[libfabric-users] Collectives

[Hefty, Sean]

> 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.

Rxm will layer over verbs and tcp, but not gni.  Rxm layers over msg endpoints (this is what the 'm' stands for).

You should be able to test FI_COLLECTIVE over either of those two.

- Sean