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: Wed, 29 May 1996 08:24:22 -0800
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Message-ID: <31AC7A36.F5B@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

Eric,

BTW, I think it's a telling point that you use the term "culprit."

	Steve Barnard

