Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] Heap profiling with OpenMPI
From: Jan Ploski (Jan.Ploski_at_[hidden])
Date: 2008-08-07 03:54:01

users-bounces_at_[hidden] schrieb am 08/07/2008 09:27:39 AM:

> I can't speak for Jeff, but my understanding of the changes for 1.3
> should allow you to switch off the memory manager when running your
> checks.
> It seems to me an obvious interim solution would be to have two versions
> of OpenMPI installed, one with and one without the memory manager. Use
> one for debugging, and (if desired) the pinning-capable version for
> production.

This solution is good for our local cluster (where I am administrator),
but it gets complicated for other Grid clusters where OpenMPI is installed
by their respective admins from RPM and the Globus middleware has no idea
about my private installations without hacking adapters. What I wanted to
do specifically is to compare the variation in memory use of my app (WRF)
in different clusters and with different MPI implementations to validate
the prediction model I constructed in my local cluster.

Jan Ploski