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Subject: Re: [OMPI devel] Heads up on new feature to 1.3.4
From: Ralph Castain (rhc_at_[hidden])
Date: 2009-08-16 09:41:59

Hi Chris

There would be a "-do-not-bind" option that will prevent us from binding
processes to anything which should cover that situation.

My point was only that we would be changing the out-of-the-box behavior to
the opposite of today's, so all those such as yourself would now have to add
the -do-not-bind MCA param to your default MCA param file.

Doable - but it -is- a significant change in our out-of-the-box behavior.

On Sun, Aug 16, 2009 at 2:14 AM, Chris Samuel <csamuel_at_[hidden]> wrote:

> ----- "Terry Dontje" <Terry.Dontje_at_[hidden]> wrote:
> > I just wanted to give everyone a heads up if they do not get bugs
> > email. I just submitted a CMR to move over some new paffinity options
> > from the trunk to the v1.3 branch.
> Ralphs comments imply that for those sites that share nodes
> between jobs (such as ourselves, and most other sites that
> I'm aware of in Australia) these changes will severely impact
> performance.
> I think that would be a Very Bad Thing(tm).
> Can it be something that defaults to being configured out
> for at least 1.3 please ? That way those few sites that
> can take advantage can enable it whilst the rest of us
> aren't impacted.
> cheers,
> Chris
> --
> Christopher Samuel - (03) 9925 4751 - Systems Manager
> The Victorian Partnership for Advanced Computing
> P.O. Box 201, Carlton South, VIC 3053, Australia
> VPAC is a not-for-profit Registered Research Agency
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