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| author | Quincey Koziol <koziol@hdfgroup.org> | 2002-05-13 20:21:59 (GMT) |
|---|---|---|
| committer | Quincey Koziol <koziol@hdfgroup.org> | 2002-05-13 20:21:59 (GMT) |
| commit | c5a9d502a3e9a1ac3fdb56d946b3b466b32bad4b (patch) | |
| tree | 35044db27d80ffa8d102e224e80d47696b6ec545 /src/H5F.c | |
| parent | d07e0dd9a3d98981ba49c1a39998faf7cb522075 (diff) | |
| download | hdf5-c5a9d502a3e9a1ac3fdb56d946b3b466b32bad4b.zip hdf5-c5a9d502a3e9a1ac3fdb56d946b3b466b32bad4b.tar.gz hdf5-c5a9d502a3e9a1ac3fdb56d946b3b466b32bad4b.tar.bz2 | |
[svn-r5408] Purpose:
Performance enhancement
Description:
Doing an MPI_File_sync() just before a file is closed causing a large
performance loss.
Solution:
Add flag to MPI file driver to avoid performance the MPI_File_sync() when
the flag is set before a call to H5F_flush().
Platforms tested:
IRIX64 6.5 (modi4)
Diffstat (limited to 'src/H5F.c')
| -rw-r--r-- | src/H5F.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -2622,6 +2622,12 @@ H5F_close(H5F_t *f) H5AC_debug(f); H5F_istore_stats(f, FALSE); +#ifdef H5_HAVE_PARALLEL + if(IS_H5FD_MPIO(f)) { + if (SUCCEED!= H5FD_mpio_closing(f->shared->lf)) + HRETURN_ERROR (H5E_IO, H5E_CANTFLUSH, FAIL, "unable to set 'closing' flag"); + } /* end if */ +#endif /* H5_HAVE_PARALLEL */ /* Flush and destroy all caches */ if (H5F_flush(f, H5F_SCOPE_LOCAL, TRUE, FALSE)<0) HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush cache"); |