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808 lines
33 KiB
C++
808 lines
33 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./benchmarks/Benchmark_memory_bandwidth.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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using namespace Grid::QCD;
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typedef WilsonFermion5D<DomainWallVec5dImplR> WilsonFermion5DR;
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typedef WilsonFermion5D<DomainWallVec5dImplF> WilsonFermion5DF;
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typedef WilsonFermion5D<DomainWallVec5dImplD> WilsonFermion5DD;
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std::vector<int> L_list;
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std::vector<int> Ls_list;
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std::vector<double> mflop_list;
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double mflop_ref;
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double mflop_ref_err;
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int NN_global;
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struct time_statistics{
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double mean;
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double err;
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double min;
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double max;
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void statistics(std::vector<double> v){
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double sum = std::accumulate(v.begin(), v.end(), 0.0);
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mean = sum / v.size();
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std::vector<double> diff(v.size());
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std::transform(v.begin(), v.end(), diff.begin(), [=](double x) { return x - mean; });
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double sq_sum = std::inner_product(diff.begin(), diff.end(), diff.begin(), 0.0);
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err = std::sqrt(sq_sum / (v.size()*(v.size() - 1)));
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auto result = std::minmax_element(v.begin(), v.end());
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min = *result.first;
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max = *result.second;
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}
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};
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void comms_header(){
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std::cout <<GridLogMessage << " L "<<"\t"<<" Ls "<<"\t"
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<<std::setw(11)<<"bytes"<<"MB/s uni (err/min/max)"<<"\t\t"<<"MB/s bidi (err/min/max)"<<std::endl;
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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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struct controls {
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int Opt;
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int CommsOverlap;
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Grid::CartesianCommunicator::CommunicatorPolicy_t CommsAsynch;
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// int HugePages;
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};
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class Benchmark {
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public:
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static void Decomposition (void ) {
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int threads = GridThread::GetThreads();
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std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
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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<<"Grid Default Decomposition patterns\n";
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std::cout<<GridLogMessage<<"\tOpenMP threads : "<<GridThread::GetThreads()<<std::endl;
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std::cout<<GridLogMessage<<"\tMPI tasks : "<<GridCmdVectorIntToString(GridDefaultMpi())<<std::endl;
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std::cout<<GridLogMessage<<"\tvReal : "<<sizeof(vReal )*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vReal::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage<<"\tvRealF : "<<sizeof(vRealF)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vRealF::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage<<"\tvRealD : "<<sizeof(vRealD)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vRealD::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage<<"\tvComplex : "<<sizeof(vComplex )*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vComplex::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage<<"\tvComplexF : "<<sizeof(vComplexF)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vComplexF::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage<<"\tvComplexD : "<<sizeof(vComplexD)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vComplexD::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
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}
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static void Comms(void)
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{
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int Nloop=200;
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int nmu=0;
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int maxlat=32;
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std::vector<int> simd_layout = GridDefaultSimd(Nd,vComplexD::Nsimd());
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std::vector<int> mpi_layout = GridDefaultMpi();
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for(int mu=0;mu<Nd;mu++) if (mpi_layout[mu]>1) nmu++;
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std::vector<double> t_time(Nloop);
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time_statistics timestat;
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std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
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std::cout<<GridLogMessage << "= Benchmarking threaded STENCIL halo exchange in "<<nmu<<" dimensions"<<std::endl;
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std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
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comms_header();
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for(int lat=4;lat<=maxlat;lat+=4){
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for(int Ls=8;Ls<=8;Ls*=2){
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std::vector<int> latt_size ({lat*mpi_layout[0],
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lat*mpi_layout[1],
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lat*mpi_layout[2],
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lat*mpi_layout[3]});
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GridCartesian Grid(latt_size,simd_layout,mpi_layout);
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RealD Nrank = Grid._Nprocessors;
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RealD Nnode = Grid.NodeCount();
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RealD ppn = Nrank/Nnode;
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std::vector<HalfSpinColourVectorD *> xbuf(8);
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std::vector<HalfSpinColourVectorD *> rbuf(8);
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Grid.ShmBufferFreeAll();
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for(int d=0;d<8;d++){
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xbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
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rbuf[d] = (HalfSpinColourVectorD *)Grid.ShmBufferMalloc(lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
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bzero((void *)xbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
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bzero((void *)rbuf[d],lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD));
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}
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int bytes=lat*lat*lat*Ls*sizeof(HalfSpinColourVectorD);
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int ncomm;
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double dbytes;
