# USING ORSA WITH MPI SUPPORT IN FEDORA
# Last change: Milos Jakubicek, July 24, 2009

There are 4 different builds of orsa with different MPI support:

orsa(-devel) -- No MPI support
orsa-openmpi(-devel) -- Built with OpenMPI support
orsa-mpich(-devel) -- Built with MPICH MPI support

Environment-modules are used to enable parallel installation and usage of all of the supported MPI implementations.
Before using orsa with MPI support, you have to load the particular module, which ensures setting proper PATH and LD_LIBRARY_PATH variables:

First you have to load the functions:

. /etc/profile.d/modules.sh

followed by:

module load openmpi-%{_arch} 
OR
module load mpich-%{_arch}

You can use 

rpm --eval "%{_arch}" 

to find out proper values for your machine.

For unloading a module substitute "load" with "unload" in the above commands.