Hardware configuration of PROOF

I hope you realise that PROOF is NOT a “general purpose batch system”.
In order to understand what it is good for, see, for example (search for the string “PROOF” inside):
“ROOT User’s Guide” → “Trees” → “Using TTree::MakeSelector”
“ROOT Primer” → “File I/O and Parallel Analysis” → “N-tuples in ROOT” → “For the advanced user: Processing trees with a selector script”
TSelector