Newsgroups: comp.parallel.mpi
From: Michael Pernice <usimap>
Subject: Re: MPI_PROC_NULL and invalid message tags
Organization: Utah Supercomputing Institute
Date: 8 Mar 1996 14:40:17 GMT
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Message-ID: <4hpgsh$h8b@news.cc.utah.edu>

lederman@reggiano.cs.wisc.edu (Steve Huss-Lederman) wrote:
>
>My recollection of the discussion during the MPI Forum is that we
>never addressed this issue directly.  My reading of the standard would
>be that you can choose to generate an error or not.  If people think
>this is a bad choice, we could discuss it as an MPI-1 clarification in
>the current MPI Forum discussions.  Do people think we should clarify
>to allow only one type of behavior?
>
>Steve

A program using MPI would not be portable if communication to MPI_PROC_NULL
produced an error in some implementations and not in others.  IMO this issue
must be clarified to achieve the objective of providing a portable standard for
message-passing.
-- 
_______________________________________________________________________________

Michael Pernice                                  Utah Supercomputing Institute 
Phone:  (801) 581-7708                           85 Student Services Building  
Fax:  (801) 585-5366                             University of Utah
Internet:  usimap@sneffels.usi.utah.edu          Salt Lake City, Utah 84112
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