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 )

Attachment: bwOMPI.o1969
Description: Binary data


Attachment: bwOMPI.o1979
Description: Binary data

Attachment: bwMPICH.o1978
Description: Binary data


Brock Palen
Center for Advanced Computing
bro...@umich.edu
(734)936-1985


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