Difference between revisions of "OpenMPI"

Revision as of 11:05, 12 July 2012

If you want to permanently use some MCA parameter settings, you can create a file $HOME/.openmpi/mca-params.conf, e.g.:

cat $HOME/.openmpi/mca-params.conf
btl_tcp_if_exclude = lo,eth1

Process can be bound to specific sockets and cores on nodes by choosing right options of mpirun.

@@ Line 10: / Line 10: @@
 Process can be bound to specific sockets and cores on nodes by choosing right options of mpirun.
 * [http://www.open-mpi.org/doc/v1.4/man1/mpirun.1.php#sect9 Process binding]
-* [http://www.open-mpi.org/doc/v1.4/man1/mpirun.1.php#sect10 Rankfiles]
+* [http://www.open-mpi.org/doc/v1.4/man1/mpirun.1.php#sect10 Rankfile]
-== Debugging applications on Multiprocessors/Multicores ==
-* [http://www.open-mpi.org/faq/?category=debugging#serial-debuggers Serial Debugger (Gdb)]
-** 1. Attach to individual MPI processes after they are running.<br />  For example, launch your MPI application as normal with mpirun. Then login to the node(s) where your application is running and use the --pid option to gdb to attach to your application.
-** 2. Use mpirun to launch xterms (or equivalent) with serial debuggers.
-      shell$ mpirun -np 4 xterm -e gdb my_mpi_application
-* [http://www.open-mpi.org/faq/?category=debugging#parallel-debuggers Parallel Debugers]
-** [http://www.open-mpi.org/faq/?category=running#run-with-tv TotalView]
-** [http://www.open-mpi.org/faq/?category=running#run-with-ddt DDT]
 == PERUSE ==
 [[Media:current_peruse_spec.pdf|PERUSE Specification]]