[mpiwg-rma] RMA Errata

Jim Dinan james.dinan at gmail.com
Wed Dec 17 17:39:31 CST 2014

Hi All,

Reviewing my notes from the WG meeting, it appears that the following
errata would clarify many misunderstandings of the MPI-3 RMA spec:

1) Clarify the target process rank for load/store operations on shared
memory windows.  This is needed so that synchronization operations (e.g.
lock/unlock and PSCW) are well defined on shared memory windows.

2) Clarify that that while there is one copy of the window data in memory
in the unified memory model, there are still public and private views that
must be synchronized according to the RMA semantics.

Is there enough support for these that they should be captured for future

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