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Subject: Re: [OMPI users] Scatter+Group Communicator Issue
From: Jeffrey Squyres (jsquyres_at_[hidden])
Date: 2012-03-09 11:59:50

On Mar 6, 2012, at 10:17 AM, nadia.derbey_at_[hidden] wrote:

> Since MPI_Comm_create sets the created communicator to MPI_COMM_NULL for the processes that are not in the group , may be preceding your collectives by a:
> if (MPI_COMM_NULL != new_comm) {
> <your collective>
> }
> could be enough.
> But may be I'm wrong...

You're not. :-)

Jeff Squyres
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