I have old MPI code that expects 4 nodes....
It uses a few MPI commands with MPI_COMM_WORLD
for the MPI_COMM argument.
I want to run this code multiple times on
a 12 node supercomputer with a new main program
that runs 3 instances of it.
What is easiest way to run lots of 4 node
runs at same time on 12 node supercomputer???
Can I just define 3 communicators and then
change the mpi_comm argument from MPI_COMM_WORLD
to 1 of 3 new mpi_comm variables???
Do I need to mess with groups??? (i.e. does
a mpi_comm variables specify a set of nodes?)
Chris
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Dr. Christian Seberino
SPAWAR Systems Center San Diego
Code 2872
49258 Mills Street, Room 158
San Diego, CA 92152-5385
U.S.A.
Phone: (619) 553-9973
Fax: (619) 553-6521
Email: seberino_at_[hidden]
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