Running Using PROOF on Demand(PoD)

Proof is a framework for running many root analyses in parallel. It can be run locally using PROOF-lite which will utilise multiple cores on one machine or it can be run on many machines usind the PoD framework.

Installing and Building

To Install PROOF on Demand first we must get and unpack the code.

cd $HOME
wget http://pod.gsi.de/releases/pod/3.10/PoD-3.10-Source.tar.gz
tar -xzvf PoD-3.10-Source.tar.gz

To build the code do

cd $HOME/PoD-3.10-Source
mkdir build
cd build
cmake -C ../BuildSetup.cmake ..
make
make install
cd
source myVH_research/ElectroweakBosons/trunk/scripts/setup_pod_lxplus.sh
cd PoD/3.10/
source PoD_env.sh

To change the working directory PoD uses along with many other settings just edit $HOME/.PoD/PoD.cfg

Now create a file called $HOME/.PoD/user_worker_env.sh and put the following settings in it

#! /usr/bin/env bash
echo "Setting user environment for workers ..."
export LD_LIBRARY_PATH=/afs/cern.ch/sw/lcg/external/qt/4.4.2/x86_64-slc5-gcc43-opt/lib:\
/afs/cern.ch/sw/lcg/external/Boost/1.44.0_python2.6/x86_64-slc5-gcc43-opt//lib:\
/afs/cern.ch/sw/lcg/app/releases/ROOT/5.30.01/x86_64-slc5-gcc43-opt/root/lib:\
/afs/cern.ch/sw/lcg/contrib/gcc/4.3.5/x86_64-slc5-gcc34-opt/lib64:\
/afs/cern.ch/sw/lcg/contrib/mpfr/2.3.1/x86_64-slc5-gcc34-opt/lib:\
/afs/cern.ch/sw/lcg/contrib/gmp/4.2.2/x86_64-slc5-gcc34-opt/lib
echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH"

Then create a file called $HOME/.PoD/user_xpd.cf and put the line xpd.root allow in it.