Newsgroups: comp.parallel.mpi
From: Steve Barnard <steve@megafauna.com>
Reply-To: steve@megafauna.com
Subject: Re: MPI Non blocking Sends, send buffer not readable or unclear standard?
Organization: megafauna
Date: Tue, 28 May 1996 23:19:27 -0800
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Message-ID: <31ABFA7F.4197@megafauna.com>

Eric Salo wrote:
> 
> > I can't agree with this.  Standards don't come out of the blue.  The
> > whole point of something like MPI is give users something useful and
> > something they can rely on.  If there is a gratuitous and annoying (and
> > even crippling) restriction that no implementors have even felt the need
> > to exploit, it should go.
> 
> I really need a vacation, 'cuz I just remembered an implementation of MPI
> that does depend on this restriction: ours! The culprit is host-to-host
> messages over HIPPI. The reasons are not particularly interesting (and
> may even disappear at some point), but I think that if you try to reuse
> a send buffer in this case before the send request has completed, the second
> message sent might end up with garbage data.
> 
> This is rather embarrassing...
> 
> 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?"

I'll try my best not to use your implementation.

	Steve Barnard

