The CMA API came as reasonably close as I could make it to providing
socket-like
semantics. One of the intents here is to provide an API that feels
familiar to
what people are used to using. I was trying to allow applications to
define
multicast groups using IP addresses, as opposed to GIDs directly. My
understanding is that MPI will use both connected and multicast QPs
for
communication; I wanted to provide a somewhat consistent addressing
model.
IMO this is a good reason to do the work.
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