Please schedule a reading for issue #25 (pull request #29). https://github.com/mpi-forum/mpi-issues/issues/25 <https://github.com/mpi-forum/mpi-issues/issues/25> Adding Persistent Collective Communication · Issue #25 ... <https://github.com/mpi-forum/mpi-issues/issues/25> github.com This ticket proposes non-blocking persistent collective operations be added to the standard. The associated PR is at: mpi-forum/mpi-standard#29 Useful links: https://github.com/mpi-forum/mpi-issues/issues/25 https://github.com/mpi-forum/mpi-standard/pull/29 https://github.com/mpi-forum/mpi-standard/files/1483740/mpi32-report.pdf Summary of changes: Point to point chapter ----------------------------- 3 .9 Clarification that persistent collective requests cannot be freed while active. Collective Communication Chapter ---------------------------------------------- 5.13 Added Persistent collective communication functions 5.13.1 -- Added section to discuss Info Keys related to Persistent Collectibrs 5.13.2-5.13.13 -- Added one-to-one a persistent collective for every corresponding nonblocking collective Process Topologies chapter ------------------------------------ Added Section 7.8 -- Persistent collective communication for communication on process topologies; added one-to-one a function for every nonblocking topological collective operation As noted previously, we have a working functional implementation (libPNBC) as well. This is the implementation that matches the proposal. Please note that this will be a full reading. We went over the material in the September meeting, but determined we needed to do a new reading in December after making clarifications on several points raised in Chicago. In particular, we explain the semantics of MPI_Request_free for collective requests. And, we explain the life-cycle of persistent collectives requests as being valid for zero-or-more uses after their respective _Init. Thank you, Tony Skjellum, Puri Bangalore, and Dan Holmes -- Anthony Skjellum, PhD [email protected] Cell: +1-205-807-4968 <(205)%20807-4968>