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std::vector<double> times(Nloop);
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for(int i=0;i<Nloop;i++){
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double start=usecond();
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dbytes=0;
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ncomm=0;
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#ifdef GRID_OMP
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#pragma omp parallel for num_threads(Grid::CartesianCommunicator::nCommThreads)
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#endif
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for(int dir=0;dir<8;dir++){
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double tbytes;
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int mu =dir % 4;
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if (mpi_layout[mu]>1 ) {
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int xmit_to_rank;
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int recv_from_rank;
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if ( dir == mu ) {
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int comm_proc=1;
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Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
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} else {
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int comm_proc = mpi_layout[mu]-1;
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Grid.ShiftedRanks(mu,comm_proc,xmit_to_rank,recv_from_rank);
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}
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#ifdef GRID_OMP
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int tid = omp_get_thread_num();
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#else
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int tid = dir;
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#endif
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tbytes= Grid.StencilSendToRecvFrom((void *)&xbuf[dir][0], xmit_to_rank,
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(void *)&rbuf[dir][0], recv_from_rank,
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bytes,tid);
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#ifdef GRID_OMP
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#pragma omp atomic
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#endif
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ncomm++;
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#ifdef GRID_OMP
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#pragma omp atomic
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#endif
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dbytes+=tbytes;
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}
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}
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Grid.Barrier();
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double stop=usecond();
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t_time[i] = stop-start; // microseconds
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}
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timestat.statistics(t_time);
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// for(int i=0;i<t_time.size();i++){
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// std::cout << i<<" "<<t_time[i]<<std::endl;
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// }
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dbytes=dbytes*ppn;
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double xbytes = dbytes*0.5;
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double rbytes = dbytes*0.5;
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double bidibytes = dbytes;
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std::cout<<GridLogMessage << std::setw(4) << lat<<"\t"<<Ls<<"\t"
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<<std::setw(11) << bytes<< std::fixed << std::setprecision(1) << std::setw(7)
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<<std::right<< xbytes/timestat.mean<<" "<< xbytes*timestat.err/(timestat.mean*timestat.mean)<< " "
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<<xbytes/timestat.max <<" "<< xbytes/timestat.min
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<< "\t\t"<<std::setw(7)<< bidibytes/timestat.mean<< " " << bidibytes*timestat.err/(timestat.mean*timestat.mean) << " "
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<< bidibytes/timestat.max << " " << bidibytes/timestat.min << std::endl;
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}
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}
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return;
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}
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static void Memory(void)
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{
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const int Nvec=8;
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typedef Lattice< iVector< vReal,Nvec> > LatticeVec;
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typedef iVector<vReal,Nvec> Vec;
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std::vector<int> simd_layout = GridDefaultSimd(Nd,vReal::Nsimd());
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std::vector<int> mpi_layout = GridDefaultMpi();
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std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
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std::cout<<GridLogMessage << "= Benchmarking a*x + y bandwidth"<<std::endl;
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std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
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std::cout<<GridLogMessage << " L "<<"\t\t"<<"bytes"<<"\t\t\t"<<"GB/s"<<"\t\t"<<"Gflop/s"<<"\t\t seconds"<< "\t\tGB/s / node"<<std::endl;
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std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
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uint64_t NP;
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uint64_t NN;
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uint64_t lmax=48;
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#define NLOOP (100*lmax*lmax*lmax*lmax/lat/lat/lat/lat)
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GridSerialRNG sRNG; sRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
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for(int lat=8;lat<=lmax;lat+=4){
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std::vector<int> latt_size ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
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int64_t vol= latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
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GridCartesian Grid(latt_size,simd_layout,mpi_layout);
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NP= Grid.RankCount();
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NN =Grid.NodeCount();
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Vec rn ; random(sRNG,rn);
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LatticeVec z(&Grid); z=rn;
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LatticeVec x(&Grid); x=rn;
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LatticeVec y(&Grid); y=rn;
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double a=2.0;
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uint64_t Nloop=NLOOP;
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double start=usecond();
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for(int i=0;i<Nloop;i++){
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z=a*x-y;
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x._odata[0]=z._odata[0]; // force serial dependency to prevent optimise away
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y._odata[4]=z._odata[4];
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}
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double stop=usecond();
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double time = (stop-start)/Nloop*1000;
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double flops=vol*Nvec*2;// mul,add
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double bytes=3.0*vol*Nvec*sizeof(Real);
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std::cout<<GridLogMessage<<std::setprecision(3)
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<< lat<<"\t\t"<<bytes<<" \t\t"<<bytes/time<<"\t\t"<<flops/time<<"\t\t"<<(stop-start)/1000./1000.
