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- From: Samuel Thibault <samuel.thibault@ens-lyon.org>
- To: Hush Zhou <hush.zhou@gmail.com>
- Cc: starpu-devel@lists.gforge.inria.fr
- Subject: Re: [Starpu-devel] STARPU_ENABLE_CUDA_GPU_GPU_DIRECT doesn't work
- Date: Tue, 15 Apr 2014 15:31:36 +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>
Hello,
Hush Zhou, le Tue 15 Apr 2014 08:24:19 -0500, a écrit :
> STARPU_NCPU=2 STARPU_NCUDA=2 STARPU_ENABLE_CUDA_GPU_GPU_DIRECT=1
> ./cholesky_implicit
> It seems that data didn't transfer directly from GPU to GPU. Is it
> normal? How could I solve this problem?
We never managed to get cudaMemcpy3DPeer working, even in very basic
cases. Perhaps CUDA got its bugs fixed in the meanwhile, and we should
try to make it work.
Samuel
- [Starpu-devel] STARPU_ENABLE_CUDA_GPU_GPU_DIRECT doesn't work, Hush Zhou, 15/04/2014
- Re: [Starpu-devel] STARPU_ENABLE_CUDA_GPU_GPU_DIRECT doesn't work, Samuel Thibault, 15/04/2014
- Re: [Starpu-devel] STARPU_ENABLE_CUDA_GPU_GPU_DIRECT doesn't work, Samuel Thibault, 17/04/2014
- Re: [Starpu-devel] STARPU_ENABLE_CUDA_GPU_GPU_DIRECT doesn't work, Samuel Thibault, 15/04/2014
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