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Re: [Starpu-devel] OpenCL in StarPU


Chronologique Discussions 
  • From: Samuel Thibault <samuel.thibault@ens-lyon.org>
  • To: Usman Dastgeer <usman@live.ca>, furmento@labri.fr
  • Cc: starpu-devel@lists.gforge.inria.fr
  • Subject: Re: [Starpu-devel] OpenCL in StarPU
  • Date: Thu, 9 Dec 2010 18:28:27 +0800
  • 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>

Hello,

Usman Dastgeer, le Thu 09 Dec 2010 11:20:52 +0100, a écrit :
> Which OpenCL implementation are you using in StarPU. Is is NVIDIA or AMD
> implementation?

We have mostly tested the NVIDIA implementation, but plan to test the
AMD one too.

> #ifdef STARPU_USE_OPENCL // it works but when you submit tasks only with
> OpenCL, it says "no worker may execute this task"

Did you set STARPU_NCUDA to e.g. 0 and STARPU_NOPENCL to 1, to prevent
CUDA from stealing all the GPUs for itself? (OpenCL and CUDA can not run
at the same time on the same GPU).

Nathalie, I guess that should be documented in starpu.texi, maybe we
should add CUDA- and OpenCL-specific sections.

Samuel





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