H5Pset_hyper_vector_size(hid_t dxpl_id,
size_t vector_size
)
H5Pset_hyper_vector_size sets the number of
I/O vectors to be accumulated in memory before being issued
to the lower levels of the HDF5 library for reading or writing the
actual data.
The I/O vectors are hyperslab offset and length pairs and are generated during hyperslab I/O.
The number of I/O vectors is passed in vector_size
to be set in the dataset transfer property list dxpl_id.
vector_size must be greater than 1 (one).
H5Pset_hyper_vector_size is an I/O optimization function;
increasing vector_size should provide better performance,
but the library will use more memory during hyperslab I/O.
The default value of vector_size is 1024.
hid_t dxpl_id |
IN: Dataset transfer property list identifier. |
size_t vector_size |
IN: Number of I/O vectors to accumulate in memory for I/O operations.
Must be greater than 1 (one). Default value: 1024. |
SUBROUTINE h5pset_hyper_vector_size_f(plist_id, size, hdferr)
IMPLICIT NONE
INTEGER(HID_T), INTENT(IN) :: plist_id ! Dataset transfer property list
! identifier
INTEGER(SIZE_T), INTENT(IN) :: size ! Vector size
INTEGER, INTENT(OUT) :: hdferr ! Error code
! 0 on success and -1 on failure
END SUBROUTINE h5pset_hyper_vector_size_f
| Release | C |
| 1.6.0 | Function introduced in this release. |