[mvapich-discuss] Does there exist a compile time flag or runtime function for CUDA support?

[Fang, Leo]

Hello,

I wonder if this issue was received and discussed. I have not heard anything back since then, and we are preparing a release for mpi4py to officially support CUDA-aware MPI. Would be nice to gather this info asap. Thanks.

Best,
Leo
________________________________
寄件者: Fang, Leo <leofang at bnl.gov>
寄件日期: Wednesday, July 17, 2019 3:43:36 PM
收件者: mvapich-discuss at cse.ohio-state.edu <mvapich-discuss at cse.ohio-state.edu>
主旨: Does there exist a compile time flag or runtime function for CUDA support?

Hello,


We recently added support of __cuda_array_interface__<https://urldefense.com/v3/__http://numba.pydata.org/numba-doc/latest/cuda/cuda_array_interface.html__;!!KGKeukY!mLmNdXt0AqgX9gmtuAdpjPQP6V45oFHVOpiVY2ScbzcRHWCrvPUEMfNOnaIX-vCWTZNYkmVXXeFknNQ$ > to mpi4py so that CUDA-aware MPI can be seamlessly utilized. I wonder if MVAPICH provides any compile time marco or runtime function for checking whether CUDA support is enabled or not. I know that Open MPI provides such functionalities: https://urldefense.com/v3/__https://www.open-mpi.org/faq/?category=runcuda*mpi-cuda-aware-support__;Iw!!KGKeukY!mLmNdXt0AqgX9gmtuAdpjPQP6V45oFHVOpiVY2ScbzcRHWCrvPUEMfNOnaIX-vCWTZNYkmVXW0PQQ-w$ , but not sure if I missed it in the MVAPICH doc.

Thanks.


Sincerely,
Leo

---
Yao-Lung Leo Fang
Assistant Computational Scientist
Computational Science Initiative
Brookhaven National Laboratory
Bldg. 725, Room 2-169
P.O. Box 5000, Upton, NY 11973-5000
Office: (631) 344-3265
Email: leofang at bnl.gov<mailto:leofang at bnl.gov>
Website: https://urldefense.com/v3/__https://leofang.github.io/__;!!KGKeukY!mLmNdXt0AqgX9gmtuAdpjPQP6V45oFHVOpiVY2ScbzcRHWCrvPUEMfNOnaIX-vCWTZNYkmVXMKt7cUc$ 

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