[mpiwg-ft] MPI_Comm_revoke behavior

Richard Graham richardg at mellanox.com
Wed Nov 27 13:33:05 CST 2013

I am thinking about the next step, and have some questions on the semantics of MPI_Comm_revoke()

-          When the routine returns, can the communicator ever be used again ?  If I remember correctly, the communicator is available for point-to-point traffic, but not collective traffic - is this correct ?

-          Looking forward, if one wants to restart the failed ranks (let's assume we add support for this), what can be assume about the "repaired" communicator ?  What can't I assume about this communicator ?

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