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From: Brian W. Barrett (brbarret_at_[hidden])
Date: 2006-05-25 17:15:19

On Thu, 25 May 2006, Brock Palen wrote:

> We are trying to track down a problem with our network, the question
> has come up, if its posable that the mpi lib (OMPI) could be using
> ether multicast or broadcast (or both)
> In what cases could multicast traffic be seen if OMPI is our mpi lib.

At this time, Open MPI only uses point-to-point communication -- it does
not use multicast or broadcast. That may change in the long term, but not
until after the next release cycle.