMESPACE(MScalar)
+
+class FreePropPar: Serializable
+{
+public:
+    GRID_SERIALIZABLE_CLASS_MEMBERS(FreePropPar,
+                                    std::string, source,
+                                    double,      mass,
+                                    std::string, output);
+};
+
+class TFreeProp: public Module<FreePropPar>
+{
+public:
+    SCALAR_TYPE_ALIASES(SIMPL,);
+public:
+    // constructor
+    TFreeProp(const std::string name);
+    // destructor
+    virtual ~TFreeProp(void) = default;
+    // dependency relation
+    virtual std::vector<std::string> getInput(void);
+    virtual std::vector<std::string> getOutput(void);
+    // setup
+    virtual void setup(void);
+    // execution
+    virtual void execute(void);
+private:
+    std::string freeMomPropName_;
+};
+
+MODULE_REGISTER_NS(FreeProp, TFreeProp, MScalar);
+
+END_MODULE_NAMESPACE
+
+END_HADRONS_NAMESPACE
+
+#endif // Hadrons_MScalar_FreeProp_hpp_

extras/Hadrons/Modules/MScalar/Scalar.hpp

@@ -0,0 +1,6 @@
+#ifndef Hadrons_Scalar_hpp_
+#define Hadrons_Scalar_hpp_
+
+#define FREEMOMPROP(m) "_scalar_mom_prop_" + std::to_string(m)
+
+#endif // Hadrons_Scalar_hpp_

extras/Hadrons/Modules/MSink/Point.hpp

@@ -0,0 +1,114 @@
+#ifndef Hadrons_MSink_Point_hpp_
+#define Hadrons_MSink_Point_hpp_
+
+#include <Grid/Hadrons/Global.hpp>
+#include <Grid/Hadrons/Module.hpp>
+#include <Grid/Hadrons/ModuleFactory.hpp>
+
+BEGIN_HADRONS_NAMESPACE
+
+/******************************************************************************
+ *                                   Point                                    *
+ ******************************************************************************/
+BEGIN_MODULE_NAMESPACE(MSink)
+
+class PointPar: Serializable
+{
+public:
+    GRID_SERIALIZABLE_CLASS_MEMBERS(PointPar,
+                                    std::string, mom);
+};
+
+template <typename FImpl>
+class TPoint: public Module<PointPar>
+{
+public:
+    FERM_TYPE_ALIASES(FImpl,);
+    SINK_TYPE_ALIASES();
+public:
+    // constructor
+    TPoint(const std::string name);
+    // destructor
+    virtual ~TPoint(void) = default;
+    // dependency relation
+    virtual std::vector<std::string> getInput(void);
+    virtual std::vector<std::string> getOutput(void);
+    // setup
+    virtual void setup(void);
+    // execution
+    virtual void execute(void);
+};
+
+MODULE_REGISTER_NS(Point,       TPoint<FIMPL>,        MSink);
+MODULE_REGISTER_NS(ScalarPoint, TPoint<ScalarImplCR>, MSink);
+
+/******************************************************************************
+ *                          TPoint implementation                             *
+ ******************************************************************************/
+// constructor /////////////////////////////////////////////////////////////////
+template <typename FImpl>
+TPoint<FImpl>::TPoint(const std::string name)
+: Module<PointPar>(name)
+{}
+
+// dependencies/products ///////////////////////////////////////////////////////
+template <typename FImpl>
+std::vector<std::string> TPoint<FImpl>::getInput(void)
+{
+    std::vector<std::string> in;
+    
+    return in;
+}
+
+template <typename FImpl>
+std::vector<std::string> TPoint<FImpl>::getOutput(void)
+{
+    std::vector<std::string> out = {getName()};
+    
+    return out;
+}
+
+// setup ///////////////////////////////////////////////////////////////////////
+template <typename FImpl>
+void TPoint<FImpl>::setup(void)
+{
+    unsigned int size;
+    
+    size = env().template lattice4dSize<LatticeComplex>();
+    env().registerObject(getName(), size);
+}
+
+// execution ///////////////////////////////////////////////////////////////////
+template <typename FImpl>
+void TPoint<FImpl>::execute(void)
+{
+    std::vector<Real> p = strToVec<Real>(par().mom);
+    LatticeComplex    ph(env().getGrid()), coor(env().getGrid());
+    Complex           i(0.0,1.0);
+    
+    LOG(Message) << "Setting up point sink function for momentum ["
+                 << par().mom << "]" << std::endl;
+    ph = zero;
+    for(unsigned int mu = 0; mu < env().getNd(); mu++)
+    {
+        LatticeCoordinate(coor, mu);
+        ph = ph + (p[mu]/env().getGrid()->_fdimensions[mu])*coor;
+    }
+    ph = exp((Real)(2*M_PI)*i*ph);
+    auto sink = [ph](const PropagatorField &field)
+    {
+        SlicedPropagator res;
+        PropagatorField  tmp = ph*field;
+        
+        sliceSum(tmp, res, Tp);
+        
+        return res;
+    };
+    env().setObject(getName(), new SinkFn(sink));
+}
+
+END_MODULE_NAMESPACE
+
+END_HADRONS_NAMESPACE
+
+#endif // Hadrons_MSink_Point_hpp_

extras/Hadrons/Modules/MSolver/RBPrecCG.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_RBPrecCG_hpp_
-#define Hadrons_RBPrecCG_hpp_
+#ifndef Hadrons_MSolver_RBPrecCG_hpp_
+#define Hadrons_MSolver_RBPrecCG_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -53,7 +53,7 @@ template <typename FImpl>
 class TRBPrecCG: public Module<RBPrecCGPar>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FGS_TYPE_ALIASES(FImpl,);
 public:
     // constructor
     TRBPrecCG(const std::string name);
@@ -129,4 +129,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_RBPrecCG_hpp_
+#endif // Hadrons_MSolver_RBPrecCG_hpp_

extras/Hadrons/Modules/MSource/Point.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Point_hpp_
-#define Hadrons_Point_hpp_
+#ifndef Hadrons_MSource_Point_hpp_
+#define Hadrons_MSource_Point_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -63,7 +63,7 @@ template <typename FImpl>
 class TPoint: public Module<PointPar>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FERM_TYPE_ALIASES(FImpl,);
 public:
     // constructor
     TPoint(const std::string name);
@@ -78,7 +78,8 @@ public:
     virtual void execute(void);
 };
 
-MODULE_REGISTER_NS(Point, TPoint<FIMPL>, MSource);
+MODULE_REGISTER_NS(Point,       TPoint<FIMPL>,        MSource);
+MODULE_REGISTER_NS(ScalarPoint, TPoint<ScalarImplCR>, MSource);
 
 /******************************************************************************
  *                       TPoint template implementation                       *
@@ -132,4 +133,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Point_hpp_
+#endif // Hadrons_MSource_Point_hpp_

extras/Hadrons/Modules/MSource/SeqGamma.hpp

@@ -28,8 +28,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_SeqGamma_hpp_
-#define Hadrons_SeqGamma_hpp_
+#ifndef Hadrons_MSource_SeqGamma_hpp_
+#define Hadrons_MSource_SeqGamma_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -72,7 +72,7 @@ template <typename FImpl>
 class TSeqGamma: public Module<SeqGammaPar>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FGS_TYPE_ALIASES(FImpl,);
 public:
     // constructor
     TSeqGamma(const std::string name);
@@ -161,4 +161,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_SeqGamma_hpp_
+#endif // Hadrons_MSource_SeqGamma_hpp_

extras/Hadrons/Modules/MSource/Wall.hpp

@@ -26,8 +26,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_WallSource_hpp_
-#define Hadrons_WallSource_hpp_
+#ifndef Hadrons_MSource_WallSource_hpp_
+#define Hadrons_MSource_WallSource_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -64,7 +64,7 @@ template <typename FImpl>
 class TWall: public Module<WallPar>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FERM_TYPE_ALIASES(FImpl,);
 public:
     // constructor
     TWall(const std::string name);
@@ -144,4 +144,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_WallSource_hpp_
+#endif // Hadrons_MSource_WallSource_hpp_

extras/Hadrons/Modules/MSource/Z2.hpp

@@ -27,8 +27,8 @@ See the full license in the file "LICENSE" in the top level distribution directo
 *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef Hadrons_Z2_hpp_
-#define Hadrons_Z2_hpp_
+#ifndef Hadrons_MSource_Z2_hpp_
+#define Hadrons_MSource_Z2_hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -67,7 +67,7 @@ template <typename FImpl>
 class TZ2: public Module<Z2Par>
 {
 public:
-    TYPE_ALIASES(FImpl,);
+    FERM_TYPE_ALIASES(FImpl,);
 public:
     // constructor
     TZ2(const std::string name);
@@ -82,7 +82,8 @@ public:
     virtual void execute(void);
 };
 
-MODULE_REGISTER_NS(Z2, TZ2<FIMPL>, MSource);
+MODULE_REGISTER_NS(Z2,       TZ2<FIMPL>,        MSource);
+MODULE_REGISTER_NS(ScalarZ2, TZ2<ScalarImplCR>, MSource);
 
 /******************************************************************************
  *                       TZ2 template implementation                          *
@@ -148,4 +149,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons_Z2_hpp_
+#endif // Hadrons_MSource_Z2_hpp_

extras/Hadrons/Modules/templates/Module_in_NS.hpp.template

@@ -1,5 +1,5 @@
-#ifndef Hadrons____FILEBASENAME____hpp_
-#define Hadrons____FILEBASENAME____hpp_
+#ifndef Hadrons____NAMESPACE_______FILEBASENAME____hpp_
+#define Hadrons____NAMESPACE_______FILEBASENAME____hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -41,4 +41,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons____FILEBASENAME____hpp_
+#endif // Hadrons____NAMESPACE_______FILEBASENAME____hpp_

extras/Hadrons/Modules/templates/Module_tmp_in_NS.hpp.template

@@ -1,5 +1,5 @@
-#ifndef Hadrons____FILEBASENAME____hpp_
-#define Hadrons____FILEBASENAME____hpp_
+#ifndef Hadrons____NAMESPACE_______FILEBASENAME____hpp_
+#define Hadrons____NAMESPACE_______FILEBASENAME____hpp_
 
 #include <Grid/Hadrons/Global.hpp>
 #include <Grid/Hadrons/Module.hpp>
@@ -82,4 +82,4 @@ END_MODULE_NAMESPACE
 
 END_HADRONS_NAMESPACE
 
-#endif // Hadrons____FILEBASENAME____hpp_
+#endif // Hadrons____NAMESPACE_______FILEBASENAME____hpp_

extras/Hadrons/modules.inc

@@ -4,7 +4,10 @@ modules_cc =\
   Modules/MContraction/WeakNeutral4ptDisc.cc \
   Modules/MGauge/Load.cc \
   Modules/MGauge/Random.cc \
-  Modules/MGauge/Unit.cc
+  Modules/MGauge/StochEm.cc \
+  Modules/MGauge/Unit.cc \
+  Modules/MScalar/ChargedProp.cc \
+  Modules/MScalar/FreeProp.cc
 
 modules_hpp =\
   Modules/MAction/DWF.hpp \
@@ -17,14 +20,19 @@ modules_hpp =\
   Modules/MContraction/WeakHamiltonianEye.hpp \
   Modules/MContraction/WeakHamiltonianNonEye.hpp \
   Modules/MContraction/WeakNeutral4ptDisc.hpp \
+  Modules/MFermion/GaugeProp.hpp \
   Modules/MGauge/Load.hpp \
   Modules/MGauge/Random.hpp \
+  Modules/MGauge/StochEm.hpp \
   Modules/MGauge/Unit.hpp \
   Modules/MLoop/NoiseLoop.hpp \
+  Modules/MScalar/ChargedProp.hpp \
+  Modules/MScalar/FreeProp.hpp \
+  Modules/MScalar/Scalar.hpp \
+  Modules/MSink/Point.hpp \
   Modules/MSolver/RBPrecCG.hpp \
   Modules/MSource/Point.hpp \
   Modules/MSource/SeqGamma.hpp \
   Modules/MSource/Wall.hpp \
-  Modules/MSource/Z2.hpp \
-  Modules/Quark.hpp
+  Modules/MSource/Z2.hpp
 

extras/qed-fvol/Global.cc

@@ -0,0 +1,11 @@
+#include <qed-fvol/Global.hpp>
+
+using namespace Grid;
+using namespace QCD;
+using namespace QedFVol;
+
+QedFVolLogger QedFVol::QedFVolLogError(1,"Error");
+QedFVolLogger QedFVol::QedFVolLogWarning(1,"Warning");
+QedFVolLogger QedFVol::QedFVolLogMessage(1,"Message");
+QedFVolLogger QedFVol::QedFVolLogIterative(1,"Iterative");
+QedFVolLogger QedFVol::QedFVolLogDebug(1,"Debug");

extras/qed-fvol/Global.hpp

@@ -0,0 +1,42 @@
+#ifndef QedFVol_Global_hpp_
+#define QedFVol_Global_hpp_
+
+#include <Grid/Grid.h>
+
+#define BEGIN_QEDFVOL_NAMESPACE \
+namespace Grid {\
+using namespace QCD;\
+namespace QedFVol {\
+using Grid::operator<<;
+#define END_QEDFVOL_NAMESPACE }}
+
+/* the 'using Grid::operator<<;' statement prevents a very nasty compilation
+ * error with GCC (clang compiles fine without it).
+ */
+
+BEGIN_QEDFVOL_NAMESPACE
+
+class QedFVolLogger: public Logger
+{
+public:
+    QedFVolLogger(int on, std::string nm): Logger("QedFVol", on, nm,
+                                                  GridLogColours, "BLACK"){};
+};
+
+#define LOG(channel) std::cout << QedFVolLog##channel
+#define QEDFVOL_ERROR(msg)\
+LOG(Error) << msg << " (" << __FUNCTION__ << " at " << __FILE__ << ":"\
+           << __LINE__ << ")" << std::endl;\
+abort();
+
+#define DEBUG_VAR(var) LOG(Debug) << #var << "= " << (var) << std::endl;
+
+extern QedFVolLogger QedFVolLogError;
+extern QedFVolLogger QedFVolLogWarning;
+extern QedFVolLogger QedFVolLogMessage;
+extern QedFVolLogger QedFVolLogIterative;
+extern QedFVolLogger QedFVolLogDebug;
+
+END_QEDFVOL_NAMESPACE
+
+#endif // QedFVol_Global_hpp_

extras/qed-fvol/Makefile.am

@@ -0,0 +1,9 @@
+AM_CXXFLAGS += -I$(top_srcdir)/extras
+
+bin_PROGRAMS = qed-fvol
+
+qed_fvol_SOURCES =   \
+    qed-fvol.cc      \
+    Global.cc
+
+qed_fvol_LDADD   = -lGrid

extras/qed-fvol/WilsonLoops.h

@@ -0,0 +1,265 @@
+#ifndef QEDFVOL_WILSONLOOPS_H
+#define QEDFVOL_WILSONLOOPS_H
+
+#include <Global.hpp>
+
+BEGIN_QEDFVOL_NAMESPACE
+
+template <class Gimpl> class NewWilsonLoops : public Gimpl {
+public:
+  INHERIT_GIMPL_TYPES(Gimpl);
+
+  typedef typename Gimpl::GaugeLinkField GaugeMat;
+  typedef typename Gimpl::GaugeField GaugeLorentz;
+
+  //////////////////////////////////////////////////
+  // directed plaquette oriented in mu,nu plane
+  //////////////////////////////////////////////////
+  static void dirPlaquette(GaugeMat &plaq, const std::vector<GaugeMat> &U,
+                           const int mu, const int nu) {
+    // Annoyingly, must use either scope resolution to find dependent base
+    // class,
+    // or this-> ; there is no "this" in a static method. This forces explicit
+    // Gimpl scope
+    // resolution throughout the usage in this file, and rather defeats the
+    // purpose of deriving
+    // from Gimpl.
+    plaq = Gimpl::CovShiftBackward(
+        U[mu], mu, Gimpl::CovShiftBackward(
+                       U[nu], nu, Gimpl::CovShiftForward(U[mu], mu, U[nu])));
+  }
+  //////////////////////////////////////////////////
+  // trace of directed plaquette oriented in mu,nu plane
+  //////////////////////////////////////////////////
+  static void traceDirPlaquette(LatticeComplex &plaq,
+                                const std::vector<GaugeMat> &U, const int mu,
+                                const int nu) {
+    GaugeMat sp(U[0]._grid);
+    dirPlaquette(sp, U, mu, nu);
+    plaq = trace(sp);
+  }
+  //////////////////////////////////////////////////
+  // sum over all planes of plaquette
+  //////////////////////////////////////////////////
+  static void sitePlaquette(LatticeComplex &Plaq,
+                            const std::vector<GaugeMat> &U) {
+    LatticeComplex sitePlaq(U[0]._grid);
+    Plaq = zero;
+    for (int mu = 1; mu < U[0]._grid->_ndimension; mu++) {
+      for (int nu = 0; nu < mu; nu++) {
+        traceDirPlaquette(sitePlaq, U, mu, nu);
+        Plaq = Plaq + sitePlaq;
+      }
+    }
+  }
+  //////////////////////////////////////////////////
+  // sum over all x,y,z,t and over all planes of plaquette
+  //////////////////////////////////////////////////
+  static Real sumPlaquette(const GaugeLorentz &Umu) {
+    std::vector<GaugeMat> U(4, Umu._grid);
+
+    for (int mu = 0; mu < Umu._grid->_ndimension; mu++) {
+      U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
+    }
+
+    LatticeComplex Plaq(Umu._grid);
+
+    sitePlaquette(Plaq, U);
+
+    TComplex Tp = sum(Plaq);
+    Complex p = TensorRemove(Tp);
+    return p.real();
+  }
+  //////////////////////////////////////////////////
+  // average over all x,y,z,t and over all planes of plaquette
+  //////////////////////////////////////////////////
+  static Real avgPlaquette(const GaugeLorentz &Umu) {
+    int ndim = Umu._grid->_ndimension;
+    Real sumplaq = sumPlaquette(Umu);
+    Real vol = Umu._grid->gSites();
+    Real faces = (1.0 * ndim * (ndim - 1)) / 2.0;
+    return sumplaq / vol / faces / Nc; // Nc dependent... FIXME
+  }
+
+  //////////////////////////////////////////////////
+  // Wilson loop of size (R1, R2), oriented in mu,nu plane
+  //////////////////////////////////////////////////
+  static void wilsonLoop(GaugeMat &wl, const std::vector<GaugeMat> &U,
+                           const int Rmu, const int Rnu,
+                           const int mu, const int nu) {
+    wl = U[nu];
+
+    for(int i = 0; i < Rnu-1; i++){
+      wl = Gimpl::CovShiftForward(U[nu], nu, wl);
+    }
+
+    for(int i = 0; i < Rmu; i++){
+      wl = Gimpl::CovShiftForward(U[mu], mu, wl);
+    }
+
+    for(int i = 0; i < Rnu; i++){
+      wl = Gimpl::CovShiftBackward(U[nu], nu, wl);
+    }
+
+    for(int i = 0; i < Rmu; i++){
+      wl = Gimpl::CovShiftBackward(U[mu], mu, wl);
+    }
+  }
+  //////////////////////////////////////////////////
+  // trace of Wilson Loop oriented in mu,nu plane
+  //////////////////////////////////////////////////
+  static void traceWilsonLoop(LatticeComplex &wl,
+                                const std::vector<GaugeMat> &U,
+                                const int Rmu, const int Rnu,
+                                const int mu, const int nu) {
+    GaugeMat sp(U[0]._grid);
+    wilsonLoop(sp, U, Rmu, Rnu, mu, nu);
+    wl = trace(sp);
+  }
+  //////////////////////////////////////////////////
+  // sum over all planes of Wilson loop
+  //////////////////////////////////////////////////
+  static void siteWilsonLoop(LatticeComplex &Wl,
+                            const std::vector<GaugeMat> &U,
+                            const int R1, const int R2) {
+    LatticeComplex siteWl(U[0]._grid);
+    Wl = zero;
+    for (int mu = 1; mu < U[0]._grid->_ndimension; mu++) {
+      for (int nu = 0; nu < mu; nu++) {
+        traceWilsonLoop(siteWl, U, R1, R2, mu, nu);
+        Wl = Wl + siteWl;
+        traceWilsonLoop(siteWl, U, R2, R1, mu, nu);
+        Wl = Wl + siteWl;
+      }
+    }
+  }
+  //////////////////////////////////////////////////
+  // sum over planes of Wilson loop with length R1
+  // in the time direction
+  //////////////////////////////////////////////////
+  static void siteTimelikeWilsonLoop(LatticeComplex &Wl,
+                            const std::vector<GaugeMat> &U,
+                            const int R1, const int R2) {
+    LatticeComplex siteWl(U[0]._grid);
+
+    int ndim = U[0]._grid->_ndimension;
+
+    Wl = zero;
+    for (int nu = 0; nu < ndim - 1; nu++) {
+      traceWilsonLoop(siteWl, U, R1, R2, ndim-1, nu);
+      Wl = Wl + siteWl;
+    }
+  }
+  //////////////////////////////////////////////////
+  // sum Wilson loop over all planes orthogonal to the time direction
+  //////////////////////////////////////////////////
+  static void siteSpatialWilsonLoop(LatticeComplex &Wl,
+                            const std::vector<GaugeMat> &U,
+                            const int R1, const int R2) {
+    LatticeComplex siteWl(U[0]._grid);
+
+    Wl = zero;
+    for (int mu = 1; mu < U[0]._grid->_ndimension - 1; mu++) {
+      for (int nu = 0; nu < mu; nu++) {
+        traceWilsonLoop(siteWl, U, R1, R2, mu, nu);
+        Wl = Wl + siteWl;
+        traceWilsonLoop(siteWl, U, R2, R1, mu, nu);
+        Wl = Wl + siteWl;
+      }
+    }
+  }
+  //////////////////////////////////////////////////
+  // sum over all x,y,z,t and over all planes of Wilson loop
+  //////////////////////////////////////////////////
+  static Real sumWilsonLoop(const GaugeLorentz &Umu,
+                            const int R1, const int R2) {
+    std::vector<GaugeMat> U(4, Umu._grid);
+
+    for (int mu = 0; mu < Umu._grid->_ndimension; mu++) {
+      U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
+    }
+
+    LatticeComplex Wl(Umu._grid);
+
+    siteWilsonLoop(Wl, U, R1, R2);
+
+    TComplex Tp = sum(Wl);
+    Complex p = TensorRemove(Tp);
+    return p.real();
+  }
+  //////////////////////////////////////////////////
+  // sum over all x,y,z,t and over all planes of timelike Wilson loop
+  //////////////////////////////////////////////////
+  static Real sumTimelikeWilsonLoop(const GaugeLorentz &Umu,
+                            const int R1, const int R2) {
+    std::vector<GaugeMat> U(4, Umu._grid);
+
+    for (int mu = 0; mu < Umu._grid->_ndimension; mu++) {
+      U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
+    }
+
+    LatticeComplex Wl(Umu._grid);
+
+    siteTimelikeWilsonLoop(Wl, U, R1, R2);
+
+    TComplex Tp = sum(Wl);
+    Complex p = TensorRemove(Tp);
+    return p.real();
+  }
+  //////////////////////////////////////////////////
+  // sum over all x,y,z,t and over all planes of spatial Wilson loop
+  //////////////////////////////////////////////////
+  static Real sumSpatialWilsonLoop(const GaugeLorentz &Umu,
+                            const int R1, const int R2) {
+    std::vector<GaugeMat> U(4, Umu._grid);
+
+    for (int mu = 0; mu < Umu._grid->_ndimension; mu++) {
+      U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
+    }
+
+    LatticeComplex Wl(Umu._grid);
+
+    siteSpatialWilsonLoop(Wl, U, R1, R2);
+
+    TComplex Tp = sum(Wl);
+    Complex p = TensorRemove(Tp);
+    return p.real();
+  }
+  //////////////////////////////////////////////////
+  // average over all x,y,z,t and over all planes of Wilson loop
+  //////////////////////////////////////////////////
+  static Real avgWilsonLoop(const GaugeLorentz &Umu,
+                            const int R1, const int R2) {
+    int ndim = Umu._grid->_ndimension;
+    Real sumWl = sumWilsonLoop(Umu, R1, R2);
+    Real vol = Umu._grid->gSites();
+    Real faces = 1.0 * ndim * (ndim - 1);
+    return sumWl / vol / faces / Nc; // Nc dependent... FIXME
+  }
+  //////////////////////////////////////////////////
+  // average over all x,y,z,t and over all planes of timelike Wilson loop
+  //////////////////////////////////////////////////
+  static Real avgTimelikeWilsonLoop(const GaugeLorentz &Umu,
+                            const int R1, const int R2) {
+    int ndim = Umu._grid->_ndimension;
+    Real sumWl = sumTimelikeWilsonLoop(Umu, R1, R2);
+    Real vol = Umu._grid->gSites();
+    Real faces = 1.0 * (ndim - 1);
+    return sumWl / vol / faces / Nc; // Nc dependent... FIXME
+  }
+  //////////////////////////////////////////////////
+  // average over all x,y,z,t and over all planes of spatial Wilson loop
+  //////////////////////////////////////////////////
+  static Real avgSpatialWilsonLoop(const GaugeLorentz &Umu,
+                            const int R1, const int R2) {
+    int ndim = Umu._grid->_ndimension;
+    Real sumWl = sumSpatialWilsonLoop(Umu, R1, R2);
+    Real vol = Umu._grid->gSites();
+    Real faces = 1.0 * (ndim - 1) * (ndim - 2);
+    return sumWl / vol / faces / Nc; // Nc dependent... FIXME
+  }
+};
+
+END_QEDFVOL_NAMESPACE
+
+#endif // QEDFVOL_WILSONLOOPS_H

extras/qed-fvol/qed-fvol.cc

@@ -0,0 +1,88 @@
+#include <Global.hpp>
+#include <WilsonLoops.h>
+
+using namespace Grid;
+using namespace QCD;
+using namespace QedFVol;
+
+typedef PeriodicGaugeImpl<QedGimplR>    QedPeriodicGimplR;
+typedef PhotonR::GaugeField             EmField;
+typedef PhotonR::GaugeLinkField         EmComp;
+
+const int NCONFIGS = 10;
+const int NWILSON = 10;
+
+int main(int argc, char *argv[])
+{
+    // parse command line
+    std::string parameterFileName;
+    
+    if (argc < 2)
+    {
+        std::cerr << "usage: " << argv[0] << " <parameter file> [Grid options]";
+        std::cerr << std::endl;
+        std::exit(EXIT_FAILURE);
+    }
+    parameterFileName = argv[1];
+    
+    // initialization
+    Grid_init(&argc, &argv);
+    QedFVolLogError.Active(GridLogError.isActive());
+    QedFVolLogWarning.Active(GridLogWarning.isActive());
+    QedFVolLogMessage.Active(GridLogMessage.isActive());
+    QedFVolLogIterative.Active(GridLogIterative.isActive());
+    QedFVolLogDebug.Active(GridLogDebug.isActive());
+    LOG(Message) << "Grid initialized" << std::endl;
+    
+    // QED stuff
+    std::vector<int> latt_size   = GridDefaultLatt();
+    std::vector<int> simd_layout = GridDefaultSimd(4, vComplex::Nsimd());
+    std::vector<int> mpi_layout  = GridDefaultMpi();
+    GridCartesian    grid(latt_size,simd_layout,mpi_layout);
+    GridParallelRNG  pRNG(&grid);
+    PhotonR          photon(PhotonR::Gauge::feynman,
+                            PhotonR::ZmScheme::qedL);
+    EmField          a(&grid);
+    EmField          expA(&grid);
+
+    Complex imag_unit(0, 1);
+
+    Real wlA;
+    std::vector<Real> logWlAvg(NWILSON, 0.0), logWlTime(NWILSON, 0.0), logWlSpace(NWILSON, 0.0);
+
+    pRNG.SeedRandomDevice();
+
+    LOG(Message) << "Wilson loop calculation beginning" << std::endl;
+    for(int ic = 0; ic < NCONFIGS; ic++){
+        LOG(Message) << "Configuration " << ic <<std::endl;
+        photon.StochasticField(a, pRNG);
+
+        // Exponentiate photon field
+        expA = exp(imag_unit*a);
+
+        // Calculate Wilson loops
+        for(int iw=1; iw<=NWILSON; iw++){
+            wlA = NewWilsonLoops<QedPeriodicGimplR>::avgWilsonLoop(expA, iw, iw) * 3;
+            logWlAvg[iw-1] -= 2*log(wlA);
+            wlA = NewWilsonLoops<QedPeriodicGimplR>::avgTimelikeWilsonLoop(expA, iw, iw) * 3;
+            logWlTime[iw-1] -= 2*log(wlA);
+            wlA = NewWilsonLoops<QedPeriodicGimplR>::avgSpatialWilsonLoop(expA, iw, iw) * 3;
+            logWlSpace[iw-1] -= 2*log(wlA);
+        }
+    }
+    LOG(Message) << "Wilson loop calculation completed" << std::endl;
+    
+    // Calculate Wilson loops
+    for(int iw=1; iw<=10; iw++){
+        LOG(Message) << iw << 'x' << iw << " Wilson loop" << std::endl;
+        LOG(Message) << "-2log(W) average: " << logWlAvg[iw-1]/NCONFIGS << std::endl;
+        LOG(Message) << "-2log(W) timelike: " << logWlTime[iw-1]/NCONFIGS << std::endl;
+        LOG(Message) << "-2log(W) spatial: " << logWlSpace[iw-1]/NCONFIGS << std::endl;
+    }
+
+    // epilogue
+    LOG(Message) << "Grid is finalizing now" << std::endl;
+    Grid_finalize();
+    
+    return EXIT_SUCCESS;
+}

lib/Grid.h

@@ -41,7 +41,9 @@ Author: paboyle <paboyle@ph.ed.ac.uk>
 #include <Grid/GridCore.h>
 #include <Grid/GridQCDcore.h>
 #include <Grid/qcd/action/Action.h>
+#include <Grid/qcd/utils/GaugeFix.h>
 #include <Grid/qcd/smearing/Smearing.h>
+#include <Grid/parallelIO/MetaData.h>
 #include <Grid/qcd/hmc/HMC_aggregate.h>
 
 #endif

lib/GridStd.h

@@ -7,6 +7,7 @@
 #include <cassert>
 #include <complex>
 #include <vector>
+#include <string>
 #include <iostream>
 #include <iomanip>
 #include <random>
@@ -18,6 +19,7 @@
 #include <ctime>
 #include <sys/time.h>
 #include <chrono>
+#include <zlib.h>
 
 ///////////////////
 // Grid config

lib/Makefile.am

@@ -10,8 +10,8 @@ if BUILD_COMMS_MPI3
   extra_sources+=communicator/Communicator_base.cc
 endif
 
-if BUILD_COMMS_MPI3L
-  extra_sources+=communicator/Communicator_mpi3_leader.cc
+if BUILD_COMMS_MPIT
+  extra_sources+=communicator/Communicator_mpit.cc
   extra_sources+=communicator/Communicator_base.cc
 endif
 

lib/algorithms/densematrix/DenseMatrix.h

@@ -1,137 +0,0 @@
-    /*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/iterative/DenseMatrix.h
-
-    Copyright (C) 2015
-
-Author: Peter Boyle <paboyle@ph.ed.ac.uk>
-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 */
-#ifndef GRID_DENSE_MATRIX_H
-#define GRID_DENSE_MATRIX_H
-
-namespace Grid {
-    /////////////////////////////////////////////////////////////
-    // Matrix untils
-    /////////////////////////////////////////////////////////////
-
-template<class T> using DenseVector = std::vector<T>;
-template<class T> using DenseMatrix = DenseVector<DenseVector<T> >;
-
-template<class T> void Size(DenseVector<T> & vec, int &N) 
-{ 
-  N= vec.size();
-}
-template<class T> void Size(DenseMatrix<T> & mat, int &N,int &M) 
-{ 
-  N= mat.size();
-  M= mat[0].size();
-}
-
-template<class T> void SizeSquare(DenseMatrix<T> & mat, int &N) 
-{ 
-  int M; Size(mat,N,M);
-  assert(N==M);
-}
-
-template<class T> void Resize(DenseVector<T > & mat, int N) { 
-  mat.resize(N);
-}
-template<class T> void Resize(DenseMatrix<T > & mat, int N, int M) { 
-  mat.resize(N);
-  for(int i=0;i<N;i++){
-    mat[i].resize(M);
-  }
-}
-template<class T> void Fill(DenseMatrix<T> & mat, T&val) { 
-  int N,M;
-  Size(mat,N,M);
-  for(int i=0;i<N;i++){
-  for(int j=0;j<M;j++){
-    mat[i][j] = val;
-  }}
-}
-
-/** Transpose of a matrix **/
-template<class T> DenseMatrix<T> Transpose(DenseMatrix<T> & mat){
-  int N,M;
-  Size(mat,N,M);
-  DenseMatrix<T> C; Resize(C,M,N);
-  for(int i=0;i<M;i++){
-  for(int j=0;j<N;j++){
-    C[i][j] = mat[j][i];
-  }} 
-  return C;
-}
-/** Set DenseMatrix to unit matrix **/
-template<class T> void Unity(DenseMatrix<T> &A){
-  int N;  SizeSquare(A,N);
-  for(int i=0;i<N;i++){
-    for(int j=0;j<N;j++){
-      if ( i==j ) A[i][j] = 1;
-      else        A[i][j] = 0;
-    } 
-  } 
-}
-
-/** Add C * I to matrix **/
-template<class T>
-void PlusUnit(DenseMatrix<T> & A,T c){
-  int dim;  SizeSquare(A,dim);
-  for(int i=0;i<dim;i++){A[i][i] = A[i][i] + c;} 
-}
-
-/** return the Hermitian conjugate of matrix **/
-template<class T>
-DenseMatrix<T> HermitianConj(DenseMatrix<T> &mat){
-
-  int dim; SizeSquare(mat,dim);
-
-  DenseMatrix<T> C; Resize(C,dim,dim);
-
-  for(int i=0;i<dim;i++){
-    for(int j=0;j<dim;j++){
-      C[i][j] = conj(mat[j][i]);
-    } 
-  } 
-  return C;
-}
-/**Get a square submatrix**/
-template <class T>
-DenseMatrix<T> GetSubMtx(DenseMatrix<T> &A,int row_st, int row_end, int col_st, int col_end)
-{
-  DenseMatrix<T> H; Resize(H,row_end - row_st,col_end-col_st);
-
-  for(int i = row_st; i<row_end; i++){
-  for(int j = col_st; j<col_end; j++){
-    H[i-row_st][j-col_st]=A[i][j];
-  }}
-  return H;
-}
-
-}
-
-#include "Householder.h"
-#include "Francis.h"
-
-#endif
-

