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Working with PROOF
You can use PROOF on the cluster. It is advised to use 6-7 cores when using PROOF line (since we have 8 physical cores per server).
You can find some ATLAS instructions here:
https://twiki.cern.ch/twiki/bin/viewauth/AtlasProtected/PhysicsAnalysisWorkBookPROOF
There is an example in
/users/chakanau/public/proof/
(kindly provided by Duong Nguyen)
How it works:
cd Ana_proof ./RootCore/configure source RootCore/scripts/setup.sh RootCore/scripts/find_packages.sh RootCore/scripts/clean.sh RootCore/scripts/compile.sh python runSkimAna.py
First, we compile RootCore libraries. Then we run “runSkimAna.py”. The actual C++ program is runRootCore.C There are proof or non-proof option at line 55, 56 in runSkimAna.py.
Jet example
A typical example to work with jets is
/users/chakanau/public/proof/jets
Compile the code “make” and run A_RUN_TEST.
The main code is “main.cxx” where you can say tell yes“ to the prooflite option. We fill jet histograms in src/Jets.cxx” (the event loop). src/Truth.cxx - keep track the truth info. Histogram are defined in inc/Ana.h and src/IniHistograms.cxx. The output is in out/output.root.
