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Computing Technical Design Report
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Computing Technical Design Report
In this chapter we describe the main computing operations that ATLAS will have to run. We begin with the preparation and the distribution of the ATLAS software. We then review the operations which will be run on Tier-0, Tier-1 and Tier-2. We explain how we intend to use the ATLAS Virtual Organization and how we intend to operate the productions.
Over the past few years the validation of the Computing Model has been done by running data challenges of increasing scope and magnitude, as was proposed by the LHC Computing Review [6-1]. We describe briefly the two data challenges run since 2002 and how massive productions have been performed in order to provide simulated data to the physicists and to reconstruct and analyse real data coming from test-beam activities.
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