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<< "\t\t"<< bytes/time/NN <<std::endl;
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}
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};
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static double DWF5(int Ls,int L)
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{
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RealD mass=0.1;
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RealD M5 =1.8;
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double mflops;
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double mflops_best = 0;
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double mflops_worst= 0;
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std::vector<double> mflops_all;
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///////////////////////////////////////////////////////
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// Set/Get the layout & grid size
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///////////////////////////////////////////////////////
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int threads = GridThread::GetThreads();
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std::vector<int> mpi = GridDefaultMpi(); assert(mpi.size()==4);
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std::vector<int> local({L,L,L,L});
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GridCartesian * TmpGrid = SpaceTimeGrid::makeFourDimGrid(std::vector<int>({64,64,64,64}),
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GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
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uint64_t NP = TmpGrid->RankCount();
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uint64_t NN = TmpGrid->NodeCount();
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NN_global=NN;
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uint64_t SHM=NP/NN;
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std::vector<int> internal;
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if ( SHM == 1 ) internal = std::vector<int>({1,1,1,1});
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else if ( SHM == 2 ) internal = std::vector<int>({2,1,1,1});
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else if ( SHM == 4 ) internal = std::vector<int>({2,2,1,1});
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else if ( SHM == 8 ) internal = std::vector<int>({2,2,2,1});
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else assert(0);
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std::vector<int> nodes({mpi[0]/internal[0],mpi[1]/internal[1],mpi[2]/internal[2],mpi[3]/internal[3]});
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std::vector<int> latt4({local[0]*nodes[0],local[1]*nodes[1],local[2]*nodes[2],local[3]*nodes[3]});
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///////// Welcome message ////////////
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std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
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std::cout<<GridLogMessage << "Benchmark DWF Ls vec on "<<L<<"^4 local volume "<<std::endl;
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std::cout<<GridLogMessage << "* Global volume : "<<GridCmdVectorIntToString(latt4)<<std::endl;
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std::cout<<GridLogMessage << "* Ls : "<<Ls<<std::endl;
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std::cout<<GridLogMessage << "* MPI ranks : "<<GridCmdVectorIntToString(mpi)<<std::endl;
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std::cout<<GridLogMessage << "* Intranode : "<<GridCmdVectorIntToString(internal)<<std::endl;
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std::cout<<GridLogMessage << "* nodes : "<<GridCmdVectorIntToString(nodes)<<std::endl;
