From 05acc229206af895790d5c1c17b97f32ec64dfb9 Mon Sep 17 00:00:00 2001
From: paboyle <paboyle@ph.ed.ac.uk>
Date: Tue, 7 Jun 2016 13:18:21 -0700
Subject: [PATCH] placeholder for non temporal loads optimisation

---
 benchmarks/Benchmark_dwf_ntpf.cc | 154 +++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 benchmarks/Benchmark_dwf_ntpf.cc

diff --git a/benchmarks/Benchmark_dwf_ntpf.cc b/benchmarks/Benchmark_dwf_ntpf.cc
new file mode 100644
index 00000000..9b947876
--- /dev/null
+++ b/benchmarks/Benchmark_dwf_ntpf.cc
@@ -0,0 +1,154 @@
+    /*************************************************************************************
+
+    Grid physics library, www.github.com/paboyle/Grid 
+
+    Source file: ./benchmarks/Benchmark_dwf.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.h>
+#include <PerfCount.h>
+
+using namespace std;
+using namespace Grid;
+using namespace Grid::QCD;
+
+template<class d>
+struct scal {
+  d internal;
+};
+
+  Gamma::GammaMatrix Gmu [] = {
+    Gamma::GammaX,
+    Gamma::GammaY,
+    Gamma::GammaZ,
+    Gamma::GammaT
+  };
+
+bool overlapComms = false;
+
+
+int main (int argc, char ** argv)
+{
+  Grid_init(&argc,&argv);
+
+  if( GridCmdOptionExists(argv,argv+argc,"--asynch") ){
+    overlapComms = true;
+  }
+
+  int threads = GridThread::GetThreads();
+  std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
+
+  std::vector<int> latt4 = GridDefaultLatt();
+  const int Ls=16;
+  GridCartesian         * UGrid   = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
+  GridRedBlackCartesian * UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
+  GridCartesian         * FGrid   = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid);
+  GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid);
+
+  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);
+
+  LatticeFermion src   (FGrid); random(RNG5,src);
+  LatticeFermion result(FGrid); result=zero;
+  LatticeFermion    ref(FGrid);    ref=zero;
+  LatticeFermion    tmp(FGrid);
+  LatticeFermion    err(FGrid);
+
+  ColourMatrix cm = Complex(1.0,0.0);
+
+  LatticeGaugeField Umu(UGrid); 
+  random(RNG4,Umu);
+
+  LatticeGaugeField Umu5d(FGrid); 
+
+  // replicate across fifth dimension
+  for(int ss=0;ss<Umu._grid->oSites();ss++){
+    for(int s=0;s<Ls;s++){
+      Umu5d._odata[Ls*ss+s] = Umu._odata[ss];
+    }
+  }
+
+  ////////////////////////////////////
+  // Naive wilson implementation
+  ////////////////////////////////////
+  std::vector<LatticeColourMatrix> U(4,FGrid);
+  for(int mu=0;mu<Nd;mu++){
+    U[mu] = PeekIndex<LorentzIndex>(Umu5d,mu);
+  }
+
+  if (1)
+  {
+    ref = zero;
+    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;
+  }
+
+  RealD mass=0.1;
+  RealD M5  =1.8;
+
+  typename DomainWallFermionR::ImplParams params; 
+  params.overlapCommsCompute = overlapComms;
+  
+  RealD NP = UGrid->_Nprocessors;
+
+
+  QCD::WilsonKernelsStatic::AsmOpt=1;
+
+  DomainWallFermionR Dw(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,params);
+  
+  std::cout<<GridLogMessage << "Calling Dw"<<std::endl;
+  int ncall =50;
+  if (1) {
+
+    double t0=usecond();
+    for(int i=0;i<ncall;i++){
+      Dw.Dhop(src,result,0);
+    }
+    double t1=usecond();
+    
+    double volume=Ls;  for(int mu=0;mu<Nd;mu++) volume=volume*latt4[mu];
+    double flops=1344*volume*ncall;
+
+    std::cout<<GridLogMessage << "Called Dw "<<ncall<<" times in "<<t1-t0<<" us"<<std::endl;
+    std::cout<<GridLogMessage << "norm result "<< norm2(result)<<std::endl;
+    std::cout<<GridLogMessage << "norm ref    "<< norm2(ref)<<std::endl;
+    std::cout<<GridLogMessage << "mflop/s =   "<< flops/(t1-t0)<<std::endl;
+    std::cout<<GridLogMessage << "mflop/s per node =  "<< flops/(t1-t0)/NP<<std::endl;
+    err = ref-result; 
+    std::cout<<GridLogMessage << "norm diff   "<< norm2(err)<<std::endl;
+    //    Dw.Report();
+  }
+  Grid_finalize();
+}