[Mpi-forum] MPI One-Sided Communication

Underwood, Keith D keith.d.underwood at intel.com
Mon Apr 27 07:48:57 CDT 2009

>On the Earth Simulator, there are/were several application codes which are
>using one-sided communication (instead of 2-sided). They used one-sided
>communication especially to overlap communication and computation.
>When I remember correctly, at least one of this applications won a Gordon
>Bell Award of SC.

The ambiguity of the progress rule notwithstanding, there is no particular reason that one-sided should give you better overlap than two-sided.  If this is the reason that people use one-sided, maybe we should revisit the progress rule ;-)


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