lib/algorithms/densematrix/Francis.h

@@ -1,525 +0,0 @@
-    /*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/iterative/Francis.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 */
-#ifndef FRANCIS_H
-#define FRANCIS_H
-
-#include <cstdlib>
-#include <string>
-#include <cmath>
-#include <iostream>
-#include <sstream>
-#include <stdexcept>
-#include <fstream>
-#include <complex>
-#include <algorithm>
-
-//#include <timer.h>
-//#include <lapacke.h>
-//#include <Eigen/Dense>
-
-namespace Grid {
-
-template <class T> int SymmEigensystem(DenseMatrix<T > &Ain, DenseVector<T> &evals, DenseMatrix<T> &evecs, RealD small);
-template <class T> int     Eigensystem(DenseMatrix<T > &Ain, DenseVector<T> &evals, DenseMatrix<T> &evecs, RealD small);
-
-/**
-  Find the eigenvalues of an upper hessenberg matrix using the Francis QR algorithm.
-H =
-      x  x  x  x  x  x  x  x  x
-      x  x  x  x  x  x  x  x  x
-      0  x  x  x  x  x  x  x  x
-      0  0  x  x  x  x  x  x  x
-      0  0  0  x  x  x  x  x  x
-      0  0  0  0  x  x  x  x  x
-      0  0  0  0  0  x  x  x  x
-      0  0  0  0  0  0  x  x  x
-      0  0  0  0  0  0  0  x  x
-Factorization is P T P^H where T is upper triangular (mod cc blocks) and P is orthagonal/unitary.
-**/
-template <class T>
-int QReigensystem(DenseMatrix<T> &Hin, DenseVector<T> &evals, DenseMatrix<T> &evecs, RealD small)
-{
-  DenseMatrix<T> H = Hin; 
-
-  int N ; SizeSquare(H,N);
-  int M = N;
-
-  Fill(evals,0);
-  Fill(evecs,0);
-
-  T s,t,x=0,y=0,z=0;
-  T u,d;
-  T apd,amd,bc;
-  DenseVector<T> p(N,0);
-  T nrm = Norm(H);    ///DenseMatrix Norm
-  int n, m;
-  int e = 0;
-  int it = 0;
-  int tot_it = 0;
-  int l = 0;
-  int r = 0;
-  DenseMatrix<T> P; Resize(P,N,N); Unity(P);
-  DenseVector<int> trows(N,0);
-
-  /// Check if the matrix is really hessenberg, if not abort
-  RealD sth = 0;
-  for(int j=0;j<N;j++){
-    for(int i=j+2;i<N;i++){
-      sth = abs(H[i][j]);
-      if(sth > small){
-	std::cout << "Non hessenberg H = " << sth << " > " << small << std::endl;
-	exit(1);
-      }
-    }
-  }
-
-  do{
-    std::cout << "Francis QR Step N = " << N << std::endl;
-    /** Check for convergence
-      x  x  x  x  x
-      0  x  x  x  x
-      0  0  x  x  x
-      0  0  x  x  x
-      0  0  0  0  x
-      for this matrix l = 4
-     **/
-    do{
-      l = Chop_subdiag(H,nrm,e,small);
-      r = 0;    ///May have converged on more than one eval
-      ///Single eval
-      if(l == N-1){
-        evals[e] = H[l][l];
-        N--; e++; r++; it = 0;
-      }
-      ///RealD eval
-      if(l == N-2){
-        trows[l+1] = 1;    ///Needed for UTSolve
-        apd = H[l][l] + H[l+1][l+1];
-        amd = H[l][l] - H[l+1][l+1];
-        bc =  (T)4.0*H[l+1][l]*H[l][l+1];
-        evals[e]   = (T)0.5*( apd + sqrt(amd*amd + bc) );
-        evals[e+1] = (T)0.5*( apd - sqrt(amd*amd + bc) );
-        N-=2; e+=2; r++; it = 0;
-      }
-    } while(r>0);
-
-    if(N ==0) break;
-
-    DenseVector<T > ck; Resize(ck,3);
-    DenseVector<T> v;   Resize(v,3);
-
-    for(int m = N-3; m >= l; m--){
-      ///Starting vector essentially random shift.
-      if(it%10 == 0 && N >= 3 && it > 0){
-        s = (T)1.618033989*( abs( H[N-1][N-2] ) + abs( H[N-2][N-3] ) );
-        t = (T)0.618033989*( abs( H[N-1][N-2] ) + abs( H[N-2][N-3] ) );
-        x = H[m][m]*H[m][m] + H[m][m+1]*H[m+1][m] - s*H[m][m] + t;
-        y = H[m+1][m]*(H[m][m] + H[m+1][m+1] - s);
-        z = H[m+1][m]*H[m+2][m+1];
-      }
-      ///Starting vector implicit Q theorem
-      else{
-        s = (H[N-2][N-2] + H[N-1][N-1]);
-        t = (H[N-2][N-2]*H[N-1][N-1] - H[N-2][N-1]*H[N-1][N-2]);
-        x = H[m][m]*H[m][m] + H[m][m+1]*H[m+1][m] - s*H[m][m] + t;
-        y = H[m+1][m]*(H[m][m] + H[m+1][m+1] - s);
-        z = H[m+1][m]*H[m+2][m+1];
-      }
-      ck[0] = x; ck[1] = y; ck[2] = z;
-
-      if(m == l) break;
-
-      /** Some stupid thing from numerical recipies, seems to work**/
-      // PAB.. for heaven's sake quote page, purpose, evidence it works.
-      //       what sort of comment is that!?!?!?
-      u=abs(H[m][m-1])*(abs(y)+abs(z));
-      d=abs(x)*(abs(H[m-1][m-1])+abs(H[m][m])+abs(H[m+1][m+1]));
-      if ((T)abs(u+d) == (T)abs(d) ){
-	l = m; break;
-      }
-
-      //if (u < small){l = m; break;}
-    }
-    if(it > 100000){
-     std::cout << "QReigensystem: bugger it got stuck after 100000 iterations" << std::endl;
-     std::cout << "got " << e << " evals " << l << " " << N << std::endl;
-      exit(1);
-    }
-    normalize(ck);    ///Normalization cancels in PHP anyway
-    T beta;
-    Householder_vector<T >(ck, 0, 2, v, beta);
-    Householder_mult<T >(H,v,beta,0,l,l+2,0);
-    Householder_mult<T >(H,v,beta,0,l,l+2,1);
-    ///Accumulate eigenvector
-    Householder_mult<T >(P,v,beta,0,l,l+2,1);
-    int sw = 0;      ///Are we on the last row?
-    for(int k=l;k<N-2;k++){
-      x = H[k+1][k];
-      y = H[k+2][k];
-      z = (T)0.0;
-      if(k+3 <= N-1){
-	z = H[k+3][k];
-      } else{
-	sw = 1; 
-	v[2] = (T)0.0;
-      }
-      ck[0] = x; ck[1] = y; ck[2] = z;
-      normalize(ck);
-      Householder_vector<T >(ck, 0, 2-sw, v, beta);
-      Householder_mult<T >(H,v, beta,0,k+1,k+3-sw,0);
-      Householder_mult<T >(H,v, beta,0,k+1,k+3-sw,1);
-      ///Accumulate eigenvector
-      Householder_mult<T >(P,v, beta,0,k+1,k+3-sw,1);
-    }
-    it++;
-    tot_it++;
-  }while(N > 1);
-  N = evals.size();
-  ///Annoying - UT solves in reverse order;
-  DenseVector<T> tmp; Resize(tmp,N);
-  for(int i=0;i<N;i++){
-    tmp[i] = evals[N-i-1];
-  } 
-  evals = tmp;
-  UTeigenvectors(H, trows, evals, evecs);
-  for(int i=0;i<evals.size();i++){evecs[i] = P*evecs[i]; normalize(evecs[i]);}
-  return tot_it;
-}
-
-template <class T>
-int my_Wilkinson(DenseMatrix<T> &Hin, DenseVector<T> &evals, DenseMatrix<T> &evecs, RealD small)
-{
-  /**
-  Find the eigenvalues of an upper Hessenberg matrix using the Wilkinson QR algorithm.
-  H =
-  x  x  0  0  0  0
-  x  x  x  0  0  0
-  0  x  x  x  0  0
-  0  0  x  x  x  0
-  0  0  0  x  x  x
-  0  0  0  0  x  x
-  Factorization is P T P^H where T is upper triangular (mod cc blocks) and P is orthagonal/unitary.  **/
-  return my_Wilkinson(Hin, evals, evecs, small, small);
-}
-
-template <class T>
-int my_Wilkinson(DenseMatrix<T> &Hin, DenseVector<T> &evals, DenseMatrix<T> &evecs, RealD small, RealD tol)
-{
-  int N; SizeSquare(Hin,N);
-  int M = N;
-
-  ///I don't want to modify the input but matricies must be passed by reference
-  //Scale a matrix by its "norm"
-  //RealD Hnorm = abs( Hin.LargestDiag() ); H =  H*(1.0/Hnorm);
-  DenseMatrix<T> H;  H = Hin;
-  
-  RealD Hnorm = abs(Norm(Hin));
-  H = H * (1.0 / Hnorm);
-
-  // TODO use openmp and memset
-  Fill(evals,0);
-  Fill(evecs,0);
-
-  T s, t, x = 0, y = 0, z = 0;
-  T u, d;
-  T apd, amd, bc;
-  DenseVector<T> p; Resize(p,N); Fill(p,0);
-
-  T nrm = Norm(H);    ///DenseMatrix Norm
-  int n, m;
-  int e = 0;
-  int it = 0;
-  int tot_it = 0;
-  int l = 0;
-  int r = 0;
-  DenseMatrix<T> P; Resize(P,N,N);
-  Unity(P);
-  DenseVector<int> trows(N, 0);
-  /// Check if the matrix is really symm tridiag
-  RealD sth = 0;
-  for(int j = 0; j < N; ++j)
-  {
-    for(int i = j + 2; i < N; ++i)
-    {
-      if(abs(H[i][j]) > tol || abs(H[j][i]) > tol)
-      {
-	std::cout << "Non Tridiagonal H(" << i << ","<< j << ") = |" << Real( real( H[j][i] ) ) << "| > " << tol << std::endl;
-	std::cout << "Warning tridiagonalize and call again" << std::endl;
-        // exit(1); // see what is going on
-        //return;
-      }
-    }
-  }
-
-  do{
-    do{
-      //Jasper
-      //Check if the subdiagonal term is small enough (<small)
-      //if true then it is converged.
-      //check start from H.dim - e - 1
-      //How to deal with more than 2 are converged?
-      //What if Chop_symm_subdiag return something int the middle?
-      //--------------
-      l = Chop_symm_subdiag(H,nrm, e, small);
-      r = 0;    ///May have converged on more than one eval
-      //Jasper
-      //In this case
-      // x  x  0  0  0  0
-      // x  x  x  0  0  0
-      // 0  x  x  x  0  0
-      // 0  0  x  x  x  0
-      // 0  0  0  x  x  0
-      // 0  0  0  0  0  x  <- l
-      //--------------
-      ///Single eval
-      if(l == N - 1)
-      {
-        evals[e] = H[l][l];
-        N--;
-        e++;
-        r++;
-        it = 0;
-      }
-      //Jasper
-      // x  x  0  0  0  0
-      // x  x  x  0  0  0
-      // 0  x  x  x  0  0
-      // 0  0  x  x  0  0
-      // 0  0  0  0  x  x  <- l
-      // 0  0  0  0  x  x
-      //--------------
-      ///RealD eval
-      if(l == N - 2)
-      {
-        trows[l + 1] = 1;    ///Needed for UTSolve
-        apd = H[l][l] + H[l + 1][ l + 1];
-        amd = H[l][l] - H[l + 1][l + 1];
-        bc =  (T) 4.0 * H[l + 1][l] * H[l][l + 1];
-        evals[e] = (T) 0.5 * (apd + sqrt(amd * amd + bc));
-        evals[e + 1] = (T) 0.5 * (apd - sqrt(amd * amd + bc));
-        N -= 2;
-        e += 2;
-        r++;
-        it = 0;
-      }
-    }while(r > 0);
-    //Jasper
-    //Already converged
-    //--------------
-    if(N == 0) break;
-
-    DenseVector<T> ck,v; Resize(ck,2); Resize(v,2);
-
-    for(int m = N - 3; m >= l; m--)
-    {
-      ///Starting vector essentially random shift.
-      if(it%10 == 0 && N >= 3 && it > 0)
-      {
-        t = abs(H[N - 1][N - 2]) + abs(H[N - 2][N - 3]);
-        x = H[m][m] - t;
-        z = H[m + 1][m];
-      } else {
-      ///Starting vector implicit Q theorem
-        d = (H[N - 2][N - 2] - H[N - 1][N - 1]) * (T) 0.5;
-        t =  H[N - 1][N - 1] - H[N - 1][N - 2] * H[N - 1][N - 2] 
-	  / (d + sign(d) * sqrt(d * d + H[N - 1][N - 2] * H[N - 1][N - 2]));
-        x = H[m][m] - t;
-        z = H[m + 1][m];
-      }
-      //Jasper
-      //why it is here????
-      //-----------------------
-      if(m == l)
-        break;
-
-      u = abs(H[m][m - 1]) * (abs(y) + abs(z));
-      d = abs(x) * (abs(H[m - 1][m - 1]) + abs(H[m][m]) + abs(H[m + 1][m + 1]));
-      if ((T)abs(u + d) == (T)abs(d))
-      {
-        l = m;
-        break;
-      }
-    }
-    //Jasper
-    if(it > 1000000)
-    {
-      std::cout << "Wilkinson: bugger it got stuck after 100000 iterations" << std::endl;
-      std::cout << "got " << e << " evals " << l << " " << N << std::endl;
-      exit(1);
-    }
-    //
-    T s, c;
-    Givens_calc<T>(x, z, c, s);
-    Givens_mult<T>(H, l, l + 1, c, -s, 0);
-    Givens_mult<T>(H, l, l + 1, c,  s, 1);
-    Givens_mult<T>(P, l, l + 1, c,  s, 1);
-    //
-    for(int k = l; k < N - 2; ++k)
-    {
-      x = H.A[k + 1][k];
-      z = H.A[k + 2][k];
-      Givens_calc<T>(x, z, c, s);
-      Givens_mult<T>(H, k + 1, k + 2, c, -s, 0);
-      Givens_mult<T>(H, k + 1, k + 2, c,  s, 1);
-      Givens_mult<T>(P, k + 1, k + 2, c,  s, 1);
-    }
-    it++;
-    tot_it++;
-  }while(N > 1);
-
-  N = evals.size();
-  ///Annoying - UT solves in reverse order;
-  DenseVector<T> tmp(N);
-  for(int i = 0; i < N; ++i)
-    tmp[i] = evals[N-i-1];
-  evals = tmp;
-  //
-  UTeigenvectors(H, trows, evals, evecs);
-  //UTSymmEigenvectors(H, trows, evals, evecs);
-  for(int i = 0; i < evals.size(); ++i)
-  {
-    evecs[i] = P * evecs[i];
-    normalize(evecs[i]);
-    evals[i] = evals[i] * Hnorm;
-  }
-  // // FIXME this is to test
-  // Hin.write("evecs3", evecs);
-  // Hin.write("evals3", evals);
-  // // check rsd
-  // for(int i = 0; i < M; i++) {
-  //   vector<T> Aevec = Hin * evecs[i];
-  //   RealD norm2(0.);
-  //   for(int j = 0; j < M; j++) {
-  //     norm2 += (Aevec[j] - evals[i] * evecs[i][j]) * (Aevec[j] - evals[i] * evecs[i][j]);
-  //   }
-  // }
-  return tot_it;
-}
-
-template <class T>
-void Hess(DenseMatrix<T > &A, DenseMatrix<T> &Q, int start){
-
-  /**
-  turn a matrix A =
-  x  x  x  x  x
-  x  x  x  x  x
-  x  x  x  x  x
-  x  x  x  x  x
-  x  x  x  x  x
-  into
-  x  x  x  x  x
-  x  x  x  x  x
-  0  x  x  x  x
-  0  0  x  x  x
-  0  0  0  x  x
-  with householder rotations
-  Slow.
-  */
-  int N ; SizeSquare(A,N);
-  DenseVector<T > p; Resize(p,N); Fill(p,0);
-
-  for(int k=start;k<N-2;k++){
-    //cerr << "hess" << k << std::endl;
-    DenseVector<T > ck,v; Resize(ck,N-k-1); Resize(v,N-k-1);
-    for(int i=k+1;i<N;i++){ck[i-k-1] = A(i,k);}  ///kth column
-    normalize(ck);    ///Normalization cancels in PHP anyway
-    T beta;
-    Householder_vector<T >(ck, 0, ck.size()-1, v, beta);  ///Householder vector
-    Householder_mult<T>(A,v,beta,start,k+1,N-1,0);  ///A -> PA
-    Householder_mult<T >(A,v,beta,start,k+1,N-1,1);  ///PA -> PAP^H
-    ///Accumulate eigenvector
-    Householder_mult<T >(Q,v,beta,start,k+1,N-1,1);  ///Q -> QP^H
-  }
-  /*for(int l=0;l<N-2;l++){
-    for(int k=l+2;k<N;k++){
-    A(0,k,l);
-    }
-    }*/
-}
-
-template <class T>
-void Tri(DenseMatrix<T > &A, DenseMatrix<T> &Q, int start){
-///Tridiagonalize a matrix
-  int N; SizeSquare(A,N);
-  Hess(A,Q,start);
-  /*for(int l=0;l<N-2;l++){
-    for(int k=l+2;k<N;k++){
-    A(0,l,k);
-    }
-    }*/
-}
-
-template <class T>
-void ForceTridiagonal(DenseMatrix<T> &A){
-///Tridiagonalize a matrix
-  int N ; SizeSquare(A,N);
-  for(int l=0;l<N-2;l++){
-    for(int k=l+2;k<N;k++){
-      A[l][k]=0;
-      A[k][l]=0;
-    }
-  }
-}
-
-template <class T>
-int my_SymmEigensystem(DenseMatrix<T > &Ain, DenseVector<T> &evals, DenseVector<DenseVector<T> > &evecs, RealD small){
-  ///Solve a symmetric eigensystem, not necessarily in tridiagonal form
-  int N; SizeSquare(Ain,N);
-  DenseMatrix<T > A; A = Ain;
-  DenseMatrix<T > Q; Resize(Q,N,N); Unity(Q);
-  Tri(A,Q,0);
-  int it = my_Wilkinson<T>(A, evals, evecs, small);
-  for(int k=0;k<N;k++){evecs[k] = Q*evecs[k];}
-  return it;
-}
-
-
-template <class T>
-int Wilkinson(DenseMatrix<T> &Ain, DenseVector<T> &evals, DenseVector<DenseVector<T> > &evecs, RealD small){
-  return my_Wilkinson(Ain, evals, evecs, small);
-}
-
-template <class T>
-int SymmEigensystem(DenseMatrix<T> &Ain, DenseVector<T> &evals, DenseVector<DenseVector<T> > &evecs, RealD small){
-  return my_SymmEigensystem(Ain, evals, evecs, small);
-}
-
-template <class T>
-int Eigensystem(DenseMatrix<T > &Ain, DenseVector<T> &evals, DenseVector<DenseVector<T> > &evecs, RealD small){
-///Solve a general eigensystem, not necessarily in tridiagonal form
-  int N = Ain.dim;
-  DenseMatrix<T > A(N); A = Ain;
-  DenseMatrix<T > Q(N);Q.Unity();
-  Hess(A,Q,0);
-  int it = QReigensystem<T>(A, evals, evecs, small);
-  for(int k=0;k<N;k++){evecs[k] = Q*evecs[k];}
-  return it;
-}
-
-}
-#endif

lib/algorithms/densematrix/Householder.h

@@ -1,242 +0,0 @@
-    /*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/iterative/Householder.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 */
-#ifndef HOUSEHOLDER_H
-#define HOUSEHOLDER_H
-
-#define TIMER(A) std::cout << GridLogMessage << __FUNC__ << " file "<< __FILE__ <<" line " << __LINE__ << std::endl;
-#define ENTER()  std::cout << GridLogMessage << "ENTRY "<<__FUNC__ << " file "<< __FILE__ <<" line " << __LINE__ << std::endl;
-#define LEAVE()  std::cout << GridLogMessage << "EXIT  "<<__FUNC__ << " file "<< __FILE__ <<" line " << __LINE__ << std::endl;
-
-#include <cstdlib>
-#include <string>
-#include <cmath>
-#include <iostream>
-#include <sstream>
-#include <stdexcept>
-#include <fstream>
-#include <complex>
-#include <algorithm>
-
-namespace Grid {
-/** Comparison function for finding the max element in a vector **/
-template <class T> bool cf(T i, T j) { 
-  return abs(i) < abs(j); 
-}
-
-/** 
-	Calculate a real Givens angle 
- **/
-template <class T> inline void Givens_calc(T y, T z, T &c, T &s){
-
-  RealD mz = (RealD)abs(z);
-  
-  if(mz==0.0){
-    c = 1; s = 0;
-  }
-  if(mz >= (RealD)abs(y)){
-    T t = -y/z;
-    s = (T)1.0 / sqrt ((T)1.0 + t * t);
-    c = s * t;
-  } else {
-    T t = -z/y;
-    c = (T)1.0 / sqrt ((T)1.0 + t * t);
-    s = c * t;
-  }
-}
-
-template <class T> inline void Givens_mult(DenseMatrix<T> &A,  int i, int k, T c, T s, int dir)
-{
-  int q ; SizeSquare(A,q);
-
-  if(dir == 0){
-    for(int j=0;j<q;j++){
-      T nu = A[i][j];
-      T w  = A[k][j];
-      A[i][j] = (c*nu + s*w);
-      A[k][j] = (-s*nu + c*w);
-    }
-  }
-
-  if(dir == 1){
-    for(int j=0;j<q;j++){
-      T nu = A[j][i];
-      T w  = A[j][k];
-      A[j][i] = (c*nu - s*w);
-      A[j][k] = (s*nu + c*w);
-    }
-  }
-}
-
-/**
-	from input = x;
-	Compute the complex Householder vector, v, such that
-	P = (I - b v transpose(v) )
-	b = 2/v.v
-
-	P | x |    | x | k = 0
-	| x |    | 0 | 
-	| x | =  | 0 |
-	| x |    | 0 | j = 3
-	| x |	   | x |
-
-	These are the "Unreduced" Householder vectors.
-
- **/
-template <class T> inline void Householder_vector(DenseVector<T> input, int k, int j, DenseVector<T> &v, T &beta)
-{
-  int N ; Size(input,N);
-  T m = *max_element(input.begin() + k, input.begin() + j + 1, cf<T> );
-
-  if(abs(m) > 0.0){
-    T alpha = 0;
-
-    for(int i=k; i<j+1; i++){
-      v[i] = input[i]/m;
-      alpha = alpha + v[i]*conj(v[i]);
-    }
-    alpha = sqrt(alpha);
-    beta = (T)1.0/(alpha*(alpha + abs(v[k]) ));
-
-    if(abs(v[k]) > 0.0)  v[k] = v[k] + (v[k]/abs(v[k]))*alpha;
-    else                 v[k] = -alpha;
-  } else{
-    for(int i=k; i<j+1; i++){
-      v[i] = 0.0;
-    } 
-  }
-}
-
-/**
-	from input = x;
-	Compute the complex Householder vector, v, such that
-	P = (I - b v transpose(v) )
-	b = 2/v.v
-
-	Px = alpha*e_dir
-
-	These are the "Unreduced" Householder vectors.
-
- **/
-
-template <class T> inline void Householder_vector(DenseVector<T> input, int k, int j, int dir, DenseVector<T> &v, T &beta)
-{
-  int N = input.size();
-  T m = *max_element(input.begin() + k, input.begin() + j + 1, cf);
-  
-  if(abs(m) > 0.0){
-    T alpha = 0;
-
-    for(int i=k; i<j+1; i++){
-      v[i] = input[i]/m;
-      alpha = alpha + v[i]*conj(v[i]);
-    }
-    
-    alpha = sqrt(alpha);
-    beta = 1.0/(alpha*(alpha + abs(v[dir]) ));
-	
-    if(abs(v[dir]) > 0.0) v[dir] = v[dir] + (v[dir]/abs(v[dir]))*alpha;
-    else                  v[dir] = -alpha;
-  }else{
-    for(int i=k; i<j+1; i++){
-      v[i] = 0.0;
-    } 
-  }
-}
-
-/**
-	Compute the product PA if trans = 0
-	AP if trans = 1
-	P = (I - b v transpose(v) )
-	b = 2/v.v
-	start at element l of matrix A
-	v is of length j - k + 1 of v are nonzero
- **/
-
-template <class T> inline void Householder_mult(DenseMatrix<T> &A , DenseVector<T> v, T beta, int l, int k, int j, int trans)
-{
-  int N ; SizeSquare(A,N);
-
-  if(abs(beta) > 0.0){
-    for(int p=l; p<N; p++){
-      T s = 0;
-      if(trans==0){
-	for(int i=k;i<j+1;i++) s += conj(v[i-k])*A[i][p];
-	s *= beta;
-	for(int i=k;i<j+1;i++){ A[i][p] = A[i][p]-s*conj(v[i-k]);}
-      } else {
-	for(int i=k;i<j+1;i++){ s += conj(v[i-k])*A[p][i];}
-	s *= beta;
-	for(int i=k;i<j+1;i++){ A[p][i]=A[p][i]-s*conj(v[i-k]);}
-      }
-    }
-  }
-}
-
-/**
-	Compute the product PA if trans = 0
-	AP if trans = 1
-	P = (I - b v transpose(v) )
-	b = 2/v.v
-	start at element l of matrix A
-	v is of length j - k + 1 of v are nonzero
-	A is tridiagonal
- **/
-template <class T> inline void Householder_mult_tri(DenseMatrix<T> &A , DenseVector<T> v, T beta, int l, int M, int k, int j, int trans)
-{
-  if(abs(beta) > 0.0){
-
-    int N ; SizeSquare(A,N);
-
-    DenseMatrix<T> tmp; Resize(tmp,N,N); Fill(tmp,0); 
-
-    T s;
-    for(int p=l; p<M; p++){
-      s = 0;
-      if(trans==0){
-	for(int i=k;i<j+1;i++) s = s + conj(v[i-k])*A[i][p];
-      }else{
-	for(int i=k;i<j+1;i++) s = s + v[i-k]*A[p][i];
-      }
-      s = beta*s;
-      if(trans==0){
-	for(int i=k;i<j+1;i++) tmp[i][p] = tmp(i,p) - s*v[i-k];
-      }else{
-	for(int i=k;i<j+1;i++) tmp[p][i] = tmp[p][i] - s*conj(v[i-k]);
-      }
-    }
-    for(int p=l; p<M; p++){
-      if(trans==0){
-	for(int i=k;i<j+1;i++) A[i][p] = A[i][p] + tmp[i][p];
-      }else{
-	for(int i=k;i<j+1;i++) A[p][i] = A[p][i] + tmp[p][i];
-      }
-    }
-  }
-}
-}
-#endif

lib/algorithms/iterative/BlockConjugateGradient.h

@@ -33,6 +33,8 @@ directory
 
 namespace Grid {
 
+enum BlockCGtype { BlockCG, BlockCGrQ, CGmultiRHS };
+
 //////////////////////////////////////////////////////////////////////////
 // Block conjugate gradient. Dimension zero should be the block direction
 //////////////////////////////////////////////////////////////////////////
@@ -40,25 +42,280 @@ template <class Field>
 class BlockConjugateGradient : public OperatorFunction<Field> {
  public:
 
+
   typedef typename Field::scalar_type scomplex;
 
-  const int blockDim = 0;
-
+  int blockDim ;
   int Nblock;
+
+  BlockCGtype CGtype;
   bool ErrorOnNoConverge;  // throw an assert when the CG fails to converge.
                            // Defaults true.
   RealD Tolerance;
   Integer MaxIterations;
   Integer IterationsToComplete; //Number of iterations the CG took to finish. Filled in upon completion
   
-  BlockConjugateGradient(RealD tol, Integer maxit, bool err_on_no_conv = true)
-    : Tolerance(tol),
-    MaxIterations(maxit),
-    ErrorOnNoConverge(err_on_no_conv){};
+  BlockConjugateGradient(BlockCGtype cgtype,int _Orthog,RealD tol, Integer maxit, bool err_on_no_conv = true)
+    : Tolerance(tol), CGtype(cgtype),   blockDim(_Orthog),  MaxIterations(maxit), ErrorOnNoConverge(err_on_no_conv)
+  {};
 
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Thin QR factorisation (google it)
+////////////////////////////////////////////////////////////////////////////////////////////////////
+void ThinQRfact (Eigen::MatrixXcd &m_rr,
+		 Eigen::MatrixXcd &C,
+		 Eigen::MatrixXcd &Cinv,
+		 Field & Q,
+		 const Field & R)
+{
+  int Orthog = blockDim; // First dimension is block dim; this is an assumption
+  ////////////////////////////////////////////////////////////////////////////////////////////////////
+  //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
+  ////////////////////////////////////////////////////////////////////////////////////////////////////
+  sliceInnerProductMatrix(m_rr,R,R,Orthog);
+
+  ////////////////////////////////////////////////////////////////////////////////////////////////////
+  // Cholesky from Eigen
+  // There exists a ldlt that is documented as more stable
+  ////////////////////////////////////////////////////////////////////////////////////////////////////
+  Eigen::MatrixXcd L    = m_rr.llt().matrixL(); 
+
+  C    = L.adjoint();
+  Cinv = C.inverse();
+
+  ////////////////////////////////////////////////////////////////////////////////////////////////////
+  // Q = R C^{-1}
+  //
+  // Q_j  = R_i Cinv(i,j) 
+  //
+  // NB maddMatrix conventions are Right multiplication X[j] a[j,i] already
+  ////////////////////////////////////////////////////////////////////////////////////////////////////
+  // FIXME:: make a sliceMulMatrix to avoid zero vector
+  sliceMulMatrix(Q,Cinv,R,Orthog);
+}
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Call one of several implementations
+////////////////////////////////////////////////////////////////////////////////////////////////////
 void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi) 
 {
-  int Orthog = 0; // First dimension is block dim
+  if ( CGtype == BlockCGrQ ) {
+    BlockCGrQsolve(Linop,Src,Psi);
+  } else if (CGtype == BlockCG ) {
+    BlockCGsolve(Linop,Src,Psi);
+  } else if (CGtype == CGmultiRHS ) {
+    CGmultiRHSsolve(Linop,Src,Psi);
+  } else {
+    assert(0);
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////
+// BlockCGrQ implementation:
+//--------------------------
+// X is guess/Solution
+// B is RHS
+// Solve A X_i = B_i    ;        i refers to Nblock index
+////////////////////////////////////////////////////////////////////////////
+void BlockCGrQsolve(LinearOperatorBase<Field> &Linop, const Field &B, Field &X) 
+{
+  int Orthog = blockDim; // First dimension is block dim; this is an assumption
+  Nblock = B._grid->_fdimensions[Orthog];
+
+  std::cout<<GridLogMessage<<" Block Conjugate Gradient : Orthog "<<Orthog<<" Nblock "<<Nblock<<std::endl;
+
+  X.checkerboard = B.checkerboard;
+  conformable(X, B);
+
+  Field tmp(B);
+  Field Q(B);
+  Field D(B);
+  Field Z(B);
+  Field AD(B);
+
+  Eigen::MatrixXcd m_DZ     = Eigen::MatrixXcd::Identity(Nblock,Nblock);
+  Eigen::MatrixXcd m_M      = Eigen::MatrixXcd::Identity(Nblock,Nblock);
+  Eigen::MatrixXcd m_rr     = Eigen::MatrixXcd::Zero(Nblock,Nblock);
+
+  Eigen::MatrixXcd m_C      = Eigen::MatrixXcd::Zero(Nblock,Nblock);
+  Eigen::MatrixXcd m_Cinv   = Eigen::MatrixXcd::Zero(Nblock,Nblock);
+  Eigen::MatrixXcd m_S      = Eigen::MatrixXcd::Zero(Nblock,Nblock);
+  Eigen::MatrixXcd m_Sinv   = Eigen::MatrixXcd::Zero(Nblock,Nblock);
+
+  Eigen::MatrixXcd m_tmp    = Eigen::MatrixXcd::Identity(Nblock,Nblock);
+  Eigen::MatrixXcd m_tmp1   = Eigen::MatrixXcd::Identity(Nblock,Nblock);
+
+  // Initial residual computation & set up
+  std::vector<RealD> residuals(Nblock);
+  std::vector<RealD> ssq(Nblock);
+
+  sliceNorm(ssq,B,Orthog);
+  RealD sssum=0;
+  for(int b=0;b<Nblock;b++) sssum+=ssq[b];
+
+  sliceNorm(residuals,B,Orthog);
+  for(int b=0;b<Nblock;b++){ assert(std::isnan(residuals[b])==0); }
+
+  sliceNorm(residuals,X,Orthog);
+  for(int b=0;b<Nblock;b++){ assert(std::isnan(residuals[b])==0); }
+
+  /************************************************************************
+   * Block conjugate gradient rQ (Sebastien Birk Thesis, after Dubrulle 2001)
+   ************************************************************************
+   * Dimensions:
+   *
+   *   X,B==(Nferm x Nblock)
+   *   A==(Nferm x Nferm)
+   *  
+   * Nferm = Nspin x Ncolour x Ncomplex x Nlattice_site
+   * 
+   * QC = R = B-AX, D = Q     ; QC => Thin QR factorisation (google it)
+   * for k: 
+   *   Z  = AD
+   *   M  = [D^dag Z]^{-1}
+   *   X  = X + D MC
+   *   QS = Q - ZM
+   *   D  = Q + D S^dag
+   *   C  = S C
+   */
+  ///////////////////////////////////////
+  // Initial block: initial search dir is guess
+  ///////////////////////////////////////
+  std::cout << GridLogMessage<<"BlockCGrQ algorithm initialisation " <<std::endl;
+
+  //1.  QC = R = B-AX, D = Q     ; QC => Thin QR factorisation (google it)
+
+  Linop.HermOp(X, AD);
+  tmp = B - AD;  
+  //std::cout << GridLogMessage << " initial tmp " << norm2(tmp)<< std::endl;
+  ThinQRfact (m_rr, m_C, m_Cinv, Q, tmp);
+  //std::cout << GridLogMessage << " initial Q " << norm2(Q)<< std::endl;
+  //std::cout << GridLogMessage << " m_rr " << m_rr<<std::endl;
+  //std::cout << GridLogMessage << " m_C " << m_C<<std::endl;
+  //std::cout << GridLogMessage << " m_Cinv " << m_Cinv<<std::endl;
+  D=Q;
+
+  std::cout << GridLogMessage<<"BlockCGrQ computed initial residual and QR fact " <<std::endl;
+
+  ///////////////////////////////////////
+  // Timers
+  ///////////////////////////////////////
+  GridStopWatch sliceInnerTimer;
+  GridStopWatch sliceMaddTimer;
+  GridStopWatch QRTimer;
+  GridStopWatch MatrixTimer;
+  GridStopWatch SolverTimer;
+  SolverTimer.Start();
+
+  int k;
+  for (k = 1; k <= MaxIterations; k++) {
+
+    //3. Z  = AD
+    MatrixTimer.Start();
+    Linop.HermOp(D, Z);      
+    MatrixTimer.Stop();
+    //std::cout << GridLogMessage << " norm2 Z " <<norm2(Z)<<std::endl;
+
+    //4. M  = [D^dag Z]^{-1}
+    sliceInnerTimer.Start();
+    sliceInnerProductMatrix(m_DZ,D,Z,Orthog);
+    sliceInnerTimer.Stop();
+    m_M       = m_DZ.inverse();
+    //std::cout << GridLogMessage << " m_DZ " <<m_DZ<<std::endl;
+    
+    //5. X  = X + D MC
+    m_tmp     = m_M * m_C;
+    sliceMaddTimer.Start();
+    sliceMaddMatrix(X,m_tmp, D,X,Orthog);     
+    sliceMaddTimer.Stop();
+
+    //6. QS = Q - ZM
+    sliceMaddTimer.Start();
+    sliceMaddMatrix(tmp,m_M,Z,Q,Orthog,-1.0);
+    sliceMaddTimer.Stop();
+    QRTimer.Start();
+    ThinQRfact (m_rr, m_S, m_Sinv, Q, tmp);
+    QRTimer.Stop();
+    
+    //7. D  = Q + D S^dag
+    m_tmp = m_S.adjoint();
+    sliceMaddTimer.Start();
+    sliceMaddMatrix(D,m_tmp,D,Q,Orthog);
+    sliceMaddTimer.Stop();
+
+    //8. C  = S C
+    m_C = m_S*m_C;
+    
+    /*********************
+     * convergence monitor
+     *********************
+     */
+    m_rr = m_C.adjoint() * m_C;
+
+    RealD max_resid=0;
+    RealD rrsum=0;
+    RealD rr;
+
+    for(int b=0;b<Nblock;b++) {
+      rrsum+=real(m_rr(b,b));
+      rr = real(m_rr(b,b))/ssq[b];
+      if ( rr > max_resid ) max_resid = rr;
+    }
+
+    std::cout << GridLogIterative << "\titeration "<<k<<" rr_sum "<<rrsum<<" ssq_sum "<< sssum
+	      <<" ave "<<std::sqrt(rrsum/sssum) << " max "<< max_resid <<std::endl;
+
+    if ( max_resid < Tolerance*Tolerance ) { 
+
+      SolverTimer.Stop();
+
+      std::cout << GridLogMessage<<"BlockCGrQ converged in "<<k<<" iterations"<<std::endl;
+
+      for(int b=0;b<Nblock;b++){
+	std::cout << GridLogMessage<< "\t\tblock "<<b<<" computed resid "
+		  << std::sqrt(real(m_rr(b,b))/ssq[b])<<std::endl;
+      }
+      std::cout << GridLogMessage<<"\tMax residual is "<<std::sqrt(max_resid)<<std::endl;
+
+      Linop.HermOp(X, AD);
+      AD = AD-B;
+      std::cout << GridLogMessage <<"\t True residual is " << std::sqrt(norm2(AD)/norm2(B)) <<std::endl;
+
+      std::cout << GridLogMessage << "Time Breakdown "<<std::endl;
+      std::cout << GridLogMessage << "\tElapsed    " << SolverTimer.Elapsed()     <<std::endl;
+      std::cout << GridLogMessage << "\tMatrix     " << MatrixTimer.Elapsed()     <<std::endl;
+      std::cout << GridLogMessage << "\tInnerProd  " << sliceInnerTimer.Elapsed() <<std::endl;
+      std::cout << GridLogMessage << "\tMaddMatrix " << sliceMaddTimer.Elapsed()  <<std::endl;
+      std::cout << GridLogMessage << "\tThinQRfact " << QRTimer.Elapsed()  <<std::endl;
+	    
+      IterationsToComplete = k;
+      return;
+    }
+
+  }
+  std::cout << GridLogMessage << "BlockConjugateGradient(rQ) did NOT converge" << std::endl;
+
+  if (ErrorOnNoConverge) assert(0);
+  IterationsToComplete = k;
+}
+//////////////////////////////////////////////////////////////////////////
+// Block conjugate gradient; Original O'Leary Dimension zero should be the block direction
+//////////////////////////////////////////////////////////////////////////
+void BlockCGsolve(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi) 
+{
+  int Orthog = blockDim; // First dimension is block dim; this is an assumption
   Nblock = Src._grid->_fdimensions[Orthog];
 
   std::cout<<GridLogMessage<<" Block Conjugate Gradient : Orthog "<<Orthog<<" Nblock "<<Nblock<<std::endl;
@@ -162,8 +419,9 @@ void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi)
      *********************
      */
     RealD max_resid=0;
+    RealD rr;
     for(int b=0;b<Nblock;b++){
-      RealD rr = real(m_rr(b,b))/ssq[b];
+      rr = real(m_rr(b,b))/ssq[b];
       if ( rr > max_resid ) max_resid = rr;
     }
     
