On Sep 22, 2010, at 1:53 PM, Gabriele Fatigati wrote:
> Thanks Jeff,
> and.. what about RDMA? It works only with point-to-point or also with collectives?
When collectives use the point-to-point sends (e.g., they effectively invoke MPI_SEND as part of MPI_BCAST, for example), that will do all the same things that MPI_SEND does: eager sends for short messages, striping across multiple devices, using RDMA when appropriate, etc.
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