[Mpi-comments] "safe" tag in MPI_Intercomm_create

William Gropp wgropp at illinois.edu
Thu Sep 6 17:02:24 CDT 2012

I noted in ticket #305 that the argument is now ignored and retained only for backward compatibility. Deleting "safe" isn't enough.


William Gropp
Director, Parallel Computing Institute
Deputy Director for Research
Institute for Advanced Computing Applications and Technologies
Paul and Cynthia Saylor Professor of Computer Science
University of Illinois Urbana-Champaign

On Sep 6, 2012, at 1:47 PM, Jim Dinan wrote:

> Hi All,
> It looks like we forgot to include the removal of the "safe" qualifier from the tag argument as a part of the change to MPI_Intercomm_create:
> https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/305
> Specifying that the tag argument must be "safe" was made unnecessary by this change, since it eliminates the possibility of interference with user communication.
> ~Jim.
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