[libfabric-users] Collectives

Biddiscombe, John A. john.biddiscombe at cscs.ch
Mon Feb 14 23:55:23 PST 2022

Dear List

The feature matrix shows that only the rxm provider supports collectives (since presumably no providers yet implement them in hardware).

Can the rxm provider be used with any/all of the other providers? Is it safe to assume that if a provider has a missing entry for FI_COLLECTIVE - then it can be supported by using that provider with the rxm wrapper (with the possible exception of USNIC that has a cross in the collectives box).

Specifically, I'd like to try collectives using gni, verbs, tcp and am curious whether it should work, or whether I'd be wasting my time trying.


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