3 DIRAC

The DIRAC backend is the way that LHCb jobs are executed on the grid. They will go through the DIRAC workload management system that takes care of all LHCb jobs on the grid.

Note: As a pre-requisite you need to have a Grid certificate, have your .globus directory correctly confugured and be a member of the LHCb virtual organisation (VO).

For input data you will have to specify it as logical filenames (LFNs) rather than the physical filenames (PFNs) that are used if you run on specific local files. The bookkeeping database returns LFNs by default so this should be easy.

See Also:

In addition to the monitoring within GANGA, you can monitor the progress on the DIRAC monitoring webpage

http://lhcb.pic.es/DIRAC/Monitoring/Analysis/

. To get the corresponding id look at j.backend.id for your GANGA job.

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