Newsgroups: comp.parallel.mpi
From: lfm@pgroup.com (Larry Meadows)
Subject: Re: MPI on Shared Memory Systems
Organization: The Portland Group, Inc.
Date: 30 Apr 1996 07:37:13 -0700
Message-ID: <4m58ip$qc2@pacific.pgroup.com>

salo@mrjones.engr.sgi.com (Eric Salo) writes:

>> 	I am trying to implement and MPI program on the SGI power challenge
>> array. What I would like to do is to have some variables common to all
>> the processes. I dont want to explicitly pass messages as these variable are
>> frequently updated. I would like to have them as shared memory locations
>> accessible to all the processors. Is this possible using MPI? If so, how?

>However, ignoring all that, the answer is yes, it should be possible. All
>you need to do is set up a shared arena and voila, off you go. Check the
>man pages on usinit() and usconfig() for the dirty details on arenas.

Hmm, he said 'Array'. Do the shared memory areas work across PCXL boxes?

Also, you might want to mention something about synchronization.

I'd suggest that he use HPF. :).

lfm


