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Single prec benchmark in double prec compile
This commit is contained in:
Peter Boyle
364
benchmarks/Benchmark_dwf_fp32.cc
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364
benchmarks/Benchmark_dwf_fp32.cc
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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/Grid.h>
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#ifdef GRID_CUDA
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#define CUDA_PROFILE
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#endif
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#ifdef CUDA_PROFILE
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#include <cuda_profiler_api.h>
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#endif
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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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int main (int argc, char ** argv)
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{
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Grid_init(&argc,&argv);
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int threads = GridThread::GetThreads();
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Coordinate latt4 = GridDefaultLatt();
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int Ls=8;
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for(int i=0;i<argc;i++)
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if(std::string(argv[i]) == "-Ls"){
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std::stringstream ss(argv[i+1]); ss >> Ls;
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}
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GridLogLayout();
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long unsigned int single_site_flops = 8*Nc*(7+16*Nc);
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GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(GridDefaultLatt(), GridDefaultSimd(Nd,vComplexF::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::cout << GridLogMessage << "Making s innermost grids"<<std::endl;
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GridCartesian * sUGrid = SpaceTimeGrid::makeFourDimDWFGrid(GridDefaultLatt(),GridDefaultMpi());
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GridRedBlackCartesian * sUrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(sUGrid);
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GridCartesian * sFGrid = SpaceTimeGrid::makeFiveDimDWFGrid(Ls,UGrid);
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GridRedBlackCartesian * sFrbGrid = SpaceTimeGrid::makeFiveDimDWFRedBlackGrid(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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std::cout << GridLogMessage << "Initialising 4d RNG" << std::endl;
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GridParallelRNG RNG4(UGrid); RNG4.SeedUniqueString(std::string("The 4D RNG"));
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std::cout << GridLogMessage << "Initialising 5d RNG" << std::endl;
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GridParallelRNG RNG5(FGrid); RNG5.SeedUniqueString(std::string("The 5D RNG"));
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std::cout << GridLogMessage << "Initialised RNGs" << std::endl;
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LatticeFermionF src (FGrid); random(RNG5,src);
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#if 0
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src = Zero();
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{
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Coordinate origin({0,0,0,latt4[2]-1,0});
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SpinColourVectorF tmp;
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tmp=Zero();
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tmp()(0)(0)=Complex(-2.0,0.0);
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std::cout << " source site 0 " << tmp<<std::endl;
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pokeSite(tmp,src,origin);
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}
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#else
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RealD N2 = 1.0/::sqrt(norm2(src));
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src = src*N2;
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#endif
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LatticeFermionF result(FGrid); result=Zero();
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LatticeFermionF ref(FGrid); ref=Zero();
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LatticeFermionF tmp(FGrid);
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LatticeFermionF err(FGrid);
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std::cout << GridLogMessage << "Drawing gauge field" << std::endl;
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LatticeGaugeFieldF Umu(UGrid);
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SU<Nc>::HotConfiguration(RNG4,Umu);
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std::cout << GridLogMessage << "Random gauge initialised " << std::endl;
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#if 0
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Umu=1.0;
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for(int mu=0;mu<Nd;mu++){
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LatticeColourMatrixF ttmp(UGrid);
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ttmp = PeekIndex<LorentzIndex>(Umu,mu);
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// if (mu !=2 ) ttmp = 0;
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// ttmp = ttmp* pow(10.0,mu);
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PokeIndex<LorentzIndex>(Umu,ttmp,mu);
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}
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std::cout << GridLogMessage << "Forced to diagonal " << std::endl;
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#endif
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////////////////////////////////////
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// Naive wilson implementation
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////////////////////////////////////
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// replicate across fifth dimension
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LatticeGaugeFieldF Umu5d(FGrid);
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std::vector<LatticeColourMatrixF> U(4,FGrid);
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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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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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std::cout << GridLogMessage << "Setting up Cshift based reference " << std::endl;
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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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RealD NP = UGrid->_Nprocessors;
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RealD NN = UGrid->NodeCount();
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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<< "* Benchmarking DomainWallFermionR::Dhop "<<std::endl;
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std::cout << GridLogMessage<< "* Vectorising space-time by "<<vComplexF::Nsimd()<<std::endl;
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std::cout << GridLogMessage<< "* VComplexF size is "<<sizeof(vComplexF)<< " B"<<std::endl;
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if ( sizeof(RealF)==4 ) std::cout << GridLogMessage<< "* SINGLE precision "<<std::endl;
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if ( sizeof(RealF)==8 ) std::cout << GridLogMessage<< "* DOUBLE precision "<<std::endl;
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#ifdef GRID_OMP
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if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsAndCompute ) std::cout << GridLogMessage<< "* Using Overlapped Comms/Compute" <<std::endl;