@@ -173,13 +431,14 @@ void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi)
 
       std::cout << GridLogMessage<<"BlockCG converged in "<<k<<" iterations"<<std::endl;
       for(int b=0;b<Nblock;b++){
-	std::cout << GridLogMessage<< "\t\tblock "<<b<<" resid "<< std::sqrt(real(m_rr(b,b))/ssq[b])<<std::endl;
+	std::cout << GridLogMessage<< "\t\tblock "<<b<<" computed resid "
+		  << std::sqrt(real(m_rr(b,b))/ssq[b])<<std::endl;
       }
       std::cout << GridLogMessage<<"\tMax residual is "<<std::sqrt(max_resid)<<std::endl;
 
       Linop.HermOp(Psi, AP);
       AP = AP-Src;
-      std::cout << GridLogMessage <<"\tTrue residual is " << std::sqrt(norm2(AP)/norm2(Src)) <<std::endl;
+      std::cout << GridLogMessage <<"\t True residual is " << std::sqrt(norm2(AP)/norm2(Src)) <<std::endl;
 
       std::cout << GridLogMessage << "Time Breakdown "<<std::endl;
       std::cout << GridLogMessage << "\tElapsed    " << SolverTimer.Elapsed()     <<std::endl;
@@ -197,35 +456,13 @@ void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi)
   if (ErrorOnNoConverge) assert(0);
   IterationsToComplete = k;
 }
-};
-
-
 //////////////////////////////////////////////////////////////////////////
 // multiRHS conjugate gradient. Dimension zero should be the block direction
+// Use this for spread out across nodes
 //////////////////////////////////////////////////////////////////////////
-template <class Field>
-class MultiRHSConjugateGradient : public OperatorFunction<Field> {
- public:
-
-  typedef typename Field::scalar_type scomplex;
-
-  const int blockDim = 0;
-
-  int Nblock;
-  bool ErrorOnNoConverge;  // throw an assert when the CG fails to converge.
-                           // Defaults true.
-  RealD Tolerance;
-  Integer MaxIterations;
-  Integer IterationsToComplete; //Number of iterations the CG took to finish. Filled in upon completion
-  
-   MultiRHSConjugateGradient(RealD tol, Integer maxit, bool err_on_no_conv = true)
-    : Tolerance(tol),
-    MaxIterations(maxit),
-    ErrorOnNoConverge(err_on_no_conv){};
-
-void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi) 
+void CGmultiRHSsolve(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi) 
 {
-  int Orthog = 0; // First dimension is block dim
+  int Orthog = blockDim; // First dimension is block dim
   Nblock = Src._grid->_fdimensions[Orthog];
 
   std::cout<<GridLogMessage<<"MultiRHS Conjugate Gradient : Orthog "<<Orthog<<" Nblock "<<Nblock<<std::endl;
@@ -285,12 +522,10 @@ void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi)
     MatrixTimer.Stop();
 
     // Alpha
-    //    sliceInnerProductVectorTest(v_pAp_test,P,AP,Orthog);
     sliceInnerTimer.Start();
     sliceInnerProductVector(v_pAp,P,AP,Orthog);
     sliceInnerTimer.Stop();
     for(int b=0;b<Nblock;b++){
-      //      std::cout << " "<< v_pAp[b]<<" "<< v_pAp_test[b]<<std::endl;
       v_alpha[b] = v_rr[b]/real(v_pAp[b]);
     }
 
@@ -332,7 +567,7 @@ void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi)
 
       std::cout << GridLogMessage<<"MultiRHS solver converged in " <<k<<" iterations"<<std::endl;
       for(int b=0;b<Nblock;b++){
-	std::cout << GridLogMessage<< "\t\tBlock "<<b<<" resid "<< std::sqrt(v_rr[b]/ssq[b])<<std::endl;
+	std::cout << GridLogMessage<< "\t\tBlock "<<b<<" computed resid "<< std::sqrt(v_rr[b]/ssq[b])<<std::endl;
       }
       std::cout << GridLogMessage<<"\tMax residual is "<<std::sqrt(max_resid)<<std::endl;
 
@@ -358,9 +593,8 @@ void operator()(LinearOperatorBase<Field> &Linop, const Field &Src, Field &Psi)
   if (ErrorOnNoConverge) assert(0);
   IterationsToComplete = k;
 }
+
 };
 
-
-
 }
 #endif

lib/algorithms/iterative/EigenSort.h

@@ -1,81 +0,0 @@
-    /*************************************************************************************
-
-    Grid physics library, www.github.com/paboyle/Grid 
-
-    Source file: ./lib/algorithms/iterative/EigenSort.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 */
-#ifndef GRID_EIGENSORT_H
-#define GRID_EIGENSORT_H
-
-
-namespace Grid {
-    /////////////////////////////////////////////////////////////
-    // Eigen sorter to begin with
-    /////////////////////////////////////////////////////////////
-
-template<class Field>
-class SortEigen {
- private:
-  
-//hacking for testing for now
- private:
-  static bool less_lmd(RealD left,RealD right){
-    return left > right;
-  }  
-  static bool less_pair(std::pair<RealD,Field const*>& left,
-                        std::pair<RealD,Field const*>& right){
-    return left.first > (right.first);
-  }  
-  
-  
- public:
-
-  void push(DenseVector<RealD>& lmd,
-            DenseVector<Field>& evec,int N) {
-    DenseVector<Field> cpy(lmd.size(),evec[0]._grid);
-    for(int i=0;i<lmd.size();i++) cpy[i] = evec[i];
-    
-    DenseVector<std::pair<RealD, Field const*> > emod(lmd.size());    
-    for(int i=0;i<lmd.size();++i)
-      emod[i] = std::pair<RealD,Field const*>(lmd[i],&cpy[i]);
-
-    partial_sort(emod.begin(),emod.begin()+N,emod.end(),less_pair);
-
-    typename DenseVector<std::pair<RealD, Field const*> >::iterator it = emod.begin();
-    for(int i=0;i<N;++i){
-      lmd[i]=it->first;
-      evec[i]=*(it->second);
-      ++it;
-    }
-  }
-  void push(DenseVector<RealD>& lmd,int N) {
-    std::partial_sort(lmd.begin(),lmd.begin()+N,lmd.end(),less_lmd);
-  }
-  bool saturated(RealD lmd, RealD thrs) {
-    return fabs(lmd) > fabs(thrs);
-  }
-};
-
-}
-#endif

lib/allocator/AlignedAllocator.cc

@@ -11,7 +11,7 @@ int PointerCache::victim;
 
 void *PointerCache::Insert(void *ptr,size_t bytes) {
 
-  if (bytes < 4096 ) return NULL;
+  if (bytes < 4096 ) return ptr;
 
 #ifdef GRID_OMP
   assert(omp_in_parallel()==0);

lib/allocator/AlignedAllocator.h

@@ -92,18 +92,34 @@ public:
     size_type bytes = __n*sizeof(_Tp);
 
     _Tp *ptr = (_Tp *) PointerCache::Lookup(bytes);
-    
-#ifdef HAVE_MM_MALLOC_H
-    if ( ptr == (_Tp *) NULL ) ptr = (_Tp *) _mm_malloc(bytes,128);
-#else
-    if ( ptr == (_Tp *) NULL ) ptr = (_Tp *) memalign(128,bytes);
-#endif
+    //    if ( ptr != NULL ) 
+    //      std::cout << "alignedAllocator "<<__n << " cache hit "<< std::hex << ptr <<std::dec <<std::endl;
 
+    //////////////////
+    // Hack 2MB align; could make option probably doesn't need configurability
+    //////////////////
+//define GRID_ALLOC_ALIGN (128)
+#define GRID_ALLOC_ALIGN (2*1024*1024)
+#ifdef HAVE_MM_MALLOC_H
+    if ( ptr == (_Tp *) NULL ) ptr = (_Tp *) _mm_malloc(bytes,GRID_ALLOC_ALIGN);
+#else
+    if ( ptr == (_Tp *) NULL ) ptr = (_Tp *) memalign(GRID_ALLOC_ALIGN,bytes);
+#endif
+    //    std::cout << "alignedAllocator " << std::hex << ptr <<std::dec <<std::endl;
+    // First touch optimise in threaded loop
+    uint8_t *cp = (uint8_t *)ptr;
+#ifdef GRID_OMP
+#pragma omp parallel for
+#endif
+    for(size_type n=0;n<bytes;n+=4096){
+      cp[n]=0;
+    }
     return ptr;
   }
 
   void deallocate(pointer __p, size_type __n) { 
     size_type bytes = __n * sizeof(_Tp);
+
     pointer __freeme = (pointer)PointerCache::Insert((void *)__p,bytes);
 
 #ifdef HAVE_MM_MALLOC_H
@@ -182,10 +198,19 @@ public:
   pointer allocate(size_type __n, const void* _p= 0) 
   {
 #ifdef HAVE_MM_MALLOC_H
-    _Tp * ptr = (_Tp *) _mm_malloc(__n*sizeof(_Tp),128);
+    _Tp * ptr = (_Tp *) _mm_malloc(__n*sizeof(_Tp),GRID_ALLOC_ALIGN);
 #else
-    _Tp * ptr = (_Tp *) memalign(128,__n*sizeof(_Tp));
+    _Tp * ptr = (_Tp *) memalign(GRID_ALLOC_ALIGN,__n*sizeof(_Tp));
 #endif
+    size_type bytes = __n*sizeof(_Tp);
+    uint8_t *cp = (uint8_t *)ptr;
+    if ( ptr ) { 
+    // One touch per 4k page, static OMP loop to catch same loop order
+#pragma omp parallel for schedule(static)
+      for(size_type n=0;n<bytes;n+=4096){
+	cp[n]=0;
+      }
+    }
     return ptr;
   }
   void deallocate(pointer __p, size_type) { 

lib/cartesian/Cartesian_base.h

@@ -50,7 +50,6 @@ public:
 
     GridBase(const std::vector<int> & processor_grid) : CartesianCommunicator(processor_grid) {};
 
-
     // Physics Grid information.
     std::vector<int> _simd_layout;// Which dimensions get relayed out over simd lanes.
     std::vector<int> _fdimensions;// (full) Global dimensions of array prior to cb removal
@@ -63,13 +62,12 @@ public:
     int _isites;
     int _fsites;                  // _isites*_osites = product(dimensions).
     int _gsites;
-    std::vector<int> _slice_block;   // subslice information
+    std::vector<int> _slice_block;// subslice information
     std::vector<int> _slice_stride;
     std::vector<int> _slice_nblock;
 
-    // Might need these at some point
-    //    std::vector<int> _lstart;     // local start of array in gcoors. _processor_coor[d]*_ldimensions[d]
-    //    std::vector<int> _lend;       // local end of array in gcoors    _processor_coor[d]*_ldimensions[d]+_ldimensions_[d]-1
+    std::vector<int> _lstart;     // local start of array in gcoors _processor_coor[d]*_ldimensions[d]
+    std::vector<int> _lend  ;     // local end of array in gcoors   _processor_coor[d]*_ldimensions[d]+_ldimensions_[d]-1
 
 public:
 
@@ -176,6 +174,7 @@ public:
     inline int gSites(void) const { return _isites*_osites*_Nprocessors; }; 
     inline int Nd    (void) const { return _ndimension;};
 
+    inline const std::vector<int> LocalStarts(void)             { return _lstart;    };
     inline const std::vector<int> &FullDimensions(void)         { return _fdimensions;};
     inline const std::vector<int> &GlobalDimensions(void)       { return _gdimensions;};
     inline const std::vector<int> &LocalDimensions(void)        { return _ldimensions;};
@@ -186,17 +185,18 @@ public:
     ////////////////////////////////////////////////////////////////
 
     void show_decomposition(){
-      std::cout << GridLogMessage << "Full Dimensions    : " << _fdimensions << std::endl;
-      std::cout << GridLogMessage << "Global Dimensions  : " << _gdimensions << std::endl;
-      std::cout << GridLogMessage << "Local Dimensions   : " << _ldimensions << std::endl;
-      std::cout << GridLogMessage << "Reduced Dimensions : " << _rdimensions << std::endl;
-      std::cout << GridLogMessage << "Outer strides      : " << _ostride << std::endl;
-      std::cout << GridLogMessage << "Inner strides      : " << _istride << std::endl;
-      std::cout << GridLogMessage << "iSites             : " << _isites << std::endl;
-      std::cout << GridLogMessage << "oSites             : " << _osites << std::endl;
-      std::cout << GridLogMessage << "lSites             : " << lSites() << std::endl;        
-      std::cout << GridLogMessage << "gSites             : " << gSites() << std::endl;
-      std::cout << GridLogMessage << "Nd                 : " << _ndimension << std::endl;             
+      std::cout << GridLogMessage << "\tFull Dimensions    : " << _fdimensions << std::endl;
+      std::cout << GridLogMessage << "\tSIMD layout        : " << _simd_layout << std::endl;
+      std::cout << GridLogMessage << "\tGlobal Dimensions  : " << _gdimensions << std::endl;
+      std::cout << GridLogMessage << "\tLocal Dimensions   : " << _ldimensions << std::endl;
+      std::cout << GridLogMessage << "\tReduced Dimensions : " << _rdimensions << std::endl;
+      std::cout << GridLogMessage << "\tOuter strides      : " << _ostride << std::endl;
+      std::cout << GridLogMessage << "\tInner strides      : " << _istride << std::endl;
+      std::cout << GridLogMessage << "\tiSites             : " << _isites << std::endl;
+      std::cout << GridLogMessage << "\toSites             : " << _osites << std::endl;
+      std::cout << GridLogMessage << "\tlSites             : " << lSites() << std::endl;        
+      std::cout << GridLogMessage << "\tgSites             : " << gSites() << std::endl;
+      std::cout << GridLogMessage << "\tNd                 : " << _ndimension << std::endl;             
     } 
 
     ////////////////////////////////////////////////////////////////

lib/cartesian/Cartesian_full.h

@@ -62,73 +62,81 @@ public:
       return shift;
     }
     GridCartesian(const std::vector<int> &dimensions,
-		  const std::vector<int> &simd_layout,
-		  const std::vector<int> &processor_grid
-		  ) : GridBase(processor_grid)
+                  const std::vector<int> &simd_layout,
+                  const std::vector<int> &processor_grid) : GridBase(processor_grid)
     {
-        ///////////////////////
-        // Grid information
-        ///////////////////////
-        _ndimension = dimensions.size();
-            
-        _fdimensions.resize(_ndimension);
-        _gdimensions.resize(_ndimension);
-        _ldimensions.resize(_ndimension);
-        _rdimensions.resize(_ndimension);
-        _simd_layout.resize(_ndimension);
-            
-        _ostride.resize(_ndimension);
-        _istride.resize(_ndimension);
-            
-        _fsites = _gsites = _osites = _isites = 1;
+      ///////////////////////
+      // Grid information
+      ///////////////////////
+      _ndimension = dimensions.size();
 
-        for(int d=0;d<_ndimension;d++){
-	  _fdimensions[d] = dimensions[d]; // Global dimensions
-	  _gdimensions[d] = _fdimensions[d]; // Global dimensions
-	  _simd_layout[d] = simd_layout[d];
-	  _fsites = _fsites * _fdimensions[d];
-	  _gsites = _gsites * _gdimensions[d];
+      _fdimensions.resize(_ndimension);
+      _gdimensions.resize(_ndimension);
+      _ldimensions.resize(_ndimension);
+      _rdimensions.resize(_ndimension);
+      _simd_layout.resize(_ndimension);
+      _lstart.resize(_ndimension);
+      _lend.resize(_ndimension);
 
-	  //FIXME check for exact division
+      _ostride.resize(_ndimension);
+      _istride.resize(_ndimension);
 
-	  // Use a reduced simd grid
-	  _ldimensions[d]= _gdimensions[d]/_processors[d];  //local dimensions
-	  _rdimensions[d]= _ldimensions[d]/_simd_layout[d]; //overdecomposition
-	  _osites *= _rdimensions[d];
-	  _isites *= _simd_layout[d];
-                
-	  // Addressing support
-	  if ( d==0 ) {
-	    _ostride[d] = 1;
-	    _istride[d] = 1;
-	  } else {
-	    _ostride[d] = _ostride[d-1]*_rdimensions[d-1];
-	    _istride[d] = _istride[d-1]*_simd_layout[d-1];
-	  }
+      _fsites = _gsites = _osites = _isites = 1;
+
+      for (int d = 0; d < _ndimension; d++)
+      {
+        _fdimensions[d] = dimensions[d];   // Global dimensions
+        _gdimensions[d] = _fdimensions[d]; // Global dimensions
+        _simd_layout[d] = simd_layout[d];
+        _fsites = _fsites * _fdimensions[d];
+        _gsites = _gsites * _gdimensions[d];
+
+        // Use a reduced simd grid
+        _ldimensions[d] = _gdimensions[d] / _processors[d]; //local dimensions
+        assert(_ldimensions[d] * _processors[d] == _gdimensions[d]);
+
+        _rdimensions[d] = _ldimensions[d] / _simd_layout[d]; //overdecomposition
+        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;
+        _osites *= _rdimensions[d];
+        _isites *= _simd_layout[d];
+
+        // Addressing support
+        if (d == 0)
+        {
+          _ostride[d] = 1;
+          _istride[d] = 1;
         }
-        
-        ///////////////////////
-        // subplane information
-        ///////////////////////
-        _slice_block.resize(_ndimension);
-        _slice_stride.resize(_ndimension);
-        _slice_nblock.resize(_ndimension);
-            
-        int block =1;
-        int nblock=1;
-        for(int d=0;d<_ndimension;d++) nblock*=_rdimensions[d];
-            
-        for(int d=0;d<_ndimension;d++){
-            nblock/=_rdimensions[d];
-            _slice_block[d] =block;
-            _slice_stride[d]=_ostride[d]*_rdimensions[d];
-            _slice_nblock[d]=nblock;
-            block = block*_rdimensions[d];
+        else
+        {
+          _ostride[d] = _ostride[d - 1] * _rdimensions[d - 1];
+          _istride[d] = _istride[d - 1] * _simd_layout[d - 1];
         }
+      }
 
+      ///////////////////////
+      // subplane information
+      ///////////////////////
+      _slice_block.resize(_ndimension);
+      _slice_stride.resize(_ndimension);
+      _slice_nblock.resize(_ndimension);
+
+      int block = 1;
+      int nblock = 1;
+      for (int d = 0; d < _ndimension; d++)
+        nblock *= _rdimensions[d];
+
+      for (int d = 0; d < _ndimension; d++)
+      {
+        nblock /= _rdimensions[d];
+        _slice_block[d] = block;
+        _slice_stride[d] = _ostride[d] * _rdimensions[d];
+        _slice_nblock[d] = nblock;
+        block = block * _rdimensions[d];
+      }
     };
 };
-
-
 }
 #endif

lib/cartesian/Cartesian_red_black.h

@@ -131,132 +131,155 @@ public:
       Init(dimensions,simd_layout,processor_grid,checker_dim_mask,0);
     }
     void Init(const std::vector<int> &dimensions,
-	      const std::vector<int> &simd_layout,
-	      const std::vector<int> &processor_grid,
-	      const std::vector<int> &checker_dim_mask,
-	      int checker_dim)
+              const std::vector<int> &simd_layout,
+              const std::vector<int> &processor_grid,
+              const std::vector<int> &checker_dim_mask,
+              int checker_dim)
     {
-    ///////////////////////
-    // Grid information
-    ///////////////////////
+      ///////////////////////
+      // Grid information
+      ///////////////////////
       _checker_dim = checker_dim;
-      assert(checker_dim_mask[checker_dim]==1);
+      assert(checker_dim_mask[checker_dim] == 1);
       _ndimension = dimensions.size();
-      assert(checker_dim_mask.size()==_ndimension);
-      assert(processor_grid.size()==_ndimension);
-      assert(simd_layout.size()==_ndimension);
-      
+      assert(checker_dim_mask.size() == _ndimension);
+      assert(processor_grid.size() == _ndimension);
+      assert(simd_layout.size() == _ndimension);
+
       _fdimensions.resize(_ndimension);
       _gdimensions.resize(_ndimension);
       _ldimensions.resize(_ndimension);
       _rdimensions.resize(_ndimension);
       _simd_layout.resize(_ndimension);
-      
+      _lstart.resize(_ndimension);
+      _lend.resize(_ndimension);
+
       _ostride.resize(_ndimension);
       _istride.resize(_ndimension);
-      
+
       _fsites = _gsites = _osites = _isites = 1;
-	
-      _checker_dim_mask=checker_dim_mask;
 
-      for(int d=0;d<_ndimension;d++){
-	_fdimensions[d] = dimensions[d];
-	_gdimensions[d] = _fdimensions[d];
-	_fsites = _fsites * _fdimensions[d];
-	_gsites = _gsites * _gdimensions[d];
-        
-	if (d==_checker_dim) {
-	  _gdimensions[d] = _gdimensions[d]/2; // Remove a checkerboard
-	}
-	_ldimensions[d] = _gdimensions[d]/_processors[d];
+      _checker_dim_mask = checker_dim_mask;
 
-	// Use a reduced simd grid
-	_simd_layout[d] = simd_layout[d];
-	_rdimensions[d]= _ldimensions[d]/_simd_layout[d];
-	assert(_rdimensions[d]>0);
+      for (int d = 0; d < _ndimension; d++)
+      {
+        _fdimensions[d] = dimensions[d];
+        _gdimensions[d] = _fdimensions[d];
+        _fsites = _fsites * _fdimensions[d];
+        _gsites = _gsites * _gdimensions[d];
 
-	// all elements of a simd vector must have same checkerboard.
-	// If Ls vectorised, this must still be the case; e.g. dwf rb5d
-	if ( _simd_layout[d]>1 ) {
-	  if ( checker_dim_mask[d] ) { 
-	    assert( (_rdimensions[d]&0x1) == 0 );
-	  }
-	}
+        if (d == _checker_dim)
+        {
+          assert((_gdimensions[d] & 0x1) == 0);
+          _gdimensions[d] = _gdimensions[d] / 2; // Remove a checkerboard
+        }
+        _ldimensions[d] = _gdimensions[d] / _processors[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;
 
-	_osites *= _rdimensions[d];
-	_isites *= _simd_layout[d];
-        
-	// Addressing support
-	if ( d==0 ) {
-	  _ostride[d] = 1;
-	  _istride[d] = 1;
-	} else {
-	  _ostride[d] = _ostride[d-1]*_rdimensions[d-1];
-	  _istride[d] = _istride[d-1]*_simd_layout[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
+        assert(_rdimensions[d] * _simd_layout[d] == _ldimensions[d]);
+        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
+        if (_simd_layout[d] > 1)
+        {
+          if (checker_dim_mask[d])
+          {
+            assert((_rdimensions[d] & 0x1) == 0);
+          }
+        }
 
+        _osites *= _rdimensions[d];
+        _isites *= _simd_layout[d];
+
+        // Addressing support
+        if (d == 0)
+        {
+          _ostride[d] = 1;
+          _istride[d] = 1;
+        }
+        else
+        {
+          _ostride[d] = _ostride[d - 1] * _rdimensions[d - 1];
+          _istride[d] = _istride[d - 1] * _simd_layout[d - 1];
+        }
       }
-            
+
       ////////////////////////////////////////////////////////////////////////////////////////////
       // subplane information
       ////////////////////////////////////////////////////////////////////////////////////////////
       _slice_block.resize(_ndimension);
       _slice_stride.resize(_ndimension);
       _slice_nblock.resize(_ndimension);
-        
-      int block =1;
-      int nblock=1;
-      for(int d=0;d<_ndimension;d++) nblock*=_rdimensions[d];
-      
-      for(int d=0;d<_ndimension;d++){
-	nblock/=_rdimensions[d];
-	_slice_block[d] =block;
-	_slice_stride[d]=_ostride[d]*_rdimensions[d];
-	_slice_nblock[d]=nblock;
-	block = block*_rdimensions[d];
+
+      int block = 1;
+      int nblock = 1;
+      for (int d = 0; d < _ndimension; d++)
+        nblock *= _rdimensions[d];
+
+      for (int d = 0; d < _ndimension; d++)
+      {
+        nblock /= _rdimensions[d];
+        _slice_block[d] = block;
+        _slice_stride[d] = _ostride[d] * _rdimensions[d];
+        _slice_nblock[d] = nblock;
+        block = block * _rdimensions[d];
       }
 
       ////////////////////////////////////////////////
       // Create a checkerboard lookup table
       ////////////////////////////////////////////////
       int rvol = 1;
-      for(int d=0;d<_ndimension;d++){
-	rvol=rvol * _rdimensions[d];
+      for (int d = 0; d < _ndimension; d++)
+      {
+        rvol = rvol * _rdimensions[d];
       }
       _checker_board.resize(rvol);
-      for(int osite=0;osite<_osites;osite++){
-	_checker_board[osite] = CheckerBoardFromOindex (osite);
+      for (int osite = 0; osite < _osites; osite++)
+      {
+        _checker_board[osite] = CheckerBoardFromOindex(osite);
       }
-      
     };
-protected:
+
+  protected:
     virtual int oIndex(std::vector<int> &coor)
     {
-      int idx=0;
-      for(int d=0;d<_ndimension;d++) {
-	if( d==_checker_dim ) {
-	  idx+=_ostride[d]*((coor[d]/2)%_rdimensions[d]);
-	} else {
-	  idx+=_ostride[d]*(coor[d]%_rdimensions[d]);
-	}
+      int idx = 0;
+      for (int d = 0; d < _ndimension; d++)
+      {
+        if (d == _checker_dim)
+        {
+          idx += _ostride[d] * ((coor[d] / 2) % _rdimensions[d]);
+        }
+        else
+        {
+          idx += _ostride[d] * (coor[d] % _rdimensions[d]);
+        }
       }
       return idx;
     };
-        
+
     virtual int iIndex(std::vector<int> &lcoor)
     {
-        int idx=0;
-        for(int d=0;d<_ndimension;d++) {
-	  if( d==_checker_dim ) {
-	    idx+=_istride[d]*(lcoor[d]/(2*_rdimensions[d]));
-	  } else { 
-	    idx+=_istride[d]*(lcoor[d]/_rdimensions[d]);
-	  }
-	}
-        return idx;
+      int idx = 0;
+      for (int d = 0; d < _ndimension; d++)
+      {
+        if (d == _checker_dim)
+        {
+          idx += _istride[d] * (lcoor[d] / (2 * _rdimensions[d]));
+        }
+        else
+        {
+          idx += _istride[d] * (lcoor[d] / _rdimensions[d]);
+        }
+      }
+      return idx;
     }
 };
-
 }
 #endif

lib/communicator/Communicator_base.cc

@@ -26,6 +26,10 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
     *************************************************************************************/
     /*  END LEGAL */
 #include <Grid/GridCore.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sys/mman.h>
 
 namespace Grid {
 
@@ -33,8 +37,11 @@ namespace Grid {
 // Info that is setup once and indept of cartesian layout
 ///////////////////////////////////////////////////////////////
 void *              CartesianCommunicator::ShmCommBuf;
-uint64_t            CartesianCommunicator::MAX_MPI_SHM_BYTES   = 128*1024*1024; 
-CartesianCommunicator::CommunicatorPolicy_t  CartesianCommunicator::CommunicatorPolicy= CartesianCommunicator::CommunicatorPolicyConcurrent;
+uint64_t            CartesianCommunicator::MAX_MPI_SHM_BYTES   = 1024LL*1024LL*1024LL; 
+CartesianCommunicator::CommunicatorPolicy_t  
+CartesianCommunicator::CommunicatorPolicy= CartesianCommunicator::CommunicatorPolicyConcurrent;
+int CartesianCommunicator::nCommThreads = -1;
+int CartesianCommunicator::Hugepages = 0;
 
 /////////////////////////////////
 // Alloc, free shmem region
@@ -60,6 +67,7 @@ void CartesianCommunicator::ShmBufferFreeAll(void) {
 /////////////////////////////////
 // Grid information queries
 /////////////////////////////////
+int                      CartesianCommunicator::Dimensions(void)         { return _ndimension; };
 int                      CartesianCommunicator::IsBoss(void)            { return _processor==0; };
 int                      CartesianCommunicator::BossRank(void)          { return 0; };
 int                      CartesianCommunicator::ThisRank(void)          { return _processor; };
@@ -88,24 +96,43 @@ void CartesianCommunicator::GlobalSumVector(ComplexD *c,int N)
   GlobalSumVector((double *)c,2*N);
 }
 
-#if !defined( GRID_COMMS_MPI3) && !defined (GRID_COMMS_MPI3L)
+#if !defined( GRID_COMMS_MPI3) 
 
 int                      CartesianCommunicator::NodeCount(void)    { return ProcessorCount();};
-
-double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
-						       void *xmit,
-						       int xmit_to_rank,
-						       void *recv,
-						       int recv_from_rank,
-						       int bytes)
+int                      CartesianCommunicator::RankCount(void)    { return ProcessorCount();};
+#endif
+#if !defined( GRID_COMMS_MPI3) && !defined (GRID_COMMS_MPIT)
+double CartesianCommunicator::StencilSendToRecvFrom( void *xmit,
+						     int xmit_to_rank,
+						     void *recv,
+						     int recv_from_rank,
+						     int bytes, int dir)
 {
+  std::vector<CommsRequest_t> list;
+  // Discard the "dir"
+  SendToRecvFromBegin   (list,xmit,xmit_to_rank,recv,recv_from_rank,bytes);
+  SendToRecvFromComplete(list);
+  return 2.0*bytes;
+}
+double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
+							 void *xmit,
+							 int xmit_to_rank,
+							 void *recv,
+							 int recv_from_rank,
+							 int bytes, int dir)
+{
+  // Discard the "dir"
   SendToRecvFromBegin(list,xmit,xmit_to_rank,recv,recv_from_rank,bytes);
   return 2.0*bytes;
 }
-void CartesianCommunicator::StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall)
+void CartesianCommunicator::StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall,int dir)
 {
   SendToRecvFromComplete(waitall);
 }
+#endif
+
+#if !defined( GRID_COMMS_MPI3) 
+
 void CartesianCommunicator::StencilBarrier(void){};
 
 commVector<uint8_t> CartesianCommunicator::ShmBufStorageVector;
@@ -119,8 +146,23 @@ void *CartesianCommunicator::ShmBufferTranslate(int rank,void * local_p) {
   return NULL;
 }
 void CartesianCommunicator::ShmInitGeneric(void){
+#if 1
+
+  int mmap_flag = MAP_SHARED | MAP_ANONYMOUS;
+#ifdef MAP_HUGETLB
+  if ( Hugepages ) mmap_flag |= MAP_HUGETLB;
+#endif
+  ShmCommBuf =(void *) mmap(NULL, MAX_MPI_SHM_BYTES, PROT_READ | PROT_WRITE, mmap_flag, -1, 0); 
+  if (ShmCommBuf == (void *)MAP_FAILED) {
+    perror("mmap failed ");
+    exit(EXIT_FAILURE);  
+  }
+  if (!Hugepages ) madvise(ShmCommBuf,MAX_MPI_SHM_BYTES,MADV_HUGEPAGE);
+#else 
   ShmBufStorageVector.resize(MAX_MPI_SHM_BYTES);
   ShmCommBuf=(void *)&ShmBufStorageVector[0];
+#endif
+  bzero(ShmCommBuf,MAX_MPI_SHM_BYTES);
 }
 
 #endif

lib/communicator/Communicator_base.h

@@ -38,7 +38,7 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #ifdef GRID_COMMS_MPI3
 #include <mpi.h>
 #endif
-#ifdef GRID_COMMS_MPI3L
+#ifdef GRID_COMMS_MPIT
 #include <mpi.h>
 #endif
 #ifdef GRID_COMMS_SHMEM
@@ -50,12 +50,24 @@ namespace Grid {
 class CartesianCommunicator {
   public:    
 
-  // 65536 ranks per node adequate for now
+
+  ////////////////////////////////////////////
+  // Isend/Irecv/Wait, or Sendrecv blocking
+  ////////////////////////////////////////////
+  enum CommunicatorPolicy_t { CommunicatorPolicyConcurrent, CommunicatorPolicySequential };
+  static CommunicatorPolicy_t CommunicatorPolicy;
+  static void SetCommunicatorPolicy(CommunicatorPolicy_t policy ) { CommunicatorPolicy = policy; }
+
+  ///////////////////////////////////////////
+  // Up to 65536 ranks per node adequate for now
   // 128MB shared memory for comms enought for 48^4 local vol comms
   // Give external control (command line override?) of this
-
-  static const int      MAXLOG2RANKSPERNODE = 16;            
-  static uint64_t MAX_MPI_SHM_BYTES;
+  ///////////////////////////////////////////
+  static const int MAXLOG2RANKSPERNODE = 16;            
+  static uint64_t  MAX_MPI_SHM_BYTES;
+  static int       nCommThreads;
+  // use explicit huge pages
+  static int       Hugepages;
 
   // Communicator should know nothing of the physics grid, only processor grid.
   int              _Nprocessors;     // How many in all
@@ -64,14 +76,18 @@ class CartesianCommunicator {
   std::vector<int> _processor_coor;  // linear processor coordinate
   unsigned long _ndimension;
 
-#if defined (GRID_COMMS_MPI) || defined (GRID_COMMS_MPI3) || defined (GRID_COMMS_MPI3L)
+#if defined (GRID_COMMS_MPI) || defined (GRID_COMMS_MPI3) || defined (GRID_COMMS_MPIT)
   static MPI_Comm communicator_world;
-         MPI_Comm communicator;
+
+  MPI_Comm              communicator;
+  std::vector<MPI_Comm> communicator_halo;
+
   typedef MPI_Request CommsRequest_t;
 #else 
   typedef int CommsRequest_t;
 #endif
 
+
   ////////////////////////////////////////////////////////////////////
   // Helper functionality for SHM Windows common to all other impls
   ////////////////////////////////////////////////////////////////////
@@ -117,11 +133,7 @@ class CartesianCommunicator {
   /////////////////////////////////
   static void * ShmCommBuf;
 
-  // Isend/Irecv/Wait, or Sendrecv blocking
-  enum CommunicatorPolicy_t { CommunicatorPolicyConcurrent, CommunicatorPolicySequential };
-  static CommunicatorPolicy_t CommunicatorPolicy;
-  static void SetCommunicatorPolicy(CommunicatorPolicy_t policy ) { CommunicatorPolicy = policy; }
-
+  
   size_t heap_top;
   size_t heap_bytes;
 
@@ -148,6 +160,7 @@ class CartesianCommunicator {
   int  RankFromProcessorCoor(std::vector<int> &coor);
   void ProcessorCoorFromRank(int rank,std::vector<int> &coor);
   
+  int                      Dimensions(void)        ;
   int                      IsBoss(void)            ;
   int                      BossRank(void)          ;
   int                      ThisRank(void)          ;
@@ -155,6 +168,7 @@ class CartesianCommunicator {
   const std::vector<int> & ProcessorGrid(void)     ;
   int                      ProcessorCount(void)    ;
   int                      NodeCount(void)    ;
+  int                      RankCount(void)    ;
 
   ////////////////////////////////////////////////////////////////////////////////
   // very VERY rarely (Log, serial RNG) we need world without a grid
@@ -175,6 +189,8 @@ class CartesianCommunicator {
   void GlobalSumVector(ComplexF *c,int N);
   void GlobalSum(ComplexD &c);
   void GlobalSumVector(ComplexD *c,int N);
+  void GlobalXOR(uint32_t &);
+  void GlobalXOR(uint64_t &);
   
   template<class obj> void GlobalSum(obj &o){
     typedef typename obj::scalar_type scalar_type;
@@ -207,14 +223,21 @@ class CartesianCommunicator {
   
   void SendToRecvFromComplete(std::vector<CommsRequest_t> &waitall);
 
+  double StencilSendToRecvFrom(void *xmit,
+			       int xmit_to_rank,
+			       void *recv,
+			       int recv_from_rank,
+			       int bytes,int dir);
+
   double StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
-				  void *xmit,
-				  int xmit_to_rank,
-				  void *recv,
-				  int recv_from_rank,
-				  int bytes);
+				    void *xmit,
+				    int xmit_to_rank,
+				    void *recv,
+				    int recv_from_rank,
+				    int bytes,int dir);
   
