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finer timers in Benchmark_IO

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This commit is contained in:
Antonin Portelli 2021-06-17 11:57:02 +01:00
parent 92def28bd3
commit d4290a7434
1 changed files with 13 additions and 3 deletions
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16
Grid/parallelIO/BinaryIO.h
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@ -271,7 +271,7 @@ class BinaryIO {
uint32_t &scidac_csumb)
{
grid->Barrier();
GridStopWatch timer;
GridStopWatch timer, insideTimer;
GridStopWatch bstimer;
nersc_csum=0;
@ -363,7 +363,10 @@ class BinaryIO {
std::cout<< GridLogMessage<<"IOobject: MPI read I/O "<< file<< std::endl;
ierr=MPI_File_open(grid->communicator,(char *) file.c_str(), MPI_MODE_RDONLY, MPI_INFO_NULL, &fh); assert(ierr==0);
ierr=MPI_File_set_view(fh, disp, mpiObject, fileArray, "native", MPI_INFO_NULL); assert(ierr==0);
ierr=MPI_File_read_all(fh, &iodata[0], 1, localArray, &status); assert(ierr==0);
insideTimer.Start();
ierr=MPI_File_read_all(fh, &iodata[0], 1, localArray, &status);
insideTimer.Stop();
assert(ierr==0);
MPI_File_close(&fh);
MPI_Type_free(&fileArray);
MPI_Type_free(&localArray);
@ -438,7 +441,9 @@ class BinaryIO {
assert(ierr == 0);
std::cout << GridLogDebug << "MPI write I/O write all " << file << std::endl;
insideTimer.Start();
ierr = MPI_File_write_all(fh, &iodata[0], 1, localArray, &status);
insideTimer.Stop();
assert(ierr == 0);
MPI_Offset os;
@ -516,8 +521,13 @@ class BinaryIO {
if ( control & BINARYIO_READ) std::cout << " read ";
else std::cout << " write ";
uint64_t bytes = sizeof(fobj)*iodata.size()*nrank;
std::cout<< lastPerf.size <<" bytes in "<< timer.Elapsed() <<" "
std::cout<< lastPerf.size <<"bytes in "<< timer.Elapsed() <<" "
<< lastPerf.mbytesPerSecond <<" MB/s "<<std::endl;
std::cout << GridLogMessage << "IOobject: pure MPI IO call "
<< lastPerf.size <<" bytes in "
<< insideTimer.Elapsed() << " "
<< lastPerf.size/1024./1024./(insideTimer.useconds()/1.0e6)
<<" MB/s "<<std::endl;
std::cout<<GridLogMessage<<"IOobject: endian and checksum overhead "<<bstimer.Elapsed() <<std::endl;