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GPU tweaks for benchmarking; really necessary?

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paboyle
2018-06-13 20:26:07 +01:00
parent 94d1ae4c82
commit 25becc9324
3 changed files with 23 additions and 31 deletions
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16
benchmarks/Benchmark_su3.cc
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@@ -1,4 +1,4 @@
/*************************************************************************************
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
@@ -31,16 +31,17 @@ Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
using namespace std;
using namespace Grid;
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
#define LMAX (32)
#define LMIN (4)
#define LADD (4)
#define LMAX (48)
#define LMIN (8)
#define LADD (8)
int64_t Nwarm=5;
int64_t Nloop=25;
int64_t Nwarm=50;
int64_t Nloop=500;
Coordinate simd_layout = GridDefaultSimd(Nd,vComplex::Nsimd());
Coordinate mpi_layout = GridDefaultMpi();
@@ -141,6 +142,7 @@ int main (int argc, char ** argv)
double start=usecond();
for(int64_t i=0;i<Nloop;i++){
mult(z,x,y);
// mac(z,x,y);
}
double stop=usecond();
double time = (stop-start)/Nloop*1000.0;
@@ -179,7 +181,7 @@ int main (int argc, char ** argv)
double stop=usecond();
double time = (stop-start)/Nloop*1000.0;
double bytes=3*vol*Nc*Nc*sizeof(Complex);
double bytes=4*vol*Nc*Nc*sizeof(Complex);
double flops=Nc*Nc*(8+8+8)*vol;
std::cout<<GridLogMessage<<std::setprecision(3) << lat<<"\t\t"<<bytes<<" \t\t"<<bytes/time<<"\t\t" << flops/time<<std::endl;