On Apr 15, 2016, at 9:18 AM, Dorier, Matthieu <mdor...@anl.gov> wrote: > > I'd like to know how OpenMPI implements MPI_Bcast. And if different > implementations are provided, how one is selected.
This is a fairly complicated topic. This old paper is the foundation for how Open MPI works (it's a bit different these days, but the basic concepts described in this paper are still mostly relevant): https://www.open-mpi.org/papers/ics-2004/ -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/