From the Horse's mouth: a copy of the MPI reference manual

I'm diving head first into MPI and related PPing since:
1. its fun and I always wanted to do it!
2. I need to do it for my summer project at IISc which will otherwise take months on the single/dual processor machines.
I was surprised when Hollow told me that you did not have the full manual for MPI (MIT press).
I am a bit aware of some of the problems you ran into while setting up the Beowulf cluster. I will try to get solutions for these since there are people here who are proficient at this sort of stuff.
In any case, I will be adding some notes which I feel are important from the reference manual under this tag. Also, I'll post some bioinformatics problems that can be done when the cluster is up and running on all its feet.