-  void StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall);
+  
+  void StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall,int i);
   void StencilBarrier(void);
 
   ////////////////////////////////////////////////////////////

lib/communicator/Communicator_mpi.cc

@@ -83,6 +83,14 @@ void CartesianCommunicator::GlobalSum(uint64_t &u){
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT64_T,MPI_SUM,communicator);
   assert(ierr==0);
 }
+void CartesianCommunicator::GlobalXOR(uint32_t &u){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT32_T,MPI_BXOR,communicator);
+  assert(ierr==0);
+}
+void CartesianCommunicator::GlobalXOR(uint64_t &u){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT64_T,MPI_BXOR,communicator);
+  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);

lib/communicator/Communicator_mpi3.cc

@@ -37,11 +37,12 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #include <sys/ipc.h>
 #include <sys/shm.h>
 #include <sys/mman.h>
-//#include <zlib.h>
-#ifndef SHM_HUGETLB
-#define SHM_HUGETLB 04000
+#include <zlib.h>
+#ifdef HAVE_NUMAIF_H
+#include <numaif.h>
 #endif
 
+
 namespace Grid {
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
@@ -65,6 +66,7 @@ std::vector<int> CartesianCommunicator::MyGroup;
 std::vector<void *> CartesianCommunicator::ShmCommBufs;
 
 int CartesianCommunicator::NodeCount(void)    { return GroupSize;};
+int CartesianCommunicator::RankCount(void)    { return WorldSize;};
 
 
 #undef FORCE_COMMS
@@ -196,7 +198,44 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
   ShmCommBuf = 0;
   ShmCommBufs.resize(ShmSize);
 
-#if 1
+  ////////////////////////////////////////////////////////////////////////////////////////////
+  // Hugetlbf and others map filesystems as mappable huge pages
+  ////////////////////////////////////////////////////////////////////////////////////////////
+#ifdef GRID_MPI3_SHMMMAP
+  char shm_name [NAME_MAX];
+  for(int r=0;r<ShmSize;r++){
+    
+    size_t size = CartesianCommunicator::MAX_MPI_SHM_BYTES;
+    sprintf(shm_name,GRID_SHM_PATH "/Grid_mpi3_shm_%d_%d",GroupRank,r);
+    //sprintf(shm_name,"/var/lib/hugetlbfs/group/wheel/pagesize-2MB/" "Grid_mpi3_shm_%d_%d",GroupRank,r);
+    //    printf("Opening file %s \n",shm_name);
+    int fd=open(shm_name,O_RDWR|O_CREAT,0666);
+    if ( fd == -1) { 
+      printf("open %s failed\n",shm_name);
+      perror("open hugetlbfs");
+      exit(0);
+    }
+    
+    int mmap_flag = MAP_SHARED |MAP_POPULATE;
+#ifdef MAP_HUGETLB
+    if ( Hugepages ) mmap_flag |= MAP_HUGETLB;
+#endif
+    void *ptr = (void *) mmap(NULL, MAX_MPI_SHM_BYTES, PROT_READ | PROT_WRITE, mmap_flag,fd, 0); 
+    if ( ptr == (void *)MAP_FAILED ) {    
+      printf("mmap %s failed\n",shm_name);
+      perror("failed mmap");      assert(0);    
+    }
+    assert(((uint64_t)ptr&0x3F)==0);
+    ShmCommBufs[r] =ptr;
+    
+  }
+#endif
+  ////////////////////////////////////////////////////////////////////////////////////////////
+  // POSIX SHMOPEN ; as far as I know Linux does not allow EXPLICIT HugePages with this case
+  // tmpfs (Larry Meadows says) does not support explicit huge page, and this is used for 
+  // the posix shm virtual file system
+  ////////////////////////////////////////////////////////////////////////////////////////////
+#ifdef GRID_MPI3_SHMOPEN
   char shm_name [NAME_MAX];
   if ( ShmRank == 0 ) {
     for(int r=0;r<ShmSize;r++){
@@ -209,11 +248,36 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
       int fd=shm_open(shm_name,O_RDWR|O_CREAT,0666);
       if ( fd < 0 ) {	perror("failed shm_open");	assert(0);      }
       ftruncate(fd, size);
+      
+      int mmap_flag = MAP_SHARED|MAP_POPULATE;
+#ifdef MAP_HUGETLB
+      if (Hugepages) mmap_flag |= MAP_HUGETLB;
+#endif
+      void * ptr =  mmap(NULL,size, PROT_READ | PROT_WRITE, mmap_flag, fd, 0);
 
-      void * ptr =  mmap(NULL,size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-      if ( ptr == MAP_FAILED ) {       perror("failed mmap");      assert(0);    }
+      if ( ptr == (void * )MAP_FAILED ) {       perror("failed mmap");      assert(0);    }
       assert(((uint64_t)ptr&0x3F)==0);
-      ShmCommBufs[r] =ptr;
+
+// Experiments; Experiments; Try to force numa domain on the shm segment if we have numaif.h
+#if 0
+//#ifdef HAVE_NUMAIF_H
+	int status;
+	int flags=MPOL_MF_MOVE;
+#ifdef KNL
+	int nodes=1; // numa domain == MCDRAM
+	// Find out if in SNC2,SNC4 mode ?
+#else
+	int nodes=r; // numa domain == MPI ID
+#endif
+	unsigned long count=1;
+	for(uint64_t page=0;page<size;page+=4096){
+	  void *pages = (void *) ( page + (uint64_t)ptr );
+	  uint64_t *cow_it = (uint64_t *)pages;	*cow_it = 1;
+	  ierr= move_pages(0,count, &pages,&nodes,&status,flags);
+	  if (ierr && (page==0)) perror("numa relocate command failed");
+	}
+#endif
+	ShmCommBufs[r] =ptr;
       
     }
   }
@@ -235,21 +299,32 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
       ShmCommBufs[r] =ptr;
     }
   }
-
-#else
+#endif
+  ////////////////////////////////////////////////////////////////////////////////////////////
+  // SHMGET SHMAT and SHM_HUGETLB flag
+  ////////////////////////////////////////////////////////////////////////////////////////////
+#ifdef GRID_MPI3_SHMGET
   std::vector<int> shmids(ShmSize);
 
   if ( ShmRank == 0 ) {
     for(int r=0;r<ShmSize;r++){
       size_t size = CartesianCommunicator::MAX_MPI_SHM_BYTES;
-      key_t key   = 0x4545 + r;
-      if ((shmids[r]= shmget(key,size, SHM_HUGETLB | IPC_CREAT | SHM_R | SHM_W)) < 0) {
+      key_t key   = IPC_PRIVATE;
+      int flags = IPC_CREAT | SHM_R | SHM_W;
+#ifdef SHM_HUGETLB
+      if (Hugepages) flags|=SHM_HUGETLB;
+#endif
+      if ((shmids[r]= shmget(key,size, flags)) ==-1) {
 	int errsv = errno;
 	printf("Errno %d\n",errsv);
+	printf("key   %d\n",key);
+	printf("size  %lld\n",size);
+	printf("flags %d\n",flags);
 	perror("shmget");
 	exit(1);
+      } else { 
+	printf("shmid: 0x%x\n", shmids[r]);
       }
-      printf("shmid: 0x%x\n", shmids[r]);
     }
   }
   MPI_Barrier(ShmComm);
@@ -374,8 +449,14 @@ CartesianCommunicator::CartesianCommunicator(const std::vector<int> &processors)
 { 
   int ierr;
   communicator=communicator_world;
+
   _ndimension = processors.size();
 
+  communicator_halo.resize (2*_ndimension);
+  for(int i=0;i<_ndimension*2;i++){
+    MPI_Comm_dup(communicator,&communicator_halo[i]);
+  }
+
   ////////////////////////////////////////////////////////////////
   // Assert power of two shm_size.
   ////////////////////////////////////////////////////////////////
@@ -509,6 +590,14 @@ void CartesianCommunicator::GlobalSum(uint64_t &u){
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT64_T,MPI_SUM,communicator);
   assert(ierr==0);
 }
+void CartesianCommunicator::GlobalXOR(uint32_t &u){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT32_T,MPI_BXOR,communicator);
+  assert(ierr==0);
+}
+void CartesianCommunicator::GlobalXOR(uint64_t &u){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT64_T,MPI_BXOR,communicator);
+  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);
@@ -590,13 +679,27 @@ void CartesianCommunicator::SendToRecvFromBegin(std::vector<CommsRequest_t> &lis
   }
 }
 
-double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
-						       void *xmit,
-						       int dest,
-						       void *recv,
-						       int from,
-						       int bytes)
+double CartesianCommunicator::StencilSendToRecvFrom( void *xmit,
+						     int dest,
+						     void *recv,
+						     int from,
+						     int bytes,int dir)
 {
+  std::vector<CommsRequest_t> list;
+  double offbytes = StencilSendToRecvFromBegin(list,xmit,dest,recv,from,bytes,dir);
+  StencilSendToRecvFromComplete(list,dir);
+  return offbytes;
+}
+
+double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
+							 void *xmit,
+							 int dest,
+							 void *recv,
+							 int from,
+							 int bytes,int dir)
+{
+  assert(dir < communicator_halo.size());
+
   MPI_Request xrq;
   MPI_Request rrq;
 
@@ -615,26 +718,26 @@ double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsReques
   gfrom = MPI_UNDEFINED;
 #endif
   if ( gfrom ==MPI_UNDEFINED) {
-    ierr=MPI_Irecv(recv, bytes, MPI_CHAR,from,from,communicator,&rrq);
+    ierr=MPI_Irecv(recv, bytes, MPI_CHAR,from,from,communicator_halo[dir],&rrq);
     assert(ierr==0);
     list.push_back(rrq);
     off_node_bytes+=bytes;
   }
 
   if ( gdest == MPI_UNDEFINED ) {
-    ierr =MPI_Isend(xmit, bytes, MPI_CHAR,dest,_processor,communicator,&xrq);
+    ierr =MPI_Isend(xmit, bytes, MPI_CHAR,dest,_processor,communicator_halo[dir],&xrq);
     assert(ierr==0);
     list.push_back(xrq);
     off_node_bytes+=bytes;
   }
 
   if ( CommunicatorPolicy == CommunicatorPolicySequential ) { 
-    this->StencilSendToRecvFromComplete(list);
+    this->StencilSendToRecvFromComplete(list,dir);
   }
 
   return off_node_bytes;
 }
-void CartesianCommunicator::StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall)
+void CartesianCommunicator::StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall,int dir)
 {
   SendToRecvFromComplete(waitall);
 }

lib/communicator/Communicator_mpit.cc

@@ -0,0 +1,286 @@
+    /*************************************************************************************
+
+    Grid physics library, www.github.com/paboyle/Grid 
+
+    Source file: ./lib/communicator/Communicator_mpi.cc
+
+    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 */
+#include <Grid/GridCore.h>
+#include <Grid/GridQCDcore.h>
+#include <Grid/qcd/action/ActionCore.h>
+#include <mpi.h>
+
+namespace Grid {
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Info that is setup once and indept of cartesian layout
+///////////////////////////////////////////////////////////////////////////////////////////////////
+MPI_Comm CartesianCommunicator::communicator_world;
+
+// Should error check all MPI calls.
+void CartesianCommunicator::Init(int *argc, char ***argv) {
+  int flag;
+  int provided;
+  MPI_Initialized(&flag); // needed to coexist with other libs apparently
+  if ( !flag ) {
+    MPI_Init_thread(argc,argv,MPI_THREAD_MULTIPLE,&provided);
+    if ( provided != MPI_THREAD_MULTIPLE ) {
+      QCD::WilsonKernelsStatic::Comms = QCD::WilsonKernelsStatic::CommsThenCompute;
+    }
+  }
+  MPI_Comm_dup (MPI_COMM_WORLD,&communicator_world);
+  ShmInitGeneric();
+}
+
+CartesianCommunicator::CartesianCommunicator(const std::vector<int> &processors)
+{
+  _ndimension = processors.size();
+  std::vector<int> periodic(_ndimension,1);
+
+  _Nprocessors=1;
+  _processors = processors;
+  _processor_coor.resize(_ndimension);
+  
+  MPI_Cart_create(communicator_world, _ndimension,&_processors[0],&periodic[0],1,&communicator);
+  MPI_Comm_rank(communicator,&_processor);
+  MPI_Cart_coords(communicator,_processor,_ndimension,&_processor_coor[0]);
+
+  for(int i=0;i<_ndimension;i++){
+    _Nprocessors*=_processors[i];
+  }
+
+  communicator_halo.resize (2*_ndimension);
+  for(int i=0;i<_ndimension*2;i++){
+    MPI_Comm_dup(communicator,&communicator_halo[i]);
+  }
+  
+  int Size; 
+  MPI_Comm_size(communicator,&Size);
+  
+  assert(Size==_Nprocessors);
+}
+void CartesianCommunicator::GlobalSum(uint32_t &u){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT32_T,MPI_SUM,communicator);
+  assert(ierr==0);
+}
+void CartesianCommunicator::GlobalSum(uint64_t &u){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT64_T,MPI_SUM,communicator);
+  assert(ierr==0);
+}
+void CartesianCommunicator::GlobalXOR(uint32_t &u){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT32_T,MPI_BXOR,communicator);
+  assert(ierr==0);
+}
+void CartesianCommunicator::GlobalXOR(uint64_t &u){
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT64_T,MPI_BXOR,communicator);
+  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)
+{
+  int ierr=MPI_Allreduce(MPI_IN_PLACE,f,N,MPI_FLOAT,MPI_SUM,communicator);
+  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)
+{
+  int ierr = MPI_Allreduce(MPI_IN_PLACE,d,N,MPI_DOUBLE,MPI_SUM,communicator);
+  assert(ierr==0);
+}
+void CartesianCommunicator::ShiftedRanks(int dim,int shift,int &source,int &dest)
+{
+  int ierr=MPI_Cart_shift(communicator,dim,shift,&source,&dest);
+  assert(ierr==0);
+}
+int CartesianCommunicator::RankFromProcessorCoor(std::vector<int> &coor)
+{
+  int rank;
+  int ierr=MPI_Cart_rank  (communicator, &coor[0], &rank);
+  assert(ierr==0);
+  return rank;
+}
+void  CartesianCommunicator::ProcessorCoorFromRank(int rank, std::vector<int> &coor)
+{
+  coor.resize(_ndimension);
+  int ierr=MPI_Cart_coords  (communicator, rank, _ndimension,&coor[0]);
+  assert(ierr==0);
+}
+
+// Basic Halo comms primitive
+void CartesianCommunicator::SendToRecvFrom(void *xmit,
+					   int dest,
+					   void *recv,
+					   int from,
+					   int bytes)
+{
+  std::vector<CommsRequest_t> reqs(0);
+  SendToRecvFromBegin(reqs,xmit,dest,recv,from,bytes);
+  SendToRecvFromComplete(reqs);
+}
+
+void CartesianCommunicator::SendRecvPacket(void *xmit,
+					   void *recv,
+					   int sender,
+					   int receiver,
+					   int bytes)
+{
+  MPI_Status stat;
+  assert(sender != receiver);
+  int tag = sender;
+  if ( _processor == sender ) {
+    MPI_Send(xmit, bytes, MPI_CHAR,receiver,tag,communicator);
+  }
+  if ( _processor == receiver ) { 
+    MPI_Recv(recv, bytes, MPI_CHAR,sender,tag,communicator,&stat);
+  }
+}
+
+// Basic Halo comms primitive
+void CartesianCommunicator::SendToRecvFromBegin(std::vector<CommsRequest_t> &list,
+						void *xmit,
+						int dest,
+						void *recv,
+						int from,
+						int bytes)
+{
+  int myrank = _processor;
+  int ierr;
+  if ( CommunicatorPolicy == CommunicatorPolicyConcurrent ) { 
+    MPI_Request xrq;
+    MPI_Request rrq;
+
+    ierr =MPI_Irecv(recv, bytes, MPI_CHAR,from,from,communicator,&rrq);
+    ierr|=MPI_Isend(xmit, bytes, MPI_CHAR,dest,_processor,communicator,&xrq);
+    
+    assert(ierr==0);
+    list.push_back(xrq);
+    list.push_back(rrq);
+  } else { 
+    // Give the CPU to MPI immediately; can use threads to overlap optionally
+    ierr=MPI_Sendrecv(xmit,bytes,MPI_CHAR,dest,myrank,
+		      recv,bytes,MPI_CHAR,from, from,
+		      communicator,MPI_STATUS_IGNORE);
+    assert(ierr==0);
+  }
+}
+void CartesianCommunicator::SendToRecvFromComplete(std::vector<CommsRequest_t> &list)
+{
+  if ( CommunicatorPolicy == CommunicatorPolicyConcurrent ) { 
+    int nreq=list.size();
+    std::vector<MPI_Status> status(nreq);
+    int ierr = MPI_Waitall(nreq,&list[0],&status[0]);
+    assert(ierr==0);
+  }
+}
+
+void CartesianCommunicator::Barrier(void)
+{
+  int ierr = MPI_Barrier(communicator);
+  assert(ierr==0);
+}
+
+void CartesianCommunicator::Broadcast(int root,void* data, int bytes)
+{
+  int ierr=MPI_Bcast(data,
+		     bytes,
+		     MPI_BYTE,
+		     root,
+		     communicator);
+  assert(ierr==0);
+}
+  ///////////////////////////////////////////////////////
+  // Should only be used prior to Grid Init finished.
+  // Check for this?
+  ///////////////////////////////////////////////////////
+int CartesianCommunicator::RankWorld(void){ 
+  int r; 
+  MPI_Comm_rank(communicator_world,&r);
+  return r;
+}
+void CartesianCommunicator::BroadcastWorld(int root,void* data, int bytes)
+{
+  int ierr= MPI_Bcast(data,
+		      bytes,
+		      MPI_BYTE,
+		      root,
+		      communicator_world);
+  assert(ierr==0);
+}
+
+double CartesianCommunicator::StencilSendToRecvFromBegin(std::vector<CommsRequest_t> &list,
+							 void *xmit,
+							 int xmit_to_rank,
+							 void *recv,
+							 int recv_from_rank,
+							 int bytes,int dir)
+{
+  int myrank = _processor;
+  int ierr;
+  assert(dir < communicator_halo.size());
+  
+  //  std::cout << " sending on communicator "<<dir<<" " <<communicator_halo[dir]<<std::endl;
+  // Give the CPU to MPI immediately; can use threads to overlap optionally
+  MPI_Request req[2];
+  MPI_Irecv(recv,bytes,MPI_CHAR,recv_from_rank,recv_from_rank, communicator_halo[dir],&req[1]);
+  MPI_Isend(xmit,bytes,MPI_CHAR,xmit_to_rank  ,myrank        , communicator_halo[dir],&req[0]);
+
+  list.push_back(req[0]);
+  list.push_back(req[1]);
+  return 2.0*bytes;
+}
+void CartesianCommunicator::StencilSendToRecvFromComplete(std::vector<CommsRequest_t> &waitall,int dir)
+{ 
+  int nreq=waitall.size();
+  MPI_Waitall(nreq, &waitall[0], MPI_STATUSES_IGNORE);
+};
+double CartesianCommunicator::StencilSendToRecvFrom(void *xmit,
+						    int xmit_to_rank,
+						    void *recv,
+						    int recv_from_rank,
+						    int bytes,int dir)
+{
+  int myrank = _processor;
+  int ierr;
+  assert(dir < communicator_halo.size());
+  
+  //  std::cout << " sending on communicator "<<dir<<" " <<communicator_halo[dir]<<std::endl;
+  // Give the CPU to MPI immediately; can use threads to overlap optionally
+  MPI_Request req[2];
+  MPI_Irecv(recv,bytes,MPI_CHAR,recv_from_rank,recv_from_rank, communicator_halo[dir],&req[1]);
+  MPI_Isend(xmit,bytes,MPI_CHAR,xmit_to_rank  ,myrank        , communicator_halo[dir],&req[0]);
+  MPI_Waitall(2, req, MPI_STATUSES_IGNORE);
+  return 2.0*bytes;
+}
+
+
+
+}
+

lib/communicator/Communicator_none.cc

@@ -59,6 +59,8 @@ void CartesianCommunicator::GlobalSum(double &){}
 void CartesianCommunicator::GlobalSum(uint32_t &){}
 void CartesianCommunicator::GlobalSum(uint64_t &){}
 void CartesianCommunicator::GlobalSumVector(double *,int N){}
+void CartesianCommunicator::GlobalXOR(uint32_t &){}
+void CartesianCommunicator::GlobalXOR(uint64_t &){}
 
 void CartesianCommunicator::SendRecvPacket(void *xmit,
 					   void *recv,

lib/cshift/Cshift.h

@@ -42,7 +42,7 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #include <Grid/cshift/Cshift_mpi.h>
 #endif 
 
-#ifdef GRID_COMMS_MPI3L
+#ifdef GRID_COMMS_MPIT
 #include <Grid/cshift/Cshift_mpi.h>
 #endif 
 

lib/lattice/Lattice_reduction.h

@@ -1,4 +1,4 @@
- /*************************************************************************************
+/*************************************************************************************
     Grid physics library, www.github.com/paboyle/Grid 
     Source file: ./lib/lattice/Lattice_reduction.h
     Copyright (C) 2015
@@ -328,6 +328,8 @@ static void sliceMaddVector(Lattice<vobj> &R,std::vector<RealD> &a,const Lattice
   typedef typename vobj::vector_type vector_type;
   typedef typename vobj::tensor_reduced tensor_reduced;
   
+  scalar_type zscale(scale);
+
   GridBase *grid  = X._grid;
 
   int Nsimd  =grid->Nsimd();
@@ -353,7 +355,7 @@ static void sliceMaddVector(Lattice<vobj> &R,std::vector<RealD> &a,const Lattice
       grid->iCoorFromIindex(icoor,l);
       int ldx =r+icoor[orthogdim]*rd;
       scalar_type *as =(scalar_type *)&av;
-      as[l] = scalar_type(a[ldx])*scale;
+      as[l] = scalar_type(a[ldx])*zscale;
     }
 
     tensor_reduced at; at=av;
@@ -367,71 +369,7 @@ static void sliceMaddVector(Lattice<vobj> &R,std::vector<RealD> &a,const Lattice
   }
 };
 
-
 /*
-template<class vobj>
-static void sliceMaddVectorSlow (Lattice<vobj> &R,std::vector<RealD> &a,const Lattice<vobj> &X,const Lattice<vobj> &Y,
-			     int Orthog,RealD scale=1.0) 
-{    
-  // FIXME: Implementation is slow
-  // Best base the linear combination by constructing a 
-  // set of vectors of size grid->_rdimensions[Orthog].
-  typedef typename vobj::scalar_object sobj;
-  typedef typename vobj::scalar_type scalar_type;
-  typedef typename vobj::vector_type vector_type;
-  
-  int Nblock = X._grid->GlobalDimensions()[Orthog];
-  
-  GridBase *FullGrid  = X._grid;
-  GridBase *SliceGrid = makeSubSliceGrid(FullGrid,Orthog);
-  
-  Lattice<vobj> Xslice(SliceGrid);
-  Lattice<vobj> Rslice(SliceGrid);
-  // If we based this on Cshift it would work for spread out
-  // but it would be even slower
-  for(int i=0;i<Nblock;i++){
-    ExtractSlice(Rslice,Y,i,Orthog);
-    ExtractSlice(Xslice,X,i,Orthog);
-    Rslice = Rslice + Xslice*(scale*a[i]);
-    InsertSlice(Rslice,R,i,Orthog);
-  }
-};
-template<class vobj>
-static void sliceInnerProductVectorSlow( std::vector<ComplexD> & vec, const Lattice<vobj> &lhs,const Lattice<vobj> &rhs,int Orthog) 
-  {
-    // FIXME: Implementation is slow
-    // Look at localInnerProduct implementation,
-    // and do inside a site loop with block strided iterators
-    typedef typename vobj::scalar_object sobj;
-    typedef typename vobj::scalar_type scalar_type;
-    typedef typename vobj::vector_type vector_type;
-    typedef typename vobj::tensor_reduced scalar;
-    typedef typename scalar::scalar_object  scomplex;
-  
-    int Nblock = lhs._grid->GlobalDimensions()[Orthog];
-    vec.resize(Nblock);
-    std::vector<scomplex> sip(Nblock);
-    Lattice<scalar> IP(lhs._grid); 
-    IP=localInnerProduct(lhs,rhs);
-    sliceSum(IP,sip,Orthog);
-  
-    for(int ss=0;ss<Nblock;ss++){
-      vec[ss] = TensorRemove(sip[ss]);
-    }
-  }
-*/
-
-//////////////////////////////////////////////////////////////////////////////////////////
-// FIXME: Implementation is slow
-// If we based this on Cshift it would work for spread out
-// but it would be even slower
-//
-// Repeated extract slice is inefficient
-//
-// Best base the linear combination by constructing a 
-// set of vectors of size grid->_rdimensions[Orthog].
-//////////////////////////////////////////////////////////////////////////////////////////
-
 inline GridBase         *makeSubSliceGrid(const GridBase *BlockSolverGrid,int Orthog)
 {
   int NN    = BlockSolverGrid->_ndimension;
@@ -450,7 +388,7 @@ inline GridBase         *makeSubSliceGrid(const GridBase *BlockSolverGrid,int Or
   }
   return (GridBase *)new GridCartesian(latt_phys,simd_phys,mpi_phys); 
 }
-
+*/
 
 template<class vobj>
 static void sliceMaddMatrix (Lattice<vobj> &R,Eigen::MatrixXcd &aa,const Lattice<vobj> &X,const Lattice<vobj> &Y,int Orthog,RealD scale=1.0) 
@@ -460,57 +398,170 @@ static void sliceMaddMatrix (Lattice<vobj> &R,Eigen::MatrixXcd &aa,const Lattice
   typedef typename vobj::vector_type vector_type;
 
   int Nblock = X._grid->GlobalDimensions()[Orthog];
-  
+
   GridBase *FullGrid  = X._grid;
-  GridBase *SliceGrid = makeSubSliceGrid(FullGrid,Orthog);
-  
-  Lattice<vobj> Xslice(SliceGrid);
-  Lattice<vobj> Rslice(SliceGrid);
-  
-  for(int i=0;i<Nblock;i++){
-    ExtractSlice(Rslice,Y,i,Orthog);
-    for(int j=0;j<Nblock;j++){
-      ExtractSlice(Xslice,X,j,Orthog);
-      Rslice = Rslice + Xslice*(scale*aa(j,i));
-    }
-    InsertSlice(Rslice,R,i,Orthog);
+  //  GridBase *SliceGrid = makeSubSliceGrid(FullGrid,Orthog);
+
+  //  Lattice<vobj> Xslice(SliceGrid);
+  //  Lattice<vobj> Rslice(SliceGrid);
+
+  assert( FullGrid->_simd_layout[Orthog]==1);
+  int nh =  FullGrid->_ndimension;
+  //  int nl = SliceGrid->_ndimension;
+  int nl = nh-1;
+
+  //FIXME package in a convenient iterator
+  //Should loop over a plane orthogonal to direction "Orthog"
+  int stride=FullGrid->_slice_stride[Orthog];
+  int block =FullGrid->_slice_block [Orthog];
+  int nblock=FullGrid->_slice_nblock[Orthog];
+  int ostride=FullGrid->_ostride[Orthog];
+#pragma omp parallel 
+  {
+    std::vector<vobj> s_x(Nblock);
+
+#pragma omp for collapse(2)
+    for(int n=0;n<nblock;n++){
+    for(int b=0;b<block;b++){
+      int o  = n*stride + b;
+
+      for(int i=0;i<Nblock;i++){
+	s_x[i] = X[o+i*ostride];
+      }
+
+      vobj dot;
+      for(int i=0;i<Nblock;i++){
+	dot = Y[o+i*ostride];
+	for(int j=0;j<Nblock;j++){
+	  dot = dot + s_x[j]*(scale*aa(j,i));
+	}
+	R[o+i*ostride]=dot;
+      }
+    }}
   }
 };
 
+template<class vobj>
+static void sliceMulMatrix (Lattice<vobj> &R,Eigen::MatrixXcd &aa,const Lattice<vobj> &X,int Orthog,RealD scale=1.0) 
+{    
+  typedef typename vobj::scalar_object sobj;
+  typedef typename vobj::scalar_type scalar_type;
+  typedef typename vobj::vector_type vector_type;
+
+  int Nblock = X._grid->GlobalDimensions()[Orthog];
+
+  GridBase *FullGrid  = X._grid;
+  //  GridBase *SliceGrid = makeSubSliceGrid(FullGrid,Orthog);
+  //  Lattice<vobj> Xslice(SliceGrid);
+  //  Lattice<vobj> Rslice(SliceGrid);
+
+  assert( FullGrid->_simd_layout[Orthog]==1);
+  int nh =  FullGrid->_ndimension;
+  //  int nl = SliceGrid->_ndimension;
+  int nl=1;
+
+  //FIXME package in a convenient iterator
+  //Should loop over a plane orthogonal to direction "Orthog"
+  int stride=FullGrid->_slice_stride[Orthog];
+  int block =FullGrid->_slice_block [Orthog];
+  int nblock=FullGrid->_slice_nblock[Orthog];
+  int ostride=FullGrid->_ostride[Orthog];
+#pragma omp parallel 
+  {
+    std::vector<vobj> s_x(Nblock);
+
+#pragma omp for collapse(2)
+    for(int n=0;n<nblock;n++){
+    for(int b=0;b<block;b++){
+      int o  = n*stride + b;
+
+      for(int i=0;i<Nblock;i++){
+	s_x[i] = X[o+i*ostride];
+      }
+
+      vobj dot;
+      for(int i=0;i<Nblock;i++){
+	dot = s_x[0]*(scale*aa(0,i));
+	for(int j=1;j<Nblock;j++){
+	  dot = dot + s_x[j]*(scale*aa(j,i));
+	}
+	R[o+i*ostride]=dot;
+      }
+    }}
+  }
+
+};
+
+
 template<class vobj>
 static void sliceInnerProductMatrix(  Eigen::MatrixXcd &mat, const Lattice<vobj> &lhs,const Lattice<vobj> &rhs,int Orthog) 
 {
-  // FIXME: Implementation is slow
-  // Not sure of best solution.. think about it
   typedef typename vobj::scalar_object sobj;
   typedef typename vobj::scalar_type scalar_type;
   typedef typename vobj::vector_type vector_type;
   
   GridBase *FullGrid  = lhs._grid;
-  GridBase *SliceGrid = makeSubSliceGrid(FullGrid,Orthog);
+  //  GridBase *SliceGrid = makeSubSliceGrid(FullGrid,Orthog);
   
   int Nblock = FullGrid->GlobalDimensions()[Orthog];
   
-  Lattice<vobj> Lslice(SliceGrid);
-  Lattice<vobj> Rslice(SliceGrid);
+  //  Lattice<vobj> Lslice(SliceGrid);
+  //  Lattice<vobj> Rslice(SliceGrid);
   
   mat = Eigen::MatrixXcd::Zero(Nblock,Nblock);
-  
-  for(int i=0;i<Nblock;i++){
-    ExtractSlice(Lslice,lhs,i,Orthog);
-    for(int j=0;j<Nblock;j++){
-      ExtractSlice(Rslice,rhs,j,Orthog);
-      mat(i,j) = innerProduct(Lslice,Rslice);
-    }
+
+  assert( FullGrid->_simd_layout[Orthog]==1);
+  int nh =  FullGrid->_ndimension;
+  //  int nl = SliceGrid->_ndimension;
+  int nl = nh-1;
+
+  //FIXME package in a convenient iterator
+  //Should loop over a plane orthogonal to direction "Orthog"
+  int stride=FullGrid->_slice_stride[Orthog];
+  int block =FullGrid->_slice_block [Orthog];
+  int nblock=FullGrid->_slice_nblock[Orthog];
+  int ostride=FullGrid->_ostride[Orthog];
+
+  typedef typename vobj::vector_typeD vector_typeD;
+
+#pragma omp parallel 
+  {
+    std::vector<vobj> Left(Nblock);
+    std::vector<vobj> Right(Nblock);
+    Eigen::MatrixXcd  mat_thread = Eigen::MatrixXcd::Zero(Nblock,Nblock);
+
+#pragma omp for collapse(2)
+    for(int n=0;n<nblock;n++){
+    for(int b=0;b<block;b++){
+
+      int o  = n*stride + b;
+
+      for(int i=0;i<Nblock;i++){
+	Left [i] = lhs[o+i*ostride];
+	Right[i] = rhs[o+i*ostride];
+      }
+
+      for(int i=0;i<Nblock;i++){
+      for(int j=0;j<Nblock;j++){
+	auto tmp = innerProduct(Left[i],Right[j]);
+	//	vector_typeD rtmp = TensorRemove(tmp);
+	auto rtmp = TensorRemove(tmp);
+	mat_thread(i,j) += Reduce(rtmp);
+      }}
+    }}
+#pragma omp critical
+    {
+      mat += mat_thread;
+    }  
   }
-#undef FORCE_DIAG
-#ifdef FORCE_DIAG
+
   for(int i=0;i<Nblock;i++){
-    for(int j=0;j<Nblock;j++){
-      if ( i != j ) mat(i,j)=0.0;
-    }
-  }
-#endif
+  for(int j=0;j<Nblock;j++){
+    ComplexD sum = mat(i,j);
+    FullGrid->GlobalSum(sum);
+    mat(i,j)=sum;
+  }}
+
   return;
 }
 

lib/lattice/Lattice_transfer.h

@@ -551,7 +551,10 @@ void Replicate(Lattice<vobj> &coarse,Lattice<vobj> & fine)
 
 //Copy SIMD-vectorized lattice to array of scalar objects in lexicographic order
 template<typename vobj, typename sobj>
-typename std::enable_if<isSIMDvectorized<vobj>::value && !isSIMDvectorized<sobj>::value, void>::type unvectorizeToLexOrdArray(std::vector<sobj> &out, const Lattice<vobj> &in){
+typename std::enable_if<isSIMDvectorized<vobj>::value && !isSIMDvectorized<sobj>::value, void>::type 
+unvectorizeToLexOrdArray(std::vector<sobj> &out, const Lattice<vobj> &in)
+{
+
   typedef typename vobj::vector_type vtype;
   
   GridBase* in_grid = in._grid;
@@ -590,6 +593,54 @@ typename std::enable_if<isSIMDvectorized<vobj>::value && !isSIMDvectorized<sobj>
     extract1(in_vobj, out_ptrs, 0);
   }
 }
+//Copy SIMD-vectorized lattice to array of scalar objects in lexicographic order
+template<typename vobj, typename sobj>
+typename std::enable_if<isSIMDvectorized<vobj>::value 
+                    && !isSIMDvectorized<sobj>::value, void>::type 
+vectorizeFromLexOrdArray( std::vector<sobj> &in, Lattice<vobj> &out)
+{
+
+  typedef typename vobj::vector_type vtype;
+  
+  GridBase* grid = out._grid;
+  assert(in.size()==grid->lSites());
+  
+  int ndim     = grid->Nd();
+  int nsimd    = vtype::Nsimd();
+
+  std::vector<std::vector<int> > icoor(nsimd);
+      
+  for(int lane=0; lane < nsimd; lane++){
+    icoor[lane].resize(ndim);
+    grid->iCoorFromIindex(icoor[lane],lane);
+  }
+  
+  parallel_for(uint64_t oidx = 0; oidx < grid->oSites(); oidx++){ //loop over outer index
+    //Assemble vector of pointers to output elements
+    std::vector<sobj*> ptrs(nsimd);
+
+    std::vector<int> ocoor(ndim);
+    grid->oCoorFromOindex(ocoor, oidx);
+
+    std::vector<int> lcoor(grid->Nd());
+      
+    for(int lane=0; lane < nsimd; lane++){
+
+      for(int mu=0;mu<ndim;mu++){
+	lcoor[mu] = ocoor[mu] + grid->_rdimensions[mu]*icoor[lane][mu];
+      }
+
+      int lex;
+      Lexicographic::IndexFromCoor(lcoor, lex, grid->_ldimensions);
+      ptrs[lane] = &in[lex];
+    }
+    
+    //pack from those ptrs
+    vobj vecobj;
+    merge1(vecobj, ptrs, 0);
+    out._odata[oidx] = vecobj; 
+  }
+}
 
 //Convert a Lattice from one precision to another
 template<class VobjOut, class VobjIn>
@@ -615,7 +666,7 @@ void precisionChange(Lattice<VobjOut> &out, const Lattice<VobjIn> &in){
   std::vector<SobjOut> in_slex_conv(in_grid->lSites());
   unvectorizeToLexOrdArray(in_slex_conv, in);
     
