diff options
| author | Jordan Henderson <jhenderson@hdfgroup.org> | 2023-10-03 19:39:01 (GMT) |
|---|---|---|
| committer | Jordan Henderson <jhenderson@hdfgroup.org> | 2023-10-03 19:39:01 (GMT) |
| commit | db8b00865fdb76ce076d2032a0b27c5b012e9afc (patch) | |
| tree | 3ffb877096fe9dec084f9d0d6a43e9a416460f35 /src/H5FDmpio.h | |
| parent | 3f0b8817a166bac02ee6155544b950d9c4cdfbc3 (diff) | |
| parent | cb6de06dcc18b31ab3f1d53bd93f0bbfaa0a17e1 (diff) | |
| download | hdf5-db8b00865fdb76ce076d2032a0b27c5b012e9afc.zip hdf5-db8b00865fdb76ce076d2032a0b27c5b012e9afc.tar.gz hdf5-db8b00865fdb76ce076d2032a0b27c5b012e9afc.tar.bz2 | |
Merge branch 'develop' into feature/vol_tools_tests
Diffstat (limited to 'src/H5FDmpio.h')
| -rw-r--r-- | src/H5FDmpio.h | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/src/H5FDmpio.h b/src/H5FDmpio.h index 3678601..96a9366 100644 --- a/src/H5FDmpio.h +++ b/src/H5FDmpio.h @@ -164,18 +164,24 @@ H5_DLL herr_t H5Pget_dxpl_mpio(hid_t dxpl_id, H5FD_mpio_xfer_t *xfer_mode /*out* /** * \ingroup DXPL * - * \brief Sets data transfer mode + * \brief Sets low-level data transfer mode * * \dxpl_id * \param[in] opt_mode Transfer mode * \returns \herr_t * - * \details H5Pset_dxpl_mpio() sets the data transfer property list \p dxpl_id - * to use transfer mode xfer_mode. The property list can then be used - * to control the I/O transfer mode during data I/O operations. - * - * Valid transfer modes are #H5FD_MPIO_INDEPENDENT (default) and - * #H5FD_MPIO_COLLECTIVE. + * \details H5Pset_dxpl_mpio_collective_opt() sets the data transfer property + * list \p dxpl_id to use transfer mode \p opt_mode when performing + * I/O. This allows the application to specify collective I/O at the + * HDF5 interface level (with the H5Pset_dxpl_mpio() API routine), + * while controlling whether the actual I/O is performed collectively + * (e.g., via MPI_File_write_at_all) or independently (e.g., via + * MPI_File_write_at). If the collectivity setting at the HDF5 + * interface level (set via H5Pset_dxpl_mpio()) is not set to + * H5FD_MPIO_COLLECTIVE, this setting will be ignored. + * + * Valid transfer modes are #H5FD_MPIO_COLLECTIVE_IO (default) and + * #H5FD_MPIO_INDIVIDUAL_IO. * * \since 1.4.0 * |