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std::cout<<GridLogMessage << "* Using "<<threads<<" threads"<<std::endl;
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std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
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///////// Lattice Init ////////////
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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 * sUGrid = SpaceTimeGrid::makeFourDimDWFGrid(latt4,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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///////// RNG Init ////////////
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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(sFGrid); RNG5.SeedFixedIntegers(seeds5);
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std::cout << GridLogMessage << "Initialised RNGs" << std::endl;
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///////// Source preparation ////////////
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LatticeFermion src (sFGrid); random(RNG5,src);
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LatticeFermion tmp (sFGrid);
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RealD N2 = 1.0/::sqrt(norm2(src));
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src = src*N2;
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LatticeGaugeField Umu(UGrid); SU3::HotConfiguration(RNG4,Umu);
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WilsonFermion5DR sDw(Umu,*sFGrid,*sFrbGrid,*sUGrid,*sUrbGrid,M5);
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LatticeFermion src_e (sFrbGrid);
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LatticeFermion src_o (sFrbGrid);
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LatticeFermion r_e (sFrbGrid);
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LatticeFermion r_o (sFrbGrid);
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LatticeFermion r_eo (sFGrid);
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LatticeFermion err (sFGrid);
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{
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pickCheckerboard(Even,src_e,src);
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pickCheckerboard(Odd,src_o,src);
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#if defined(AVX512)
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const int num_cases = 6;
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std::string fmt("A/S ; A/O ; U/S ; U/O ; G/S ; G/O ");
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#else
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const int num_cases = 4;
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std::string fmt("U/S ; U/O ; G/S ; G/O ");
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#endif
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controls Cases [] = {
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#ifdef AVX512
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{ QCD::WilsonKernelsStatic::OptInlineAsm , QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential },
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{ QCD::WilsonKernelsStatic::OptInlineAsm , QCD::WilsonKernelsStatic::CommsAndCompute ,CartesianCommunicator::CommunicatorPolicySequential },
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#endif
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{ QCD::WilsonKernelsStatic::OptHandUnroll, QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential },
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{ QCD::WilsonKernelsStatic::OptHandUnroll, QCD::WilsonKernelsStatic::CommsAndCompute ,CartesianCommunicator::CommunicatorPolicySequential },
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{ QCD::WilsonKernelsStatic::OptGeneric , QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential },
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{ QCD::WilsonKernelsStatic::OptGeneric , QCD::WilsonKernelsStatic::CommsAndCompute ,CartesianCommunicator::CommunicatorPolicySequential }
