Newsgroups: comp.parallel.mpi
From: salo@mrjones.engr.sgi.com (Eric Salo)
Subject: Re: MPI_Barrier and Collective Communications
Organization: Silicon Graphics, Inc.  Mountain View, CA
Date: 25 Feb 1996 00:25:32 GMT
Message-ID: <4goa9s$pd1@murrow.corp.sgi.com>

> I suppose this means that all the processes in a group are syncronized by
> the collective call itself

Incorrect. MPI_Barrier() is the only collective call about which any
synchronization assumptions may be safely made. All other collective
calls may or may not synchronize, depending on the implementation.

Eric Salo         Silicon Graphics Inc.             "Do you know what the
(415)933-2998     2011 N. Shoreline Blvd, 7L-802     last Xon said, just
salo@sgi.com      Mountain View, CA   94043-1389     before he died?"

