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.