-  parallel_for(int out_oidx=0;out_oidx<out_grid->oSites();out_oidx++){
+  parallel_for(uint64_t out_oidx=0;out_oidx<out_grid->oSites();out_oidx++){
     std::vector<int> out_ocoor(ndim);
     out_grid->oCoorFromOindex(out_ocoor, out_oidx);
 

lib/lattice/Lattice_unary.h

@@ -62,14 +62,20 @@ namespace Grid {
     return ret;
   }
 
-  template<class obj> Lattice<obj> expMat(const Lattice<obj> &rhs, ComplexD alpha, Integer Nexp = DEFAULT_MAT_EXP){
+  template<class obj> Lattice<obj> expMat(const Lattice<obj> &rhs, RealD alpha, Integer Nexp = DEFAULT_MAT_EXP){
     Lattice<obj> ret(rhs._grid);
     ret.checkerboard = rhs.checkerboard;
     conformable(ret,rhs);
     parallel_for(int ss=0;ss<rhs._grid->oSites();ss++){
       ret._odata[ss]=Exponentiate(rhs._odata[ss],alpha, Nexp);
     }
+
     return ret;
+
+    
+    
+
+    
   }
 
 

lib/log/Log.cc

@@ -95,7 +95,7 @@ void GridLogConfigure(std::vector<std::string> &logstreams) {
 ////////////////////////////////////////////////////////////
 void Grid_quiesce_nodes(void) {
   int me = 0;
-#if defined(GRID_COMMS_MPI) || defined(GRID_COMMS_MPI3) || defined(GRID_COMMS_MPI3L)
+#if defined(GRID_COMMS_MPI) || defined(GRID_COMMS_MPI3) || defined(GRID_COMMS_MPIT)
   MPI_Comm_rank(MPI_COMM_WORLD, &me);
 #endif
 #ifdef GRID_COMMS_SHMEM

lib/parallelIO/IldgIO.h

@@ -27,6 +27,7 @@ directory
 #ifndef GRID_ILDG_IO_H
 #define GRID_ILDG_IO_H
 
+#ifdef HAVE_LIME
 #include <algorithm>
 #include <fstream>
 #include <iomanip>
@@ -37,213 +38,677 @@ directory
 #include <sys/utsname.h>
 #include <unistd.h>
 
-#ifdef HAVE_LIME
-
-extern "C" {  // for linkage
+//C-Lime is a must have for this functionality
+extern "C" {  
 #include "lime.h"
 }
 
 namespace Grid {
 namespace QCD {
 
-inline void ILDGGrid(GridBase *grid, ILDGField &header) {
-  assert(grid->_ndimension == 4);  // emit error if not
-  header.dimension.resize(4);
-  header.boundary.resize(4);
-  for (int d = 0; d < 4; d++) {
-    header.dimension[d] = grid->_fdimensions[d];
-    // Read boundary conditions from ... ?
-    header.boundary[d] = std::string("periodic");
-  }
-}
+  /////////////////////////////////
+  // Encode word types as strings
+  /////////////////////////////////
+ template<class word> inline std::string ScidacWordMnemonic(void){ return std::string("unknown"); }
+ template<> inline std::string ScidacWordMnemonic<double>  (void){ return std::string("D"); }
+ template<> inline std::string ScidacWordMnemonic<float>   (void){ return std::string("F"); }
+ template<> inline std::string ScidacWordMnemonic< int32_t>(void){ return std::string("I32_t"); }
+ template<> inline std::string ScidacWordMnemonic<uint32_t>(void){ return std::string("U32_t"); }
+ template<> inline std::string ScidacWordMnemonic< int64_t>(void){ return std::string("I64_t"); }
+ template<> inline std::string ScidacWordMnemonic<uint64_t>(void){ return std::string("U64_t"); }
 
-inline void ILDGChecksum(uint32_t *buf, uint32_t buf_size_bytes,
-                         uint32_t &csum) {
-  BinaryIO::Uint32Checksum(buf, buf_size_bytes, csum);
-}
+  /////////////////////////////////////////
+  // Encode a generic tensor as a string
+  /////////////////////////////////////////
+ template<class vobj> std::string ScidacRecordTypeString(int &colors, int &spins, int & typesize,int &datacount) { 
 
-//////////////////////////////////////////////////////////////////////
-// Utilities ; these are QCD aware
-//////////////////////////////////////////////////////////////////////
-template <class GaugeField>
-inline void ILDGStatistics(GaugeField &data, ILDGField &header) {
-  // How to convert data precision etc...
-  header.link_trace = Grid::QCD::WilsonLoops<PeriodicGimplR>::linkTrace(data);
-  header.plaquette = Grid::QCD::WilsonLoops<PeriodicGimplR>::avgPlaquette(data);
-  // header.polyakov =
-}
+   typedef typename getPrecision<vobj>::real_scalar_type stype;
 
-// Forcing QCD here
-template <class fobj, class sobj>
-struct ILDGMunger {
-  void operator()(fobj &in, sobj &out, uint32_t &csum) {
-    for (int mu = 0; mu < 4; mu++) {
-      for (int i = 0; i < 3; i++) {
-        for (int j = 0; j < 3; j++) {
-          out(mu)()(i, j) = in(mu)()(i, j);
-        }
-      }
-    }
-    ILDGChecksum((uint32_t *)&in, sizeof(in), csum);
-  };
-};
+   int _ColourN       = indexRank<ColourIndex,vobj>();
+   int _ColourScalar  =  isScalar<ColourIndex,vobj>();
+   int _ColourVector  =  isVector<ColourIndex,vobj>();
+   int _ColourMatrix  =  isMatrix<ColourIndex,vobj>();
 
-template <class fobj, class sobj>
-struct ILDGUnmunger {
-  void operator()(sobj &in, fobj &out, uint32_t &csum) {
-    for (int mu = 0; mu < 4; mu++) {
-      for (int i = 0; i < 3; i++) {
-        for (int j = 0; j < 3; j++) {
-          out(mu)()(i, j) = in(mu)()(i, j);
-        }
-      }
-    }
-    ILDGChecksum((uint32_t *)&out, sizeof(out), csum);
-  };
-};
+   int _SpinN       = indexRank<SpinIndex,vobj>();
+   int _SpinScalar  =  isScalar<SpinIndex,vobj>();
+   int _SpinVector  =  isVector<SpinIndex,vobj>();
+   int _SpinMatrix  =  isMatrix<SpinIndex,vobj>();
 
-////////////////////////////////////////////////////////////////////////////////
-// Write and read from fstream; compute header offset for payload
-////////////////////////////////////////////////////////////////////////////////
-enum ILDGstate {ILDGread, ILDGwrite};
+   int _LorentzN       = indexRank<LorentzIndex,vobj>();
+   int _LorentzScalar  =  isScalar<LorentzIndex,vobj>();
+   int _LorentzVector  =  isVector<LorentzIndex,vobj>();
+   int _LorentzMatrix  =  isMatrix<LorentzIndex,vobj>();
 
-class ILDGIO : public BinaryIO {
-  FILE *File;
-  LimeWriter *LimeW;
-  LimeRecordHeader *LimeHeader;
-  LimeReader *LimeR;
-  std::string filename;
+   std::stringstream stream;
+
+   stream << "GRID_";
+   stream << ScidacWordMnemonic<stype>();
+
+   //   std::cout << " Lorentz N/S/V/M : " << _LorentzN<<" "<<_LorentzScalar<<"/"<<_LorentzVector<<"/"<<_LorentzMatrix<<std::endl;
+   //   std::cout << " Spin    N/S/V/M : " << _SpinN   <<" "<<_SpinScalar   <<"/"<<_SpinVector   <<"/"<<_SpinMatrix<<std::endl;
+   //   std::cout << " Colour  N/S/V/M : " << _ColourN <<" "<<_ColourScalar <<"/"<<_ColourVector <<"/"<<_ColourMatrix<<std::endl;
+
+   if ( _LorentzVector )   stream << "_LorentzVector"<<_LorentzN;
+   if ( _LorentzMatrix )   stream << "_LorentzMatrix"<<_LorentzN;
+
+   if ( _SpinVector )   stream << "_SpinVector"<<_SpinN;
+   if ( _SpinMatrix )   stream << "_SpinMatrix"<<_SpinN;
+
+   if ( _ColourVector )   stream << "_ColourVector"<<_ColourN;
+   if ( _ColourMatrix )   stream << "_ColourMatrix"<<_ColourN;
+
+   if ( _ColourScalar && _LorentzScalar && _SpinScalar )   stream << "_Complex";
 
 
+   typesize = sizeof(typename vobj::scalar_type);
+
+   if ( _ColourMatrix ) typesize*= _ColourN*_ColourN;
+   else                 typesize*= _ColourN;
+
+   if ( _SpinMatrix )   typesize*= _SpinN*_SpinN;
+   else                 typesize*= _SpinN;
+
+   colors    = _ColourN;
+   spins     = _SpinN;
+   datacount = _LorentzN;
+
+   return stream.str();
+ }
+ 
+ template<class vobj> std::string ScidacRecordTypeString(Lattice<vobj> & lat,int &colors, int &spins, int & typesize,int &datacount) { 
+   return ScidacRecordTypeString<vobj>(colors,spins,typesize,datacount);
+ };
+
+
+ ////////////////////////////////////////////////////////////
+ // Helper to fill out metadata
+ ////////////////////////////////////////////////////////////
+ template<class vobj> void ScidacMetaData(Lattice<vobj> & field,
+					  FieldMetaData &header,
+					  scidacRecord & _scidacRecord,
+					  scidacFile   & _scidacFile) 
+ {
+   typedef typename getPrecision<vobj>::real_scalar_type stype;
+
+   /////////////////////////////////////
+   // Pull Grid's metadata
+   /////////////////////////////////////
+   PrepareMetaData(field,header);
+
+   /////////////////////////////////////
+   // Scidac Private File structure
+   /////////////////////////////////////
+   _scidacFile              = scidacFile(field._grid);
+
+   /////////////////////////////////////
+   // Scidac Private Record structure
+   /////////////////////////////////////
+   scidacRecord sr;
+   sr.datatype   = ScidacRecordTypeString(field,sr.colors,sr.spins,sr.typesize,sr.datacount);
+   sr.date       = header.creation_date;
+   sr.precision  = ScidacWordMnemonic<stype>();
+   sr.recordtype = GRID_IO_FIELD;
+
+   _scidacRecord = sr;
+
+   std::cout << GridLogMessage << "Build SciDAC datatype " <<sr.datatype<<std::endl;
+ }
+ 
+ ///////////////////////////////////////////////////////
+ // Scidac checksum
+ ///////////////////////////////////////////////////////
+ static int scidacChecksumVerify(scidacChecksum &scidacChecksum_,uint32_t scidac_csuma,uint32_t scidac_csumb)
+ {
+   uint32_t scidac_checksuma = stoull(scidacChecksum_.suma,0,16);
+   uint32_t scidac_checksumb = stoull(scidacChecksum_.sumb,0,16);
+   if ( scidac_csuma !=scidac_checksuma) return 0;
+   if ( scidac_csumb !=scidac_checksumb) return 0;
+    return 1;
+ }
+
+////////////////////////////////////////////////////////////////////////////////////
+// Lime, ILDG and Scidac I/O classes
+////////////////////////////////////////////////////////////////////////////////////
+class GridLimeReader : public BinaryIO {
  public:
-  ILDGIO(std::string file, ILDGstate RW) {
-      filename = file;
-    if (RW == ILDGwrite){
-      File = fopen(file.c_str(), "w");
-      // check if opened correctly
+   ///////////////////////////////////////////////////
+   // FIXME: format for RNG? Now just binary out instead
+   ///////////////////////////////////////////////////
 
-      LimeW = limeCreateWriter(File);
-    } else {
-      File = fopen(file.c_str(), "r");
-      // check if opened correctly
+   FILE       *File;
+   LimeReader *LimeR;
+   std::string filename;
 
-      LimeR = limeCreateReader(File);
+   /////////////////////////////////////////////
+   // Open the file
+   /////////////////////////////////////////////
+   void open(std::string &_filename) 
+   {
+     filename= _filename;
+     File = fopen(filename.c_str(), "r");
+     LimeR = limeCreateReader(File);
+   }
+   /////////////////////////////////////////////
+   // Close the file
+   /////////////////////////////////////////////
+   void close(void){
+     fclose(File);
+     //     limeDestroyReader(LimeR);
+   }
+
+  ////////////////////////////////////////////
+  // Read a generic lattice field and verify checksum
+  ////////////////////////////////////////////
+  template<class vobj>
+  void readLimeLatticeBinaryObject(Lattice<vobj> &field,std::string record_name)
+  {
+    typedef typename vobj::scalar_object sobj;
+    scidacChecksum scidacChecksum_;
+    uint32_t nersc_csum,scidac_csuma,scidac_csumb;
+
+    std::string format = getFormatString<vobj>();
+
+    while ( limeReaderNextRecord(LimeR) == LIME_SUCCESS ) { 
+
+      std::cout << GridLogMessage << limeReaderType(LimeR) <<std::endl;
+	
+      if ( strncmp(limeReaderType(LimeR), record_name.c_str(),strlen(record_name.c_str()) )  ) {
+
+
+	off_t offset= ftell(File);
+	BinarySimpleMunger<sobj,sobj> munge;
+	BinaryIO::readLatticeObject< sobj, sobj >(field, filename, munge, offset, format,nersc_csum,scidac_csuma,scidac_csumb);
+
+	/////////////////////////////////////////////
+	// Insist checksum is next record
+	/////////////////////////////////////////////
+	readLimeObject(scidacChecksum_,std::string("scidacChecksum"),record_name);
+
+	/////////////////////////////////////////////
+	// Verify checksums
+	/////////////////////////////////////////////
+	scidacChecksumVerify(scidacChecksum_,scidac_csuma,scidac_csumb);
+	return;
+      }
     }
   }
+  ////////////////////////////////////////////
+  // Read a generic serialisable object
+  ////////////////////////////////////////////
+  template<class serialisable_object>
+  void readLimeObject(serialisable_object &object,std::string object_name,std::string record_name)
+  {
+    std::string xmlstring;
+    // should this be a do while; can we miss a first record??
+    while ( limeReaderNextRecord(LimeR) == LIME_SUCCESS ) { 
 
-  ~ILDGIO() { fclose(File); }
+      uint64_t nbytes = limeReaderBytes(LimeR);//size of this record (configuration)
 
-  int createHeader(std::string message, int MB, int ME, size_t PayloadSize, LimeWriter* L){
+      if ( strncmp(limeReaderType(LimeR), record_name.c_str(),strlen(record_name.c_str()) )  ) {
+	std::vector<char> xmlc(nbytes+1,'\0');
+	limeReaderReadData((void *)&xmlc[0], &nbytes, LimeR);    
+	XmlReader RD(&xmlc[0],"");
+	read(RD,object_name,object);
+	return;
+      }
+
+    }  
+    assert(0);
+  }
+};
+
+class GridLimeWriter : public BinaryIO {
+ public:
+   ///////////////////////////////////////////////////
+   // FIXME: format for RNG? Now just binary out instead
+   ///////////////////////////////////////////////////
+
+   FILE       *File;
+   LimeWriter *LimeW;
+   std::string filename;
+
+   void open(std::string &_filename) { 
+     filename= _filename;
+     File = fopen(filename.c_str(), "w");
+     LimeW = limeCreateWriter(File); assert(LimeW != NULL );
+   }
+   /////////////////////////////////////////////
+   // Close the file
+   /////////////////////////////////////////////
+   void close(void) {
+     fclose(File);
+     //  limeDestroyWriter(LimeW);
+   }
+  ///////////////////////////////////////////////////////
+  // Lime utility functions
+  ///////////////////////////////////////////////////////
+  int createLimeRecordHeader(std::string message, int MB, int ME, size_t PayloadSize)
+  {
     LimeRecordHeader *h;
     h = limeCreateHeader(MB, ME, const_cast<char *>(message.c_str()), PayloadSize);
-    int status = limeWriteRecordHeader(h, L);
-    if (status < 0) {
-      std::cerr << "ILDG Header error\n";
-      return status;
-    }
+    assert(limeWriteRecordHeader(h, LimeW) >= 0);
     limeDestroyHeader(h);
     return LIME_SUCCESS;
   }
+  ////////////////////////////////////////////
+  // Write a generic serialisable object
+  ////////////////////////////////////////////
+  template<class serialisable_object>
+  void writeLimeObject(int MB,int ME,serialisable_object &object,std::string object_name,std::string record_name)
+  {
+    std::string xmlstring;
+    {
+      XmlWriter WR("","");
+      write(WR,object_name,object);
+      xmlstring = WR.XmlString();
+    }
+    uint64_t nbytes = xmlstring.size();
+    int err;
+    LimeRecordHeader *h = limeCreateHeader(MB, ME,(char *)record_name.c_str(), nbytes); assert(h!= NULL);
 
-  unsigned int writeHeader(ILDGField &header) {
-    // write header in LIME
-    n_uint64_t nbytes;
-    int MB_flag = 1, ME_flag = 0;
+    err=limeWriteRecordHeader(h, LimeW);                    assert(err>=0);
+    err=limeWriteRecordData(&xmlstring[0], &nbytes, LimeW); assert(err>=0);
+    err=limeWriterCloseRecord(LimeW);                       assert(err>=0);
+    limeDestroyHeader(h);
+  }
+  ////////////////////////////////////////////
+  // Write a generic lattice field and csum
+  ////////////////////////////////////////////
+  template<class vobj>
+  void writeLimeLatticeBinaryObject(Lattice<vobj> &field,std::string record_name)
+  {
+    ////////////////////////////////////////////
+    // Create record header
+    ////////////////////////////////////////////
+    typedef typename vobj::scalar_object sobj;
+    int err;
+    uint32_t nersc_csum,scidac_csuma,scidac_csumb;
+    uint64_t PayloadSize = sizeof(sobj) * field._grid->_gsites;
+    createLimeRecordHeader(record_name, 0, 0, PayloadSize);
 
-    char message[] = "ildg-format";
-    nbytes = strlen(message);
-    LimeHeader = limeCreateHeader(MB_flag, ME_flag, message, nbytes);
-    limeWriteRecordHeader(LimeHeader, LimeW);
-    limeDestroyHeader(LimeHeader);
-    // save the xml header here
-    // use the xml_writer to c++ streams in pugixml
-    // and convert to char message
-    limeWriteRecordData(message, &nbytes, LimeW);
-    limeWriterCloseRecord(LimeW);
+    ////////////////////////////////////////////////////////////////////
+    // NB: FILE and iostream are jointly writing disjoint sequences in the
+    // the same file through different file handles (integer units).
+    // 
+    // These are both buffered, so why I think this code is right is as follows.
+    //
+    // i)  write record header to FILE *File, telegraphing the size. 
+    // ii) ftell reads the offset from FILE *File .
+    // iii) iostream / MPI Open independently seek this offset. Write sequence direct to disk.
+    //      Closes iostream and flushes.
+    // iv) fseek on FILE * to end of this disjoint section.
+    //  v) Continue writing scidac record.
+    ////////////////////////////////////////////////////////////////////
+    off_t offset = ftell(File);
+    std::string format = getFormatString<vobj>();
+    BinarySimpleMunger<sobj,sobj> munge;
+    BinaryIO::writeLatticeObject<vobj,sobj>(field, filename, munge, offset, format,nersc_csum,scidac_csuma,scidac_csumb);
+    err=limeWriterCloseRecord(LimeW);  assert(err>=0);
+    ////////////////////////////////////////
+    // Write checksum element, propagaing forward from the BinaryIO
+    // Always pair a checksum with a binary object, and close message
+    ////////////////////////////////////////
+    scidacChecksum checksum;
+    std::stringstream streama; streama << std::hex << scidac_csuma;
+    std::stringstream streamb; streamb << std::hex << scidac_csumb;
+    checksum.suma= streama.str();
+    checksum.sumb= streamb.str();
+    std::cout << GridLogMessage<<" writing scidac checksums "<<std::hex<<scidac_csuma<<"/"<<scidac_csumb<<std::dec<<std::endl;
+    writeLimeObject(0,1,checksum,std::string("scidacChecksum"    ),std::string(SCIDAC_CHECKSUM));
+  }
+};
 
-    return 0;
-  }
-
-  unsigned int readHeader(ILDGField &header) {
-    return 0;
+class ScidacWriter : public GridLimeWriter {
+ public:
+
+   template<class SerialisableUserFile>
+   void writeScidacFileRecord(GridBase *grid,SerialisableUserFile &_userFile)
+   {
+     scidacFile    _scidacFile(grid);
+     writeLimeObject(1,0,_scidacFile,_scidacFile.SerialisableClassName(),std::string(SCIDAC_PRIVATE_FILE_XML));
+     writeLimeObject(0,1,_userFile,_userFile.SerialisableClassName(),std::string(SCIDAC_FILE_XML));
+   }
+  ////////////////////////////////////////////////
+  // Write generic lattice field in scidac format
+  ////////////////////////////////////////////////
+   template <class vobj, class userRecord>
+  void writeScidacFieldRecord(Lattice<vobj> &field,userRecord _userRecord) 
+  {
+    typedef typename vobj::scalar_object sobj;
+    uint64_t nbytes;
+    GridBase * grid = field._grid;
+
+    ////////////////////////////////////////
+    // fill the Grid header
+    ////////////////////////////////////////
+    FieldMetaData header;
+    scidacRecord  _scidacRecord;
+    scidacFile    _scidacFile;
+
+    ScidacMetaData(field,header,_scidacRecord,_scidacFile);
+
+    //////////////////////////////////////////////
+    // Fill the Lime file record by record
+    //////////////////////////////////////////////
+    writeLimeObject(1,0,header ,std::string("FieldMetaData"),std::string(GRID_FORMAT)); // Open message 
+    writeLimeObject(0,0,_userRecord,_userRecord.SerialisableClassName(),std::string(SCIDAC_RECORD_XML));
+    writeLimeObject(0,0,_scidacRecord,_scidacRecord.SerialisableClassName(),std::string(SCIDAC_PRIVATE_RECORD_XML));
+    writeLimeLatticeBinaryObject(field,std::string(ILDG_BINARY_DATA));      // Closes message with checksum
+  }
+};
+
+class IldgWriter : public ScidacWriter {
+ public:
+
+  ///////////////////////////////////
+  // A little helper
+  ///////////////////////////////////
+  void writeLimeIldgLFN(std::string &LFN)
+  {
+    uint64_t PayloadSize = LFN.size();
+    int err;
+    createLimeRecordHeader(ILDG_DATA_LFN, 0 , 0, PayloadSize);
+    err=limeWriteRecordData(const_cast<char*>(LFN.c_str()), &PayloadSize,LimeW); assert(err>=0);
+    err=limeWriterCloseRecord(LimeW); assert(err>=0);
   }
 
+  ////////////////////////////////////////////////////////////////
+  // Special ILDG operations ; gauge configs only.
+  // Don't require scidac records EXCEPT checksum
+  // Use Grid MetaData object if present.
+  ////////////////////////////////////////////////////////////////
   template <class vsimd>
-  uint32_t readConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu) {
-    typedef Lattice<iLorentzColourMatrix<vsimd> > GaugeField;
-    typedef LorentzColourMatrixD sobjd;
-    typedef LorentzColourMatrixF sobjf;
-    typedef iLorentzColourMatrix<vsimd> itype;
-    typedef LorentzColourMatrix sobj;
-    GridBase *grid = Umu._grid;
-
-    ILDGField header;
-    readHeader(header);
-
-    // now just the conf, ignore the header
-    std::string format = std::string("IEEE64BIG");
-    do {limeReaderNextRecord(LimeR);}
-    while (strncmp(limeReaderType(LimeR), "ildg-binary-data",16));
-
-    n_uint64_t nbytes = limeReaderBytes(LimeR);//size of this record (configuration)
-
-
-    ILDGtype ILDGt(true, LimeR);
-    // this is special for double prec data, just for the moment
-    uint32_t csum = BinaryIO::readObjectParallel< itype, sobjd >(
-       Umu, filename, ILDGMunger<sobjd, sobj>(), 0, format, ILDGt);
-
-    // Check configuration 
-    // todo
-
-    return csum;
-  }
-
-  template <class vsimd>
-  uint32_t writeConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu, std::string format) {
+  void writeConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu,int sequence,std::string LFN,std::string description) 
+  {
+    GridBase * grid = Umu._grid;
     typedef Lattice<iLorentzColourMatrix<vsimd> > GaugeField;
     typedef iLorentzColourMatrix<vsimd> vobj;
     typedef typename vobj::scalar_object sobj;
-    typedef LorentzColourMatrixD fobj;
 
-    ILDGField header;
-    // fill the header
-    header.floating_point = format;
+    uint64_t nbytes;
 
-    ILDGUnmunger<fobj, sobj> munge;
-    unsigned int offset = writeHeader(header);
+    ////////////////////////////////////////
+    // fill the Grid header
+    ////////////////////////////////////////
+    FieldMetaData header;
+    scidacRecord  _scidacRecord;
+    scidacFile    _scidacFile;
 
-    BinaryIO::Uint32Checksum<vobj, fobj>(Umu, munge, header.checksum);
+    ScidacMetaData(Umu,header,_scidacRecord,_scidacFile);
 
-    // Write data record header
-    n_uint64_t PayloadSize = sizeof(fobj) * Umu._grid->_gsites;
-    createHeader("ildg-binary-data", 0, 1, PayloadSize, LimeW);
+    std::string format = header.floating_point;
+    header.ensemble_id    = description;
+    header.ensemble_label = description;
+    header.sequence_number = sequence;
+    header.ildg_lfn = LFN;
 
-    ILDGtype ILDGt(true, LimeW);
-    uint32_t csum = BinaryIO::writeObjectParallel<vobj, fobj>(
-       Umu, filename, munge, 0, header.floating_point, ILDGt);
+    assert ( (format == std::string("IEEE32BIG"))  
+           ||(format == std::string("IEEE64BIG")) );
 
-    limeWriterCloseRecord(LimeW);
+    //////////////////////////////////////////////////////
+    // Fill ILDG header data struct
+    //////////////////////////////////////////////////////
+    ildgFormat ildgfmt ;
+    ildgfmt.field     = std::string("su3gauge");
 
-    // Last record
-    // the logical file name LNF
-    // look into documentation on how to generate this string
-    std::string LNF = "empty"; 
+    if ( format == std::string("IEEE32BIG") ) { 
+      ildgfmt.precision = 32;
+    } else { 
+      ildgfmt.precision = 64;
+    }
+    ildgfmt.version = 1.0;
+    ildgfmt.lx = header.dimension[0];
+    ildgfmt.ly = header.dimension[1];
+    ildgfmt.lz = header.dimension[2];
+    ildgfmt.lt = header.dimension[3];
+    assert(header.nd==4);
+    assert(header.nd==header.dimension.size());
 
+    //////////////////////////////////////////////////////////////////////////////
+    // Fill the USQCD info field
+    //////////////////////////////////////////////////////////////////////////////
+    usqcdInfo info;
+    info.version=1.0;
+    info.plaq   = header.plaquette;
+    info.linktr = header.link_trace;
 
-    PayloadSize = sizeof(LNF);
-    createHeader("ildg-binary-lfn", 1 , 1, PayloadSize, LimeW);
-    limeWriteRecordData(const_cast<char*>(LNF.c_str()), &PayloadSize, LimeW);
-
-    limeWriterCloseRecord(LimeW);
-
-    return csum;
+    std::cout << GridLogMessage << " Writing config; IldgIO "<<std::endl;
+    //////////////////////////////////////////////
+    // Fill the Lime file record by record
+    //////////////////////////////////////////////
+    writeLimeObject(1,0,header ,std::string("FieldMetaData"),std::string(GRID_FORMAT)); // Open message 
+    writeLimeObject(0,0,_scidacFile,_scidacFile.SerialisableClassName(),std::string(SCIDAC_PRIVATE_FILE_XML));
+    writeLimeObject(0,1,info,info.SerialisableClassName(),std::string(SCIDAC_FILE_XML));
+    writeLimeObject(1,0,_scidacRecord,_scidacRecord.SerialisableClassName(),std::string(SCIDAC_PRIVATE_RECORD_XML));
+    writeLimeObject(0,0,info,info.SerialisableClassName(),std::string(SCIDAC_RECORD_XML));
+    writeLimeObject(0,0,ildgfmt,std::string("ildgFormat")   ,std::string(ILDG_FORMAT)); // rec
+    writeLimeIldgLFN(header.ildg_lfn);                                                 // rec
+    writeLimeLatticeBinaryObject(Umu,std::string(ILDG_BINARY_DATA));      // Closes message with checksum
+    //    limeDestroyWriter(LimeW);
+    fclose(File);
   }
-
-  // format for RNG? Now just binary out
 };
-}
-}
+
+class IldgReader : public GridLimeReader {
+ public:
+
+  ////////////////////////////////////////////////////////////////
+  // Read either Grid/SciDAC/ILDG configuration
+  // Don't require scidac records EXCEPT checksum
+  // Use Grid MetaData object if present.
+  // Else use ILDG MetaData object if present.
+  // Else use SciDAC MetaData object if present.
+  ////////////////////////////////////////////////////////////////
+  template <class vsimd>
+  void readConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu, FieldMetaData &FieldMetaData_) {
+
+    typedef Lattice<iLorentzColourMatrix<vsimd> > GaugeField;
+    typedef typename GaugeField::vector_object  vobj;
+    typedef typename vobj::scalar_object sobj;
+
+    typedef LorentzColourMatrixF fobj;
+    typedef LorentzColourMatrixD dobj;
+
+    GridBase *grid = Umu._grid;
+
+    std::vector<int> dims = Umu._grid->FullDimensions();
+
+    assert(dims.size()==4);
+
+    // Metadata holders
+    ildgFormat     ildgFormat_    ;
+    std::string    ildgLFN_       ;
+    scidacChecksum scidacChecksum_; 
+    usqcdInfo      usqcdInfo_     ;
+
+    // track what we read from file
+    int found_ildgFormat    =0;
+    int found_ildgLFN       =0;
+    int found_scidacChecksum=0;
+    int found_usqcdInfo     =0;
+    int found_ildgBinary =0;
+    int found_FieldMetaData =0;
+
+    uint32_t nersc_csum;
+    uint32_t scidac_csuma;
+    uint32_t scidac_csumb;
+
+    // Binary format
+    std::string format;
+
+    //////////////////////////////////////////////////////////////////////////
+    // Loop over all records
+    // -- Order is poorly guaranteed except ILDG header preceeds binary section.
+    // -- Run like an event loop.
+    // -- Impose trust hierarchy. Grid takes precedence & look for ILDG, and failing
+    //    that Scidac. 
+    // -- Insist on Scidac checksum record.
+    //////////////////////////////////////////////////////////////////////////
+
+    while ( limeReaderNextRecord(LimeR) == LIME_SUCCESS ) { 
+
+      uint64_t nbytes = limeReaderBytes(LimeR);//size of this record (configuration)
+      
+      //////////////////////////////////////////////////////////////////
+      // If not BINARY_DATA read a string and parse
+      //////////////////////////////////////////////////////////////////
+      if ( strncmp(limeReaderType(LimeR), ILDG_BINARY_DATA,strlen(ILDG_BINARY_DATA) )  ) {
+	
+	// Copy out the string
+	std::vector<char> xmlc(nbytes+1,'\0');
+	limeReaderReadData((void *)&xmlc[0], &nbytes, LimeR);    
+	std::cout << GridLogMessage<< "Non binary record :" <<limeReaderType(LimeR) <<std::endl; //<<"\n"<<(&xmlc[0])<<std::endl;
+
+	//////////////////////////////////
+	// ILDG format record
+	if ( !strncmp(limeReaderType(LimeR), ILDG_FORMAT,strlen(ILDG_FORMAT)) ) { 
+
+	  XmlReader RD(&xmlc[0],"");
+	  read(RD,"ildgFormat",ildgFormat_);
+
+	  if ( ildgFormat_.precision == 64 ) format = std::string("IEEE64BIG");
+	  if ( ildgFormat_.precision == 32 ) format = std::string("IEEE32BIG");
+
+	  assert( ildgFormat_.lx == dims[0]);
+	  assert( ildgFormat_.ly == dims[1]);
+	  assert( ildgFormat_.lz == dims[2]);
+	  assert( ildgFormat_.lt == dims[3]);
+
+	  found_ildgFormat = 1;
+	}
+
+	if ( !strncmp(limeReaderType(LimeR), ILDG_DATA_LFN,strlen(ILDG_DATA_LFN)) ) {
+	  FieldMetaData_.ildg_lfn = std::string(&xmlc[0]);
+	  found_ildgLFN = 1;
+	}
+
+	if ( !strncmp(limeReaderType(LimeR), GRID_FORMAT,strlen(ILDG_FORMAT)) ) { 
+
+	  XmlReader RD(&xmlc[0],"");
+	  read(RD,"FieldMetaData",FieldMetaData_);
+
+	  format = FieldMetaData_.floating_point;
+
+	  assert(FieldMetaData_.dimension[0] == dims[0]);
+	  assert(FieldMetaData_.dimension[1] == dims[1]);
+	  assert(FieldMetaData_.dimension[2] == dims[2]);
+	  assert(FieldMetaData_.dimension[3] == dims[3]);
+
+	  found_FieldMetaData = 1;
+	}
+
+	if ( !strncmp(limeReaderType(LimeR), SCIDAC_RECORD_XML,strlen(SCIDAC_RECORD_XML)) ) { 
+	  std::string xmls(&xmlc[0]);
+	  // is it a USQCD info field
+	  if ( xmls.find(std::string("usqcdInfo")) != std::string::npos ) { 
+	    std::cout << GridLogMessage<<"...found a usqcdInfo field"<<std::endl;
+	    XmlReader RD(&xmlc[0],"");
+	    read(RD,"usqcdInfo",usqcdInfo_);
+	    found_usqcdInfo = 1;
+	  }
+	}
+
+	if ( !strncmp(limeReaderType(LimeR), SCIDAC_CHECKSUM,strlen(SCIDAC_CHECKSUM)) ) { 
+	  XmlReader RD(&xmlc[0],"");
+	  read(RD,"scidacChecksum",scidacChecksum_);
+	  found_scidacChecksum = 1;
+	}
+
+      } else {  
+	/////////////////////////////////
+	// Binary data
+	/////////////////////////////////
+	std::cout << GridLogMessage << "ILDG Binary record found : "  ILDG_BINARY_DATA << std::endl;
+	off_t offset= ftell(File);
+
+	if ( format == std::string("IEEE64BIG") ) {
+	  GaugeSimpleMunger<dobj, sobj> munge;
+	  BinaryIO::readLatticeObject< vobj, dobj >(Umu, filename, munge, offset, format,nersc_csum,scidac_csuma,scidac_csumb);
+	} else { 
+	  GaugeSimpleMunger<fobj, sobj> munge;
+	  BinaryIO::readLatticeObject< vobj, fobj >(Umu, filename, munge, offset, format,nersc_csum,scidac_csuma,scidac_csumb);
+	}
+
+	found_ildgBinary = 1;
+      }
+
+    }
+
+    //////////////////////////////////////////////////////
+    // Minimally must find binary segment and checksum
+    // Since this is an ILDG reader require ILDG format
+    //////////////////////////////////////////////////////
+    assert(found_ildgBinary);
+    assert(found_ildgFormat);
+    assert(found_scidacChecksum);
+
+    // Must find something with the lattice dimensions
+    assert(found_FieldMetaData||found_ildgFormat);
+
+    if ( found_FieldMetaData ) {
+
+      std::cout << GridLogMessage<<"Grid MetaData was record found: configuration was probably written by Grid ! Yay ! "<<std::endl;
+
+    } else { 
+
+      assert(found_ildgFormat);
+      assert ( ildgFormat_.field == std::string("su3gauge") );
+
+      ///////////////////////////////////////////////////////////////////////////////////////
+      // Populate our Grid metadata as best we can
+      ///////////////////////////////////////////////////////////////////////////////////////
+
+      std::ostringstream vers; vers << ildgFormat_.version;
+      FieldMetaData_.hdr_version = vers.str();
+      FieldMetaData_.data_type = std::string("4D_SU3_GAUGE_3X3");
+
+      FieldMetaData_.nd=4;
+      FieldMetaData_.dimension.resize(4);
+
+      FieldMetaData_.dimension[0] = ildgFormat_.lx ;
+      FieldMetaData_.dimension[1] = ildgFormat_.ly ;
+      FieldMetaData_.dimension[2] = ildgFormat_.lz ;
+      FieldMetaData_.dimension[3] = ildgFormat_.lt ;
+
+      if ( found_usqcdInfo ) { 
+	FieldMetaData_.plaquette = usqcdInfo_.plaq;
+	FieldMetaData_.link_trace= usqcdInfo_.linktr;
+	std::cout << GridLogMessage <<"This configuration was probably written by USQCD "<<std::endl;
+	std::cout << GridLogMessage <<"USQCD xml record Plaquette : "<<FieldMetaData_.plaquette<<std::endl;
+	std::cout << GridLogMessage <<"USQCD xml record LinkTrace : "<<FieldMetaData_.link_trace<<std::endl;
+      } else { 
+	FieldMetaData_.plaquette = 0.0;
+	FieldMetaData_.link_trace= 0.0;
+	std::cout << GridLogWarning << "This configuration is unsafe with no plaquette records that can verify it !!! "<<std::endl;
+      }
+    }
+
+    ////////////////////////////////////////////////////////////
+    // Really really want to mandate a scidac checksum
+    ////////////////////////////////////////////////////////////
+    if ( found_scidacChecksum ) {
+      FieldMetaData_.scidac_checksuma = stoull(scidacChecksum_.suma,0,16);
+      FieldMetaData_.scidac_checksumb = stoull(scidacChecksum_.sumb,0,16);
+      scidacChecksumVerify(scidacChecksum_,scidac_csuma,scidac_csumb);
+      assert( scidac_csuma ==FieldMetaData_.scidac_checksuma);
+      assert( scidac_csumb ==FieldMetaData_.scidac_checksumb);
+      std::cout << GridLogMessage<<"SciDAC checksums match " << std::endl;
+    } else { 
+      std::cout << GridLogWarning<<"SciDAC checksums not found. This is unsafe. " << std::endl;
+      assert(0); // Can I insist always checksum ?
+    }
+
+    if ( found_FieldMetaData || found_usqcdInfo ) {
+      FieldMetaData checker;
+      GaugeStatistics(Umu,checker);
+      assert(fabs(checker.plaquette  - FieldMetaData_.plaquette )<1.0e-5);
+      assert(fabs(checker.link_trace - FieldMetaData_.link_trace)<1.0e-5);
+      std::cout << GridLogMessage<<"Plaquette and link trace match " << std::endl;
+    }
+  }
+ };
+
+}}
 
