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153 lines
6.5 KiB
C++
153 lines
6.5 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./benchmarks/Benchmark_wilson.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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Author: Richard Rollins <rprollins@users.noreply.github.com>
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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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;
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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 bench_wilson (
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LatticeFermion & src,
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LatticeFermion & result,
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WilsonFermionR & Dw,
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double const volume,
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int const dag );
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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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typename WilsonFermionR::ImplParams params;
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Coordinate simd_layout = GridDefaultSimd(Nd,vComplex::Nsimd());
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Coordinate mpi_layout = GridDefaultMpi();
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std::vector<int> seeds({1,2,3,4});
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RealD mass = 0.1;
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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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std::cout << GridLogMessage<< "*****************************************************************" <<std::endl;
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std::cout << GridLogMessage<< "* Number of colours "<< Nc <<std::endl;
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std::cout << GridLogMessage<< "* Benchmarking WilsonFermionR::Dhop "<<std::endl;
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std::cout << GridLogMessage<< "* Vectorising space-time by "<<vComplex::Nsimd()<<std::endl;
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if ( sizeof(Real)==4 ) std::cout << GridLogMessage<< "* SINGLE precision "<<std::endl;
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if ( sizeof(Real)==8 ) std::cout << GridLogMessage<< "* DOUBLE precision "<<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 << "* OpenMP threads : "<< GridThread::GetThreads() <<std::endl;
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std::cout << GridLogMessage << "* MPI tasks : "<< GridCmdVectorIntToString(mpi_layout) << std::endl;
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std::cout << GridLogMessage<< "*****************************************************************" <<std::endl;
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std::cout<<GridLogMessage << "================================================================================================="<< std::endl;
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std::cout<<GridLogMessage << "= Benchmarking Wilson operator in the fundamental representation" << std::endl;
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std::cout<<GridLogMessage << "================================================================================================="<< std::endl;
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std::cout<<GridLogMessage << "Volume\t\t\tWilson/MFLOPs\tWilsonDag/MFLOPs\tWilsonEO/MFLOPs\tWilsonDagEO/MFLOPs" << std::endl;
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std::cout<<GridLogMessage << "================================================================================================="<< std::endl;
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int Lmax = 32;
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int dmin = 0;
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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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{
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Coordinate latt_size = Coordinate(4,L);
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for(int d=4; d>dmin; d--)
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{
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if ( d<=3 ) { latt_size[d] *= 2; }
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std::cout << GridLogMessage;
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std::cout << latt_size;
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GridCartesian Grid(latt_size,simd_layout,mpi_layout);
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GridRedBlackCartesian RBGrid(&Grid);
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GridParallelRNG pRNG(&Grid); pRNG.SeedFixedIntegers(seeds);
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LatticeGaugeField Umu(&Grid); random(pRNG,Umu);
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LatticeFermion src(&Grid); random(pRNG,src);
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LatticeFermion src_o(&RBGrid); pickCheckerboard(Odd,src_o,src);
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LatticeFermion result(&Grid); result=Zero();
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LatticeFermion result_e(&RBGrid); result_e=Zero();
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double volume = std::accumulate(latt_size.begin(),latt_size.end(),1,std::multiplies<int>());
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WilsonFermionR Dw(Umu,Grid,RBGrid,mass,params);
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// Full operator
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bench_wilson(src,result,Dw,volume,DaggerNo);
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bench_wilson(src,result,Dw,volume,DaggerYes);
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std::cout << "\t";
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// EO
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bench_wilson(src,result,Dw,volume,DaggerNo);
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bench_wilson(src,result,Dw,volume,DaggerYes);
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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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Grid_finalize();
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}
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void bench_wilson (
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LatticeFermion & src,
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LatticeFermion & result,
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WilsonFermionR & Dw,
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double const volume,
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int const dag )
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{
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int ncall = 1000;
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long unsigned int single_site_flops = 8*Nc*(7+16*Nc);
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double t0 = usecond();
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for(int i=0; i<ncall; i++) { Dw.Dhop(src,result,dag); }
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double t1 = usecond();
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double flops = single_site_flops * volume * ncall;
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std::cout << flops/(t1-t0) << "\t\t";
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}
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void bench_wilson_eo (
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LatticeFermion & src,
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LatticeFermion & result,
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WilsonFermionR & Dw,
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double const volume,
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int const dag )
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{
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int ncall = 1000;
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long unsigned int single_site_flops = 8*Nc*(7+16*Nc);
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double t0 = usecond();
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for(int i=0; i<ncall; i++) { Dw.DhopEO(src,result,dag); }
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double t1 = usecond();
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double flops = (single_site_flops * volume * ncall)/2.0;
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std::cout << flops/(t1-t0) << "\t\t";
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}
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