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};
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for(int c=0;c<num_cases;c++) {
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QCD::WilsonKernelsStatic::Comms = Cases[c].CommsOverlap;
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QCD::WilsonKernelsStatic::Opt = Cases[c].Opt;
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CartesianCommunicator::SetCommunicatorPolicy(Cases[c].CommsAsynch);
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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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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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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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std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
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int nwarm = 100;
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uint64_t ncall = 1000;
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double t0=usecond();
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sFGrid->Barrier();
|
|
for(int i=0;i<nwarm;i++){
|
|
sDw.DhopEO(src_o,r_e,DaggerNo);
|
|
}
|
|
sFGrid->Barrier();
|
|
double t1=usecond();
|
|
|
|
sDw.ZeroCounters();
|
|
time_statistics timestat;
|
|
std::vector<double> t_time(ncall);
|
|
for(uint64_t i=0;i<ncall;i++){
|
|
t0=usecond();
|
|
sDw.DhopEO(src_o,r_e,DaggerNo);
|
|
t1=usecond();
|
|
t_time[i] = t1-t0;
|
|
}
|
|
sFGrid->Barrier();
|
|
|
|
double volume=Ls; for(int mu=0;mu<Nd;mu++) volume=volume*latt4[mu];
|
|
double flops=(1344.0*volume)/2;
|
|
double mf_hi, mf_lo, mf_err;
|
|
|
|
timestat.statistics(t_time);
|
|
mf_hi = flops/timestat.min;
|
|
mf_lo = flops/timestat.max;
|
|
mf_err= flops/timestat.min * timestat.err/timestat.mean;
|
|
|
|
mflops = flops/timestat.mean;
|
|
mflops_all.push_back(mflops);
|
|
if ( mflops_best == 0 ) mflops_best = mflops;
|
|
if ( mflops_worst== 0 ) mflops_worst= mflops;
|
|
if ( mflops>mflops_best ) mflops_best = mflops;
|
|
if ( mflops<mflops_worst) mflops_worst= mflops;
|
|
|
|
std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"sDeo mflop/s = "<< mflops << " ("<<mf_err<<") " << mf_lo<<"-"<<mf_hi <<std::endl;
|
|
std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"sDeo mflop/s per rank "<< mflops/NP<<std::endl;
|
|
std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"sDeo mflop/s per node "<< mflops/NN<<std::endl;
|
|
|
|
sDw.Report();
|
|
|
|
}
|
|
double robust = mflops_worst/mflops_best;;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << L<<"^4 x "<<Ls<< " sDeo Best mflop/s = "<< mflops_best << " ; " << mflops_best/NN<<" per node " <<std::endl;
|
|
std::cout<<GridLogMessage << L<<"^4 x "<<Ls<< " sDeo Worst mflop/s = "<< mflops_worst<< " ; " << mflops_worst/NN<<" per node " <<std::endl;
|
|
|
|
std::cout<<GridLogMessage <<std::setprecision(3)<< L<<"^4 x "<<Ls<< " Performance Robustness = "<< robust <<std::endl;
|
|
std::cout<<GridLogMessage <<fmt << std::endl;
|
|
std::cout<<GridLogMessage;
|
|
|
|
for(int i=0;i<mflops_all.size();i++){
|
|
std::cout<<mflops_all[i]/NN<<" ; " ;
|
|
}
|
|
std::cout<<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
|
|
}
|
|
return mflops_best;
|
|
}
|
|
|
|
static double DWF(int Ls,int L, double & robust)
|
|
{
|
|
RealD mass=0.1;
|
|
RealD M5 =1.8;
|
|
|
|
double mflops;
|
|
double mflops_best = 0;
|
|
double mflops_worst= 0;
|
|
std::vector<double> mflops_all;
|
|
|
|
///////////////////////////////////////////////////////
|
|
// Set/Get the layout & grid size
|
|
///////////////////////////////////////////////////////
|
|
int threads = GridThread::GetThreads();
|
|
std::vector<int> mpi = GridDefaultMpi(); assert(mpi.size()==4);
|
|
std::vector<int> local({L,L,L,L});
|
|
|
|
