Hello,
I understand that once Open MPI is built against CUDA, sendbuf/recvbuf can be pointers to GPU memory. I wonder whether or not the “displs" argument of the collective calls on variable data (Scatterv/Gatherv/etc) can also live on GPU. CUDA awareness isn’t part of the MPI standard (yet), so I suppose it’s worth asking or even documenting. Thank you. 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: leof...@bnl.gov<mailto:leof...@bnl.gov> Website: https://leofang.github.io/
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