herr_t H5Pset_coll_metadata_write( hid_t fapl_id, hbool_t is_collective )
H5Pset_coll_metadata_writetells the HDF5 Library whether to perform metadata writes collectively (
TRUE) or independently (
If collective access is selected, then on a flush of the metadata cache, all processes will divide the metadata cache entries to be flushed evenly among themselves and issue a single MPI-IO collective write operation. This is the preferred method when the size of the metadata created by the application is large.
If independent access is selected, the library uses the default method for doing metadata I/O either from process zero or independently from each process.
||IN: File access propery list identifier|
||IN: Boolean value indicating whether
metadata writes are collective (
Default mode: Independent (
SUBROUTINE h5pset_coll_metadata_write_f(plist_id, is_collective, hdferr) INTEGER(HID_T) , INTENT(IN) :: plist_id LOGICAL, INTENT(IN) :: is_collective INTEGER, INTENT(OUT) :: hdferrInputs:
fapl_id - File access property list identifier. is_collective - Indicates if metadata writes are collective or not.Outputs:
hdferr - Returns 0 if successful and -1 if fails.
|1.10.0||C function and Fortran wrapper introduced with this release.|