diff options
| author | Raymond Lu <songyulu@hdfgroup.org> | 2007-06-02 18:19:36 (GMT) |
|---|---|---|
| committer | Raymond Lu <songyulu@hdfgroup.org> | 2007-06-02 18:19:36 (GMT) |
| commit | 1280f90f8128a72f1b2cfe45d3a5a24334c222e0 (patch) | |
| tree | a7969815417facfd248292e2830679fd4fbea9df /src/H5FDmpio.c | |
| parent | 2aa1084117a0040dbb6c54246837cd3133f51bdf (diff) | |
| download | hdf5-1280f90f8128a72f1b2cfe45d3a5a24334c222e0.zip hdf5-1280f90f8128a72f1b2cfe45d3a5a24334c222e0.tar.gz hdf5-1280f90f8128a72f1b2cfe45d3a5a24334c222e0.tar.bz2 | |
[svn-r13829] Some systems (only SGI Altix ProPack 4 discovered so far) doesn't return correct
file size from MPI_File_get_size. Bypass this problem by replacing it with
stat. Add an option --disable-mpi-size in configure to indicate this function
doesn't work properly. Add a test in testpar/t_mpi.c, too. If it returns wrong
file size, print out a warning.
Tested on kagiso (parallel) because already tested the same change to v1.6 on
several platforms (kagiso, cobalt, copper, and sol).
Diffstat (limited to 'src/H5FDmpio.c')
| -rw-r--r-- | src/H5FDmpio.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/H5FDmpio.c b/src/H5FDmpio.c index 6593969..5d5f092 100644 --- a/src/H5FDmpio.c +++ b/src/H5FDmpio.c @@ -942,7 +942,10 @@ H5FD_mpio_open(const char *name, unsigned flags, hid_t fapl_id, MPI_Comm comm_dup=MPI_COMM_NULL; MPI_Info info_dup=MPI_INFO_NULL; H5FD_t *ret_value; /* Return value */ - +#ifndef H5_HAVE_MPI_GET_SIZE + struct stat stat_buf; +#endif + FUNC_ENTER_NOAPI(H5FD_mpio_open, NULL) #ifdef H5FDmpio_DEBUG @@ -1016,9 +1019,18 @@ H5FD_mpio_open(const char *name, unsigned flags, hid_t fapl_id, /* Only processor p0 will get the filesize and broadcast it. */ if (mpi_rank == 0) { - /* Get current file size */ + /* Get current file size. If MPI_File_get_size is disabled in configuration + * because it doesn't return correct value (SGI Altix Propack 4), + * use stat to get the file size. */ +#ifdef H5_HAVE_MPI_GET_SIZE if (MPI_SUCCESS != (mpi_code=MPI_File_get_size(fh, &size))) HMPI_GOTO_ERROR(NULL, "MPI_File_get_size failed", mpi_code) +#else + if((mpi_code=HDstat(name, &stat_buf))<0) + HMPI_GOTO_ERROR(NULL, "stat failed", mpi_code) + /* Hopefully this casting is safe */ + size = (MPI_Offset)(stat_buf.st_size); +#endif } /* end if */ /* Broadcast file size */ |