Please see: https://github.com/mpi-forum/mpi-issues/issues/83 https://github.com/mpi-forum/mpi-standard/pull/91 The pull request is new, it replaces a previous branch. This has been substantially rewritten after the past two reading attempts and now includes examples. Thanks, Tony Skjellum -- Anthony Skjellum, PhD [email protected] Cell: +1-205-807-4968