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From: Jeff Squyres \(jsquyres\) (jsquyres_at_[hidden])
Date: 2006-05-09 07:23:34

If you are looking for the path of least resistance, then going back to
MPICH is probably your best bet (there is certainly merit in "it ain't
broke, so don't fix it").

However, there may be a few other factors to consider:

- Just because an app runs and completes with one MPI implementation
does not mean that the application is correct; running with a different
implementation can be a great way to find bugs that you were unaware of

- Open MPI is under continual development. The latest officially
released stable version of Open MPI is v1.0.2. There are also
post-1.0.2 snapshots (what will eventually become 1.0.3).

Hope this helps.

> -----Original Message-----
> From: users-bounces_at_[hidden]
> [mailto:users-bounces_at_[hidden]] On Behalf Of Richard Wait
> Sent: Tuesday, May 09, 2006 7:14 AM
> To: users_at_[hidden]
> Subject: [OMPI users] Open MPI and MPICH
> Hi
> I have been using mpich (v1.2.6) for some time but I have
> just installed fedora
> 5 which comes with Open MPI v1.0.1. Using a program that
> worked with mpich, the
> code compiles with om-mpif77 but using om-mpirun the program
> aborts with the
> message:
> 2 additional processes aborted (not shown)
> 1 process killed (possibly by Open MPI)
> before it inputs data from a file.
> I am using ssh to launch the processes. Can anybody explain
> why I should not go
> back to mpich
> Richard Wait
> Uppsala University
> Department of Information Technology
> Scientific Computing
> Box 337
> 75105 UPPSALA
> Tel: 018-4712757
> Fax: 018-523049
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