====== CMSSW notes and basic stuffs ======

[ __[[vlsi:personalpages:pacher:cmstk|Back]]__ ]
[ __[[vlsi:personalpages:pacher:cmstk:tracking|Tracking]]__ ]




====== CMS offline WorkBook (public) ======

[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBook]]

====== UNIX environment ======

[[http://information-technology.web.cern.ch/services/lxplus-service]]                         \\
[[http://information-technology.web.cern.ch/book/lxplus-service/lxplus-guide/lxplus-aliases]] \\
[[http://information-technology.web.cern.ch/book/lxplus-service/lxplus-5-and-6-differences]]


__**AFS**__

AFS home directory (2GB disk quota by default):

''/afs/cern.ch/user/l/lpacher''

<code>
linux% fs lq
</code>


AFS workspace (must be activated!):

''/afs/cern.ch/work/l/lpacher''


__**CASTOR**__

CASTOR area, accessible only using Remote File (''rf*'') commands:

''/castor/cern.ch/user/l/lpacher''

[[http://information-technology.web.cern.ch/services/castor-service]] \\
[[http://castor.web.cern.ch/]]



__**SCRAM**__

SCRAM (Software Configuration, Release and Management): \\
''/cvmfs/cms.cern.ch/common/scram''

Note: ''scramv0'' and ''scramv1'' are just symlinks to ''scram'',

<code>
linux% ls -l /cvmfs/cms.cern.ch/common | grep scram
-rwxr-xr-x. scram
lrwxrwxrwx. scramv0 -> scram
lrwxrwxrwx. scramv1 -> scram
</code>


<code>
linux% scram -h / man scram
</code>

[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookScramV1Intro]] \\
[[https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideScram]]



__**CMSSW area setup**__

Working area setup:

<code>
linux% scram project CMSSW <CMSSW release>
</code>

<code>
linux% cmsrel <CMSSW release>
</code>

Note: ''cmsrel'' is just an alias for ''scramv1 project CMSSW''

<code>
linux% which cmsrel
cmsrel:   aliased to scramv1 project CMSSW
</code>


UNIX environment setup (PATH and other CMS-specific environment variables):

<code>
linux% cd ~/scratch/CMSSW_x_y_z/src/
linux% cmsenv
</code>

Note: ''cmsenv'' is just an alias for ''eval `scramv1 runtime -csh`''

<code>
linux% which cmsenv
cmsenv:   aliased to eval `scramv1 runtime -csh`
</code>




[[http://indico.cern.ch/getFile.py/access?contribId=0&resId=0&materialId=slides&confId=86694|
CMSSW tutorial (indico.cern.ch)]]

[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/SWGuideAboutPythonConfigFile|
Description of the cmsRun Python Configuration Syntax]]




====== Git configuration ======

1. Create a GitHub account on 

[[https://github.com/join]]

2. With valid login credentials, fork the CMSSW repository on

[[https://github.com/cms-sw/cmssw]]



3. on lxplus, configure git with

<code>
linux% git config --global user.name 'Luca Pacher'
linux% git config --global user.email pacher@to.infn.it
linux% git config --global user.github lpacher
</code>

====== CMSSW Software Cross Reference (lxr) ======

[[https://cmssdt.cern.ch/SDT/lxr]]



======  Locating datasets ======

[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookLocatingDataSamples]]


======  EDM tools ======

[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookEdmInfoOnDataFile]]

[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookEdmUtilities]]



====== CMSSW job basics ======

Python config file: \\
[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookConfigFileIntro]]


XML build file: \\
[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookBuildFilesIntro]]  \\
[[https://twiki.cern.ch/twiki/bin/view/CMSPublic/SWGuideBuildFile]]



====== EDAnalyzer basics =======

<code>
linux% mkedanlzr -help
</code>

<code>
linux% mkedanlzr -track -histo moduleName
</code>