This was the motivation, more than avoiding declaring a variable that was never read in the user’s program. There was evidence for this from Intel in the early ‘90s, though I don’t know if anyone has looked into it recently. Bill William Gropp Director, Parallel Computing Institute Thomas M. Siebel Chair in Computer Science Chief Scientist, NCSA University of Illinois Urbana-Champaign On May 26, 2016, at 6:30 PM, Jeff Hammond <[email protected]> wrote:
Is it correct to assume that it is cheaper to check for MPI_STATUS_IGNORE and MPI_STATUSES_IGNORE than to fill in the status object, in the case where the user does not need the status?
Thanks,
Jeff
-- Jeff Hammond [email protected] http://jeffhammond.github.io/ _______________________________________________ To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/devel