Were there specific collectives that were slower? Also what kind of cluster were you running on? How many nodes and cores per node?
> Message: 3
> Date: Fri, 7 Aug 2009 16:51:05 +0530
> From: neeraj_at_[hidden]
> Subject: Re: [OMPI users] Performance question about OpenMPI and
> MVAPICH2 on IB
> To: Open MPI Users <users_at_[hidden]>
> Cc: users_at_[hidden], users-bounces_at_[hidden]
> Content-Type: text/plain; charset="us-ascii"
> Hi Terry,
> I feel hierarchical collectives are slower compare to tuned one. I
> had done some benchmark in the past specific to collectives, and this is
> what i feel based on my observation.
> Neeraj Chourasia (MTS)
> Computational Research Laboratories Ltd.
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