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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.
SQA and Release Manager
Server Virtualization Business Unit
> -----Original Message-----
> From: users-bounces_at_[hidden]
> [mailto:users-bounces_at_[hidden]] On Behalf Of Maestas,
> Christopher Daniel
> Sent: Monday, October 16, 2006 7:00 AM
> To: users_at_[hidden]
> Subject: [OMPI users] Question on mpi collectives
> How fast/well are MPI collectives implemented in ompi?
> I'm running the Intel MPI 1.1. benchmarks and seeing the need to set
> wall clock times > 12 hours for run sizes of 200 and 300
> nodes for 1ppn
> and 2ppn cases. The collective tests that usually pass in 2ppn cases:
> Barrier, Reduce scatter, allreduce, bcast
> The ones that take long or never run:
> Allgather, alltoall, allgatherv
> users mailing list