Is OpenMPI using Multicast for things like MPI_Bcast() ?
Some simple tests of really old versions (1.0.2) showed binary tree
type performance, while latter versions gave me the same run time no
matter how many CPU's I used.
Thus this lead me to believe that something like multicast is in
use. Is it?
Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
brockp_at_[hidden]
(734)936-1985
![[Flag]](../../../../../community/mirrors/flag-us.gif){kind=small}