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243 lines
7.4 KiB
C++
243 lines
7.4 KiB
C++
/*************************************************************************************
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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/Grid.h>
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using namespace std;
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using namespace Grid;
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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::Algebra Gmu [] = {
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Gamma::Algebra::GammaX,
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Gamma::Algebra::GammaY,
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Gamma::Algebra::GammaZ,
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Gamma::Algebra::GammaT
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};
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void benchDw(std::vector<int> & L, int Ls, int threads, int report =0 );
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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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std::cout << GridLogMessage<< "*****************************************************************" <<std::endl;
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std::cout << GridLogMessage<< "* Kernel options --dslash-generic, --dslash-unroll, --dslash-asm" <<std::endl;
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std::cout << GridLogMessage<< "*****************************************************************" <<std::endl;
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if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptGeneric ) std::cout << GridLogMessage<< "* Using GENERIC Nc WilsonKernels" <<std::endl;
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if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptHandUnroll) std::cout << GridLogMessage<< "* Using Nc=3 WilsonKernels" <<std::endl;
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if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptInlineAsm ) std::cout << GridLogMessage<< "* Using Asm Nc=3 WilsonKernels" <<std::endl;
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std::cout << GridLogMessage<< "*****************************************************************" <<std::endl;
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const int Ls=12;
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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::cout<<GridLogMessage << "=========================================================================="<<std::endl;
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std::cout<<GridLogMessage << "= Benchmarking DWF"<<std::endl;
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std::cout<<GridLogMessage << "=========================================================================="<<std::endl;
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std::cout<<GridLogMessage << "Volume \t\t\tProcs \t Dw \t eoDw "<<std::endl;
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std::cout<<GridLogMessage << "=========================================================================="<<std::endl;
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int Lmax=16;
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int dmin=2;
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if ( getenv("LMAX") ) Lmax=atoi(getenv("LMAX"));
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if ( getenv("DMIN") ) dmin=atoi(getenv("DMIN"));
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for (int L=8;L<=Lmax;L*=2){
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std::vector<int> latt4(4,L);
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for(int d=4;d>dmin;d--){
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if ( d<=3 ) latt4[d]*=2;
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std::cout << GridLogMessage <<"\t";
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for(int d=0;d<Nd;d++){
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std::cout<<latt4[d]<<"x";
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}
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std::cout <<Ls<<"\t" ;
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benchDw (latt4,Ls,threads,0);
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std::cout<<std::endl;
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}
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}
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std::cout<<GridLogMessage << "=========================================================================="<<std::endl;
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#ifdef PERFCOUNT
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{
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std::vector<int> latt4(4,16);
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std::cout<<GridLogMessage << "16^4 Dw miss rate"<<std::endl;
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benchDw (latt4,Ls,threads,1);
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}
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#endif
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Grid_finalize();
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}
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#undef CHECK
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void benchDw(std::vector<int> & latt4, int Ls, int threads,int report )
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{
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GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(latt4, 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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long unsigned int single_site_flops = 8*Nc*(7+16*Nc);
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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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#ifdef CHECK
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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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LatticeGaugeField Umu(UGrid);
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random(RNG4,Umu);
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#else
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LatticeFermion src (FGrid); src=Zero();
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LatticeGaugeField Umu(UGrid); Umu=Zero();
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#endif
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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 Umu5d(FGrid);
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// replicate across fifth dimension
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{
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autoView(Umu5d_v , Umu5d, CpuWrite);
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autoView( Umu_v , Umu, CpuRead);
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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_v[Ls*ss+s] = Umu_v[ss];
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}
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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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#ifdef CHECK
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if (1) {
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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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#endif
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RealD mass=0.1;
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RealD M5 =1.8;
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RealD NP = UGrid->_Nprocessors;
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DomainWallFermionD Dw(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
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double t0=usecond();
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Dw.Dhop(src,result,0);
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double t1=usecond();
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#ifdef TIMERS_OFF
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int ncall =10;
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#else
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int ncall =1+(int) ((5.0*1000*1000)/(t1-t0));
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#endif
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if (ncall < 5 ) exit(0);
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Dw.Dhop(src,result,0);
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#ifdef PERFCOUNT
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PerformanceCounter Counter(8);
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Counter.Start();
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#endif
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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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t1=usecond();
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#ifdef PERFCOUNT
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Counter.Stop();
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if ( report ) {
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Counter.Report();
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}
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#endif
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if ( ! report ) {
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double volume=Ls; for(int mu=0;mu<Nd;mu++) volume=volume*latt4[mu];
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double flops=single_site_flops*volume*ncall;
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std::cout <<"\t"<<NP<< "\t"<<flops/(t1-t0)<< "\t";
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}
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#ifdef CHECK
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err = ref-result;
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RealD errd = norm2(err);
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if ( errd> 1.0e-4 ) {
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std::cout<<GridLogMessage << "oops !!! norm diff "<< norm2(err)<<std::endl;
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exit(-1);
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}
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#endif
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LatticeFermion src_e (FrbGrid);
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LatticeFermion src_o (FrbGrid);
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LatticeFermion r_e (FrbGrid);
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LatticeFermion r_o (FrbGrid);
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LatticeFermion r_eo (FGrid);
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pickCheckerboard(Even,src_e,src);
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pickCheckerboard(Odd,src_o,src);
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{
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Dw.DhopEO(src_o,r_e,DaggerNo);
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double t0=usecond();
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for(int i=0;i<ncall;i++){
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Dw.DhopEO(src_o,r_e,DaggerNo);
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}
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double t1=usecond();
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if(!report){
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double volume=Ls; for(int mu=0;mu<Nd;mu++) volume=volume*latt4[mu];
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double flops=(single_site_flops*volume*ncall)/2.0;
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std::cout<< flops/(t1-t0);
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}
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}
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}
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