On Oct 31, 2008, at 4:52 PM, Gilbert Grosdidier wrote:
To monitor the environment from inside the application, it could be
useful to
issue a 'system("printenv")' call at the very beginning of the main
program,
even before (and after, btw) the MPI_Init call, when running in
serial job mode
with a single CAB, using mpirun.
Note that it may not be safe to call system(), depending on your
environment. It might be better to getenv() to look for the specific
environment variable that you're looking for, or loop over environ to
show the entire environment.
You can also use the -x option to mpirun to export a specific
environment variable to all the MPI processes. If you're using the
rsh/ssh launcher, OMPI won't automatically export mpirun's entire
environment to the MPI processes.
--
Jeff Squyres
Cisco Systems
