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use MPI_COMM_SELF when opening file to get file size in MPIIO

master
Adam Moody 2018-05-16 12:27:50 -07:00
parent 945fba2aa2
commit 43cc47b7f0
1 changed files with 8 additions and 1 deletions
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9
src/aiori-MPIIO.c
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@ -464,8 +464,15 @@ IOR_offset_t MPIIO_GetFileSize(IOR_param_t * test, MPI_Comm testComm,
{
IOR_offset_t aggFileSizeFromStat, tmpMin, tmpMax, tmpSum;
MPI_File fd;
MPI_Comm comm;
MPI_CHECK(MPI_File_open(testComm, testFileName, MPI_MODE_RDONLY,
if (test->filePerProc == TRUE) {
comm = MPI_COMM_SELF;
} else {
comm = testComm;
}
MPI_CHECK(MPI_File_open(comm, testFileName, MPI_MODE_RDONLY,
MPI_INFO_NULL, &fd),
"cannot open file to get file size");
MPI_CHECK(MPI_File_get_size(fd, (MPI_Offset *) & aggFileSizeFromStat),