 //HAVE_LIME
 #endif

lib/parallelIO/IldgIOtypes.h

@@ -34,47 +34,198 @@ extern "C" { // for linkage
 
 namespace Grid {
 
-struct ILDGtype {
-  bool is_ILDG;
-  LimeWriter* LW;
-  LimeReader* LR;
+/////////////////////////////////////////////////////////////////////////////////
+// Data representation of records that enter ILDG and SciDac formats
+/////////////////////////////////////////////////////////////////////////////////
 
-  ILDGtype(bool is, LimeWriter* L) : is_ILDG(is), LW(L), LR(NULL) {}
-  ILDGtype(bool is, LimeReader* L) : is_ILDG(is), LW(NULL), LR(L) {}
-  ILDGtype() : is_ILDG(false), LW(NULL), LR(NULL) {}
-};
+#define GRID_FORMAT      "grid-format"
+#define ILDG_FORMAT      "ildg-format"
+#define ILDG_BINARY_DATA "ildg-binary-data"
+#define ILDG_DATA_LFN    "ildg-data-lfn"
+#define SCIDAC_CHECKSUM           "scidac-checksum"
+#define SCIDAC_PRIVATE_FILE_XML   "scidac-private-file-xml"
+#define SCIDAC_FILE_XML           "scidac-file-xml"
+#define SCIDAC_PRIVATE_RECORD_XML "scidac-private-record-xml"
+#define SCIDAC_RECORD_XML         "scidac-record-xml"
+#define SCIDAC_BINARY_DATA        "scidac-binary-data"
+// Unused SCIDAC records names; could move to support this functionality
+#define SCIDAC_SITELIST           "scidac-sitelist"
 
-class ILDGField {
+  ////////////////////////////////////////////////////////////
+  const int GRID_IO_SINGLEFILE = 0; // hardcode lift from QIO compat
+  const int GRID_IO_MULTIFILE  = 1; // hardcode lift from QIO compat
+  const int GRID_IO_FIELD      = 0; // hardcode lift from QIO compat
+  const int GRID_IO_GLOBAL     = 1; // hardcode lift from QIO compat
+  ////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////////////////////
+// QIO uses mandatory "private" records fixed format
+// Private is in principle "opaque" however it can't be changed now because that would break existing 
+// file compatability, so should be correct to assume the undocumented but defacto file structure.
+/////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////
+// Scidac private file xml
+// <?xml version="1.0" encoding="UTF-8"?><scidacFile><version>1.1</version><spacetime>4</spacetime><dims>16 16 16 32 </dims><volfmt>0</volfmt></scidacFile>
+////////////////////////
+struct scidacFile : Serializable {
  public:
-  // header strings (not in order)
-  std::vector<int> dimension;
-  std::vector<std::string> boundary;
-  int data_start;
-  std::string hdr_version;
-  std::string storage_format;
-  // Checks on data
-  double link_trace;
-  double plaquette;
-  uint32_t checksum;
-  unsigned int sequence_number;
-  std::string data_type;
-  std::string ensemble_id;
-  std::string ensemble_label;
-  std::string creator;
-  std::string creator_hardware;
-  std::string creation_date;
-  std::string archive_date;
-  std::string floating_point;
-};
-}
-#else
-namespace Grid {
+  GRID_SERIALIZABLE_CLASS_MEMBERS(scidacFile,
+                                  double, version,
+                                  int, spacetime,
+				  std::string, dims, // must convert to int
+                                  int, volfmt);
 
-struct ILDGtype {
-  bool is_ILDG;
-  ILDGtype() : is_ILDG(false) {}
-};
-}
+  std::vector<int> getDimensions(void) { 
+    std::stringstream stream(dims);
+    std::vector<int> dimensions;
+    int n;
+    while(stream >> n){
+      dimensions.push_back(n);
+    }
+    return dimensions;
+  }
 
+  void setDimensions(std::vector<int> dimensions) { 
+    char delimiter = ' ';
+    std::stringstream stream;
+    for(int i=0;i<dimensions.size();i++){ 
+      stream << dimensions[i];
+      if ( i != dimensions.size()-1) { 
+	stream << delimiter <<std::endl;
+      }
+    }
+    dims = stream.str();
+  }
+
+  // Constructor provides Grid
+  scidacFile() =default; // default constructor
+  scidacFile(GridBase * grid){
+    version      = 1.0;
+    spacetime    = grid->_ndimension;
+    setDimensions(grid->FullDimensions()); 
+    volfmt       = GRID_IO_SINGLEFILE;
+  }
+
+};
+
+///////////////////////////////////////////////////////////////////////
+// scidac-private-record-xml : example
+// <scidacRecord>
+// <version>1.1</version><date>Tue Jul 26 21:14:44 2011 UTC</date><recordtype>0</recordtype>
+// <datatype>QDP_D3_ColorMatrix</datatype><precision>D</precision><colors>3</colors><spins>4</spins>
+// <typesize>144</typesize><datacount>4</datacount>
+// </scidacRecord>
+///////////////////////////////////////////////////////////////////////
+
+struct scidacRecord : Serializable {
+ public:
+  GRID_SERIALIZABLE_CLASS_MEMBERS(scidacRecord,
+                                  double, version,
+                                  std::string, date,
+				  int, recordtype,
+				  std::string, datatype,
+				  std::string, precision,
+				  int, colors,
+				  int, spins,
+				  int, typesize,
+				  int, datacount);
+
+  scidacRecord() { version =1.0; }
+
+};
+
+////////////////////////
+// ILDG format
+////////////////////////
+struct ildgFormat : Serializable {
+public:
+  GRID_SERIALIZABLE_CLASS_MEMBERS(ildgFormat,
+				  double, version,
+				  std::string, field,
+				  int, precision,
+				  int, lx,
+				  int, ly,
+				  int, lz,
+				  int, lt);
+  ildgFormat() { version=1.0; };
+};
+////////////////////////
+// USQCD info
+////////////////////////
+struct usqcdInfo : Serializable { 
+ public:
+  GRID_SERIALIZABLE_CLASS_MEMBERS(usqcdInfo,
+				  double, version,
+				  double, plaq,
+				  double, linktr,
+				  std::string, info);
+  usqcdInfo() { 
+    version=1.0; 
+  };
+};
+////////////////////////
+// Scidac Checksum
+////////////////////////
+struct scidacChecksum : Serializable { 
+ public:
+  GRID_SERIALIZABLE_CLASS_MEMBERS(scidacChecksum,
+				  double, version,
+				  std::string, suma,
+				  std::string, sumb);
+  scidacChecksum() { 
+    version=1.0; 
+  };
+};
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Type:           scidac-file-xml         <title>MILC ILDG archival gauge configuration</title>
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Type:           
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////
+// Scidac private file xml 
+// <?xml version="1.0" encoding="UTF-8"?><scidacFile><version>1.1</version><spacetime>4</spacetime><dims>16 16 16 32 </dims><volfmt>0</volfmt></scidacFile> 
+////////////////////////                                                                                                                                                                              
+
+#if 0
+////////////////////////////////////////////////////////////////////////////////////////
+// From http://www.physics.utah.edu/~detar/scidac/qio_2p3.pdf
+////////////////////////////////////////////////////////////////////////////////////////
+struct usqcdPropFile : Serializable { 
+ public:
+  GRID_SERIALIZABLE_CLASS_MEMBERS(usqcdPropFile,
+				  double, version,
+				  std::string, type,
+				  std::string, info);
+  usqcdPropFile() { 
+    version=1.0; 
+  };
+};
+struct usqcdSourceInfo : Serializable { 
+ public:
+  GRID_SERIALIZABLE_CLASS_MEMBERS(usqcdSourceInfo,
+				  double, version,
+				  std::string, info);
+  usqcdSourceInfo() { 
+    version=1.0; 
+  };
+};
+struct usqcdPropInfo : Serializable { 
+ public:
+  GRID_SERIALIZABLE_CLASS_MEMBERS(usqcdPropInfo,
+				  double, version,
+				  int, spin,
+				  int, color,
+				  std::string, info);
+  usqcdPropInfo() { 
+    version=1.0; 
+  };
+};
+#endif
+
+}
 #endif
 #endif

lib/parallelIO/MetaData.h

@@ -0,0 +1,325 @@
+/*************************************************************************************
+
+    Grid physics library, www.github.com/paboyle/Grid 
+
+    Source file: ./lib/parallelIO/NerscIO.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 */
+
+#include <algorithm>
+#include <iostream>
+#include <iomanip>
+#include <fstream>
+#include <map>
+#include <unistd.h>
+#include <sys/utsname.h>
+#include <pwd.h>
+
+namespace Grid {
+
+  ///////////////////////////////////////////////////////
+  // Precision mapping
+  ///////////////////////////////////////////////////////
+  template<class vobj> static std::string getFormatString (void)
+  {
+    std::string format;
+    typedef typename getPrecision<vobj>::real_scalar_type stype;
+    if ( sizeof(stype) == sizeof(float) ) {
+      format = std::string("IEEE32BIG");
+    }
+    if ( sizeof(stype) == sizeof(double) ) {
+      format = std::string("IEEE64BIG");
+    }
+    return format;
+  }
+  ////////////////////////////////////////////////////////////////////////////////
+  // header specification/interpretation
+  ////////////////////////////////////////////////////////////////////////////////
+    class FieldMetaData : Serializable {
+    public:
+
+      GRID_SERIALIZABLE_CLASS_MEMBERS(FieldMetaData,
+				      int, nd,
+				      std::vector<int>, dimension,
+				      std::vector<std::string>, boundary,
+				      int, data_start,
+				      std::string, hdr_version,
+				      std::string, storage_format,
+				      double, link_trace,
+				      double, plaquette,
+				      uint32_t, checksum,
+				      uint32_t, scidac_checksuma,
+				      uint32_t, scidac_checksumb,
+				      unsigned int, sequence_number,
+				      std::string, data_type,
+				      std::string, ensemble_id,
+				      std::string, ensemble_label,
+				      std::string, ildg_lfn,
+				      std::string, creator,
+				      std::string, creator_hardware,
+				      std::string, creation_date,
+				      std::string, archive_date,
+				      std::string, floating_point);
+      FieldMetaData(void) { 
+	nd=4;
+	dimension.resize(4);
+	boundary.resize(4);
+      }
+    };
+
+
+
+  namespace QCD {
+
+    using namespace Grid;
+
+
+    //////////////////////////////////////////////////////////////////////
+    // Bit and Physical Checksumming and QA of data
+    //////////////////////////////////////////////////////////////////////
+    inline void GridMetaData(GridBase *grid,FieldMetaData &header)
+    {
+      int nd = grid->_ndimension;
+      header.nd = nd;
+      header.dimension.resize(nd);
+      header.boundary.resize(nd);
+      for(int d=0;d<nd;d++) {
+	header.dimension[d] = grid->_fdimensions[d];
+      }
+      for(int d=0;d<nd;d++) {
+	header.boundary[d] = std::string("PERIODIC");
+      }
+    }
+
+    inline void MachineCharacteristics(FieldMetaData &header)
+    {
+      // Who
+      struct passwd *pw = getpwuid (getuid());
+      if (pw) header.creator = std::string(pw->pw_name); 
+
+      // When
+      std::time_t t = std::time(nullptr);
+      std::tm tm_ = *std::localtime(&t);
+      std::ostringstream oss; 
+      //      oss << std::put_time(&tm_, "%c %Z");
+      header.creation_date = oss.str();
+      header.archive_date  = header.creation_date;
+
+      // What
+      struct utsname name;  uname(&name);
+      header.creator_hardware = std::string(name.nodename)+"-";
+      header.creator_hardware+= std::string(name.machine)+"-";
+      header.creator_hardware+= std::string(name.sysname)+"-";
+      header.creator_hardware+= std::string(name.release);
+    }
+
+#define dump_meta_data(field, s)					\
+      s << "BEGIN_HEADER"      << std::endl;				\
+      s << "HDR_VERSION = "    << field.hdr_version    << std::endl;	\
+      s << "DATATYPE = "       << field.data_type      << std::endl;	\
+      s << "STORAGE_FORMAT = " << field.storage_format << std::endl;	\
+      for(int i=0;i<4;i++){						\
+	s << "DIMENSION_" << i+1 << " = " << field.dimension[i] << std::endl ; \
+      }									\
+      s << "LINK_TRACE = " << std::setprecision(10) << field.link_trace << std::endl; \
+      s << "PLAQUETTE  = " << std::setprecision(10) << field.plaquette  << std::endl; \
+      for(int i=0;i<4;i++){						\
+	s << "BOUNDARY_"<<i+1<<" = " << field.boundary[i] << std::endl;	\
+      }									\
+									\
+      s << "CHECKSUM = "<< std::hex << std::setw(10) << field.checksum << std::dec<<std::endl; \
+      s << "SCIDAC_CHECKSUMA = "<< std::hex << std::setw(10) << field.scidac_checksuma << std::dec<<std::endl; \
+      s << "SCIDAC_CHECKSUMB = "<< std::hex << std::setw(10) << field.scidac_checksumb << std::dec<<std::endl; \
+      s << "ENSEMBLE_ID = "     << field.ensemble_id      << std::endl;	\
+      s << "ENSEMBLE_LABEL = "  << field.ensemble_label   << std::endl;	\
+      s << "SEQUENCE_NUMBER = " << field.sequence_number  << std::endl;	\
+      s << "CREATOR = "         << field.creator          << std::endl;	\
+      s << "CREATOR_HARDWARE = "<< field.creator_hardware << std::endl;	\
+      s << "CREATION_DATE = "   << field.creation_date    << std::endl;	\
+      s << "ARCHIVE_DATE = "    << field.archive_date     << std::endl;	\
+      s << "FLOATING_POINT = "  << field.floating_point   << std::endl;	\
+      s << "END_HEADER"         << std::endl;
+
+template<class vobj> inline void PrepareMetaData(Lattice<vobj> & field, FieldMetaData &header)
+{
+  GridBase *grid = field._grid;
+  std::string format = getFormatString<vobj>();
+   header.floating_point = format;
+   header.checksum = 0x0; // Nersc checksum unused in ILDG, Scidac
+   GridMetaData(grid,header); 
+   MachineCharacteristics(header);
+ }
+ inline void GaugeStatistics(Lattice<vLorentzColourMatrixF> & data,FieldMetaData &header)
+ {
+   // How to convert data precision etc...
+   header.link_trace=Grid::QCD::WilsonLoops<PeriodicGimplF>::linkTrace(data);
+   header.plaquette =Grid::QCD::WilsonLoops<PeriodicGimplF>::avgPlaquette(data);
+ }
+ inline void GaugeStatistics(Lattice<vLorentzColourMatrixD> & data,FieldMetaData &header)
+ {
+   // How to convert data precision etc...
+   header.link_trace=Grid::QCD::WilsonLoops<PeriodicGimplD>::linkTrace(data);
+   header.plaquette =Grid::QCD::WilsonLoops<PeriodicGimplD>::avgPlaquette(data);
+ }
+ template<> inline void PrepareMetaData<vLorentzColourMatrixF>(Lattice<vLorentzColourMatrixF> & field, FieldMetaData &header)
+ {
+   
+   GridBase *grid = field._grid;
+   std::string format = getFormatString<vLorentzColourMatrixF>();
+   header.floating_point = format;
+   header.checksum = 0x0; // Nersc checksum unused in ILDG, Scidac
+   GridMetaData(grid,header); 
+   GaugeStatistics(field,header);
+   MachineCharacteristics(header);
+ }
+ template<> inline void PrepareMetaData<vLorentzColourMatrixD>(Lattice<vLorentzColourMatrixD> & field, FieldMetaData &header)
+ {
+   GridBase *grid = field._grid;
+   std::string format = getFormatString<vLorentzColourMatrixD>();
+   header.floating_point = format;
+   header.checksum = 0x0; // Nersc checksum unused in ILDG, Scidac
+   GridMetaData(grid,header); 
+   GaugeStatistics(field,header);
+   MachineCharacteristics(header);
+ }
+
+    //////////////////////////////////////////////////////////////////////
+    // Utilities ; these are QCD aware
+    //////////////////////////////////////////////////////////////////////
+    inline void reconstruct3(LorentzColourMatrix & cm)
+    {
+      const int x=0;
+      const int y=1;
+      const int z=2;
+      for(int mu=0;mu<Nd;mu++){
+	cm(mu)()(2,x) = adj(cm(mu)()(0,y)*cm(mu)()(1,z)-cm(mu)()(0,z)*cm(mu)()(1,y)); //x= yz-zy
+	cm(mu)()(2,y) = adj(cm(mu)()(0,z)*cm(mu)()(1,x)-cm(mu)()(0,x)*cm(mu)()(1,z)); //y= zx-xz
+	cm(mu)()(2,z) = adj(cm(mu)()(0,x)*cm(mu)()(1,y)-cm(mu)()(0,y)*cm(mu)()(1,x)); //z= xy-yx
+      }
+    }
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // Some data types for intermediate storage
+    ////////////////////////////////////////////////////////////////////////////////
+    template<typename vtype> using iLorentzColour2x3 = iVector<iVector<iVector<vtype, Nc>, 2>, Nd >;
+
+    typedef iLorentzColour2x3<Complex>  LorentzColour2x3;
+    typedef iLorentzColour2x3<ComplexF> LorentzColour2x3F;
+    typedef iLorentzColour2x3<ComplexD> LorentzColour2x3D;
+
+/////////////////////////////////////////////////////////////////////////////////
+// Simple classes for precision conversion
+/////////////////////////////////////////////////////////////////////////////////
+template <class fobj, class sobj>
+struct BinarySimpleUnmunger {
+  typedef typename getPrecision<fobj>::real_scalar_type fobj_stype;
+  typedef typename getPrecision<sobj>::real_scalar_type sobj_stype;
+  
+  void operator()(sobj &in, fobj &out) {
+    // take word by word and transform accoding to the status
+    fobj_stype *out_buffer = (fobj_stype *)&out;
+    sobj_stype *in_buffer = (sobj_stype *)&in;
+    size_t fobj_words = sizeof(out) / sizeof(fobj_stype);
+    size_t sobj_words = sizeof(in) / sizeof(sobj_stype);
+    assert(fobj_words == sobj_words);
+    
+    for (unsigned int word = 0; word < sobj_words; word++)
+      out_buffer[word] = in_buffer[word];  // type conversion on the fly
+    
+  }
+};
+
+template <class fobj, class sobj>
+struct BinarySimpleMunger {
+  typedef typename getPrecision<fobj>::real_scalar_type fobj_stype;
+  typedef typename getPrecision<sobj>::real_scalar_type sobj_stype;
+
+  void operator()(fobj &in, sobj &out) {
+    // take word by word and transform accoding to the status
+    fobj_stype *in_buffer = (fobj_stype *)&in;
+    sobj_stype *out_buffer = (sobj_stype *)&out;
+    size_t fobj_words = sizeof(in) / sizeof(fobj_stype);
+    size_t sobj_words = sizeof(out) / sizeof(sobj_stype);
+    assert(fobj_words == sobj_words);
+    
+    for (unsigned int word = 0; word < sobj_words; word++)
+      out_buffer[word] = in_buffer[word];  // type conversion on the fly
+    
+  }
+};
+
+
+    template<class fobj,class sobj>
+    struct GaugeSimpleMunger{
+      void operator()(fobj &in, sobj &out) {
+        for (int mu = 0; mu < Nd; mu++) {
+          for (int i = 0; i < Nc; i++) {
+          for (int j = 0; j < Nc; j++) {
+	    out(mu)()(i, j) = in(mu)()(i, j);
+	  }}
+        }
+      };
+    };
+
+    template <class fobj, class sobj>
+    struct GaugeSimpleUnmunger {
+
+      void operator()(sobj &in, fobj &out) {
+        for (int mu = 0; mu < Nd; mu++) {
+          for (int i = 0; i < Nc; i++) {
+          for (int j = 0; j < Nc; j++) {
+	    out(mu)()(i, j) = in(mu)()(i, j);
+	  }}
+        }
+      };
+    };
+
+    template<class fobj,class sobj>
+    struct Gauge3x2munger{
+      void operator() (fobj &in,sobj &out){
+	for(int mu=0;mu<Nd;mu++){
+	  for(int i=0;i<2;i++){
+	  for(int j=0;j<3;j++){
+	    out(mu)()(i,j) = in(mu)(i)(j);
+	  }}
+	}
+	reconstruct3(out);
+      }
+    };
+
+    template<class fobj,class sobj>
+    struct Gauge3x2unmunger{
+      void operator() (sobj &in,fobj &out){
+	for(int mu=0;mu<Nd;mu++){
+	  for(int i=0;i<2;i++){
+	  for(int j=0;j<3;j++){
+	    out(mu)(i)(j) = in(mu)()(i,j);
+	  }}
+	}
+      }
+    };
+  }
+
+
+}

lib/parallelIO/NerscIO.h

@@ -30,182 +30,11 @@
 #ifndef GRID_NERSC_IO_H
 #define GRID_NERSC_IO_H
 
-#include <algorithm>
-#include <iostream>
-#include <iomanip>
-#include <fstream>
-#include <map>
-
-#include <unistd.h>
-#include <sys/utsname.h>
-#include <pwd.h>
-
 namespace Grid {
   namespace QCD {
 
     using namespace Grid;
 
-    ////////////////////////////////////////////////////////////////////////////////
-    // Some data types for intermediate storage
-    ////////////////////////////////////////////////////////////////////////////////
-    template<typename vtype> using iLorentzColour2x3 = iVector<iVector<iVector<vtype, Nc>, 2>, 4 >;
-
-    typedef iLorentzColour2x3<Complex>  LorentzColour2x3;
-    typedef iLorentzColour2x3<ComplexF> LorentzColour2x3F;
-    typedef iLorentzColour2x3<ComplexD> LorentzColour2x3D;
-
-    ////////////////////////////////////////////////////////////////////////////////
-    // header specification/interpretation
-    ////////////////////////////////////////////////////////////////////////////////
-    class NerscField {
-    public:
-      // header strings (not in order)
-      int dimension[4];
-      std::string boundary[4]; 
-      int data_start;
-      std::string hdr_version;
-      std::string storage_format;
-      // Checks on data
-      double link_trace;
-      double plaquette;
-      uint32_t checksum;
-      unsigned int sequence_number;
-      std::string data_type;
-      std::string ensemble_id ;
-      std::string ensemble_label ;
-      std::string creator ;
-      std::string creator_hardware ;
-      std::string creation_date ;
-      std::string archive_date ;
-      std::string floating_point;
-    };
-
-    //////////////////////////////////////////////////////////////////////
-    // Bit and Physical Checksumming and QA of data
-    //////////////////////////////////////////////////////////////////////
-
-    inline void NerscGrid(GridBase *grid,NerscField &header)
-    {
-      assert(grid->_ndimension==4);
-      for(int d=0;d<4;d++) {
-	header.dimension[d] = grid->_fdimensions[d];
-      }
-      for(int d=0;d<4;d++) {
-	header.boundary[d] = std::string("PERIODIC");
-      }
-    }
-    template<class GaugeField>
-    inline void NerscStatistics(GaugeField & data,NerscField &header)
-    {
-      // How to convert data precision etc...
-      header.link_trace=Grid::QCD::WilsonLoops<PeriodicGimplR>::linkTrace(data);
-      header.plaquette =Grid::QCD::WilsonLoops<PeriodicGimplR>::avgPlaquette(data);
-    }
-
-    inline void NerscMachineCharacteristics(NerscField &header)
-    {
-      // Who
-      struct passwd *pw = getpwuid (getuid());
-      if (pw) header.creator = std::string(pw->pw_name); 
-
-      // When
-      std::time_t t = std::time(nullptr);
-      std::tm tm = *std::localtime(&t);
-      std::ostringstream oss; 
-      //  oss << std::put_time(&tm, "%c %Z");
-      header.creation_date = oss.str();
-      header.archive_date  = header.creation_date;
-
-      // What
-      struct utsname name;  uname(&name);
-      header.creator_hardware = std::string(name.nodename)+"-";
-      header.creator_hardware+= std::string(name.machine)+"-";
-      header.creator_hardware+= std::string(name.sysname)+"-";
-      header.creator_hardware+= std::string(name.release);
-
-    }
-    //////////////////////////////////////////////////////////////////////
-    // Utilities ; these are QCD aware
-    //////////////////////////////////////////////////////////////////////
-    inline void NerscChecksum(uint32_t *buf,uint32_t buf_size_bytes,uint32_t &csum)
-    {
-      BinaryIO::Uint32Checksum(buf,buf_size_bytes,csum);
-    }
-    inline void reconstruct3(LorentzColourMatrix & cm)
-    {
-      const int x=0;
-      const int y=1;
-      const int z=2;
-      for(int mu=0;mu<4;mu++){
-	cm(mu)()(2,x) = adj(cm(mu)()(0,y)*cm(mu)()(1,z)-cm(mu)()(0,z)*cm(mu)()(1,y)); //x= yz-zy
-	cm(mu)()(2,y) = adj(cm(mu)()(0,z)*cm(mu)()(1,x)-cm(mu)()(0,x)*cm(mu)()(1,z)); //y= zx-xz
-	cm(mu)()(2,z) = adj(cm(mu)()(0,x)*cm(mu)()(1,y)-cm(mu)()(0,y)*cm(mu)()(1,x)); //z= xy-yx
-      }
-    }
-
-    template<class fobj,class sobj>
-    struct NerscSimpleMunger{
-      void operator()(fobj &in, sobj &out, uint32_t &csum) {
-        for (int mu = 0; mu < Nd; mu++) {
-          for (int i = 0; i < Nc; i++) {
-            for (int j = 0; j < Nc; j++) {
-              out(mu)()(i, j) = in(mu)()(i, j);
-            }
-          }
-        }
-        NerscChecksum((uint32_t *)&in, sizeof(in), csum);
-      };
-    };
-
-    template <class fobj, class sobj>
-    struct NerscSimpleUnmunger {
-      void operator()(sobj &in, fobj &out, uint32_t &csum) {
-        for (int mu = 0; mu < Nd; mu++) {
-          for (int i = 0; i < Nc; i++) {
-            for (int j = 0; j < Nc; j++) {
-              out(mu)()(i, j) = in(mu)()(i, j);
-            }
-          }
-        }
-        NerscChecksum((uint32_t *)&out, sizeof(out), csum);
-      };
-    };
-
-    template<class fobj,class sobj>
-    struct Nersc3x2munger{
-      void operator() (fobj &in,sobj &out,uint32_t &csum){
-     
-	NerscChecksum((uint32_t *)&in,sizeof(in),csum); 
-
-	for(int mu=0;mu<4;mu++){
-	  for(int i=0;i<2;i++){
-	    for(int j=0;j<3;j++){
-	      out(mu)()(i,j) = in(mu)(i)(j);
-	    }}
-	}
-	reconstruct3(out);
-      }
-    };
-
-    template<class fobj,class sobj>
-    struct Nersc3x2unmunger{
-
-      void operator() (sobj &in,fobj &out,uint32_t &csum){
-
-
-	for(int mu=0;mu<4;mu++){
-	  for(int i=0;i<2;i++){
-	    for(int j=0;j<3;j++){
-	      out(mu)(i)(j) = in(mu)()(i,j);
-	    }}
-	}
-
-	NerscChecksum((uint32_t *)&out,sizeof(out),csum); 
-
-      }
-    };
-
-
     ////////////////////////////////////////////////////////////////////////////////
     // Write and read from fstream; comput header offset for payload
     ////////////////////////////////////////////////////////////////////////////////
@@ -216,42 +45,17 @@ namespace Grid {
 	std::ofstream fout(file,std::ios::out);
       }
   
-#define dump_nersc_header(field, s)					\
-      s << "BEGIN_HEADER"      << std::endl;				\
-      s << "HDR_VERSION = "    << field.hdr_version    << std::endl;	\
-      s << "DATATYPE = "       << field.data_type      << std::endl;	\
-      s << "STORAGE_FORMAT = " << field.storage_format << std::endl;	\
-      for(int i=0;i<4;i++){						\
-	s << "DIMENSION_" << i+1 << " = " << field.dimension[i] << std::endl ; \
-      }									\
-      s << "LINK_TRACE = " << std::setprecision(10) << field.link_trace << std::endl; \
-      s << "PLAQUETTE  = " << std::setprecision(10) << field.plaquette  << std::endl; \
-      for(int i=0;i<4;i++){						\
-	s << "BOUNDARY_"<<i+1<<" = " << field.boundary[i] << std::endl;	\
-      }									\
-									\
-      s << "CHECKSUM = "<< std::hex << std::setw(10) << field.checksum << std::dec<<std::endl; \
-      s << "ENSEMBLE_ID = "     << field.ensemble_id      << std::endl;	\
-      s << "ENSEMBLE_LABEL = "  << field.ensemble_label   << std::endl;	\
-      s << "SEQUENCE_NUMBER = " << field.sequence_number  << std::endl;	\
-      s << "CREATOR = "         << field.creator          << std::endl;	\
-      s << "CREATOR_HARDWARE = "<< field.creator_hardware << std::endl;	\
-      s << "CREATION_DATE = "   << field.creation_date    << std::endl;	\
-      s << "ARCHIVE_DATE = "    << field.archive_date     << std::endl;	\
-      s << "FLOATING_POINT = "  << field.floating_point   << std::endl;	\
-      s << "END_HEADER"         << std::endl;
-  
-      static inline unsigned int writeHeader(NerscField &field,std::string file)
+      static inline unsigned int writeHeader(FieldMetaData &field,std::string file)
       {
       std::ofstream fout(file,std::ios::out|std::ios::in);
       fout.seekp(0,std::ios::beg);
-      dump_nersc_header(field, fout);
+      dump_meta_data(field, fout);
       field.data_start = fout.tellp();
       return field.data_start;
     }
 
       // for the header-reader
-      static inline int readHeader(std::string file,GridBase *grid,  NerscField &field)
+      static inline int readHeader(std::string file,GridBase *grid,  FieldMetaData &field)
       {
       int offset=0;
       std::map<std::string,std::string> header;
@@ -323,21 +127,21 @@ namespace Grid {
       return field.data_start;
     }
 
-      /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-      // Now the meat: the object readers
-      /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-#define PARALLEL_READ
-#define PARALLEL_WRITE
+    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+    // Now the meat: the object readers
+    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-      template<class vsimd>
-      static inline void readConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu,NerscField& header,std::string file)
-      {
+    template<class vsimd>
+    static inline void readConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu,
+					 FieldMetaData& header,
+					 std::string file)
+    {
       typedef Lattice<iLorentzColourMatrix<vsimd> > GaugeField;
 
       GridBase *grid = Umu._grid;
       int offset = readHeader(file,Umu._grid,header);
 
-      NerscField clone(header);
+      FieldMetaData clone(header);
 
       std::string format(header.floating_point);
 
@@ -346,76 +150,78 @@ namespace Grid {
       int ieee64big = (format == std::string("IEEE64BIG"));
       int ieee64    = (format == std::string("IEEE64"));
 
-      uint32_t csum;
+      uint32_t nersc_csum,scidac_csuma,scidac_csumb;
       // depending on datatype, set up munger;
       // munger is a function of <floating point, Real, data_type>
       if ( header.data_type == std::string("4D_SU3_GAUGE") ) {
-      if ( ieee32 || ieee32big ) {
-#ifdef PARALLEL_READ
-	csum=BinaryIO::readObjectParallel<iLorentzColourMatrix<vsimd>, LorentzColour2x3F> 
-	  (Umu,file,Nersc3x2munger<LorentzColour2x3F,LorentzColourMatrix>(), offset,format);
-#else
-	csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>, LorentzColour2x3F> 
-	  (Umu,file,Nersc3x2munger<LorentzColour2x3F,LorentzColourMatrix>(), offset,format);
-#endif
-      }
-      if ( ieee64 || ieee64big ) {
-#ifdef PARALLEL_READ
-	csum=BinaryIO::readObjectParallel<iLorentzColourMatrix<vsimd>, LorentzColour2x3D> 
-	  (Umu,file,Nersc3x2munger<LorentzColour2x3D,LorentzColourMatrix>(),offset,format);
-#else 
-	csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>, LorentzColour2x3D> 
-	  (Umu,file,Nersc3x2munger<LorentzColour2x3D,LorentzColourMatrix>(),offset,format);
-#endif
-      }
-      } else if ( header.data_type == std::string("4D_SU3_GAUGE_3x3") ) {
 	if ( ieee32 || ieee32big ) {
-#ifdef PARALLEL_READ
-	  csum=BinaryIO::readObjectParallel<iLorentzColourMatrix<vsimd>,LorentzColourMatrixF>
-	    (Umu,file,NerscSimpleMunger<LorentzColourMatrixF,LorentzColourMatrix>(),offset,format);
-#else
-	  csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>,LorentzColourMatrixF>
-	    (Umu,file,NerscSimpleMunger<LorentzColourMatrixF,LorentzColourMatrix>(),offset,format);
-#endif
+	  BinaryIO::readLatticeObject<iLorentzColourMatrix<vsimd>, LorentzColour2x3F> 
+	    (Umu,file,Gauge3x2munger<LorentzColour2x3F,LorentzColourMatrix>(), offset,format,
+	     nersc_csum,scidac_csuma,scidac_csumb);
 	}
 	if ( ieee64 || ieee64big ) {
-#ifdef PARALLEL_READ
-	  csum=BinaryIO::readObjectParallel<iLorentzColourMatrix<vsimd>,LorentzColourMatrixD>
-	    (Umu,file,NerscSimpleMunger<LorentzColourMatrixD,LorentzColourMatrix>(),offset,format);
-#else
-	  csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>,LorentzColourMatrixD>
-	    (Umu,file,NerscSimpleMunger<LorentzColourMatrixD,LorentzColourMatrix>(),offset,format);
-#endif
+	  BinaryIO::readLatticeObject<iLorentzColourMatrix<vsimd>, LorentzColour2x3D> 
+	    (Umu,file,Gauge3x2munger<LorentzColour2x3D,LorentzColourMatrix>(),offset,format,
+	     nersc_csum,scidac_csuma,scidac_csumb);
+	}
+      } else if ( header.data_type == std::string("4D_SU3_GAUGE_3x3") ) {
+	if ( ieee32 || ieee32big ) {
+	  BinaryIO::readLatticeObject<iLorentzColourMatrix<vsimd>,LorentzColourMatrixF>
+	    (Umu,file,GaugeSimpleMunger<LorentzColourMatrixF,LorentzColourMatrix>(),offset,format,
+	     nersc_csum,scidac_csuma,scidac_csumb);
+	}
+	if ( ieee64 || ieee64big ) {
+	  BinaryIO::readLatticeObject<iLorentzColourMatrix<vsimd>,LorentzColourMatrixD>
+	    (Umu,file,GaugeSimpleMunger<LorentzColourMatrixD,LorentzColourMatrix>(),offset,format,
+	     nersc_csum,scidac_csuma,scidac_csumb);
 	}
       } else {
 	assert(0);
       }
 
-      NerscStatistics<GaugeField>(Umu,clone);
+      GaugeStatistics(Umu,clone);
 
