H5P_SET_DXPL_MPIO_CHUNK_OPT_RATIO
Sets a ratio threshold for collective I/O
Procedure:
H5P_SET_DXPL_MPIO_CHUNK_OPT_RATIO ( dxpl_id, percent_proc_per_chunk )
Signature:
herr_t H5Pset_dxpl_mpio_chunk_opt_ratio
(hid_t dxpl_id,
unsigned percent_proc_per_chunk)
Parameters:
hid_t dxpl_id | IN: Data transfer property list identifier |
unsigned percent_proc_per_chunk | IN: Percent threshold, on the number of processes holding selections per chunk, for performing linked-chunk I/O |
Description:
H5P_SET_DXPL_MPIO_CHUNK_OPT_RATIO sets a threshold for the use of collective I/O based on the ratio of processes with collective access to a dataset with chunked storage. The decision whether to use collective I/O is made on a per-chunk basis.
The library will calculate the percentage of the total number of processes, the ratio, that hold selections in each chunk. If that percentage is greater than the threshold set in percent_proc_per_chunk, the library will do collective I/O for this chunk; otherwise, independent I/O will be done for the chunk.
Returns:
Returns a non-negative value if successful. Otherwise returns a negative value.
Example:
Include Bitbucket Server for Confluence: An error occured
Connection to Bitbucket Server could not be established. Verify that you have properly configured the Bitbucket Server application link for your Confluence space and that your Bitbucket Server instance is up and running. Error details: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
History:
--- Last Modified: August 09, 2019 | 02:09 PM
