As of MPI 2.2 there is no longer a restriction against read access to a live send buffer.  The wording was changed to now prohibit the user to "modify".  You can look the subsection of Communication Modes in chapter 3 but you will need to compare MPI 2.1 and 2.2 carefully to see the change.

The change was done by the MPI Forum under Ticket 45.


Dick Treumann  -  MPI Team          
IBM Systems & Technology Group
Dept X2ZA / MS P963 -- 2455 South Road -- Poughkeepsie, NY 12601
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