Hi All, The Hybrid WG will meet from 10:30 - 12:00 on Wednesday, Sept 28. I would like to spend this meeting reviewing different approaches to Accelerator stream/graph integration. At the moment, we have three approaches: (1) MPIX_Queue as a new MPI object (Naveen) (2) MPIX_Queue as arguments to a function (Jim) (3) MPIX_Stream (Hui) Please let me know if you have an approach that you would like to share. The goal for this discussion will be to determine a path toward a unified proposal. I don't expect we will eliminate any proposals during the discussion, but would like to gather pro/con of each and additional data/questions that we feel can help the WG narrow down the field of proposals in future work. If time allows, I'd also like to touch briefly on accelerator triggered partitioned communication with the same goal of mapping out a path to a proposal for the MPI standard. In case you missed it, HACC also has a reading scheduled for this week: https://github.com/mpi-forum/mpi-standard/pull/714 Thanks, ~Jim.