Hi, this is difficult to answer such a generic request.
MPI symbols (MPI_Bcast, ...) are defined as weak symbols, so the simplest option is to redefine them an implement them the way you like. you are always able to invoke PMPI_Bcast if you want to invoke the openmpi implementation. a more ompi-ish way is to create your own collective module. for example, the default module is in ompi/mca/coll/tuned Cheers, Gilles On Thursday, February 4, 2016, <asava...@univ-montp2.fr> wrote: > Hello > > Using a new network interface and its ad-hoc routing algorithms I would > like to try my own custom implementation of some collective communication > patterns(MPI_Bcast,MPI_Alltoall,...) without expanding those collective > communications as series of point-to-point ones based on a given predefined > process topology. > > In addition my routing methods might require additional parameters, rather > than the basic destination lists obtained from that topology and the kind > of collective communication considered. > > How would I do that ? > > In which component should I modilfy something ? > > > Regards > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2016/02/18546.php >
