Re: AMBER: Making sure that Amber jobs use Infiniband?

From: David A. Case <>
Date: Fri, 1 Dec 2006 16:24:44 -0800

On Fri, Dec 01, 2006, Michael John Hanby wrote:
> I'm a system administrator responsible for installing Amber9 on several
> systems (including a Rocks cluster with Infiniband). (I'm new to Amber
> so let me know if this question should be directed elsewhere!)
> I want to make sure that any MPI Amber9 jobs use the Infiniband network
> rather than the gigabit network for communication between nodes.
> Is this handled in the compiling / configuration of OpenMPI, Mpich and
> LAM?

Yes: amber uses whatever communication pathways are used by the MPI
implementation. That is, all communication goes through the MPI layer, and
amber itself has no idea whether it is seeing infiniband, gigabit, or

...hope this helps....dac

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Received on Sun Dec 03 2006 - 06:08:01 PST
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