In an Open MPI installation, have a look in $prefix/share/openmpi/mca-
btl-openib-hca-params.ini, find your HCA hardware, and you'll see what
value Open MPI sets the MTU to.
Hope that helps.
On Jan 10, 2008, at 1:56 PM, Parag Kalra wrote:
But still can someone please tell the numerical value that is idealy
set or should be set.
On Jan 10, 2008 8:29 PM, Gleb Natapov <gl...@voltaire.com > wrote:
On Thu, Jan 10, 2008 at 06:23:50PM +0530, Parag Kalra wrote:
> Hello all,
>
> Any ideas?
Yes. The idea is that Open MPI knows what best. Run it with a default
value. Usually bigger MTU is better, but some HW has bugs. Open MPI
knows this and choses the best value for your HW.
>
> --
> Parag Kalra
>
>
> On Jan 10, 2008 4:15 AM, Parag Kalra <paragka...@gmail.com> wrote:
>
> > Hello all,
> >
> > I am using Open MPI with Infiniband configured.
> >
> > What should be the ideal MTU size for infiniband?
> >
> > --
> > PARAG . A . KALRA
> >
> >
> >
> >
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Gleb.
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PARAG . A . KALRA
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