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if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsThenCompute) std::cout << GridLogMessage<< "* Using sequential comms compute" <<std::endl;
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#endif
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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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DomainWallFermionF Dw(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
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int ncall =1000;
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if (1) {
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FGrid->Barrier();
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Dw.ZeroCounters();
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Dw.Dhop(src,result,0);
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std::cout<<GridLogMessage<<"Called warmup"<<std::endl;
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double t0=usecond();
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for(int i=0;i<ncall;i++){
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__SSC_START;
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Dw.Dhop(src,result,0);
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__SSC_STOP;
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}
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double t1=usecond();
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FGrid->Barrier();
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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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auto nsimd = vComplex::Nsimd();
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auto simdwidth = sizeof(vComplex);
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// RF: Nd Wilson * Ls, Nd gauge * Ls, Nc colors
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double data_rf = volume * ((2*Nd+1)*Nd*Nc + 2*Nd*Nc*Nc) * simdwidth / nsimd * ncall / (1024.*1024.*1024.);
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// mem: Nd Wilson * Ls, Nd gauge, Nc colors
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double data_mem = (volume * (2*Nd+1)*Nd*Nc + (volume/Ls) *2*Nd*Nc*Nc) * simdwidth / nsimd * ncall / (1024.*1024.*1024.);
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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 rank = "<< flops/(t1-t0)/NP<<std::endl;
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std::cout<<GridLogMessage << "mflop/s per node = "<< flops/(t1-t0)/NN<<std::endl;
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std::cout<<GridLogMessage << "RF GiB/s (base 2) = "<< 1000000. * data_rf/((t1-t0))<<std::endl;
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std::cout<<GridLogMessage << "mem GiB/s (base 2) = "<< 1000000. * data_mem/((t1-t0))<<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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//exit(0);
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if(( norm2(err)>1.0e-4) ) {
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/*
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std::cout << "RESULT\n " << result<<std::endl;
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std::cout << "REF \n " << ref <<std::endl;
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std::cout << "ERR \n " << err <<std::endl;
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*/
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std::cout<<GridLogMessage << "WRONG RESULT" << std::endl;
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FGrid->Barrier();
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exit(-1);
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}
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assert (norm2(err)< 1.0e-4 );
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Dw.Report();
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}
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if (1)
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{ // Naive wilson dag implementation
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ref = Zero();
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for(int mu=0;mu<Nd;mu++){
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// ref = src - Gamma(Gamma::Algebra::GammaX)* src ; // 1+gamma_x
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tmp = U[mu]*Cshift(src,mu+1,1);
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{
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autoView( ref_v, ref, CpuWrite);
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autoView( tmp_v, tmp, CpuRead);
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for(int i=0;i<ref_v.size();i++){
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ref_v[i]+= tmp_v[i] + Gamma(Gmu[mu])*tmp_v[i]; ;
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}
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}
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tmp =adj(U[mu])*src;
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tmp =Cshift(tmp,mu+1,-1);
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{
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autoView( ref_v, ref, CpuWrite);
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autoView( tmp_v, tmp, CpuRead);
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for(int i=0;i<ref_v.size();i++){
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ref_v[i]+= tmp_v[i] - Gamma(Gmu[mu])*tmp_v[i]; ;
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}
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}
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}
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ref = -0.5*ref;
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}
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// dump=1;
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Dw.Dhop(src,result,1);
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std::cout << GridLogMessage << "Compare to naive wilson implementation Dag to verify correctness" << std::endl;
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std::cout<<GridLogMessage << "Called DwDag"<<std::endl;
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std::cout<<GridLogMessage << "norm dag result "<< norm2(result)<<std::endl;
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std::cout<<GridLogMessage << "norm dag ref "<< norm2(ref)<<std::endl;
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err = ref-result;
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std::cout<<GridLogMessage << "norm dag diff "<< norm2(err)<<std::endl;
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if((norm2(err)>1.0e-4)){
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/*
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std::cout<< "DAG RESULT\n " <<ref << std::endl;
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std::cout<< "DAG sRESULT\n " <<result << std::endl;
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std::cout<< "DAG ERR \n " << err <<std::endl;
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*/
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}
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LatticeFermionF src_e (FrbGrid);
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LatticeFermionF src_o (FrbGrid);
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LatticeFermionF r_e (FrbGrid);
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LatticeFermionF r_o (FrbGrid);
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LatticeFermionF r_eo (FGrid);
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std::cout<<GridLogMessage << "Calling Deo and Doe and //assert Deo+Doe == Dunprec"<<std::endl;
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pickCheckerboard(Even,src_e,src);
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pickCheckerboard(Odd,src_o,src);
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std::cout<<GridLogMessage << "src_e"<<norm2(src_e)<<std::endl;
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std::cout<<GridLogMessage << "src_o"<<norm2(src_o)<<std::endl;
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// S-direction is INNERMOST and takes no part in the parity.
