Sep 2 – 9, 2007
Victoria, Canada
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Large-scale ATLAS Production on EGEE

Sep 5, 2007, 2:20 PM
20m
Carson Hall B (Victoria, Canada)

Carson Hall B

Victoria, Canada

oral presentation Computer facilities, production grids and networking Computer facilities, production grids and networking

Speaker

Dr Xavier Espinal (PIC/IFAE)

Description

In preparation for first data at the LHC, a series of Data Challenges, of increasing scale and complexity, have been performed. Large quantities of simulated data have been produced on three different Grids, integrated into the ATLAS production system. During 2006, the emphasis moved towards providing stable continuous production, as is required in the immediate run-up to first data, and thereafter. Here, we discuss the experience of the production done on EGEE resources, using submission based on the gLite WMS, CondorG and a system using Condor glide-in's. The overall walltime efficiency of around 90% is largely independant of the submission method, and the dominant source of wasted cpu comes from data handling issues. The efficiency of grid job submission is significantly worse than this, and the glide-in method benefits greatly from factorising this out.
Submitted on behalf of Collaboration (ex, BaBar, ATLAS) ATLAS

Primary authors

Dr Rodney Walker (TRIUMF) Dr Simone Campana (CERN) Dr Xavier Espinal (PIC/IFAE)

Presentation materials