GridCartesian * TmpGrid = SpaceTimeGrid::makeFourDimGrid(std::vector<int>({64,64,64,64}),
|
|
GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
|
|
uint64_t NP = TmpGrid->RankCount();
|
|
uint64_t NN = TmpGrid->NodeCount();
|
|
NN_global=NN;
|
|
uint64_t SHM=NP/NN;
|
|
|
|
std::vector<int> internal;
|
|
if ( SHM == 1 ) internal = std::vector<int>({1,1,1,1});
|
|
else if ( SHM == 2 ) internal = std::vector<int>({2,1,1,1});
|
|
else if ( SHM == 4 ) internal = std::vector<int>({2,2,1,1});
|
|
else if ( SHM == 8 ) internal = std::vector<int>({2,2,2,1});
|
|
else assert(0);
|
|
|
|
std::vector<int> nodes({mpi[0]/internal[0],mpi[1]/internal[1],mpi[2]/internal[2],mpi[3]/internal[3]});
|
|
std::vector<int> latt4({local[0]*nodes[0],local[1]*nodes[1],local[2]*nodes[2],local[3]*nodes[3]});
|
|
|
|
///////// Welcome message ////////////
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << "Benchmark DWF on "<<L<<"^4 local volume "<<std::endl;
|
|
std::cout<<GridLogMessage << "* Global volume : "<<GridCmdVectorIntToString(latt4)<<std::endl;
|
|
std::cout<<GridLogMessage << "* Ls : "<<Ls<<std::endl;
|
|
std::cout<<GridLogMessage << "* MPI ranks : "<<GridCmdVectorIntToString(mpi)<<std::endl;
|
|
std::cout<<GridLogMessage << "* Intranode : "<<GridCmdVectorIntToString(internal)<<std::endl;
|
|
std::cout<<GridLogMessage << "* nodes : "<<GridCmdVectorIntToString(nodes)<<std::endl;
|
|
std::cout<<GridLogMessage << "* Using "<<threads<<" threads"<<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
|
|
|
|
///////// Lattice Init ////////////
|
|
GridCartesian * UGrid = SpaceTimeGrid::makeFourDimGrid(latt4, GridDefaultSimd(Nd,vComplex::Nsimd()),GridDefaultMpi());
|
|
GridRedBlackCartesian * UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
|
|
GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,UGrid);
|
|
GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,UGrid);
|
|
|
|
|
|
///////// RNG Init ////////////
|
|
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);
|
|
std::cout << GridLogMessage << "Initialised RNGs" << std::endl;
|
|
|
|
///////// Source preparation ////////////
|
|
LatticeFermion src (FGrid); random(RNG5,src);
|
|
LatticeFermion ref (FGrid);
|
|
LatticeFermion tmp (FGrid);
|
|
|
|
RealD N2 = 1.0/::sqrt(norm2(src));
|
|
src = src*N2;
|
|
|
|
LatticeGaugeField Umu(UGrid); SU3::HotConfiguration(RNG4,Umu);
|
|
|
|
DomainWallFermionR Dw(Umu,*FGrid,*FrbGrid,*UGrid,*UrbGrid,mass,M5);
|
|
|
|
////////////////////////////////////
|
|
// Naive wilson implementation
|
|
////////////////////////////////////
|
|
{
|
|
LatticeGaugeField Umu5d(FGrid);
|
|
std::vector<LatticeColourMatrix> U(4,FGrid);
|
|
for(int ss=0;ss<Umu._grid->oSites();ss++){
|
|
for(int s=0;s<Ls;s++){
|
|
Umu5d._odata[Ls*ss+s] = Umu._odata[ss];
|
|
}
|
|
}
|
|
ref = zero;
|
|
for(int mu=0;mu<Nd;mu++){
|
|
U[mu] = PeekIndex<LorentzIndex>(Umu5d,mu);
|
|
}
|
|
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;
|
|
}
|
|
|
|
LatticeFermion src_e (FrbGrid);
|
|
LatticeFermion src_o (FrbGrid);
|
|
LatticeFermion r_e (FrbGrid);
|
|
LatticeFermion r_o (FrbGrid);
|
|
LatticeFermion r_eo (FGrid);
|
|
LatticeFermion err (FGrid);
|
|
{
|
|
|
|
pickCheckerboard(Even,src_e,src);
|
|
pickCheckerboard(Odd,src_o,src);
|
|
|
|
#if defined(AVX512)
|
|
const int num_cases = 6;
|
|
std::string fmt("A/S ; A/O ; U/S ; U/O ; G/S ; G/O ");
|
|
#else
|
|
const int num_cases = 4;
|
|
std::string fmt("U/S ; U/O ; G/S ; G/O ");
|
|
#endif
|
|
controls Cases [] = {
|
|
#ifdef AVX512
|
|
{ QCD::WilsonKernelsStatic::OptInlineAsm , QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential },
|
|
{ QCD::WilsonKernelsStatic::OptInlineAsm , QCD::WilsonKernelsStatic::CommsAndCompute ,CartesianCommunicator::CommunicatorPolicySequential },
|
|
#endif
|
|
{ QCD::WilsonKernelsStatic::OptHandUnroll, QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential },
|
|
{ QCD::WilsonKernelsStatic::OptHandUnroll, QCD::WilsonKernelsStatic::CommsAndCompute ,CartesianCommunicator::CommunicatorPolicySequential },