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std::cout << GridLogMessage<< "*********************************************************" <<std::endl;
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std::cout << GridLogMessage<< "* Benchmarking DomainWallFermionF::DhopEO "<<std::endl;
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std::cout << GridLogMessage<< "* Vectorising space-time by "<<vComplexF::Nsimd()<<std::endl;
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if ( sizeof(RealF)==4 ) std::cout << GridLogMessage<< "* SINGLE precision "<<std::endl;
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if ( sizeof(RealF)==8 ) std::cout << GridLogMessage<< "* DOUBLE precision "<<std::endl;
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#ifdef GRID_OMP
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if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsAndCompute ) std::cout << GridLogMessage<< "* Using Overlapped Comms/Compute" <<std::endl;
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if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsThenCompute) std::cout << GridLogMessage<< "* Using sequential comms compute" <<std::endl;
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#endif
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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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{
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Dw.ZeroCounters();
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FGrid->Barrier();
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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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#ifdef CUDA_PROFILE
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if(i==10) cudaProfilerStart();
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#endif
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Dw.DhopEO(src_o,r_e,DaggerNo);
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#ifdef CUDA_PROFILE
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if(i==20) cudaProfilerStop();
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#endif
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}
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double t1=usecond();
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FGrid->Barrier();
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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<<GridLogMessage << "Deo mflop/s = "<< flops/(t1-t0)<<std::endl;
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std::cout<<GridLogMessage << "Deo mflop/s per rank "<< flops/(t1-t0)/NP<<std::endl;
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std::cout<<GridLogMessage << "Deo mflop/s per node "<< flops/(t1-t0)/NN<<std::endl;
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Dw.Report();
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}
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Dw.DhopEO(src_o,r_e,DaggerNo);
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Dw.DhopOE(src_e,r_o,DaggerNo);
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Dw.Dhop (src ,result,DaggerNo);
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std::cout<<GridLogMessage << "r_e"<<norm2(r_e)<<std::endl;
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std::cout<<GridLogMessage << "r_o"<<norm2(r_o)<<std::endl;
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std::cout<<GridLogMessage << "res"<<norm2(result)<<std::endl;
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setCheckerboard(r_eo,r_o);
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setCheckerboard(r_eo,r_e);
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err = r_eo-result;
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std::cout<<GridLogMessage << "norm diff "<< norm2(err)<<std::endl;
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if((norm2(err)>1.0e-4)){
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/*
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std::cout<< "Deo RESULT\n " <<r_eo << std::endl;
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std::cout<< "Deo REF\n " <<result << std::endl;
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std::cout<< "Deo ERR \n " << err <<std::endl;
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*/
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}
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pickCheckerboard(Even,src_e,err);
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pickCheckerboard(Odd,src_o,err);
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std::cout<<GridLogMessage << "norm diff even "<< norm2(src_e)<<std::endl;
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std::cout<<GridLogMessage << "norm diff odd "<< norm2(src_o)<<std::endl;
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assert(norm2(src_e)<1.0e-4);
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assert(norm2(src_o)<1.0e-4);
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Grid_finalize();
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exit(0);
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}
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