Starting June 22nd, 2017, the O2Muon class is accessible in the alo project in the r23 directory (and lib), instead of the (now deprecated) feature-muonhlt

The original feature-muonhtl branch is however still available in the legacy AliRoot directory in gitlab should you need to have a look.

First, get the code from AliRoot (feature-muonhlt) branch in MUON/MUON2 directory, and put it on SAF3

sshfs -o ssh_command="gsissh -p1975" nansafmaster3.in2p3.fr:/home/laphecet ~/saf3
mkdir -p $HOME/saf3/o2
cp $ALICE_ROOT/../src/MUON/MUONO2/O2Muon.* $HOME/saf3/o2

Check on SAF3 that the code is compiling under Root :

saf3-enter
root

gSystem->SetIncludePath("-I$ALICE_ROOT/include");
.L O2Muon.cxx++

And test on a single file that the code is behaving as expected :

echo "root://nansafmaster2//alice/data/2011/LHC11h/000169099/raw/11000169099032.133.FILTER_RAWMUON_WITH_ALIPHYSICS_vAN-20150213.root" > input.txt

gSystem->SetIncludePath("-I$ALICE_ROOT/include")
.L O2Muon.cxx++
O2Muon o2m("local:///cvmfs/alice-ocdb.cern.ch/calibration/data/2011/OCDB");
o2m.makeDigitFiles("input.txt","CPBI2_B1-B-NOPF-ALLNOTRD",true);

Then use condor for the heavy lifting. Prepare a file list for a given run or part of it, in a file ending with the extension .list

root://nansafmaster2//alice/data/2011/LHC11h/000169099/raw/11000169099032.133.FILTER_RAWMUON_WITH_ALIPHYSICS_vAN-20150213.root
root://nansafmaster2//alice/data/2011/LHC11h/000169099/raw/11000169099063.163.FILTER_RAWMUON_WITH_ALIPHYSICS_vAN-20150213.root
root://nansafmaster2//alice/data/2011/LHC11h/000169099/raw/11000169099065.113.FILTER_RAWMUON_WITH_ALIPHYSICS_vAN-20150213.root
root://nansafmaster2//alice/data/2011/LHC11h/000169099/raw/11000169099054.124.FILTER_RAWMUON_WITH_ALIPHYSICS_vAN-20150213.root
root://nansafmaster2//alice/data/2011/LHC11h/000169099/raw/11000169099060.150.FILTER_RAWMUON_WITH_ALIPHYSICS_vAN-20150213.root
root://nansafmaster2//alice/data/2011/LHC11h/000169099/raw/11000169099065.166.FILTER_RAWMUON_WITH_ALIPHYSICS_vAN-20150213.root
...

Use the following makedigits.condor file :

universe=vanilla

executable=$ENV(HOME)/o2/makedigits/makedigits.sh

# Don't send annoying email notifications
Notification = Never

# stdout and stderr of PoD jobs
Output        = makedigits.out
Error         = makedigits.err
Log           = makedigits.log

# we want to transfer files
should_transfer_files = YES
when_to_transfer_output = ON_EXIT

rank = -SlotID

Input = $ENV(HOME)/.PoD/user_worker_env.sh

include : $ENV(HOME)/o2/makedigits/list-input.sh |

where the list-input.sh script is generating the queue commands from any file with extension .list. In that file you might want to change the ninput parameter which decide how many files you will process per condor job.


# split by chunks of n raw files
ninput=50

for file in $(ls $HOME/o2/makedigits/*.list)
do

	n=0
	index=0

	f=$(basename $file)

	mkdir -p $HOME/o2/makedigits/$f.dir

	cd $HOME/o2/makedigits/$f.dir
	rm -rf input.*

	for l in $(cat $file)
	do
		echo $l >> input.$index
		(( n += 1))
		if (( $n % $ninput == 0 ))
		then
			echo "transfer_input_files=\$ENV(HOME)/o2/makedigits/$f.dir/input.$index,\$ENV(HOME)/o2/O2Muon.cxx,\$ENV(HOME)/o2/O2Muon.h"
			echo "arguments = input.$index"
			echo "queue"
			(( index +=1 ))
			n=0
		fi
	done
done

if (( $n > 0 && $n < $ninput ))
then
	echo "transfer_input_files=\$ENV(HOME)/o2/makedigits/$f.dir/input.$index,\$ENV(HOME)/o2/O2Muon.cxx,\$ENV(HOME)/o2/O2Muon.h"
	echo "arguments = input.$index"
	echo "queue"
fi

And finally the script doing the job, makedigits.sh, which is using the O2Muon class from AliRoot/MUON/MUONo2 package.

#!/bin/bash

source  /cvmfs/alice.cern.ch/etc/login.sh
source `which alienv` setenv VO_ALICE@AliRoot::v5-08-02-1

alienv list

echo "arg=$1"

pwd
ls -al

  root -b << EOF
    gSystem->SetIncludePath("-I$ALICE_ROOT/include");
    .L O2Muon.cxx++
    O2Muon o2m("local:///cvmfs/alice-ocdb.cern.ch/calibration/data/2011/OCDB");
    o2m.makeDigitFiles("$1","CPBI2_B1-B-NOPF-ALLNOTRD",true);
    .q
EOF