I extended and cleaned up the Nonblocking Process Creation and Management proposal on the wiki: https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Async-proc-mgmt I added the rest of the nonblocking interface proposals, and touched up some of the language. I do not have an implementation yet, but will work on that next. There are a few items that I need to refine a bit still (e.g., MPI_Cancel, mixing of blocking and nonblocking), but this should give us a foundation to start from. I would like to talk about this next week during our working group slot at the MPI Forum meeting. Let me know what you think, and if you see any problems. Thanks, Josh