portelli/Grid
1
0
Fork 0
mirror of https://github.com/paboyle/Grid.git synced 2024-11-10 07:55:35 +00:00
Code Releases Activity

I/O benchmark

Browse Source
This commit is contained in:
Antonin Portelli 2018-03-29 19:57:41 +01:00
parent f290b2e908
commit c5a885dcd6
1 changed files with 101 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
benchmarks/Benchmark_IO.cc Normal file
View File

@ -0,0 +1,101 @@
#include <Grid/Grid.h>
using namespace std;
using namespace Grid;
using namespace Grid::QCD;
#define MSG cout << GridLogMessage
#define SEP \
"============================================================================="
#ifndef BENCH_IO_LMAX
#define BENCH_IO_LMAX 40
#endif
typedef function<void(const string, LatticeFermion &)> WriterFn;
typedef function<void(LatticeFermion &, const string)> ReaderFn;
string filestem(const int l)
{
return "iobench_l" + to_string(l);
}
void limeWrite(const string filestem, LatticeFermion &vec)
{
emptyUserRecord record;
ScidacWriter binWriter;
binWriter.open(filestem + ".bin");
binWriter.writeScidacFieldRecord(vec, record);
binWriter.close();
}
void limeRead(LatticeFermion &vec, const string filestem)
{
emptyUserRecord record;
ScidacReader binReader;
binReader.open(filestem + ".bin");
binReader.readScidacFieldRecord(vec, record);
binReader.close();
}
void writeBenchmark(const int l, const WriterFn &write)
{
auto mpi = GridDefaultMpi();
auto simd = GridDefaultSimd(Nd, vComplex::Nsimd());
vector<int> latt = {l*mpi[0], l*mpi[1], l*mpi[2], l*mpi[3]};
unique_ptr<GridCartesian> gPt(SpaceTimeGrid::makeFourDimGrid(latt, simd, mpi));
GridCartesian *g = gPt.get();
GridParallelRNG rng(g);
LatticeFermion vec(g);
emptyUserRecord record;
ScidacWriter binWriter;
cout << "-- Local volume " << l << "^4" << endl;
random(rng, vec);
write(filestem(l), vec);
}
void readBenchmark(const int l, const ReaderFn &read)
{
auto mpi = GridDefaultMpi();
auto simd = GridDefaultSimd(Nd, vComplex::Nsimd());
vector<int> latt = {l*mpi[0], l*mpi[1], l*mpi[2], l*mpi[3]};
unique_ptr<GridCartesian> gPt(SpaceTimeGrid::makeFourDimGrid(latt, simd, mpi));
GridCartesian *g = gPt.get();
LatticeFermion vec(g);
emptyUserRecord record;
ScidacReader binReader;
cout << "-- Local volume " << l << "^4" << endl;
read(vec, filestem(l));
}
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
auto simd = GridDefaultSimd(Nd,vComplex::Nsimd());
auto mpi = GridDefaultMpi();
int64_t threads = GridThread::GetThreads();
MSG << "Grid is setup to use " << threads << " threads" << endl;
MSG << SEP << endl;
MSG << "Benchmark Lime write" << endl;
MSG << SEP << endl;
for (int l = 4; l <= BENCH_IO_LMAX; l += 2)
{
writeBenchmark(l, limeWrite);
}
MSG << "Benchmark Lime read" << endl;
MSG << SEP << endl;
for (int l = 4; l <= BENCH_IO_LMAX; l += 2)
{
readBenchmark(l, limeRead);
}
Grid_finalize();
return EXIT_SUCCESS;
}