Here's the notes from today's WG con call. https://github.com/mpiwg-ft/ft-issues/wiki/2017-09-27 mpiwg-ft/ft-issues Attendees * Intel - Wesley * Argonne - Ken, Yanfei * UTK - Aurelien * ORNL - Geoffroy Error Handlers * Wesley made edits based on the feedback from the face-to-face. * There are still a couple of very minor edits that need to be made Process Fault Tolerance * Is it possible to use ULFM and Reinit at the same time? * Not sure how they can be composed (even if the smaller communicator used ULFM) because the error handler for the larger communicator is still likely to be triggered after a process failure, which would trigger reinit. * We don't think it's a problem to use error handlers, but if using MPI_ERRORS_REINIT, it would need to be consistent across all communicators. * We still like using error handlers better than an API call * It doesn't create a new API interface * Changing the error handler is already required for process fault tolerance anyway. TODO Items * Aurelien - Write first draft of ULFM composability/recovery advice to have libraries repair MPI in one place. * Aurelien - Merge MPI_COMM_ISHRINK branch * Aurelien - Go back over other ULFM branches so we can discuss them next time * Wesley - Go back through ULFM RMA discussions to see what we need to do (if anything to move forward). * Wesley - Improve slides for catastrophic errors to include example use cases