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Re: [Starpu-devel] OpenCL backend on CPU


Chronologique Discussions 
  • From: Samuel Thibault <samuel.thibault@ens-lyon.org>
  • To: Sylvain HENRY <sylvain.henry@inria.fr>
  • Cc: "starpu-devel@lists.gforge.inria.fr" <starpu-devel@lists.gforge.inria.fr>, augonnet@nvidia.com
  • Subject: Re: [Starpu-devel] OpenCL backend on CPU
  • Date: Thu, 8 Sep 2011 18:54:19 +0200
  • List-archive: <http://lists.gforge.inria.fr/pipermail/starpu-devel>
  • List-id: "Developers list. For discussion of new features, code changes, etc." <starpu-devel.lists.gforge.inria.fr>

Sylvain HENRY, le Thu 08 Sep 2011 15:07:44 +0200, a écrit :
> I'm using StarPU's OpenCL backend on CPU (using AMD's or Intel's
> implementation). The problem is that StarPU considers the CPU device as
> remote and thus performs asynchronous data transfers while it could work on
> data in-place.

Ok, I think in that case we need to make the OpenCL driver aware that
CPU devices are actually on node 0, and create buffers on registration
or lazy allocation of the node 0 buffer. We'll see that.

Samuel





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