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Subject: Re: [OMPI users] Specifying GPU on mpi
From: Andreas Schäfer (gentryx_at_[hidden])
Date: 2011-12-12 15:49:40


Hi Erin,

uhm, I don't think this is related to MPI as MPI is completely
orthogonal to GPU programming. MPI doesn't even know about GPUs. Just
select the GPU like you weren't using MPI at all.

HTH
-Andreas

On 14:44 Mon 12 Dec , Erin Rasmussen wrote:
>
> I have multiple GPUs on a node in my cluster and am trying to run some
> benchmarks on the system. However, since my department is in research
> and has a job system set up, I can only take one GPU offline to test
> until I are sure I know what I are doing. My problem is trying to set up
> the mpirun command to specify a single GPU. I understand how to use
> mpirun to run programs on specific processors on different nodes, but
> the GPUs show up as devices and not processors. How do I set up my
> mpirun command to use a specific GPU, or is that even possible?
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users

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Andreas Schäfer
HPC and Grid Computing
Chair of Computer Science 3
Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
+49 9131 85-27910
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