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Subject: Re: [OMPI devel] RFC: Remove heterogeneous support
From: Andreas Schäfer (gentryx_at_[hidden])
Date: 2014-04-24 15:05:34


On 14:49 Thu 24 Apr , George Bosilca wrote:
> On Thu, Apr 24, 2014 at 1:06 PM, Jeff Squyres (jsquyres)
> <jsquyres_at_[hidden]> wrote:
> > The code is unused. It has been unused for a long time. It is
> unlikely to be fixed.

We'd be using it, probably not in production, but in research and
teaching -- if it was operational.

And, as George pointed out, I see a trend towards heterogeneity in
HPC, to I'd say this feature will be rather more important in the

> PS: This code has implications from the datatype engine till up in the
> MPI layer. It also impacts the BTL, especially the hand-shake for the
> one requiring such a protocol. It also has an impact on the external32
> support in MPI, for some types of architectures. So it's removal
> should be an extremely cautious and chirurgical operation.

So, would repairing the code be significantly more complicated than a
clean extraction?


Andreas Schäfer
HPC and Grid Computing
Chair of Computer Science 3
Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
+49 9131 85-27910
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