diff options
Diffstat (limited to 'src/H5Dio.c')
| -rw-r--r-- | src/H5Dio.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/H5Dio.c b/src/H5Dio.c index 470b245..a7cb937 100644 --- a/src/H5Dio.c +++ b/src/H5Dio.c @@ -830,6 +830,18 @@ H5D__ioinfo_adjust(H5D_io_info_t *io_info, const H5D_t *dset, const H5S_t *file_ } /* end if */ } /* end if */ else { + /* Fail when file sync is required, since it requires collective write */ + if (io_info->op_type == H5D_IO_OP_WRITE) { + hbool_t mpi_file_sync_required = FALSE; + if (H5F_shared_get_mpi_file_sync_required(io_info->f_sh, &mpi_file_sync_required) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get MPI file_sync_required flag") + + if (mpi_file_sync_required) + HGOTO_ERROR( + H5E_DATASET, H5E_NO_INDEPENDENT, FAIL, + "Can't perform independent write when MPI_File_sync is required by ROMIO driver.") + } + /* Check if there are any filters in the pipeline. If there are, * we cannot break to independent I/O if this is a write operation * with multiple ranks involved; otherwise, there will be metadata |