Newsgroups: comp.parallel.mpi
From: Oliver Langer <ola>
Subject: Re: MPICH with shared memory and Tcp/IP
Organization: University of Technology Chemnitz, FRG
Date: 21 Dec 1995 01:16:06 GMT
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Message-ID: <4bacgm$d5a@pyrrhus-f.hrz.tu-chemnitz.de>

Hi !

In article 4auhg9$j6q@wonder.itc.it Roldano Cattoni wrote:
> I compiled it with the ch_p4 device without local shared memory:
> I would like to improve performance using shared memory communication when
> possible.

Try the following:

Configure MPI using comm=shared.
Then, before running make, switch to the p4-directory (usually mpid/ch_p4/p4-1.4) and configure
P4 with sysv_ipc=on.
Now make your MPI.

Hope this helps,
Oliver.