-      std::cout<<GridLogMessage <<"NERSC Configuration "<<file<<" checksum "<<std::hex<<            csum<< std::dec
+      std::cout<<GridLogMessage <<"NERSC Configuration "<<file<<" checksum "<<std::hex<<nersc_csum<< std::dec
 	       <<" header   "<<std::hex<<header.checksum<<std::dec <<std::endl;
       std::cout<<GridLogMessage <<"NERSC Configuration "<<file<<" plaquette "<<clone.plaquette
 	       <<" header    "<<header.plaquette<<std::endl;
       std::cout<<GridLogMessage <<"NERSC Configuration "<<file<<" link_trace "<<clone.link_trace
 	       <<" header    "<<header.link_trace<<std::endl;
+
+      if ( fabs(clone.plaquette -header.plaquette ) >=  1.0e-5 ) { 
+	std::cout << " Plaquette mismatch "<<std::endl;
+	std::cout << Umu[0]<<std::endl;
+	std::cout << Umu[1]<<std::endl;
+      }
+      if ( nersc_csum != header.checksum ) { 
+	std::cerr << " checksum mismatch " << std::endl;
+	std::cerr << " plaqs " << clone.plaquette << " " << header.plaquette << std::endl;
+	std::cerr << " trace " << clone.link_trace<< " " << header.link_trace<< std::endl;
+	std::cerr << " nersc_csum  " <<std::hex<< nersc_csum << " " << header.checksum<< std::dec<< std::endl;
+	exit(0);
+      }
       assert(fabs(clone.plaquette -header.plaquette ) < 1.0e-5 );
       assert(fabs(clone.link_trace-header.link_trace) < 1.0e-6 );
-      assert(csum == header.checksum );
-
+      assert(nersc_csum == header.checksum );
+      
       std::cout<<GridLogMessage <<"NERSC Configuration "<<file<< " and plaquette, link trace, and checksum agree"<<std::endl;
-      }
+    }
 
       template<class vsimd>
-      static inline void writeConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu,std::string file, int two_row,int bits32)
+      static inline void writeConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu,
+					    std::string file, 
+					    int two_row,
+					    int bits32)
       {
 	typedef Lattice<iLorentzColourMatrix<vsimd> > GaugeField;
 
 	typedef iLorentzColourMatrix<vsimd> vobj;
 	typedef typename vobj::scalar_object sobj;
 
+	FieldMetaData header;
+	///////////////////////////////////////////
 	// Following should become arguments
-	NerscField header;
+	///////////////////////////////////////////
 	header.sequence_number = 1;
 	header.ensemble_id     = "UKQCD";
 	header.ensemble_label  = "DWF";
@@ -425,45 +231,32 @@ namespace Grid {
   
 	GridBase *grid = Umu._grid;
 
-	NerscGrid(grid,header);
-	NerscStatistics<GaugeField>(Umu,header);
-	NerscMachineCharacteristics(header);
+	GridMetaData(grid,header);
+	assert(header.nd==4);
+	GaugeStatistics(Umu,header);
+	MachineCharacteristics(header);
 
-	uint32_t csum;
 	int offset;
   
 	truncate(file);
 
-	if ( two_row ) { 
+	// Sod it -- always write 3x3 double
+	header.floating_point = std::string("IEEE64BIG");
+	header.data_type      = std::string("4D_SU3_GAUGE_3x3");
+	GaugeSimpleUnmunger<fobj3D,sobj> munge;
+	offset = writeHeader(header,file);
 
-	  header.floating_point = std::string("IEEE64BIG");
-	  header.data_type      = std::string("4D_SU3_GAUGE");
-	  Nersc3x2unmunger<fobj2D,sobj> munge;
-	  BinaryIO::Uint32Checksum<vobj,fobj2D>(Umu, munge,header.checksum);
-	  offset = writeHeader(header,file);
-#ifdef PARALLEL_WRITE
-	  csum=BinaryIO::writeObjectParallel<vobj,fobj2D>(Umu,file,munge,offset,header.floating_point);
-#else
-	  csum=BinaryIO::writeObjectSerial<vobj,fobj2D>(Umu,file,munge,offset,header.floating_point);
-#endif
-	} else { 
-	  header.floating_point = std::string("IEEE64BIG");
-	  header.data_type      = std::string("4D_SU3_GAUGE_3x3");
-	  NerscSimpleUnmunger<fobj3D,sobj> munge;
-	  BinaryIO::Uint32Checksum<vobj,fobj3D>(Umu, munge,header.checksum);
-	  offset = writeHeader(header,file);
-#ifdef PARALLEL_WRITE
-	  csum=BinaryIO::writeObjectParallel<vobj,fobj3D>(Umu,file,munge,offset,header.floating_point);
-#else
-	  csum=BinaryIO::writeObjectSerial<vobj,fobj3D>(Umu,file,munge,offset,header.floating_point);
-#endif
-	}
+	uint32_t nersc_csum,scidac_csuma,scidac_csumb;
+	BinaryIO::writeLatticeObject<vobj,fobj3D>(Umu,file,munge,offset,header.floating_point,
+								  nersc_csum,scidac_csuma,scidac_csumb);
+	header.checksum = nersc_csum;
+	writeHeader(header,file);
 
-	std::cout<<GridLogMessage <<"Written NERSC Configuration on "<< file << " checksum "<<std::hex<<csum<< std::dec<<" plaq "<< header.plaquette <<std::endl;
+	std::cout<<GridLogMessage <<"Written NERSC Configuration on "<< file << " checksum "
+		 <<std::hex<<header.checksum
+		 <<std::dec<<" plaq "<< header.plaquette <<std::endl;
 
       }
-
-
       ///////////////////////////////
       // RNG state
       ///////////////////////////////
@@ -472,19 +265,19 @@ namespace Grid {
 	typedef typename GridParallelRNG::RngStateType RngStateType;
 
 	// Following should become arguments
-	NerscField header;
+	FieldMetaData header;
 	header.sequence_number = 1;
 	header.ensemble_id     = "UKQCD";
 	header.ensemble_label  = "DWF";
 
 	GridBase *grid = parallel._grid;
 
-	NerscGrid(grid,header);
+	GridMetaData(grid,header);
+	assert(header.nd==4);
 	header.link_trace=0.0;
 	header.plaquette=0.0;
-	NerscMachineCharacteristics(header);
+	MachineCharacteristics(header);
 
-	uint32_t csum;
 	int offset;
   
 #ifdef RNG_RANLUX
@@ -502,15 +295,19 @@ namespace Grid {
 
 	truncate(file);
 	offset = writeHeader(header,file);
-	csum=BinaryIO::writeRNGSerial(serial,parallel,file,offset);
-	header.checksum = csum;
+	uint32_t nersc_csum,scidac_csuma,scidac_csumb;
+	BinaryIO::writeRNG(serial,parallel,file,offset,nersc_csum,scidac_csuma,scidac_csumb);
+	header.checksum = nersc_csum;
 	offset = writeHeader(header,file);
 
-	std::cout<<GridLogMessage <<"Written NERSC RNG STATE "<<file<< " checksum "<<std::hex<<csum<<std::dec<<std::endl;
+	std::cout<<GridLogMessage 
+		 <<"Written NERSC RNG STATE "<<file<< " checksum "
+		 <<std::hex<<header.checksum
+		 <<std::dec<<std::endl;
 
       }
     
-      static inline void readRNGState(GridSerialRNG &serial,GridParallelRNG & parallel,NerscField& header,std::string file)
+      static inline void readRNGState(GridSerialRNG &serial,GridParallelRNG & parallel,FieldMetaData& header,std::string file)
       {
 	typedef typename GridParallelRNG::RngStateType RngStateType;
 
@@ -518,7 +315,7 @@ namespace Grid {
 
 	int offset = readHeader(file,grid,header);
 
-	NerscField clone(header);
+	FieldMetaData clone(header);
 
 	std::string format(header.floating_point);
 	std::string data_type(header.data_type);
@@ -538,15 +335,19 @@ namespace Grid {
 
 	// depending on datatype, set up munger;
 	// munger is a function of <floating point, Real, data_type>
-	uint32_t csum=BinaryIO::readRNGSerial(serial,parallel,file,offset);
+	uint32_t nersc_csum,scidac_csuma,scidac_csumb;
+	BinaryIO::readRNG(serial,parallel,file,offset,nersc_csum,scidac_csuma,scidac_csumb);
 
-	assert(csum == header.checksum );
+	if ( nersc_csum != header.checksum ) { 
+	  std::cerr << "checksum mismatch "<<std::hex<< nersc_csum <<" "<<header.checksum<<std::dec<<std::endl;
+	  exit(0);
+	}
+	assert(nersc_csum == header.checksum );
 
 	std::cout<<GridLogMessage <<"Read NERSC RNG file "<<file<< " format "<< data_type <<std::endl;
       }
 
     };
 
-
   }}
 #endif

lib/perfmon/PerfCount.cc

@@ -40,7 +40,7 @@ const PerformanceCounter::PerformanceCounterConfig PerformanceCounter::Performan
   { PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES          ,  "CPUCYCLES.........." , INSTRUCTIONS},
   { PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS        ,  "INSTRUCTIONS......." , CPUCYCLES   },
     // 4
-#ifdef AVX512
+#ifdef KNL
     { PERF_TYPE_RAW, RawConfig(0x40,0x04), "ALL_LOADS..........", CPUCYCLES    },
     { PERF_TYPE_RAW, RawConfig(0x01,0x04), "L1_MISS_LOADS......", L1D_READ_ACCESS  },
     { PERF_TYPE_RAW, RawConfig(0x40,0x04), "ALL_LOADS..........", L1D_READ_ACCESS    },

lib/qcd/action/fermion/CayleyFermion5D.cc

@@ -414,7 +414,7 @@ void CayleyFermion5D<Impl>::SetCoefficientsInternal(RealD zolo_hi,std::vector<Co
   for(int i=0; i < Ls; i++){
     as[i] = 1.0;
     omega[i] = gamma[i]*zolo_hi; //NB reciprocal relative to Chroma NEF code
-    //    assert(fabs(omega[i])>0.0);
+    assert(omega[i]!=Coeff_t(0.0));
     bs[i] = 0.5*(bpc/omega[i] + bmc);
     cs[i] = 0.5*(bpc/omega[i] - bmc);
   }
@@ -429,7 +429,7 @@ void CayleyFermion5D<Impl>::SetCoefficientsInternal(RealD zolo_hi,std::vector<Co
   
   for(int i=0;i<Ls;i++){
     bee[i]=as[i]*(bs[i]*(4.0-this->M5) +1.0);     
-    //    assert(fabs(bee[i])>0.0);
+    assert(bee[i]!=Coeff_t(0.0));
     cee[i]=as[i]*(1.0-cs[i]*(4.0-this->M5));
     beo[i]=as[i]*bs[i];
     ceo[i]=-as[i]*cs[i];
@@ -455,11 +455,17 @@ void CayleyFermion5D<Impl>::SetCoefficientsInternal(RealD zolo_hi,std::vector<Co
     dee[i] = bee[i];
     
     if ( i < Ls-1 ) {
+
+      assert(bee[i]!=Coeff_t(0.0));
+      assert(bee[0]!=Coeff_t(0.0));
       
       lee[i] =-cee[i+1]/bee[i]; // sub-diag entry on the ith column
       
       leem[i]=mass*cee[Ls-1]/bee[0];
-      for(int j=0;j<i;j++)  leem[i]*= aee[j]/bee[j+1];
+      for(int j=0;j<i;j++) {
+	assert(bee[j+1]!=Coeff_t(0.0));
+	leem[i]*= aee[j]/bee[j+1];
+      }
       
       uee[i] =-aee[i]/bee[i];   // up-diag entry on the ith row
       
@@ -478,7 +484,7 @@ void CayleyFermion5D<Impl>::SetCoefficientsInternal(RealD zolo_hi,std::vector<Co
   { 
     Coeff_t delta_d=mass*cee[Ls-1];
     for(int j=0;j<Ls-1;j++) {
-      //      assert(fabs(bee[j])>0.0);
+      assert(bee[j] != Coeff_t(0.0));
       delta_d *= cee[j]/bee[j];
     }
     dee[Ls-1] += delta_d;

lib/qcd/action/fermion/Fermion.h

@@ -237,4 +237,11 @@ typedef ImprovedStaggeredFermion5D<StaggeredVec5dImplD> ImprovedStaggeredFermion
 
   }}
 
+////////////////////
+// Scalar QED actions
+// TODO: this needs to move to another header after rename to Fermion.h
+////////////////////
+#include <Grid/qcd/action/scalar/Scalar.h>
+#include <Grid/qcd/action/gauge/Photon.h>
+
 #endif

lib/qcd/action/fermion/FermionOperatorImpl.h

@@ -644,19 +644,16 @@ class StaggeredImpl : public PeriodicGaugeImpl<GaugeImplTypes<S, Representation:
 
     INHERIT_GIMPL_TYPES(Gimpl);
       
-    template <typename vtype> using iImplScalar            = iScalar<iScalar<iScalar<vtype> > >;
     template <typename vtype> using iImplSpinor            = iScalar<iScalar<iVector<vtype, Dimension> > >;
     template <typename vtype> using iImplHalfSpinor        = iScalar<iScalar<iVector<vtype, Dimension> > >;
     template <typename vtype> using iImplDoubledGaugeField = iVector<iScalar<iMatrix<vtype, Dimension> >, Nds>;
     template <typename vtype> using iImplPropagator        = iScalar<iScalar<iMatrix<vtype, Dimension> > >;
     
-    typedef iImplScalar<Simd>            SiteComplex;
     typedef iImplSpinor<Simd>            SiteSpinor;
     typedef iImplHalfSpinor<Simd>        SiteHalfSpinor;
     typedef iImplDoubledGaugeField<Simd> SiteDoubledGaugeField;
     typedef iImplPropagator<Simd>        SitePropagator;
     
-    typedef Lattice<SiteComplex>           ComplexField;
     typedef Lattice<SiteSpinor>            FermionField;
     typedef Lattice<SiteDoubledGaugeField> DoubledGaugeField;
     typedef Lattice<SitePropagator> PropagatorField;
@@ -775,7 +772,6 @@ class StaggeredImpl : public PeriodicGaugeImpl<GaugeImplTypes<S, Representation:
 
     INHERIT_GIMPL_TYPES(Gimpl);
 
-    template <typename vtype> using iImplScalar            = iScalar<iScalar<iScalar<vtype> > >;
     template <typename vtype> using iImplSpinor            = iScalar<iScalar<iVector<vtype, Dimension> > >;
     template <typename vtype> using iImplHalfSpinor        = iScalar<iScalar<iVector<vtype, Dimension> > >;
     template <typename vtype> using iImplDoubledGaugeField = iVector<iScalar<iMatrix<vtype, Dimension> >, Nds>;
@@ -792,12 +788,10 @@ class StaggeredImpl : public PeriodicGaugeImpl<GaugeImplTypes<S, Representation:
     typedef Lattice<SiteDoubledGaugeField> DoubledGaugeField;
     typedef Lattice<SitePropagator> PropagatorField;
     
-    typedef iImplScalar<Simd>            SiteComplex;
     typedef iImplSpinor<Simd>            SiteSpinor;
     typedef iImplHalfSpinor<Simd>        SiteHalfSpinor;
 
     
-    typedef Lattice<SiteComplex>           ComplexField;
     typedef Lattice<SiteSpinor>            FermionField;
     
     typedef SimpleCompressor<SiteSpinor> Compressor;

lib/qcd/action/fermion/ImprovedStaggeredFermion5D.cc

@@ -230,8 +230,15 @@ void ImprovedStaggeredFermion5D<Impl>::DhopInternal(StencilImpl & st, LebesgueOr
 {
   Compressor compressor;
   int LLs = in._grid->_rdimensions[0];
+
+
+
+  DhopTotalTime -= usecond();
+  DhopCommTime -= usecond();
   st.HaloExchange(in,compressor);
+  DhopCommTime += usecond();
   
+  DhopComputeTime -= usecond();
   // Dhop takes the 4d grid from U, and makes a 5d index for fermion
   if (dag == DaggerYes) {
     parallel_for (int ss = 0; ss < U._grid->oSites(); ss++) {
@@ -244,12 +251,15 @@ void ImprovedStaggeredFermion5D<Impl>::DhopInternal(StencilImpl & st, LebesgueOr
 	Kernels::DhopSite(st,lo,U,UUU,st.CommBuf(),LLs,sU,in,out);
     }
   }
+  DhopComputeTime += usecond();
+  DhopTotalTime   += usecond();
 }
 
 
 template<class Impl>
 void ImprovedStaggeredFermion5D<Impl>::DhopOE(const FermionField &in, FermionField &out,int dag)
 {
+  DhopCalls+=1;
   conformable(in._grid,FermionRedBlackGrid());    // verifies half grid
   conformable(in._grid,out._grid); // drops the cb check
 
@@ -261,6 +271,7 @@ void ImprovedStaggeredFermion5D<Impl>::DhopOE(const FermionField &in, FermionFie
 template<class Impl>
 void ImprovedStaggeredFermion5D<Impl>::DhopEO(const FermionField &in, FermionField &out,int dag)
 {
+  DhopCalls+=1;
   conformable(in._grid,FermionRedBlackGrid());    // verifies half grid
   conformable(in._grid,out._grid); // drops the cb check
 
@@ -272,6 +283,7 @@ void ImprovedStaggeredFermion5D<Impl>::DhopEO(const FermionField &in, FermionFie
 template<class Impl>
 void ImprovedStaggeredFermion5D<Impl>::Dhop(const FermionField &in, FermionField &out,int dag)
 {
+  DhopCalls+=2;
   conformable(in._grid,FermionGrid()); // verifies full grid
   conformable(in._grid,out._grid);
 
@@ -280,6 +292,54 @@ void ImprovedStaggeredFermion5D<Impl>::Dhop(const FermionField &in, FermionField
   DhopInternal(Stencil,Lebesgue,Umu,UUUmu,in,out,dag);
 }
 
+template<class Impl>
+void ImprovedStaggeredFermion5D<Impl>::Report(void) 
+{
+  std::vector<int> latt = GridDefaultLatt();          
+  RealD volume = Ls;  for(int mu=0;mu<Nd;mu++) volume=volume*latt[mu];
+  RealD NP = _FourDimGrid->_Nprocessors;
+  RealD NN = _FourDimGrid->NodeCount();
+
+  std::cout << GridLogMessage << "#### Dhop calls report " << std::endl;
+
+  std::cout << GridLogMessage << "ImprovedStaggeredFermion5D Number of DhopEO Calls   : " 
+	    << DhopCalls   << std::endl;
+  std::cout << GridLogMessage << "ImprovedStaggeredFermion5D TotalTime   /Calls       : " 
+	    << DhopTotalTime   / DhopCalls << " us" << std::endl;
+  std::cout << GridLogMessage << "ImprovedStaggeredFermion5D CommTime    /Calls       : " 
+	    << DhopCommTime    / DhopCalls << " us" << std::endl;
+  std::cout << GridLogMessage << "ImprovedStaggeredFermion5D ComputeTime/Calls        : " 
+	    << DhopComputeTime / DhopCalls << " us" << std::endl;
+
+  // Average the compute time
+  _FourDimGrid->GlobalSum(DhopComputeTime);
+  DhopComputeTime/=NP;
+
+  RealD mflops = 1154*volume*DhopCalls/DhopComputeTime/2; // 2 for red black counting
+  std::cout << GridLogMessage << "Average mflops/s per call                : " << mflops << std::endl;
+  std::cout << GridLogMessage << "Average mflops/s per call per rank       : " << mflops/NP << std::endl;
+  std::cout << GridLogMessage << "Average mflops/s per call per node       : " << mflops/NN << std::endl;
+  
+  RealD Fullmflops = 1154*volume*DhopCalls/(DhopTotalTime)/2; // 2 for red black counting
+  std::cout << GridLogMessage << "Average mflops/s per call (full)         : " << Fullmflops << std::endl;
+  std::cout << GridLogMessage << "Average mflops/s per call per rank (full): " << Fullmflops/NP << std::endl;
+  std::cout << GridLogMessage << "Average mflops/s per call per node (full): " << Fullmflops/NN << std::endl;
+
+  std::cout << GridLogMessage << "ImprovedStaggeredFermion5D Stencil"    <<std::endl;  Stencil.Report();
+  std::cout << GridLogMessage << "ImprovedStaggeredFermion5D StencilEven"<<std::endl;  StencilEven.Report();
+  std::cout << GridLogMessage << "ImprovedStaggeredFermion5D StencilOdd" <<std::endl;  StencilOdd.Report();
+}
+template<class Impl>
+void ImprovedStaggeredFermion5D<Impl>::ZeroCounters(void) 
+{
+  DhopCalls       = 0;
+  DhopTotalTime    = 0;
+  DhopCommTime    = 0;
+  DhopComputeTime = 0;
+  Stencil.ZeroCounters();
+  StencilEven.ZeroCounters();
+  StencilOdd.ZeroCounters();
+}
 
 /////////////////////////////////////////////////////////////////////////
 // Implement the general interface. Here we use SAME mass on all slices

lib/qcd/action/fermion/ImprovedStaggeredFermion5D.h

@@ -55,6 +55,16 @@ namespace QCD {
       FermionField _tmp;
       FermionField &tmp(void) { return _tmp; }
 
+      ////////////////////////////////////////
+      // Performance monitoring
+      ////////////////////////////////////////
+      void Report(void);
+      void ZeroCounters(void);
+      double DhopTotalTime;
+      double DhopCalls;
+      double DhopCommTime;
+      double DhopComputeTime;
+
       ///////////////////////////////////////////////////////////////
       // Implement the abstract base
       ///////////////////////////////////////////////////////////////

lib/qcd/action/fermion/WilsonCompressor.h

@@ -238,7 +238,33 @@ template<typename HCS,typename HS,typename S> using WilsonCompressor = WilsonCom
 template<class vobj,class cobj>
 class WilsonStencil : public CartesianStencil<vobj,cobj> {
 public:
-
+  double timer0;
+  double timer1;
+  double timer2;
+  double timer3;
+  double timer4;
+  double timer5;
+  double timer6;
+  uint64_t callsi;
+  void ZeroCountersi(void)
+  {
+    timer0=0;
+    timer1=0;
+    timer2=0;
+    timer3=0;
+    timer4=0;
+    timer5=0;
+    timer6=0;
+    callsi=0;
+  }
+  void Reporti(int calls)
+  {
+    if ( timer0 ) std::cout << GridLogMessage << " timer0 (HaloGatherOpt) " <<timer0/calls <<std::endl;
+    if ( timer1 ) std::cout << GridLogMessage << " timer1 (Communicate)   " <<timer1/calls <<std::endl;
+    if ( timer2 ) std::cout << GridLogMessage << " timer2 (CommsMerge )   " <<timer2/calls <<std::endl;
+    if ( timer3 ) std::cout << GridLogMessage << " timer3 (commsMergeShm) " <<timer3/calls <<std::endl;
+    if ( timer4 ) std::cout << GridLogMessage << " timer4 " <<timer4 <<std::endl;
+  }
   typedef CartesianCommunicator::CommsRequest_t CommsRequest_t;
 
   std::vector<int> same_node;
@@ -252,6 +278,7 @@ public:
     : CartesianStencil<vobj,cobj> (grid,npoints,checkerboard,directions,distances) ,
     same_node(npoints)
   { 
+    ZeroCountersi();
     surface_list.resize(0);
   };
 
@@ -261,7 +288,6 @@ public:
     // Here we know the distance is 1 for WilsonStencil
     for(int point=0;point<this->_npoints;point++){
       same_node[point] = this->SameNode(point);
-      //      std::cout << " dir " <<point<<" same_node " <<same_node[point]<<std::endl;
     }
     
     for(int site = 0 ;site< vol4;site++){
@@ -282,17 +308,28 @@ public:
   {
     std::vector<std::vector<CommsRequest_t> > reqs;
     this->HaloExchangeOptGather(source,compress);
-    this->CommunicateBegin(reqs);
-    this->CommunicateComplete(reqs);
+    double t1=usecond();
+    // Asynchronous MPI calls multidirectional, Isend etc...
+    //    this->CommunicateBegin(reqs);
+    //    this->CommunicateComplete(reqs);
+    // Non-overlapped directions within a thread. Asynchronous calls except MPI3, threaded up to comm threads ways.
+    this->Communicate();
+    double t2=usecond(); timer1 += t2-t1;
     this->CommsMerge(compress);
+    double t3=usecond(); timer2 += t3-t2;
     this->CommsMergeSHM(compress);
+    double t4=usecond(); timer3 += t4-t3;
   }
   
   template <class compressor>
   void HaloExchangeOptGather(const Lattice<vobj> &source,compressor &compress) 
   {
     this->Prepare();
+    double t0=usecond();
     this->HaloGatherOpt(source,compress);
+    double t1=usecond();
+    timer0 += t1-t0;
+    callsi++;
   }
 
   template <class compressor>
@@ -304,7 +341,9 @@ public:
     typedef typename compressor::SiteHalfSpinor     SiteHalfSpinor;
     typedef typename compressor::SiteHalfCommSpinor SiteHalfCommSpinor;
 
+    this->mpi3synctime_g-=usecond();
     this->_grid->StencilBarrier();
+    this->mpi3synctime_g+=usecond();
 
     assert(source._grid==this->_grid);
     this->halogtime-=usecond();
@@ -323,7 +362,6 @@ public:
     int dag = compress.dag;
     int face_idx=0;
     if ( dag ) { 
-      //	std::cout << " Optimised Dagger compress " <<std::endl;
       assert(same_node[Xp]==this->HaloGatherDir(source,XpCompress,Xp,face_idx));
       assert(same_node[Yp]==this->HaloGatherDir(source,YpCompress,Yp,face_idx));
       assert(same_node[Zp]==this->HaloGatherDir(source,ZpCompress,Zp,face_idx));

lib/qcd/action/fermion/WilsonFermion5D.cc

@@ -123,22 +123,24 @@ WilsonFermion5D<Impl>::WilsonFermion5D(GaugeField &_Umu,
   int vol4;
   vol4=FourDimGrid.oSites();
   Stencil.BuildSurfaceList(LLs,vol4);
+
   vol4=FourDimRedBlackGrid.oSites();
   StencilEven.BuildSurfaceList(LLs,vol4);
    StencilOdd.BuildSurfaceList(LLs,vol4);
 
-  std::cout << GridLogMessage << " SurfaceLists "<< Stencil.surface_list.size()
-                       <<" " << StencilEven.surface_list.size()<<std::endl;
+   //  std::cout << GridLogMessage << " SurfaceLists "<< Stencil.surface_list.size()
+   //                       <<" " << StencilEven.surface_list.size()<<std::endl;
 
 }
      
 template<class Impl>
 void WilsonFermion5D<Impl>::Report(void)
 {
-    std::vector<int> latt = GridDefaultLatt();          
-    RealD volume = Ls;  for(int mu=0;mu<Nd;mu++) volume=volume*latt[mu];
-    RealD NP = _FourDimGrid->_Nprocessors;
-    RealD NN = _FourDimGrid->NodeCount();
+  RealD NP     = _FourDimGrid->_Nprocessors;
+  RealD NN     = _FourDimGrid->NodeCount();
+  RealD volume = Ls;  
+  std::vector<int> latt = _FourDimGrid->GlobalDimensions();
+  for(int mu=0;mu<Nd;mu++) volume=volume*latt[mu];
 
   if ( DhopCalls > 0 ) {
     std::cout << GridLogMessage << "#### Dhop calls report " << std::endl;
@@ -184,6 +186,11 @@ void WilsonFermion5D<Impl>::Report(void)
     std::cout << GridLogMessage << "WilsonFermion5D StencilEven"<<std::endl;  StencilEven.Report();
     std::cout << GridLogMessage << "WilsonFermion5D StencilOdd" <<std::endl;  StencilOdd.Report();
   }
+  if ( DhopCalls > 0){
+    std::cout << GridLogMessage << "WilsonFermion5D Stencil     Reporti()"    <<std::endl;  Stencil.Reporti(DhopCalls);
+    std::cout << GridLogMessage << "WilsonFermion5D StencilEven Reporti()"<<std::endl;  StencilEven.Reporti(DhopCalls);
+    std::cout << GridLogMessage << "WilsonFermion5D StencilOdd  Reporti()" <<std::endl;  StencilOdd.Reporti(DhopCalls);
+  }
 }
 
 template<class Impl>
@@ -203,6 +210,9 @@ void WilsonFermion5D<Impl>::ZeroCounters(void) {
   Stencil.ZeroCounters();
   StencilEven.ZeroCounters();
   StencilOdd.ZeroCounters();
+  Stencil.ZeroCountersi();
+  StencilEven.ZeroCountersi();
+  StencilOdd.ZeroCountersi();
 }
 
 
@@ -379,7 +389,6 @@ void WilsonFermion5D<Impl>::DhopInternalOverlappedComms(StencilImpl & st, Lebesg
 {
 #ifdef GRID_OMP
   //  assert((dag==DaggerNo) ||(dag==DaggerYes));
-  typedef CartesianCommunicator::CommsRequest_t CommsRequest_t;
 
   Compressor compressor(dag);
 
@@ -388,46 +397,70 @@ void WilsonFermion5D<Impl>::DhopInternalOverlappedComms(StencilImpl & st, Lebesg
 
   DhopFaceTime-=usecond();
   st.HaloExchangeOptGather(in,compressor);
-  DhopFaceTime+=usecond();
-  std::vector<std::vector<CommsRequest_t> > reqs;
-
-  // Rely on async comms; start comms before merge of local data
-  DhopCommTime-=usecond();
-  st.CommunicateBegin(reqs);
-
-  DhopFaceTime-=usecond();
-  st.CommsMergeSHM(compressor);
+  st.CommsMergeSHM(compressor);// Could do this inside parallel region overlapped with comms
   DhopFaceTime+=usecond();
 
-  // Perhaps use omp task and region
-#pragma omp parallel 
+  double ctime=0;
+  double ptime=0;
+
+  //////////////////////////////////////////////////////////////////////////////////////////////////////
+  // Ugly explicit thread mapping introduced for OPA reasons.
+  //////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma omp parallel reduction(max:ctime) reduction(max:ptime)
   { 
+    int tid = omp_get_thread_num();
     int nthreads = omp_get_num_threads();
-    int me = omp_get_thread_num();
-    int myoff, mywork;
-
-    GridThread::GetWork(len,me-1,mywork,myoff,nthreads-1);
-    int sF = LLs * myoff;
-
-    if ( me == 0 ) {
-      st.CommunicateComplete(reqs);
-      DhopCommTime+=usecond();
-    } else { 
-      // Interior links in stencil
-      if ( me==1 ) DhopComputeTime-=usecond();
-      if (dag == DaggerYes) Kernels::DhopSiteDag(st,lo,U,st.CommBuf(),sF,myoff,LLs,mywork,in,out,1,0);
-      else      	    Kernels::DhopSite(st,lo,U,st.CommBuf(),sF,myoff,LLs,mywork,in,out,1,0);
-      if ( me==1 ) DhopComputeTime+=usecond();
+    int ncomms = CartesianCommunicator::nCommThreads;
+    if (ncomms == -1) ncomms = 1;
+    assert(nthreads > ncomms);
+    if (tid >= ncomms) {
+      double start = usecond();
+      nthreads -= ncomms;
+      int ttid = tid - ncomms;
+      int n = U._grid->oSites();
+      int chunk = n / nthreads;
+      int rem = n % nthreads;
+      int myblock, myn;
+      if (ttid < rem) {
+	myblock = ttid * chunk + ttid;
+	myn = chunk+1;
+      } else {
+	myblock = ttid*chunk + rem;
+	myn = chunk;
+      }
+      
+      // do the compute
+      if (dag == DaggerYes) {
+	for (int ss = myblock; ss < myblock+myn; ++ss) {
+	  int sU = ss;
+	  int sF = LLs * sU;
+	  Kernels::DhopSiteDag(st,lo,U,st.CommBuf(),sF,sU,LLs,1,in,out,1,0);
+	}
+      } else {
+	for (int ss = myblock; ss < myblock+myn; ++ss) {
+	  int sU = ss;
+	  int sF = LLs * sU;
+	  Kernels::DhopSite(st,lo,U,st.CommBuf(),sF,sU,LLs,1,in,out,1,0);
+	}
+      }
+	ptime = usecond() - start;
+    }
+    {
+      double start = usecond();
+      st.CommunicateThreaded();
+      ctime = usecond() - start;
     }
   }
+  DhopCommTime += ctime;
+  DhopComputeTime+=ptime;
+
+  // First to enter, last to leave timing
+  st.CollateThreads();
 
   DhopFaceTime-=usecond();
   st.CommsMerge(compressor);
   DhopFaceTime+=usecond();
 
-  // Load imbalance alert. Should use dynamic schedule OMP for loop
-  // Perhaps create a list of only those sites with face work, and 
-  // load balance process the list.
   DhopComputeTime2-=usecond();
   if (dag == DaggerYes) {
     int sz=st.surface_list.size();
@@ -448,11 +481,9 @@ void WilsonFermion5D<Impl>::DhopInternalOverlappedComms(StencilImpl & st, Lebesg
 #else 
   assert(0);
 #endif
-
 }
 
 
-
 template<class Impl>
 void WilsonFermion5D<Impl>::DhopInternalSerialComms(StencilImpl & st, LebesgueOrder &lo,
 					 DoubledGaugeField & U,

lib/qcd/action/gauge/GaugeImplTypes.h

@@ -40,12 +40,15 @@ namespace QCD {
   typedef typename GImpl::Simd Simd;                \
   typedef typename GImpl::LinkField GaugeLinkField; \
   typedef typename GImpl::Field GaugeField;         \
+  typedef typename GImpl::ComplexField ComplexField;\
   typedef typename GImpl::SiteField SiteGaugeField; \
+  typedef typename GImpl::SiteComplex SiteComplex;  \
   typedef typename GImpl::SiteLink SiteGaugeLink;
 
-#define INHERIT_FIELD_TYPES(Impl)             \
-  typedef typename Impl::Simd Simd;           \
-  typedef typename Impl::SiteField SiteField; \
+#define INHERIT_FIELD_TYPES(Impl)		    \
+  typedef typename Impl::Simd Simd;		    \
+  typedef typename Impl::ComplexField ComplexField; \
+  typedef typename Impl::SiteField SiteField;	    \
   typedef typename Impl::Field Field;
 
 // hardcodes the exponential approximation in the template
@@ -53,14 +56,17 @@ template <class S, int Nrepresentation = Nc, int Nexp = 12 > class GaugeImplType
 public:
   typedef S Simd;
 
-  template <typename vtype> using iImplGaugeLink  = iScalar<iScalar<iMatrix<vtype, Nrepresentation>>>;
-  template <typename vtype> using iImplGaugeField = iVector<iScalar<iMatrix<vtype, Nrepresentation>>, Nd>;
+  template <typename vtype> using iImplScalar     = iScalar<iScalar<iScalar<vtype> > >;
+  template <typename vtype> using iImplGaugeLink  = iScalar<iScalar<iMatrix<vtype, Nrepresentation> > >;
+  template <typename vtype> using iImplGaugeField = iVector<iScalar<iMatrix<vtype, Nrepresentation> >, Nd>;
 
+  typedef iImplScalar<Simd>     SiteComplex;
   typedef iImplGaugeLink<Simd>  SiteLink;
   typedef iImplGaugeField<Simd> SiteField;
 
-  typedef Lattice<SiteLink>  LinkField; 
-  typedef Lattice<SiteField> Field;
+  typedef Lattice<SiteComplex> ComplexField;
+  typedef Lattice<SiteLink>    LinkField; 
+  typedef Lattice<SiteField>   Field;
 
   // Guido: we can probably separate the types from the HMC functions
   // this will create 2 kind of implementations
@@ -80,7 +86,7 @@ public:
 
