+1 on what Gilles said. A little more detail:
1. You can simply write your own "MPI_Bcast" and interpose your version before
Open MPI's version. E.g.,:
-
$ cat your_program.c
#include
int MPI_Bcast(void *buffer, int count, MPI_Datatype datatype,
int root, MPI_Comm comm)
{
/
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-
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
