On Feb 10, 2012, at 3:32 PM, Paul H. Hargrove wrote:

> The point of the question isn't related to WHY eth8 is useless - just assume 
> it is.
> Assume it is UP, but useless for whatever reasons motivated writing FAQ #220.
> It could be Terry's example of a port connected to the service processor.
> 
> The concern is what happens in this situation when the user, following the 
> advice in the FAQ, passes an explicit setting for btl_tcp_if_exclude, which 
> DOES NOT include virbr0?
> They don't know it was there before, or that it needs to be there (the FAQ 
> states that lo MUST be included).
> So, by following the FAQ they don't resolve their problem.
> OMPI ceases any attempts use of eth8 (or whatever), but loss of the implicit 
> virbr0 from the exclude list results in their system attempting to use virbr0 
> (and thus continue to fail).  Right?
> 
> Maybe the FAQ just needs an update to address my concern.

Got it.  Sure, I can update the faq to be a bit more loose in the definition of 
what must be excluded.

-- 
Jeff Squyres
jsquy...@cisco.com
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