I would like to give Open MPI a test drive on some machines I have in my lab and I have a few questions...
 
The machines are RHEL 5.4 machines and an older version of Open MPI was already installed.  I understand from the faq that I should not simply over write the old installation, but would it be better if I remove the old version or install the new to a different location.  I have no need for the old version.
 
Are there test apps with the Open MPI distribution that I can use to produce some benchmarks?  One thing I want to get an idea of data transfer rates as a function of the size of the data transferred. 
 
Thanks,
Ed