Feedback on MPI Timer requests presentation: - MPI_Request_free is ambiguous in the standard. We should define specific requirement that MPI_Request_free actually frees timer requests, rather than leak or provide some other indeterminate behavior. - MPI_Timer_reset should take request by value, not ref, as it doesn't free the request handle. - Some folks suggested they would rather see new 'poll' functions that take a timeout as a parameter rather than as a timer request. This potentially avoids having to scan input requests looking for minimum time. However, it requires special handling for reporting timeouts. - Need text to prevent implementations ignoring MPI_Cancel. Text in standard about local operations must complete, leverage that.