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From: Galen M. Shipman (gshipman_at_[hidden])
Date: 2006-06-13 10:14:46


Hi Brock,

You may wish to try running with the runtime option:

-mca mpi_leave_pinned 1

This turns on registration caching and such..

- Galen

On Jun 13, 2006, at 8:01 AM, Brock Palen wrote:

> I ran a test using openmpi-1.0.2 on OSX vs mpich-1.2.6 from
> mryicom and i get lacking results from OMPI,
> at point point there is a small drop in bandwidth for both MPI
> libs, but open mpi does not recover like mpich, and further on you
> see a decreese in bandwidth for OMPI on gm.
>
> I have attached in png and the outputs from the test (there are
> two for OMPI )
> <bwMyrinet.png>
> <bwOMPI.o1969>
> <bwOMPI.o1979>
> <bwMPICH.o1978>
>
> Brock Palen
> Center for Advanced Computing
> brockp_at_[hidden]
> (734)936-1985
>
>
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