Lhep: 1 revision imported

2015-03-18T07:49:25Z

1 revision imported

← Older revision	Revision as of 09:49, 18 March 2015
(No difference)

Lhep at 12:08, 15 December 2010

2010-12-15T12:08:33Z

New page

== Athena setup ==

Setup the athena enviroment with [https://twiki.cern.ch/twiki/bin/viewauth/Atlas/AtlasSetup asetup].
This one works for me.<br/> Add the following lines to your <code>~/.bash_profile</code>:
<code>
export AtlasSetup=/afs/cern.ch/atlas/software/dist/AtlasSetup
alias asetup='source $AtlasSetup/scripts/asetup.sh'
</code>
(this has to be done only once of course). Then issue
<code>
asetup 16.0.2.5
</code>
to setup in ''AtlasProduction'' 16.0.2.5. <br/>
Make a directory
<code>
mkdir $TestArea
</code>
and <code> cd </code> there. Then check out the package ''Trigger/TrigAnalysis/TrigAnalysisExapmples''. For this, first check, which version corresponds to your release. Do
<code>
cmt show versions Trigger/TrigAnalysis/TrigAnalysisExapmples
</code>
Strange enough this shows a really old package (''TrigAnalysisExamples-00-00-22''), so I checked out the newest version anyway. (Normally you would check out the one shown by<code> cmt show versions</code>.) Anyway, the newest version worked for me. I checked it out by doing
<code>
cmt co -r TrigAnalysisExamples-00-00-27 Trigger/TrigAnalysis/TrigAnalysisExamples
</code>
To make sure you haven't screwed up anywhere, you might want to compile and run:
<code>
cd $TestArea/Trigger/TrigAnalysis/TrigAnalysisExamples/cmt
make -j5
mkdir $TestArea/run # to create a run directory
cd $TestArea/run
get_files TrigMatchExampleJO.py # to grab the joboptions file
athena TrigMatchExampleJO.py | tee joblog # | tee joblog = shows output on screen and also writes it into joblog
</code>
If every thing's fine, you can add a new algorithm.

== Add a new algorithm ==
To add your own ''TriggerAnalysis'' algorithm from scratch, do the following.
In ''Trigger/TrigAnalysis/TrigAnalysisExapmples/src'' create a file TriggerAnalysis.cxx and its header, TriggerAnalysis.h (note that in most other packages, the header files are stored in ''TrigAnalysisExapmples/TrigAnalysisExapmples''. Your algorithm should be able to do the following
* retrieve the reconstructed and the trigger objects
* make some trigger studies
* save everything to a ntuple
In order to create a nice ntuple (which would even be re-readable by athena), you should inherit from CBNT_AthenaAwareBase. Alternatively, you can inherit from AthAlgorithm.

Include a new Algorithm - Revision history

Lhep: 1 revision imported

Lhep at 12:08, 15 December 2010