open-MPI installation

[Jussi Lehtola]

On Sat, 23 Jul 2011 14:33:17 +1000
Nermin Celik <n.celik00 at gmail.com> wrote:
> Dear Members,
> 
> To run a parallelized version of a program, installed open-MPI via
> Add/Remove Software option on F12. Installation is complete.
> Was just wondering are there any other steps required for
> installing/setting up MPI?

Fedora 12 has been obsolete for some time, please upgrade to a
supported version.

As to your question, current versions of Fedora support simultaneous
installation of multiple MPI libraries. This is why the libraries are
hidden by default. To use OpenMPI, you need to load the environment
module first, e.g. on x86_64 run
 $ module load openmpi-x86_64
after which e.g. the mpirun and mpicc commands work as expected.
-- 
Jussi Lehtola
Fedora Project Contributor
jussilehtola at fedoraproject.org