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Subject: Re: [OMPI devel] RFC: Add support to send/receive CUDA device memory directly
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2011-04-14 14:34:28


On Apr 14, 2011, at 12:41 PM, Brice Goglin wrote:

> hwloc (since 1.1, on Linux) can already tell you which CPUs are close to a CUDA device, see https://svn.open-mpi.org/trac/hwloc/browser/trunk/include/hwloc/cuda.h and https://svn.open-mpi.org/trac/hwloc/browser/trunk/include/hwloc/cudart.h
> Do you need anything else ?

Nope.

I think the inference was that *all* CUDA support should be under carto/hwloc. I don't think that's quite possible, though, for some of the reasons Rolf mentioned (i.e., we need to do more than just know *where* the accelerators are).

-- 
Jeff Squyres
jsquyres_at_[hidden]
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