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SU4 x SU4

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This commit is contained in:
Peter Boyle
2020-10-06 21:48:35 -04:00
parent ace9cd64bb
commit 35a69a5133
1 changed files with 73 additions and 5 deletions
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78
benchmarks/Benchmark_ITT.cc
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@@ -202,6 +202,8 @@ public:
return;
}
static void Memory(void)
{
const int Nvec=8;
@@ -266,6 +268,66 @@ public:
};
static void SU4(void)
{
const int Nc4=4;
typedef Lattice< iMatrix< vComplexF,Nc4> > LatticeSU4;
Coordinate simd_layout = GridDefaultSimd(Nd,vComplexF::Nsimd());
Coordinate mpi_layout = GridDefaultMpi();
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
std::cout<<GridLogMessage << "= Benchmarking z = y*x SU(4) bandwidth"<<std::endl;
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
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;
std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
uint64_t NN;
uint64_t lmax=32;
#define NLOOP (100*lmax*lmax*lmax*lmax/lat/lat/lat/lat)
GridSerialRNG sRNG; sRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
for(int lat=8;lat<=lmax;lat+=8){
Coordinate latt_size ({lat*mpi_layout[0],lat*mpi_layout[1],lat*mpi_layout[2],lat*mpi_layout[3]});
int64_t vol= latt_size[0]*latt_size[1]*latt_size[2]*latt_size[3];
GridCartesian Grid(latt_size,simd_layout,mpi_layout);
NN =Grid.NodeCount();
LatticeSU4 z(&Grid); z=Zero();
LatticeSU4 x(&Grid); x=Zero();
LatticeSU4 y(&Grid); y=Zero();
double a=2.0;
uint64_t Nloop=NLOOP;
double start=usecond();
for(int i=0;i<Nloop;i++){
z=x*y;
autoView( x_v , x, CpuWrite);
autoView( y_v , y, CpuWrite);
autoView( z_v , z, CpuRead);
x_v[0]=z_v[0]; // force serial dependency to prevent optimise away
y_v[4]=z_v[4];
}
double stop=usecond();
double time = (stop-start)/Nloop*1000;
double flops=vol*Nc4*Nc4*(6+(Nc4-1)*8);// mul,add
double bytes=3.0*vol*Nc4*Nc4*2*sizeof(RealF);
std::cout<<GridLogMessage<<std::setprecision(3)
<< lat<<"\t\t"<<bytes<<" \t\t"<<bytes/time<<"\t\t"<<flops/time<<"\t\t"<<(stop-start)/1000./1000.
<< "\t\t"<< bytes/time/NN <<std::endl;
}
};
static double DWF(int Ls,int L)
{
RealD mass=0.1;
@@ -596,11 +658,12 @@ int main (int argc, char ** argv)
#endif
Benchmark::Decomposition();
int do_su4=1;
int do_memory=1;
int do_comms =1;
int sel=2;
std::vector<int> L_list({16,24,32});
int sel=4;
std::vector<int> L_list({8,12,16,24,32});
int selm1=sel-1;
std::vector<double> wilson;
@@ -624,7 +687,6 @@ int main (int argc, char ** argv)
dwf4.push_back(result);
}
/*
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
std::cout<<GridLogMessage << " Improved Staggered dslash 4D vectorised" <<std::endl;
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
@@ -632,14 +694,13 @@ int main (int argc, char ** argv)
double result = Benchmark::Staggered(L_list[l]) ;
staggered.push_back(result);
}
*/
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\t DWF4 \t\tt Staggered" <<std::endl;
for(int l=0;l<L_list.size();l++){
std::cout<<GridLogMessage << L_list[l] <<" \t\t "<< wilson[l]<<" \t\t "<<dwf4[l] <<std::endl;
std::cout<<GridLogMessage << L_list[l] <<" \t\t "<< wilson[l]<<" \t\t "<<dwf4[l] << " \t\t "<< staggered[l]<<std::endl;
}
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
@@ -651,6 +712,13 @@ int main (int argc, char ** argv)
Benchmark::Memory();
}
if ( do_su4 ) {
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
std::cout<<GridLogMessage << " Memory benchmark " <<std::endl;
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
Benchmark::SU4();
}
if ( do_comms && (NN>1) ) {
std::cout<<GridLogMessage << "=================================================================================="<<std::endl;
std::cout<<GridLogMessage << " Communications benchmark " <<std::endl;