mirror of
https://github.com/paboyle/Grid.git
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d1afebf71e
6000 matmuls CG unprec 2000 matmuls CG prec (4000 eo muls) 1050 matmuls PGCR on 16^3 x 32 x 8 m=.01 Substantial effort on timing and logging infrastructure
156 lines
6.3 KiB
C++
156 lines
6.3 KiB
C++
#include <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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int main (int argc, char ** argv)
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{
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Grid_init(&argc,&argv);
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const int Nvec=8;
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typedef Lattice< iVector< vReal,Nvec> > LatticeVec;
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int Nloop=1000;
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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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int threads = GridThread::GetThreads();
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std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
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std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
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std::cout<<GridLogMessage << "= Benchmarking fused AXPY bandwidth ; sizeof(Real) "<<sizeof(Real)<<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"<<std::endl;
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std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
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for(int lat=4;lat<=32;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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int 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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//GridParallelRNG pRNG(&Grid); pRNG.SeedRandomDevice();
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LatticeVec z(&Grid); //random(pRNG,z);
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LatticeVec x(&Grid); //random(pRNG,x);
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LatticeVec y(&Grid); //random(pRNG,y);
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double a=2.0;
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double start=usecond();
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for(int i=0;i<Nloop;i++){
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// inline void axpy(Lattice<vobj> &ret,double a,const Lattice<vobj> &lhs,const Lattice<vobj> &rhs){
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axpy(z,a,x,y);
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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*vol*Nvec*sizeof(Real);
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std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<" \t\t"<<bytes/time<<"\t\t"<<flops/time<<std::endl;
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}
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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"<<std::endl;
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std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
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for(int lat=4;lat<=32;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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int 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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//GridParallelRNG pRNG(&Grid); pRNG.SeedRandomDevice();
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LatticeVec z(&Grid); //random(pRNG,z);
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LatticeVec x(&Grid); //random(pRNG,x);
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LatticeVec y(&Grid); //random(pRNG,y);
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double a=2.0;
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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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}
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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*vol*Nvec*sizeof(Real);
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std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<" \t\t"<<bytes/time<<"\t\t"<<flops/time<<std::endl;
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}
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std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
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std::cout<<GridLogMessage << "= Benchmarking SCALE 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"<<std::endl;
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for(int lat=4;lat<=32;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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int 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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//GridParallelRNG pRNG(&Grid); pRNG.SeedRandomDevice();
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LatticeVec z(&Grid); //random(pRNG,z);
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LatticeVec x(&Grid); //random(pRNG,x);
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LatticeVec y(&Grid); //random(pRNG,y);
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RealD a=2.0;
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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;
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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 bytes=2*vol*Nvec*sizeof(Real);
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double flops=vol*Nvec*1;// mul
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std::cout<<GridLogMessage <<std::setprecision(3) << lat<<"\t\t"<<bytes<<" \t\t"<<bytes/time<<"\t\t"<<flops/time<<std::endl;
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}
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std::cout<<GridLogMessage << "===================================================================================================="<<std::endl;
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std::cout<<GridLogMessage << "= Benchmarking READ 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"<<std::endl;
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std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
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for(int lat=4;lat<=32;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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int 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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//GridParallelRNG pRNG(&Grid); pRNG.SeedRandomDevice();
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LatticeVec z(&Grid); //random(pRNG,z);
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LatticeVec x(&Grid); //random(pRNG,x);
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LatticeVec y(&Grid); //random(pRNG,y);
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RealD a=2.0;
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ComplexD nn;
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double start=usecond();
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for(int i=0;i<Nloop;i++){
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nn=norm2(x);
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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 bytes=vol*Nvec*sizeof(Real);
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double flops=vol*Nvec*2;// mul,add
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std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<" \t\t"<<bytes/time<<"\t\t"<<flops/time<<std::endl;
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}
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Grid_finalize();
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}
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