Re: [OMPI users] Performance question about OpenMPI and MVAPICH2 on IB

[Terry Dontje]

Hi Neeraj,

Were there specific collectives that were slower?  Also what kind of cluster 
were you running on?  How many nodes and cores per node?

thanks,

--td

Message: 3
Date: Fri, 7 Aug 2009 16:51:05 +0530
From: nee...@crlindia.com
Subject: Re: [OMPI users] Performance question about OpenMPI and
        MVAPICH2        on      IB
To: Open MPI Users <us...@open-mpi.org>
Cc: us...@open-mpi.org, users-boun...@open-mpi.org
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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.

Regards

Neeraj Chourasia (MTS)
Computational Research Laboratories Ltd.
(A wholly Owned Subsidiary of TATA SONS Ltd)
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Pune 411016 (Mah) INDIA
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