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155 lines
4.5 KiB
C++
155 lines
4.5 KiB
C++
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/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./benchmarks/Benchmark_dwf.cc
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Copyright (C) 2015
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: paboyle <paboyle@ph.ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution directory
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*************************************************************************************/
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/* END LEGAL */
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#include <Grid.h>
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#include <PerfCount.h>
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using namespace std;
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using namespace Grid;
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using namespace Grid::QCD;
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template<class d>
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struct scal {
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d internal;
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};
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Gamma::GammaMatrix Gmu [] = {
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Gamma::GammaX,
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Gamma::GammaY,
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Gamma::GammaZ,
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Gamma::GammaT
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};
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bool overlapComms = false;
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int main (int argc, char ** argv)
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{
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Grid_init(&argc,&argv);
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if( GridCmdOptionExists(argv,argv+argc,"--asynch") ){
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overlapComms = true;
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}
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int threads = GridThread::GetThreads();
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std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
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std::vector<int> latt4 = GridDefaultLatt();
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const int Ls=16;
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GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
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GridRedBlackCartesian * UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
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GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid);
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GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid);
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std::vector<int> seeds4({1,2,3,4});
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std::vector<int> seeds5({5,6,7,8});
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GridParallelRNG RNG4(UGrid); RNG4.SeedFixedIntegers(seeds4);
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GridParallelRNG RNG5(FGrid); RNG5.SeedFixedIntegers(seeds5);
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LatticeFermion src (FGrid); random(RNG5,src);
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LatticeFermion result(FGrid); result=zero;
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LatticeFermion ref(FGrid); ref=zero;
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LatticeFermion tmp(FGrid);
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LatticeFermion err(FGrid);
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ColourMatrix cm = Complex(1.0,0.0);
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LatticeGaugeField Umu(UGrid);
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random(RNG4,Umu);
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LatticeGaugeField Umu5d(FGrid);
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// replicate across fifth dimension
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for(int ss=0;ss<Umu._grid->oSites();ss++){
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for(int s=0;s<Ls;s++){
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Umu5d._odata[Ls*ss+s] = Umu._odata[ss];
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}
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}
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////////////////////////////////////
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// Naive wilson implementation
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////////////////////////////////////
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std::vector<LatticeColourMatrix> U(4,FGrid);
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for(int mu=0;mu<Nd;mu++){
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U[mu] = PeekIndex<LorentzIndex>(Umu5d,mu);
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}
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if (1)
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{
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ref = zero;
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for(int mu=0;mu<Nd;mu++){
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tmp = U[mu]*Cshift(src,mu+1,1);
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ref=ref + tmp - Gamma(Gmu[mu])*tmp;
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tmp =adj(U[mu])*src;
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tmp =Cshift(tmp,mu+1,-1);
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ref=ref + tmp + Gamma(Gmu[mu])*tmp;
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}
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ref = -0.5*ref;
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}
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RealD mass=0.1;
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RealD M5 =1.8;
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typename DomainWallFermionR::ImplParams params;
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params.overlapCommsCompute = overlapComms;
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RealD NP = UGrid->_Nprocessors;
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QCD::WilsonKernelsStatic::AsmOpt=1;
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DomainWallFermionR Dw(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5,params);
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std::cout<<GridLogMessage << "Calling Dw"<<std::endl;
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int ncall =50;
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if (1) {
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double t0=usecond();
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for(int i=0;i<ncall;i++){
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Dw.Dhop(src,result,0);
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}
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double t1=usecond();
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double volume=Ls; for(int mu=0;mu<Nd;mu++) volume=volume*latt4[mu];
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double flops=1344*volume*ncall;
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std::cout<<GridLogMessage << "Called Dw "<<ncall<<" times in "<<t1-t0<<" us"<<std::endl;
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std::cout<<GridLogMessage << "norm result "<< norm2(result)<<std::endl;
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std::cout<<GridLogMessage << "norm ref "<< norm2(ref)<<std::endl;
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std::cout<<GridLogMessage << "mflop/s = "<< flops/(t1-t0)<<std::endl;
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std::cout<<GridLogMessage << "mflop/s per node = "<< flops/(t1-t0)/NP<<std::endl;
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err = ref-result;
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std::cout<<GridLogMessage << "norm diff "<< norm2(err)<<std::endl;
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// Dw.Report();
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}
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Grid_finalize();
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}
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