|
|
{ QCD::WilsonKernelsStatic::OptGeneric , QCD::WilsonKernelsStatic::CommsThenCompute ,CartesianCommunicator::CommunicatorPolicySequential },
|
|
{ QCD::WilsonKernelsStatic::OptGeneric , QCD::WilsonKernelsStatic::CommsAndCompute ,CartesianCommunicator::CommunicatorPolicySequential }
|
|
};
|
|
|
|
for(int c=0;c<num_cases;c++) {
|
|
|
|
QCD::WilsonKernelsStatic::Comms = Cases[c].CommsOverlap;
|
|
QCD::WilsonKernelsStatic::Opt = Cases[c].Opt;
|
|
CartesianCommunicator::SetCommunicatorPolicy(Cases[c].CommsAsynch);
|
|
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptGeneric ) std::cout << GridLogMessage<< "* Using GENERIC Nc WilsonKernels" <<std::endl;
|
|
if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptHandUnroll) std::cout << GridLogMessage<< "* Using Nc=3 WilsonKernels" <<std::endl;
|
|
if ( WilsonKernelsStatic::Opt == WilsonKernelsStatic::OptInlineAsm ) std::cout << GridLogMessage<< "* Using Asm Nc=3 WilsonKernels" <<std::endl;
|
|
if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsAndCompute ) std::cout << GridLogMessage<< "* Using Overlapped Comms/Compute" <<std::endl;
|
|
if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsThenCompute) std::cout << GridLogMessage<< "* Using sequential comms compute" <<std::endl;
|
|
if ( sizeof(Real)==4 ) std::cout << GridLogMessage<< "* SINGLE precision "<<std::endl;
|
|
if ( sizeof(Real)==8 ) std::cout << GridLogMessage<< "* DOUBLE precision "<<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
|
|
int nwarm = 200;
|
|
double t0=usecond();
|
|
FGrid->Barrier();
|
|
for(int i=0;i<nwarm;i++){
|
|
Dw.DhopEO(src_o,r_e,DaggerNo);
|
|
}
|
|
FGrid->Barrier();
|
|
double t1=usecond();
|
|
// uint64_t ncall = (uint64_t) 2.5*1000.0*1000.0*nwarm/(t1-t0);
|
|
// if (ncall < 500) ncall = 500;
|
|
uint64_t ncall = 1000;
|
|
|
|
FGrid->Broadcast(0,&ncall,sizeof(ncall));
|
|
|
|
// std::cout << GridLogMessage << " Estimate " << ncall << " calls per second"<<std::endl;
|
|
Dw.ZeroCounters();
|
|
|
|
time_statistics timestat;
|
|
std::vector<double> t_time(ncall);
|
|
for(uint64_t i=0;i<ncall;i++){
|
|
t0=usecond();
|
|
Dw.DhopEO(src_o,r_e,DaggerNo);
|
|
t1=usecond();
|
|
t_time[i] = t1-t0;
|
|
}
|
|
FGrid->Barrier();
|
|
|
|
double volume=Ls; for(int mu=0;mu<Nd;mu++) volume=volume*latt4[mu];
|
|
double flops=(1344.0*volume)/2;
|
|
double mf_hi, mf_lo, mf_err;
|
|
|
|
timestat.statistics(t_time);
|
|
mf_hi = flops/timestat.min;
|
|
mf_lo = flops/timestat.max;
|
|
mf_err= flops/timestat.min * timestat.err/timestat.mean;
|
|
|
|
mflops = flops/timestat.mean;
|
|
mflops_all.push_back(mflops);
|
|
if ( mflops_best == 0 ) mflops_best = mflops;
|
|
if ( mflops_worst== 0 ) mflops_worst= mflops;
|
|
if ( mflops>mflops_best ) mflops_best = mflops;
|
|
if ( mflops<mflops_worst) mflops_worst= mflops;
|
|
|
|
std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"Deo mflop/s = "<< mflops << " ("<<mf_err<<") " << mf_lo<<"-"<<mf_hi <<std::endl;
|
|
std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"Deo mflop/s per rank "<< mflops/NP<<std::endl;
|
|
std::cout<<GridLogMessage << std::fixed << std::setprecision(1)<<"Deo mflop/s per node "<< mflops/NN<<std::endl;
|
|
|
|
Dw.Report();
|
|
|
|
Dw.DhopEO(src_o,r_e,DaggerNo);
|
|
Dw.DhopOE(src_e,r_o,DaggerNo);
|
|
setCheckerboard(r_eo,r_o);
|
|
setCheckerboard(r_eo,r_e);
|
|
err = r_eo-ref;
|
|
std::cout<<GridLogMessage << "norm diff "<< norm2(err)<<std::endl;
|
|
assert((norm2(err)<1.0e-4));
|
|
|
|
}
|
|
robust = mflops_worst/mflops_best;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << L<<"^4 x "<<Ls<< " Deo Best mflop/s = "<< mflops_best << " ; " << mflops_best/NN<<" per node " <<std::endl;
|
|
std::cout<<GridLogMessage << L<<"^4 x "<<Ls<< " Deo Worst mflop/s = "<< mflops_worst<< " ; " << mflops_worst/NN<<" per node " <<std::endl;
|
|
std::cout<<GridLogMessage << std::fixed<<std::setprecision(3)<< L<<"^4 x "<<Ls<< " Performance Robustness = "<< robust <<std::endl;
