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Subject: Re: [OMPI users] [EXTERNAL] RDMA question
From: Barrett, Brian W (bwbarre_at_[hidden])
Date: 2013-10-28 11:36:41

On 10/28/13 5:22 AM, "Luis Kornblueh" <luis.kornblueh_at_[hidden]> wrote:

>My question would be to all openmpi power users and developers, what
>would be required to get this properly running.
>In case it is required to give more information, please come back to me.
>Maybe the explanation what we do is insufficient.

Open MPI 1.6 (and 1.7) has a very basic, non-RDMA based one-sided
implementation. If you're using InfiniBand and your gets are contiguous,
you can try adding "-mca osc_rdma_use_rdma 1" to the mpirun command line.


  Brian W. Barrett
  Scalable System Software Group
  Sandia National Laboratories