PanDA, production and distributed analysis system, manages jobs for ATLAS since 2005. Since that time the system has grown up and in 2013 the BigPanDA project started, aiming to prepare packets of PanDA which can be used by outside the LHC. One of the experiments to which production management PanDA is being applied, is COMPASS at CERN. The workflow of the experiment has to be changed to enable Grid for production and user jobs. Lots of the infrastructure work should be performed. PanDA job definition :
- replaces native batch system job definition,
- automatic submission to Condor computing elements comes in place of console job submission,
- Grid user certificates identify job submitters instead of AFS user names,
- Grid storage elements substitute local directories on AFS and EOS.
- Production software moves from private directory of production account to CVMFS.
Also, a virtual orgatization with role management has to be established for the experiment.