[mpiwg-tools] Open MPI pvar scheme

[Jeff Squyres (jsquyres)]

We got essentially the same feedback from the OMPI developer community that the tools working group gave: how would a tool find the state pvar to associate the other pvar array slots?

The answer we're currently using is what we discussed on the tools call: <prefix> is a state variable with enumeration, and all <prefix><name> pvars are expected to use the mapping of that state variable.  For exmple, btl_usnic_num_sends will follow the pattern established by the btl_usnic pvar state variable.

Any other ideas for a convention?

-- 
Jeff Squyres
jsquyres at cisco.com
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