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Subject: Re: [OMPI users] (OpenMPI for Cray XE6 ) How to set mca parameters through aprun?
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-11-23 17:27:02

My guess is that you aren't doing the allocation correctly - since you are using qsub, can I assume you have Moab as your scheduler?

aprun should be forwarding the envars - do you see them if you just run "aprun -n 1 printenv"?

On Nov 23, 2013, at 2:13 PM, Teranishi, Keita <knteran_at_[hidden]> wrote:

> Hi,
> I installed OpenMPI on our small XE6 using the configure options under /contrib directory. It appears it is working fine, but it ignores MCA parameters (set in env var). So I switched to mpirun (in OpenMPI) and it can handle MCA parameters somehow. However, mpirun fails to allocate process by cores. For example, I allocated 32 cores (on 2 nodes) by "qsub –lmppwidth=32 –lmppnppn=16", mpirun recognizes it as 2 slots. Is it possible to mpirun to handle mluticore nodes of XE6 properly or is there any options to handle MCA parameters for aprun?
> Regards,
> -----------------------------------------------------------------------------
> Keita Teranishi
> Principal Member of Technical Staff
> Scalable Modeling and Analysis Systems
> Sandia National Laboratories
> Livermore, CA 94551
> +1 (925) 294-3738
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