On Fri, 2008-07-11 at 07:20 -0600, Ralph H Castain wrote: > This variable is only for internal use and has no applicability to a user. > Basically, it is used by the local daemon to tell an application process its > rank when launched. > > Note that it disappears in v1.3...so I wouldn't recommend looking for it. Is > there something you are trying to do with it?
Recently on this list I recommended somebody use it for their needs. http://www.open-mpi.org/community/lists/users/2008/06/5983.php > Reason I ask: some folks wanted to know things like the MPI rank prior to > calling MPI_Init, so we added a few MPI envar's that are available from > beginning of process execution, if that is what you are looking for. It's also essential for Valgrind support which can use it to name logfiles according to rank using the --log-file=valgrind.out.% q{OMPI_MCA_ns_nds_vpid} option. Ashley,
