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Subject: Re: [OMPI users] selectively bind MPI to one HCA out of available ones
From: Ralph Castain (rhc_at_[hidden])
Date: 2009-07-15 09:20:52


Take a look at the output from "ompi_info --params btl openib" and you will
see the available MCA params to direct the openib subsystem. I believe you
will find that you can indeed specify the interface.

On Wed, Jul 15, 2009 at 7:15 AM, <neeraj_at_[hidden]> wrote:

>
> Hi all,
>
> I have a cluster where both HCA's of blade are active, but
> connected to different subnet.
> Is there an option in MPI to select one HCA out of available one's?
> I know it can be done by making changes in openmpi code, but i need clean
> interface like option during mpi launch time to select mthca0 or mthca1?
>
> Any help is appreciated. Btw i just checked Mvapich and feature is
> there inside.
>
> Regards
>
> Neeraj Chourasia (MTS)
> Computational Research Laboratories Ltd.
> (A wholly Owned Subsidiary of TATA SONS Ltd)
> B-101, ICC Trade Towers, Senapati Bapat Road
> Pune 411016 (Mah) INDIA
> (O) +91-20-6620 9863 (Fax) +91-20-6620 9862
> M: +91.9225520634
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