Setting up the MPI caused me a bit of trouble when I first tried it (but that was some time ago now).
I think I misunderstood the term "dedicated" for one thing.
I think more log files are neccessary to see what is going on.
How many parallel jobs is your MPI job setup to run? 2?
Have you tried the following:
* Running the job on one of the execution nodes outside of Condor? (ensures all MPI libs are OK)
* Trying the setup for 1 machine, and submitting under vanilla (ensures submit file is copying all the
files it needs and MPI libs are accessible under condor)
* Running a vanilla job that just runs "env" (on unix) to ensure that the MPI setup is there for the
user the job runs as