[libfabric-users] Multiple ranks/instances on the same node

Biddiscombe, John A. biddisco at cscs.ch
Tue Sep 8 03:59:35 PDT 2020

Dear List

If I have multiple processes (ranks) on the same node, and they send messages to each other. Does libfabric auto-magically do the right thing and use some kind of shared memory for them. If not - can this be enabled by using one of the shared memory providers (in conjunction with the gni provider for example) - and if this is the case, does one need to use a special endpoint to communicate within node - or will that be handled automatically.



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