On Aug 11, 2010, at 9:54 AM, Jeff Squyres wrote:

> (I'll say that OMPI's ALLGATHER algorithm is probably not well optimized for 
> massive data transfers like you describe)

Wrong wrong wrong -- I should have checked the code before sending.  I made the 
incorrect assumption that OMPI still only had a trivial gather implementation.  
It does not; there are several different algorithms that may be used for 
ALLGATHER (as determined on the fly at run time, blah, blah, blah).

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