Collective performance is something that we are definitely working
on. Some of the collectives have had a fair amount of tuning done
(the "tuned" coll component), but
a) not all of them are done
b) they were originally tuned for TCP networks
Note that b) is somewhat misleading; the "tuned"
I see this too, and had filed
http://openib.org/bugzilla/show_bug.cgi?id=188 for it. I think Jeff
opened a bug in the Open MPI bug tracker for this, he can comment on
when it is scheduled to be fixed.
Scott Weitzenkamp
SQA and Release Manager
Server Virtualization Business Unit
Cisco Systems
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