[mpich-discuss] Poor performance of Waitany / Waitsome

Jed Brown jed at jedbrown.org
Sat Jan 18 11:48:54 CST 2014

John Grime <jgrime at uchicago.edu> writes:
> Waitsome() seems to give consistently the worst performance ( Waitall < Waitany < Waitsome )

This is concerning because the entire point of Waitsome is to be faster
than repeated calls to Waitany.  In particular, a valid implementation
just calls Waitany and returns one at a time.
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