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Subject: Re: [OMPI users] Questions about MPI_Isend
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-05-11 13:57:15

On May 11, 2010, at 6:49 AM, Terry Dontje wrote:

> Correct the completion of an MPI_Isend request only say's the message buffer is no longer needed. You could use synchronous mode sends MPI_Issend which requests will complete when the message is being processed at the destination (that is matched with a received).

To be totally clear -- the completion of a synchronous send means that the other side has matched the send. It does not mean that the receiver has completely received the message yet. It's a fine distinction, but it can be important sometimes...

Jeff Squyres
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