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- From: Samuel Thibault <samuel.thibault@inria.fr>
- To: David <dstrelak@cnb.csic.es>
- Cc: starpu-devel@inria.fr
- Subject: Re: [starpu-devel] Suspicious check in the cuda memory allocation routine
- Date: Sat, 15 May 2021 16:47:43 +0200
- Ironport-hdrordr: A9a23:mvHSrK8rUvcpsUfiCYVuk+DbI+orL9Y04lQ7vn2ZLiYlFfBw9vre+MjzsCWetN9/YhAdcLy7VZVoOEm9yXcW2/hyAV7KZmCPhILPFu9fBKTZrAEIcBeVygcy78tdm78XMqySMbCl5vyKhTWFLw==
- Organization: I am not organized
Hello,
David, le mer. 12 mai 2021 13:04:43 +0200, a ecrit:
> if (status == cudaSuccess && cuda_mem_free < (size*2))
>
> In our use case, we tried to allocate roughly 2GB block on a card with
> 5,9GB of
> memory, but less than 4GB were available at that time, so this check
> succeeded
> and hence no memory was allocated.
> Is the '2' in the 'cuda_mem_free < (size*2)' there on purpose? We did not
> find
> anything related to this in the documentation.
It was a bit rough and excessive indeed. I have now made it rather a
~+10%.
Samuel
- [starpu-devel] Suspicious check in the cuda memory allocation routine, David, 12/05/2021
- Re: [starpu-devel] Suspicious check in the cuda memory allocation routine, Samuel Thibault, 15/05/2021
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