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[svn-r25750] use MPI_File_get_size() instead of stat when retrieving the file size for the MPIO driver.

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This commit is contained in:
Mohamad Chaarawi 2014-10-28 11:59:36 -05:00
parent 73465a6bc2
commit 6735f59f7d
1 changed files with 17 additions and 4 deletions
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21
test/h5test.c
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@ -908,7 +908,7 @@ h5_get_file_size(const char *filename, hid_t fapl)
{
char temp[2048]; /* Temporary buffer for file names */
h5_stat_t sb; /* Structure for querying file info */
int j = 0;
int j = 0;
if(fapl == H5P_DEFAULT) {
/* Get the file's statistics */
@ -924,9 +924,6 @@ h5_get_file_size(const char *filename, hid_t fapl)
/* Check for simple cases */
if(driver == H5FD_SEC2 || driver == H5FD_STDIO || driver == H5FD_CORE ||
#ifdef H5_HAVE_PARALLEL
driver == H5FD_MPIO ||
#endif /* H5_HAVE_PARALLEL */
#ifdef H5_HAVE_WINDOWS
driver == H5FD_WINDOWS ||
#endif /* H5_HAVE_WINDOWS */
@ -961,6 +958,22 @@ h5_get_file_size(const char *filename, hid_t fapl)
/* Return total size */
return(tot_size);
} /* end if */
#ifdef H5_HAVE_PARALLEL
else if(driver == H5FD_MPIO) {
MPI_File fh; /* MPI file handle used to open the file and verify its size */
int mpi_ret;
MPI_Offset file_size;
mpi_ret = MPI_File_open(MPI_COMM_WORLD, filename, MPI_MODE_RDONLY, MPI_INFO_NULL, &fh);
if (mpi_ret != MPI_SUCCESS) return -1;
mpi_ret = MPI_File_get_size(fh, &file_size);
if (mpi_ret != MPI_SUCCESS) return -1;
mpi_ret = MPI_File_close(&fh);
if (mpi_ret != MPI_SUCCESS) return -1;
return file_size;
}
#endif /* H5_HAVE_PARALLEL */
else if(driver == H5FD_FAMILY) {
h5_stat_size_t tot_size = 0;