|
|
std::cout<<GridLogMessage <<fmt << std::endl;
|
|
std::cout<<GridLogMessage ;
|
|
|
|
for(int i=0;i<mflops_all.size();i++){
|
|
std::cout<<mflops_all[i]/NN<<" ; " ;
|
|
}
|
|
std::cout<<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
|
|
}
|
|
return mflops_best;
|
|
}
|
|
|
|
};
|
|
|
|
int main (int argc, char ** argv)
|
|
{
|
|
Grid_init(&argc,&argv);
|
|
|
|
CartesianCommunicator::SetCommunicatorPolicy(CartesianCommunicator::CommunicatorPolicySequential);
|
|
#ifdef KNL
|
|
LebesgueOrder::Block = std::vector<int>({8,2,2,2});
|
|
#else
|
|
LebesgueOrder::Block = std::vector<int>({2,2,2,2});
|
|
#endif
|
|
Benchmark::Decomposition();
|
|
|
|
int do_memory=1;
|
|
int do_comms =1;
|
|
int do_su3 =0;
|
|
int do_wilson=1;
|
|
int do_dwf =1;
|
|
|
|
if ( do_su3 ) {
|
|
// empty for now
|
|
}
|
|
#if 1
|
|
int sel=2;
|
|
std::vector<int> L_list({8,12,16,24});
|
|
#else
|
|
int sel=1;
|
|
std::vector<int> L_list({8,12});
|
|
#endif
|
|
int selm1=sel-1;
|
|
std::vector<double> robust_list;
|
|
|
|
std::vector<double> wilson;
|
|
std::vector<double> dwf4;
|
|
std::vector<double> dwf5;
|
|
|
|
if ( do_wilson ) {
|
|
int Ls=1;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " Wilson dslash 4D vectorised" <<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
for(int l=0;l<L_list.size();l++){
|
|
double robust;
|
|
wilson.push_back(Benchmark::DWF(1,L_list[l],robust));
|
|
}
|
|
}
|
|
|
|
int Ls=16;
|
|
if ( do_dwf ) {
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " Domain wall dslash 4D vectorised" <<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
for(int l=0;l<L_list.size();l++){
|
|
double robust;
|
|
double result = Benchmark::DWF(Ls,L_list[l],robust) ;
|
|
dwf4.push_back(result);
|
|
robust_list.push_back(robust);
|
|
}
|
|
}
|
|
|
|
if ( do_dwf ) {
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " Domain wall dslash 4D vectorised" <<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
for(int l=0;l<L_list.size();l++){
|
|
dwf5.push_back(Benchmark::DWF5(Ls,L_list[l]));
|
|
}
|
|
|
|
}
|
|
|
|
if ( do_dwf ) {
|
|
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " Summary table Ls="<<Ls <<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << "L \t\t Wilson \t DWF4 \t DWF5 " <<std::endl;
|
|
for(int l=0;l<L_list.size();l++){
|
|
std::cout<<GridLogMessage << L_list[l] <<" \t\t "<< wilson[l]<<" \t "<<dwf4[l]<<" \t "<<dwf5[l] <<std::endl;
|
|
}
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
}
|
|
|
|
int NN=NN_global;
|
|
if ( do_memory ) {
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " Memory benchmark " <<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
Benchmark::Memory();
|
|
}
|
|
|
|
if ( do_comms && (NN>1) ) {
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " Communications benchmark " <<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
Benchmark::Comms();
|
|
}
|
|
|
|
if ( do_dwf ) {
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " Per Node Summary table Ls="<<Ls <<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " L \t\t Wilson\t\t DWF4 \t\t DWF5 " <<std::endl;
|
|
for(int l=0;l<L_list.size();l++){
|
|
std::cout<<GridLogMessage << L_list[l] <<" \t\t "<< wilson[l]/NN<<" \t "<<dwf4[l]/NN<<" \t "<<dwf5[l] /NN<<std::endl;
|
|
}
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
std::cout<<GridLogMessage << " Comparison point result: " << 0.5*(dwf4[sel]+dwf4[selm1])/NN << " Mflop/s per node"<<std::endl;
|
|
std::cout<<GridLogMessage << " Comparison point is 0.5*("<<dwf4[sel]/NN<<"+"<<dwf4[selm1]/NN << ") "<<std::endl;
|
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std::cout<<std::setprecision(3);
|
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std::cout<<GridLogMessage << " Comparison point robustness: " << robust_list[sel] <<std::endl;
|
|
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
|
|
|
|
}
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|
|
|
|
Grid_finalize();
|
|
}
|