O2openaccess

Repository for ALICE open access software

ALICE software documentation

https://aliceo2group.github.io/analysis-framework/
https://indico.cern.ch/event/1267433/timetable/#20230417.detailed

Structure of repository

• Root of repository have the enable/enable_local and build_cmd scripts used for
  loading O2Physics environment and build the example analysis from src/ directory

• analysis/ directory contain the files required to run the exampla analysis

• cmake/ and src/ contain the example analysis task

• container/ have the tools to build an cvmfs enabled EL9 container

• cvmfs/ have the tools to use a cvmfs enabled container

• upload/ have the tools to upload data to OpenData EOS storage

Environment setup

The environment (the package dependencies and the package path) is setup by running:

• For usage of cvmfs distributed O2Physics: source enable
• For usage of a local compiled O2Physics: source enable_local

There are a few of steering env vars:
O2OPENACCESS_SW_TAG_LOCAL : tag name to be used for O2Physics dependency(local installed); It has a default of: latest-o2physics-o2

O2OPENACCESS_SW_TAG_CVMFS : tag name to be used for O2Physics dependency(cvmfs based); It has a default of: daily-20251023-0000-1

Building

Use ./build_cmd for task compilation It has the following flags:

• debug - enable very verbose debug options for cmake

The build script make use of enable env setup script described above.

Running

Use the provided ./run_analysis example to run analysis in an already loaded environment

To find help on options use: o2-analysistutorial-flow-analysis --help

or for more comprehensive help o2-analysistutorial-flow-analysis --help full

Running in singularity container

See the content of cvmfs directory

• ./run_cvmfs_analysis will load a cvmfs O2Physics version and run the analysis
• ./cvmfs_cmd will run the above script within the provided container with the help of cvmfs2go script