[mpiwg-tools] MPI interface matching information exposed through MPI_T

[Jeff Squyres (jsquyres)]

>From my example that we discussed in the WG/webex today:

OMPI has matching network interface information that seems like it would be useful to be able to convey to a tool.  That is, network interface A in process X matches network interface B in process Y (i.e., MPI sends from process X/interface A to process Y/interface B).

If OMPI can expose this semantic information to you, assumedly a tool can use that information somehow, e.g., at a network level (e.g., how many bytes/packets/whatevers were sent on the network between process X and Y).

Sidenote: Don't forget that the network path from interface A to interface B may not be the same as the network path from interface B to interface A.

How can I use MPI_T to expose this information to tools?

-- 
Jeff Squyres
jsquyres at cisco.com
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