   ///////////////////////////////////////////////////////////
   // Move these to another class
-  // HMC auxiliary functions 
+  // HMC auxiliary functions
   static inline void generate_momenta(Field &P, GridParallelRNG &pRNG) {
     // specific for SU gauge fields
     LinkField Pmu(P._grid);
@@ -92,14 +98,19 @@ public:
   }
 
   static inline Field projectForce(Field &P) { return Ta(P); }
-  
+
   static inline void update_field(Field& P, Field& U, double ep){
-    for (int mu = 0; mu < Nd; mu++) {
-      auto Umu = PeekIndex<LorentzIndex>(U, mu);
-      auto Pmu = PeekIndex<LorentzIndex>(P, mu);
-      Umu = expMat(Pmu, ep, Nexp) * Umu;
-      PokeIndex<LorentzIndex>(U, ProjectOnGroup(Umu), mu);
+    //static std::chrono::duration<double> diff;
+
+    //auto start = std::chrono::high_resolution_clock::now();
+    parallel_for(int ss=0;ss<P._grid->oSites();ss++){
+      for (int mu = 0; mu < Nd; mu++) 
+        U[ss]._internal[mu] = ProjectOnGroup(Exponentiate(P[ss]._internal[mu], ep, Nexp) * U[ss]._internal[mu]);
     }
+    
+    //auto end = std::chrono::high_resolution_clock::now();
+   // diff += end - start;
+   // std::cout << "Time to exponentiate matrix " << diff.count() << " s\n";
   }
 
   static inline RealD FieldSquareNorm(Field& U){

lib/qcd/action/gauge/Photon.h

@@ -0,0 +1,286 @@
+/*************************************************************************************
+ 
+ Grid physics library, www.github.com/paboyle/Grid
+ 
+ Source file: ./lib/qcd/action/gauge/Photon.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 */
+#ifndef QCD_PHOTON_ACTION_H
+#define QCD_PHOTON_ACTION_H
+
+namespace Grid{
+namespace QCD{
+  template <class S>
+  class QedGimpl
+  {
+  public:
+    typedef S Simd;
+    
+    template <typename vtype>
+    using iImplGaugeLink  = iScalar<iScalar<iScalar<vtype>>>;
+    template <typename vtype>
+    using iImplGaugeField = iVector<iScalar<iScalar<vtype>>, Nd>;
+    
+    typedef iImplGaugeLink<Simd>  SiteLink;
+    typedef iImplGaugeField<Simd> SiteField;
+    typedef SiteField             SiteComplex;
+    
+    typedef Lattice<SiteLink>  LinkField;
+    typedef Lattice<SiteField> Field;
+    typedef Field              ComplexField;
+  };
+  
+  typedef QedGimpl<vComplex> QedGimplR;
+  
+  template<class Gimpl>
+  class Photon
+  {
+  public:
+    INHERIT_GIMPL_TYPES(Gimpl);
+    GRID_SERIALIZABLE_ENUM(Gauge, undef, feynman, 1, coulomb, 2, landau, 3);
+    GRID_SERIALIZABLE_ENUM(ZmScheme, undef, qedL, 1, qedTL, 2);
+  public:
+    Photon(Gauge gauge, ZmScheme zmScheme);
+    virtual ~Photon(void) = default;
+    void FreePropagator(const GaugeField &in, GaugeField &out);
+    void MomentumSpacePropagator(const GaugeField &in, GaugeField &out);
+    void StochasticWeight(GaugeLinkField &weight);
+    void StochasticField(GaugeField &out, GridParallelRNG &rng);
+    void StochasticField(GaugeField &out, GridParallelRNG &rng,
+                         const GaugeLinkField &weight);
+  private:
+    void invKHatSquared(GaugeLinkField &out);
+    void zmSub(GaugeLinkField &out);
+  private:
+    Gauge    gauge_;
+    ZmScheme zmScheme_;
+  };
+
+  typedef Photon<QedGimplR>  PhotonR;
+  
+  template<class Gimpl>
+  Photon<Gimpl>::Photon(Gauge gauge, ZmScheme zmScheme)
+  : gauge_(gauge), zmScheme_(zmScheme)
+  {}
+  
+  template<class Gimpl>
+  void Photon<Gimpl>::FreePropagator (const GaugeField &in,GaugeField &out)
+  {
+    FFT theFFT(in._grid);
+    
+    GaugeField in_k(in._grid);
+    GaugeField prop_k(in._grid);
+    
+    theFFT.FFT_all_dim(in_k,in,FFT::forward);
+    MomentumSpacePropagator(prop_k,in_k);
+    theFFT.FFT_all_dim(out,prop_k,FFT::backward);
+  }
+  
+  template<class Gimpl>
+  void Photon<Gimpl>::invKHatSquared(GaugeLinkField &out)
+  {
+    GridBase           *grid = out._grid;
+    GaugeLinkField     kmu(grid), one(grid);
+    const unsigned int nd    = grid->_ndimension;
+    std::vector<int>   &l    = grid->_fdimensions;
+    std::vector<int>   zm(nd,0);
+    TComplex           Tone = Complex(1.0,0.0);
+    TComplex           Tzero= Complex(0.0,0.0);
+    
+    one = Complex(1.0,0.0);
+    out = zero;
+    for(int mu = 0; mu < nd; mu++)
+    {
+      Real twoPiL = M_PI*2./l[mu];
+      
+      LatticeCoordinate(kmu,mu);
+      kmu = 2.*sin(.5*twoPiL*kmu);
+      out = out + kmu*kmu;
+    }
+    pokeSite(Tone, out, zm);
+    out = one/out;
+    pokeSite(Tzero, out, zm);
+  }
+  
+  template<class Gimpl>
+  void Photon<Gimpl>::zmSub(GaugeLinkField &out)
+  {
+    GridBase           *grid = out._grid;
+    const unsigned int nd    = grid->_ndimension;
+    
+    switch (zmScheme_)
+    {
+      case ZmScheme::qedTL:
+      {
+        std::vector<int> zm(nd,0);
+        TComplex         Tzero = Complex(0.0,0.0);
+        
+        pokeSite(Tzero, out, zm);
+        
+        break;
+      }
+      case ZmScheme::qedL:
+      {
+        LatticeInteger spNrm(grid), coor(grid);
+        GaugeLinkField z(grid);
+        
+        spNrm = zero;
+        for(int d = 0; d < grid->_ndimension - 1; d++)
+        {
+          LatticeCoordinate(coor,d);
+          spNrm = spNrm + coor*coor;
+        }
+        out = where(spNrm == Integer(0), 0.*out, out);
+        
+        break;
+      }
+      default:
+        break;
+    }
+  }
+  
+  template<class Gimpl>
+  void Photon<Gimpl>::MomentumSpacePropagator(const GaugeField &in,
+                                               GaugeField &out)
+  {
+    GridBase           *grid = out._grid;
+    LatticeComplex     k2Inv(grid);
+    
+    invKHatSquared(k2Inv);
+    zmSub(k2Inv);
+    
+    out = in*k2Inv;
+  }
+  
+  template<class Gimpl>
+  void Photon<Gimpl>::StochasticWeight(GaugeLinkField &weight)
+  {
+    auto               *grid     = dynamic_cast<GridCartesian *>(weight._grid);
+    const unsigned int nd        = grid->_ndimension;
+    std::vector<int>   latt_size = grid->_fdimensions;
+    
+    Integer vol = 1;
+    for(int d = 0; d < nd; d++)
+    {
+      vol = vol * latt_size[d];
+    }
+    invKHatSquared(weight);
+    weight = sqrt(vol*real(weight));
+    zmSub(weight);
+  }
+  
+  template<class Gimpl>
+  void Photon<Gimpl>::StochasticField(GaugeField &out, GridParallelRNG &rng)
+  {
+    auto           *grid = dynamic_cast<GridCartesian *>(out._grid);
+    GaugeLinkField weight(grid);
+    
+    StochasticWeight(weight);
+    StochasticField(out, rng, weight);
+  }
+  
+  template<class Gimpl>
+  void Photon<Gimpl>::StochasticField(GaugeField &out, GridParallelRNG &rng,
+                                      const GaugeLinkField &weight)
+  {
+    auto               *grid = dynamic_cast<GridCartesian *>(out._grid);
+    const unsigned int nd = grid->_ndimension;
+    GaugeLinkField     r(grid);
+    GaugeField         aTilde(grid);
+    FFT                fft(grid);
+    
+    for(int mu = 0; mu < nd; mu++)
+    {
+      gaussian(rng, r);
+      r = weight*r;
+      pokeLorentz(aTilde, r, mu);
+    }
+    fft.FFT_all_dim(out, aTilde, FFT::backward);
+    
+    out = real(out);
+  }
+//  template<class Gimpl>
+//  void Photon<Gimpl>::FeynmanGaugeMomentumSpacePropagator_L(GaugeField &out,
+//                                                            const GaugeField &in)
+//  {
+//    
+//    FeynmanGaugeMomentumSpacePropagator_TL(out,in);
+//    
+//    GridBase *grid = out._grid;
+//    LatticeInteger     coor(grid);
+//    GaugeField zz(grid); zz=zero;
+//    
+//    // xyzt
+//    for(int d = 0; d < grid->_ndimension-1;d++){
+//      LatticeCoordinate(coor,d);
+//      out = where(coor==Integer(0),zz,out);
+//    }
+//  }
+//  
+//  template<class Gimpl>
+//  void Photon<Gimpl>::FeynmanGaugeMomentumSpacePropagator_TL(GaugeField &out,
+//                                                             const GaugeField &in)
+//  {
+//    
+//    // what type LatticeComplex
+//    GridBase *grid = out._grid;
+//    int nd = grid->_ndimension;
+//    
+//    typedef typename GaugeField::vector_type vector_type;
+//    typedef typename GaugeField::scalar_type ScalComplex;
+//    typedef Lattice<iSinglet<vector_type> > LatComplex;
+//    
+//    std::vector<int> latt_size   = grid->_fdimensions;
+//    
+//    LatComplex denom(grid); denom= zero;
+//    LatComplex   one(grid); one = ScalComplex(1.0,0.0);
+//    LatComplex   kmu(grid);
+//    
+//    ScalComplex ci(0.0,1.0);
+//    // momphase = n * 2pi / L
+//    for(int mu=0;mu<Nd;mu++) {
+//      
+//      LatticeCoordinate(kmu,mu);
+//      
+//      RealD TwoPiL =  M_PI * 2.0/ latt_size[mu];
+//      
+//      kmu = TwoPiL * kmu ;
+//      
+//      denom = denom + 4.0*sin(kmu*0.5)*sin(kmu*0.5); // Wilson term
+//    }
+//    std::vector<int> zero_mode(nd,0);
+//    TComplexD Tone = ComplexD(1.0,0.0);
+//    TComplexD Tzero= ComplexD(0.0,0.0);
+//    
+//    pokeSite(Tone,denom,zero_mode);
+//    
+//    denom= one/denom;
+//    
+//    pokeSite(Tzero,denom,zero_mode);
+//    
+//    out = zero;
+//    out = in*denom;
+//  };
+  
+}}
+#endif

lib/qcd/action/gauge/WilsonGaugeAction.h

@@ -71,14 +71,18 @@ class WilsonGaugeAction : public Action<typename Gimpl::GaugeField> {
 
     RealD factor = 0.5 * beta / RealD(Nc);
 
-    GaugeLinkField Umu(U._grid);
+    //GaugeLinkField Umu(U._grid);
     GaugeLinkField dSdU_mu(U._grid);
     for (int mu = 0; mu < Nd; mu++) {
-      Umu = PeekIndex<LorentzIndex>(U, mu);
+      //Umu = PeekIndex<LorentzIndex>(U, mu);
 
       // Staple in direction mu
-      WilsonLoops<Gimpl>::Staple(dSdU_mu, U, mu);
-      dSdU_mu = Ta(Umu * dSdU_mu) * factor;
+      //WilsonLoops<Gimpl>::Staple(dSdU_mu, U, mu);
+      //dSdU_mu = Ta(Umu * dSdU_mu) * factor;
+
+  
+      WilsonLoops<Gimpl>::StapleMult(dSdU_mu, U, mu);
+      dSdU_mu = Ta(dSdU_mu) * factor;
 
       PokeIndex<LorentzIndex>(dSdU, dSdU_mu, mu);
     }

lib/qcd/action/scalar/Scalar.h

@@ -31,6 +31,7 @@ directory
 
 #include <Grid/qcd/action/scalar/ScalarImpl.h>
 #include <Grid/qcd/action/scalar/ScalarAction.h>
+#include <Grid/qcd/action/scalar/ScalarInteractionAction.h>
 
 namespace Grid {
 namespace QCD {
@@ -39,6 +40,10 @@ namespace QCD {
   typedef ScalarAction<ScalarImplF>                 ScalarActionF;
   typedef ScalarAction<ScalarImplD>                 ScalarActionD;
 
+  template <int Colours, int Dimensions> using ScalarAdjActionR = ScalarInteractionAction<ScalarNxNAdjImplR<Colours>, Dimensions>;
+  template <int Colours, int Dimensions> using ScalarAdjActionF = ScalarInteractionAction<ScalarNxNAdjImplF<Colours>, Dimensions>;
+  template <int Colours, int Dimensions> using ScalarAdjActionD = ScalarInteractionAction<ScalarNxNAdjImplD<Colours>, Dimensions>;
+  
 }
 }
 

lib/qcd/action/scalar/ScalarAction.h

@@ -6,10 +6,10 @@
 
   Copyright (C) 2015
 
-Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
-Author: Peter Boyle <paboyle@ph.ed.ac.uk>
-Author: neo <cossu@post.kek.jp>
-Author: paboyle <paboyle@ph.ed.ac.uk>
+  Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
+  Author: Peter Boyle <paboyle@ph.ed.ac.uk>
+  Author: neo <cossu@post.kek.jp>
+  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
@@ -35,50 +35,49 @@ directory
 
 namespace Grid {
   // FIXME drop the QCD namespace everywhere here
-  
-  template <class Impl>
-  class ScalarAction : public QCD::Action<typename Impl::Field> {
-  public:
+
+template <class Impl>
+class ScalarAction : public QCD::Action<typename Impl::Field> {
+ public:
     INHERIT_FIELD_TYPES(Impl);
-    
-  private:
+
+ private:
     RealD mass_square;
     RealD lambda;
-    
-  public:
-    ScalarAction(RealD ms, RealD l) : mass_square(ms), lambda(l){};
 
-    virtual std::string LogParameters(){
+ public:
+    ScalarAction(RealD ms, RealD l) : mass_square(ms), lambda(l) {}
+
+    virtual std::string LogParameters() {
       std::stringstream sstream;
       sstream << GridLogMessage << "[ScalarAction] lambda      : " << lambda      << std::endl;
       sstream << GridLogMessage << "[ScalarAction] mass_square : " << mass_square << std::endl;
       return sstream.str();
-      
     }
-    
-    virtual std::string action_name(){return "ScalarAction";}
-    
-    virtual void refresh(const Field &U,
-			 GridParallelRNG &pRNG){};  // noop as no pseudoferms
-    
+    virtual std::string action_name() {return "ScalarAction";}
+
+    virtual void refresh(const Field &U, GridParallelRNG &pRNG) {}  // noop as no pseudoferms
+
     virtual RealD S(const Field &p) {
       return (mass_square * 0.5 + QCD::Nd) * ScalarObs<Impl>::sumphisquared(p) +
-	(lambda / 24.) * ScalarObs<Impl>::sumphifourth(p) +
-	ScalarObs<Impl>::sumphider(p);
+    (lambda / 24.) * ScalarObs<Impl>::sumphifourth(p) +
+    ScalarObs<Impl>::sumphider(p);
     };
-    
+
     virtual void deriv(const Field &p,
-		       Field &force) {
+                       Field &force) {
       Field tmp(p._grid);
       Field p2(p._grid);
       ScalarObs<Impl>::phisquared(p2, p);
       tmp = -(Cshift(p, 0, -1) + Cshift(p, 0, 1));
       for (int mu = 1; mu < QCD::Nd; mu++) tmp -= Cshift(p, mu, -1) + Cshift(p, mu, 1);
-      
-      force=+(mass_square + 2. * QCD::Nd) * p + (lambda / 6.) * p2 * p + tmp;
-    };
-  };
-  
-} // Grid
+
+      force =+(mass_square + 2. * QCD::Nd) * p + (lambda / 6.) * p2 * p + tmp;
+    }
+};
+
+
+
+}  // namespace Grid
 
 #endif // SCALAR_ACTION_H

lib/qcd/action/scalar/ScalarImpl.h

@@ -5,96 +5,158 @@
 namespace Grid {
   //namespace QCD {
 
-  template <class S>
-  class ScalarImplTypes {
-  public:
+template <class S>
+class ScalarImplTypes {
+ public:
     typedef S Simd;
-    
+
     template <typename vtype>
     using iImplField = iScalar<iScalar<iScalar<vtype> > >;
-    
+
     typedef iImplField<Simd> SiteField;
-    
+    typedef SiteField        SitePropagator;
+    typedef SiteField        SiteComplex;
     
     typedef Lattice<SiteField> Field;
+    typedef Field              ComplexField;
+    typedef Field              FermionField;
+    typedef Field              PropagatorField;
     
     static inline void generate_momenta(Field& P, GridParallelRNG& pRNG){
       gaussian(pRNG, P);
     }
-    
+
     static inline Field projectForce(Field& P){return P;}
-    
-    static inline void update_field(Field& P, Field& U, double ep){
+
+    static inline void update_field(Field& P, Field& U, double ep) {
       U += P*ep;
     }
-    
-    static inline RealD FieldSquareNorm(Field& U){
+
+    static inline RealD FieldSquareNorm(Field& U) {
       return (- sum(trace(U*U))/2.0);
     }
-    
+
     static inline void HotConfiguration(GridParallelRNG &pRNG, Field &U) {
       gaussian(pRNG, U);
     }
-    
+
     static inline void TepidConfiguration(GridParallelRNG &pRNG, Field &U) {
       gaussian(pRNG, U);
     }
-    
+
     static inline void ColdConfiguration(GridParallelRNG &pRNG, Field &U) {
       U = 1.0;
     }
     
+    static void MomentumSpacePropagator(Field &out, RealD m)
+    {
+      GridBase           *grid = out._grid;
+      Field              kmu(grid), one(grid);
+      const unsigned int nd    = grid->_ndimension;
+      std::vector<int>   &l    = grid->_fdimensions;
+      
+      one = Complex(1.0,0.0);
+      out = m*m;
+      for(int mu = 0; mu < nd; mu++)
+      {
+        Real twoPiL = M_PI*2./l[mu];
+        
+        LatticeCoordinate(kmu,mu);
+        kmu = 2.*sin(.5*twoPiL*kmu);
+        out = out + kmu*kmu;
+      }
+      out = one/out;
+    }
+    
+    static void FreePropagator(const Field &in, Field &out,
+                               const Field &momKernel)
+    {
+      FFT   fft((GridCartesian *)in._grid);
+      Field inFT(in._grid);
+      
+      fft.FFT_all_dim(inFT, in, FFT::forward);
+      inFT = inFT*momKernel;
+      fft.FFT_all_dim(out, inFT, FFT::backward);
+    }
+    
+    static void FreePropagator(const Field &in, Field &out, RealD m)
+    {
+      Field momKernel(in._grid);
+      
+      MomentumSpacePropagator(momKernel, m);
+      FreePropagator(in, out, momKernel);
+    }
+    
   };
 
   template <class S, unsigned int N>
-  class ScalarMatrixImplTypes {
+  class ScalarAdjMatrixImplTypes {
   public:
     typedef S Simd;
+    typedef QCD::SU<N> Group;
     
     template <typename vtype>
-    using iImplField = iScalar<iScalar<iMatrix<vtype, N> > >;
+    using iImplField   = iScalar<iScalar<iMatrix<vtype, N>>>;
+    template <typename vtype>
+    using iImplComplex = iScalar<iScalar<iScalar<vtype>>>;
+
+    typedef iImplField<Simd>   SiteField;
+    typedef SiteField          SitePropagator;
+    typedef iImplComplex<Simd> SiteComplex;
     
-    typedef iImplField<Simd> SiteField;
-    
-    
-    typedef Lattice<SiteField> Field;
-    
-    static inline void generate_momenta(Field& P, GridParallelRNG& pRNG){
-      gaussian(pRNG, P);
+    typedef Lattice<SiteField>   Field;
+    typedef Lattice<SiteComplex> ComplexField;
+    typedef Field                FermionField;
+    typedef Field                PropagatorField;
+
+    static inline void generate_momenta(Field& P, GridParallelRNG& pRNG) {
+      Group::GaussianFundamentalLieAlgebraMatrix(pRNG, P);
     }
-    
-    static inline Field projectForce(Field& P){return P;}
-    
-    static inline void update_field(Field& P, Field& U, double ep){
+
+    static inline Field projectForce(Field& P) {return P;}
+
+    static inline void update_field(Field& P, Field& U, double ep) {
       U += P*ep;
     }
-    
-    static inline RealD FieldSquareNorm(Field& U){
-      return (TensorRemove(- sum(trace(U*U))*0.5).real());
+
+    static inline RealD FieldSquareNorm(Field& U) {
+      return (TensorRemove(sum(trace(U*U))).real());
     }
-    
+
     static inline void HotConfiguration(GridParallelRNG &pRNG, Field &U) {
-      gaussian(pRNG, U);
+      Group::GaussianFundamentalLieAlgebraMatrix(pRNG, U);
     }
-    
+
     static inline void TepidConfiguration(GridParallelRNG &pRNG, Field &U) {
-      gaussian(pRNG, U);
+      Group::GaussianFundamentalLieAlgebraMatrix(pRNG, U, 0.01);
     }
-    
+
     static inline void ColdConfiguration(GridParallelRNG &pRNG, Field &U) {
-      U = 1.0;
+      U = zero;
     }
-    
+
   };
 
 
-  
-  
+
+
   typedef ScalarImplTypes<vReal> ScalarImplR;
   typedef ScalarImplTypes<vRealF> ScalarImplF;
   typedef ScalarImplTypes<vRealD> ScalarImplD;
+  typedef ScalarImplTypes<vComplex> ScalarImplCR;
+  typedef ScalarImplTypes<vComplexF> ScalarImplCF;
+  typedef ScalarImplTypes<vComplexD> ScalarImplCD;
+    
+  // Hardcoding here the size of the matrices
+  typedef ScalarAdjMatrixImplTypes<vComplex,  QCD::Nc> ScalarAdjImplR;
+  typedef ScalarAdjMatrixImplTypes<vComplexF, QCD::Nc> ScalarAdjImplF;
+  typedef ScalarAdjMatrixImplTypes<vComplexD, QCD::Nc> ScalarAdjImplD;
+
+  template <int Colours > using ScalarNxNAdjImplR = ScalarAdjMatrixImplTypes<vComplex,   Colours >;
+  template <int Colours > using ScalarNxNAdjImplF = ScalarAdjMatrixImplTypes<vComplexF,  Colours >;
+  template <int Colours > using ScalarNxNAdjImplD = ScalarAdjMatrixImplTypes<vComplexD,  Colours >;
   
-  //} 
-} 
+  //}
+}
 
 #endif

lib/qcd/action/scalar/ScalarInteractionAction.h

@@ -6,10 +6,7 @@
 
   Copyright (C) 2015
 
-Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
-Author: Peter Boyle <paboyle@ph.ed.ac.uk>
-Author: neo <cossu@post.kek.jp>
-Author: paboyle <paboyle@ph.ed.ac.uk>
+  Author: Guido Cossu <guido,cossu@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
@@ -30,55 +27,122 @@ directory
   *************************************************************************************/
 /*  END LEGAL */
 
-#ifndef SCALAR_ACTION_H
-#define SCALAR_ACTION_H
+#ifndef SCALAR_INT_ACTION_H
+#define SCALAR_INT_ACTION_H
+
+
+// Note: this action can completely absorb the ScalarAction for real float fields
+// use the scalarObjs to generalise the structure
 
 namespace Grid {
   // FIXME drop the QCD namespace everywhere here
-  
-  template <class Impl>
+
+  template <class Impl, int Ndim >
   class ScalarInteractionAction : public QCD::Action<typename Impl::Field> {
   public:
     INHERIT_FIELD_TYPES(Impl);
-    
   private:
     RealD mass_square;
     RealD lambda;
-    
-  public:
-    ScalarAction(RealD ms, RealD l) : mass_square(ms), lambda(l){};
 
-    virtual std::string LogParameters(){
+
+    typedef typename Field::vector_object vobj;
+    typedef CartesianStencil<vobj,vobj> Stencil;
+
+    SimpleCompressor<vobj> compressor;
+    int npoint = 2*Ndim;
+    std::vector<int> directions;//    = {0,1,2,3,0,1,2,3};  // forcing 4 dimensions
+    std::vector<int> displacements;//  = {1,1,1,1, -1,-1,-1,-1};
+
+
+  public:
+
+    ScalarInteractionAction(RealD ms, RealD l) : mass_square(ms), lambda(l), displacements(2*Ndim,0), directions(2*Ndim,0){
+      for (int mu = 0 ; mu < Ndim; mu++){
+		directions[mu]         = mu; directions[mu+Ndim]    = mu;
+		displacements[mu]      =  1; displacements[mu+Ndim] = -1;
+      }
+    }
+
+    virtual std::string LogParameters() {
       std::stringstream sstream;
       sstream << GridLogMessage << "[ScalarAction] lambda      : " << lambda      << std::endl;
       sstream << GridLogMessage << "[ScalarAction] mass_square : " << mass_square << std::endl;
       return sstream.str();
-      
     }
-    
-    virtual std::string action_name(){return "ScalarAction";}
-    
-    virtual void refresh(const Field &U,
-			 GridParallelRNG &pRNG){};  // noop as no pseudoferms
-    
+
+    virtual std::string action_name() {return "ScalarAction";}
+
+    virtual void refresh(const Field &U, GridParallelRNG &pRNG) {}
+
     virtual RealD S(const Field &p) {
-      return (mass_square * 0.5 + QCD::Nd) * ScalarObs<Impl>::sumphisquared(p) +
-	(lambda / 24.) * ScalarObs<Impl>::sumphifourth(p) +
-	ScalarObs<Impl>::sumphider(p);
+      assert(p._grid->Nd() == Ndim);
+      static Stencil phiStencil(p._grid, npoint, 0, directions, displacements);
+      phiStencil.HaloExchange(p, compressor);
+      Field action(p._grid), pshift(p._grid), phisquared(p._grid);
+      phisquared = p*p;
+      action = (2.0*Ndim + mass_square)*phisquared - lambda/24.*phisquared*phisquared;
+      for (int mu = 0; mu < Ndim; mu++) {
+	//  pshift = Cshift(p, mu, +1);  // not efficient, implement with stencils
+	parallel_for (int i = 0; i < p._grid->oSites(); i++) {
+	  int permute_type;
+	  StencilEntry *SE;
+	  vobj temp2;
+	  const vobj *temp, *t_p;
+	    
+	  SE = phiStencil.GetEntry(permute_type, mu, i);
+	  t_p  = &p._odata[i];
+	  if ( SE->_is_local ) {
+	    temp = &p._odata[SE->_offset];
+	    if ( SE->_permute ) {
+	      permute(temp2, *temp, permute_type);
+	      action._odata[i] -= temp2*(*t_p) + (*t_p)*temp2;
+	    } else {
+	      action._odata[i] -= (*temp)*(*t_p) + (*t_p)*(*temp);
+	    }
+	  } else {
+	    action._odata[i] -= phiStencil.CommBuf()[SE->_offset]*(*t_p) + (*t_p)*phiStencil.CommBuf()[SE->_offset];
+	  }
+	}
+	//  action -= pshift*p + p*pshift;
+      }
+      // NB the trace in the algebra is normalised to 1/2
+      // minus sign coming from the antihermitian fields
+      return -(TensorRemove(sum(trace(action)))).real();
     };
-    
-    virtual void deriv(const Field &p,
-		       Field &force) {
-      Field tmp(p._grid);
-      Field p2(p._grid);
-      ScalarObs<Impl>::phisquared(p2, p);
-      tmp = -(Cshift(p, 0, -1) + Cshift(p, 0, 1));
-      for (int mu = 1; mu < QCD::Nd; mu++) tmp -= Cshift(p, mu, -1) + Cshift(p, mu, 1);
+
+    virtual void deriv(const Field &p, Field &force) {
+      assert(p._grid->Nd() == Ndim);
+      force = (2.0*Ndim + mass_square)*p - lambda/12.*p*p*p;
+      // move this outside
+      static Stencil phiStencil(p._grid, npoint, 0, directions, displacements);
+      phiStencil.HaloExchange(p, compressor);
       
-      force=+(mass_square + 2. * QCD::Nd) * p + (lambda / 6.) * p2 * p + tmp;
-    };
+      //for (int mu = 0; mu < QCD::Nd; mu++) force -= Cshift(p, mu, -1) + Cshift(p, mu, 1);
+      for (int point = 0; point < npoint; point++) {
+	parallel_for (int i = 0; i < p._grid->oSites(); i++) {
+	  const vobj *temp;
+	  vobj temp2;
+	  int permute_type;
+	  StencilEntry *SE;
+	  SE = phiStencil.GetEntry(permute_type, point, i);
+	  
+	  if ( SE->_is_local ) {
+	    temp = &p._odata[SE->_offset];
+	    if ( SE->_permute ) {
+	      permute(temp2, *temp, permute_type);
+	      force._odata[i] -= temp2;
+	    } else {
+	      force._odata[i] -= *temp;
+	    }
+	  } else {
+	    force._odata[i] -= phiStencil.CommBuf()[SE->_offset];
+	  }
+	}
+      }
+    }
   };
   
-} // Grid
+}  // namespace Grid
 
-#endif // SCALAR_ACTION_H
+#endif  // SCALAR_INT_ACTION_H

lib/qcd/hmc/GenericHMCrunner.h

@@ -207,6 +207,12 @@ using GenericHMCRunnerTemplate = HMCWrapperTemplate<Implementation, Integrator,
 typedef HMCWrapperTemplate<ScalarImplR, MinimumNorm2, ScalarFields>
     ScalarGenericHMCRunner;
 
+typedef HMCWrapperTemplate<ScalarAdjImplR, MinimumNorm2, ScalarMatrixFields>
+    ScalarAdjGenericHMCRunner;
+
+template <int Colours> 
+using ScalarNxNAdjGenericHMCRunner = HMCWrapperTemplate < ScalarNxNAdjImplR<Colours>, MinimumNorm2, ScalarNxNMatrixFields<Colours> >;
+
 }  // namespace QCD
 }  // namespace Grid
 

lib/qcd/hmc/HMC.h

@@ -76,7 +76,7 @@ struct HMCparameters: Serializable {
 
   template < class ReaderClass > 
   void initialize(Reader<ReaderClass> &TheReader){
-  	std::cout << "Reading HMC\n";
+  	std::cout << GridLogMessage << "Reading HMC\n";
   	read(TheReader, "HMC", *this);
   }
 

lib/qcd/hmc/HMCResourceManager.h

@@ -165,7 +165,7 @@ class HMCResourceManager {
   // Grids
   //////////////////////////////////////////////////////////////
 
-  void AddGrid(std::string s, GridModule& M) {
+  void AddGrid(const std::string s, GridModule& M) {
     // Check for name clashes
     auto search = Grids.find(s);
     if (search != Grids.end()) {
@@ -174,14 +174,24 @@ class HMCResourceManager {
       exit(1);
     }
     Grids[s] = std::move(M);
+    std::cout << GridLogMessage << "::::::::::::::::::::::::::::::::::::::::" <<std::endl;
+    std::cout << GridLogMessage << "HMCResourceManager:" << std::endl;
+    std::cout << GridLogMessage << "Created grid set with name '" << s << "' and decomposition for the full cartesian " << std::endl;
+    Grids[s].show_full_decomposition();
+    std::cout << GridLogMessage << "::::::::::::::::::::::::::::::::::::::::" <<std::endl;
   }
 
   // Add a named grid set, 4d shortcut
-  void AddFourDimGrid(std::string s) {
+  void AddFourDimGrid(const std::string s) {
     GridFourDimModule<vComplex> Mod;
     AddGrid(s, Mod);
   }
 
+  // Add a named grid set, 4d shortcut + tweak simd lanes
+  void AddFourDimGrid(const std::string s, const std::vector<int> simd_decomposition) {
+    GridFourDimModule<vComplex> Mod(simd_decomposition);
+    AddGrid(s, Mod);
+  }
 
 
   GridCartesian* GetCartesian(std::string s = "") {
@@ -253,6 +263,7 @@ class HMCResourceManager {
   template<class T, class... Types>
   void AddObservable(Types&&... Args){
     ObservablesList.push_back(std::unique_ptr<T>(new T(std::forward<Types>(Args)...)));
+    ObservablesList.back()->print_parameters();
   }
 
   std::vector<HmcObservable<typename ImplementationPolicy::Field>* > GetObservables(){
@@ -297,4 +308,4 @@ private:
 }
 }
 
-#endif  // HMC_RESOURCE_MANAGER_H
+#endif  // HMC_RESOURCE_MANAGER_H

lib/qcd/hmc/HMC_GridModules.h

@@ -33,28 +33,29 @@ directory
 namespace Grid {
 
 // Resources
-// Modules for grids 
+// Modules for grids
 
 // Introduce another namespace HMCModules?
 
-class GridModuleParameters: Serializable{   
+class GridModuleParameters: Serializable{
 public:
   GRID_SERIALIZABLE_CLASS_MEMBERS(GridModuleParameters,
   std::string, lattice,
   std::string, mpi);
 
-  std::vector<int> getLattice(){return strToVec<int>(lattice);}
-  std::vector<int> getMpi()    {return strToVec<int>(mpi);}
+  std::vector<int> getLattice() const {return strToVec<int>(lattice);}
+  std::vector<int> getMpi()     const {return strToVec<int>(mpi);}
 
-  void check(){
-    if (getLattice().size() != getMpi().size()) {
-      std::cout << GridLogError 
+
+  void check() const {
+    if (getLattice().size() != getMpi().size() ) {
+      std::cout << GridLogError
                 << "Error in GridModuleParameters: lattice and mpi dimensions "
                    "do not match"
                 << std::endl;
       exit(1);
     }
-  }    
+  }
 
   template <class ReaderClass>
   GridModuleParameters(Reader<ReaderClass>& Reader, std::string n = "LatticeGrid"):name(n) {
@@ -75,51 +76,94 @@ private:
 // Lower level class
 class GridModule {
  public:
-  GridCartesian* get_full() { 
+  GridCartesian* get_full() {
     std::cout << GridLogDebug << "Getting cartesian in module"<< std::endl;
     return grid_.get(); }
-  GridRedBlackCartesian* get_rb() { 
+  GridRedBlackCartesian* get_rb() {
     std::cout << GridLogDebug << "Getting rb-cartesian in module"<< std::endl;
     return rbgrid_.get(); }
 
   void set_full(GridCartesian* grid) { grid_.reset(grid); }
   void set_rb(GridRedBlackCartesian* rbgrid) { rbgrid_.reset(rbgrid); }
+  void show_full_decomposition(){ grid_->show_decomposition(); }
+  void show_rb_decomposition(){ rbgrid_->show_decomposition(); }
 
  protected:
   std::unique_ptr<GridCartesian> grid_;
   std::unique_ptr<GridRedBlackCartesian> rbgrid_;
-  
+
 };
 
 ////////////////////////////////////
 // Classes for the user
 ////////////////////////////////////
 // Note: the space time grid should be out of the QCD namespace
-template< class vector_type>
-class GridFourDimModule : public GridModule {
- public:
-  GridFourDimModule() {
+template <class vector_type>
+class GridFourDimModule : public GridModule
+{
+public:
+  GridFourDimModule()
+  {
     using namespace QCD;
     set_full(SpaceTimeGrid::makeFourDimGrid(
-        GridDefaultLatt(), GridDefaultSimd(4, vector_type::Nsimd()),
+        GridDefaultLatt(), 
+        GridDefaultSimd(4, vector_type::Nsimd()),
         GridDefaultMpi()));
     set_rb(SpaceTimeGrid::makeFourDimRedBlackGrid(grid_.get()));
   }
 
-  GridFourDimModule(GridModuleParameters Params) {
+  GridFourDimModule(const std::vector<int> tweak_simd)
+  {
+    using namespace QCD;
+    if (tweak_simd.size() != 4)
+    {
+      std::cout << GridLogError
+                << "Error in GridFourDimModule: SIMD size different from 4" 
+                << std::endl;
+      exit(1);
+    }
+
+    // Checks that the product agrees with the expectation
+    int simd_sum = 1;
+    for (auto &n : tweak_simd)
+      simd_sum *= n;
+    std::cout << GridLogDebug << "TweakSIMD: " << tweak_simd << "  Sum: " << simd_sum << std::endl;
+
+    if (simd_sum == vector_type::Nsimd())
+    {
+      set_full(SpaceTimeGrid::makeFourDimGrid(
+          GridDefaultLatt(), 
+          tweak_simd, 
+          GridDefaultMpi()));
+      set_rb(SpaceTimeGrid::makeFourDimRedBlackGrid(grid_.get()));
+    }
+    else
+    {
+      std::cout << GridLogError 
+                << "Error in GridFourDimModule: SIMD lanes must sum to " 
+                << vector_type::Nsimd() 
+                << std::endl;
+    }
+  }
+
+  GridFourDimModule(const GridModuleParameters Params)
+  {
     using namespace QCD;
-    Params.check();
     std::vector<int> lattice_v = Params.getLattice();
     std::vector<int> mpi_v = Params.getMpi();
-    if (lattice_v.size() == 4) {
+    if (lattice_v.size() == 4)
+    {
       set_full(SpaceTimeGrid::makeFourDimGrid(
-          lattice_v, GridDefaultSimd(4, vector_type::Nsimd()),
+          lattice_v, 
+          GridDefaultSimd(4, vector_type::Nsimd()),
           mpi_v));
       set_rb(SpaceTimeGrid::makeFourDimRedBlackGrid(grid_.get()));
-    } else {
-      std::cout << GridLogError 
-          << "Error in GridFourDimModule: lattice dimension different from 4"
-          << std::endl;
+    }
+    else
+    {
+      std::cout << GridLogError
+                << "Error in GridFourDimModule: lattice dimension different from 4"
+                << std::endl;
       exit(1);
     }
   }