Newsgroups: comp.parallel.mpi
From: sercely@convex.com (Ron Sercely)
Subject: Re: MPICH with shared memory and Tcp/IP
Organization: Convex Computer Corporation, Richardson, Tx., USA
Date: 18 Dec 1995 13:17:53 -0600
Message-ID: <4b4ep1$ndi@hydra.convex.com>

In article <4b3vt8$srh@NNTP.MsState.Edu>,
Dudley Scott Nations  <nations> wrote:
>I believe that the ch_shmem device represents an exclusive OR option,
>i.e. you can have your processes using shared memory for communication
>or TCP/IP, but not both.  Therefore you can't mix them up within a group
>of workstations.  I think that this is scheduled to be changed in the
>future.  Also, as far as I know the ch_shmem device only works for 
>SUN's and SGI's.
>
>Disclaimer:  My knowledge of this aspect of MPICH is sketchy.  You
>would be well advised to send your question to mpi-bugs@mcs.anl.gov
>and get answers from the experts.
>
>Hope this helps.
>
>Scott Nations
>

Convex Exemplar also uses the ch_shmem device

Ron Sercely


