portelli/Grid
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Better timing tweaks to give sensible results on 24 threads on Edison dual ivybridge nodes.

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paboyle
2015-09-28 16:09:04 -07:00
parent 9f4f65cb46
commit af89c40462
2 changed files with 59 additions and 37 deletions
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14
benchmarks/Benchmark_memory_asynch.cc
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@ -25,9 +25,10 @@ int main (int argc, char ** argv)
std::cout<<GridLogMessage << " L "<<"\t\t"<<"bytes"<<"\t\t"<<"bytes/thread"<<"\t\t\t"<<"GB/s"<<"\t\t\t"<<"GB/s per thread"<<std::endl;
std::cout<<GridLogMessage << "----------------------------------------------------------"<<std::endl;
for(int lat=4;lat<=16536;lat*=2){
const int lmax = 16536*16;
for(int lat=4;lat<=lmax;lat*=2){
int Nloop=16536*1024*4/lat;
int Nloop=lmax*128*4/lat;
std::vector<int> latt_size ({2*mpi_layout[0],2*mpi_layout[1],4*mpi_layout[2],lat*mpi_layout[3]});
@ -37,11 +38,15 @@ int main (int argc, char ** argv)
Vec tsum; tsum = zero;
GridParallelRNG pRNG(&Grid); pRNG.SeedRandomDevice();
std::vector<double> stop(threads);
Vector<Vec> sum(threads);
std::vector<LatticeVec> x(threads,&Grid);
for(int t=0;t<threads;t++){
random(pRNG,x[t]);
}
double start=usecond();
PARALLEL_FOR_LOOP
@ -64,6 +69,9 @@ PARALLEL_FOR_LOOP
if ( stop[t]<min_stop ) min_stop=stop[t];
if ( stop[t]>max_stop ) max_stop=stop[t];
}
double max_time = (max_stop-start)/Nloop*1000;
double min_time = (min_stop-start)/Nloop*1000;