Open MPI User's Mailing List Archives

Subject: Re: [OMPI users] Mellanox/Voltaire FCA support
From: Andrew Senin (andrew.senin_at_[hidden])
Date: 2011-09-04 11:41:38

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• In reply to: Konz, Jeffrey (SSA Solution Centers): "[OMPI users] Mellanox/Voltaire FCA support"

Hi Jeff,

You should compile OpenMPI with the "--with-fca=<path_to_fca>" option. Then
you can configure it the the following mca runtime options:
coll_fca_enable - whether or not fca is enabled
coll_fca_np - from which np to use fca
coll_fca_enable_barrier
coll_fca_enable_bcast
...

See more options with ompi_info --all | grep fca command.

Regards,
Andrew Senin.

On Fri, Sep 2, 2011 at 10:18 PM, Konz, Jeffrey (SSA Solution Centers) <
jeffrey.konz_at_[hidden]> wrote:

>
> I see that OpenMPI 1.5.x supports the Mellanox/Voltaire FCA MPI Collective
> Accelerator.
>
> Are any special OpenMPI builb options required to use this?
> Is the feature runtime selectable?
>
> Thanks,
>
> -Jeff
>
>
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