Hey guys, So, I've watched the videos, dug through the release notes, and participated in a few of the weekly meetings and I'm feeling a little more comfortable about being a part of Open MPI - and I'm looking forward to it.
But I find myself needing to look for some direction for my participation over the next few months. First - a little background. Historically, I've been involved with IB/OPA development for 17+ years now, but for the past decade or so I've been entirely focused on fabric management rather than application-level stuff. (Heck, if you ever wanted to complain about why OPA management datagrams are different from IB MADs, feel free to point the finger at me, I'm happy to explain why the new ones are better... ;-) ) However, it was only recently that the FM team were given the additional responsibility for maintaining / participating in our MPI efforts with very little opportunity for a transfer of information with the prior team. So, while I'm looking forward to this new role I'm feeling a bit overwhelmed - not least of which because I will be unavailable for about 8 weeks this summer... In particular, I found an issue in our internal tracking systems that says (and I may have mentioned this before...) OMPI v5.0.0 will remove osc/pt2pt component that is the only component that MTLs use (PSM2 and OFI). OMPI v5.0.0 is planned to be released during summer 2019 (no concrete dates). https://github.com/open-mpi/ompi/wiki/5.0.x-FeatureList. The implications is that none of the MTLs used for Omni-Path will support running one sided MPI APIs (RMA). Is this still accurate? The current feature list says: If osc/rdma supports all possible scenarios (e.g., all BTLs support the RDMA methods osc/rdma needs), this should allow us to remove osc/pt2pt (i.e., 100% migrated to osc/rdma). If this is accurate, I'm going to need help from the other maintainers to understand the reason this is being done, the scope of this effort and where we need to focus our attention. To deal with the lack of coverage over the summer, I've asked a co-worker, Brandon Yates to start sitting in on the weekly meetings with me. Again, I'm looking forward to both the opportunity of working with an open source team, and the chance to focus on the users of our software instead of just the management of the fabric - I'm just struggling at the moment to get a handle on this potential deadline. --- Mike Heinz Networking Fabric Software Engineer Intel Corporation
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