Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 80: GRID Computing

T 80.1: Gruppenbericht

Dienstag, 5. März 2013, 16:45–17:05, GER-039

Distributed Computing Operations in the German ATLAS Cloud — •Michael Böhler¹, Anton Gamel¹, Jan Erik Sundermann¹, Andreas Petzold², Gen Kawamura³, Kai Leffhalm⁴, Marisa Sandhoff⁵, Torsten Harenberg⁵, Rod Walker⁶, and Günter Duckeck⁶ — ¹Universität Freiburg — ²KIT Karlsruhe — ³Universität Mainz — ⁴DESY — ⁵Bergische Universität Wuppertal — ⁶LMU München

Before announcing the discovery of a Higgs-like boson at the 4th of July 2012 a huge amount of data had to be distributed around the world and analysed. Moreover, to have well optimised analyses with solid background estimates, Monte Carlo simulated event samples needed to be generated. All of this, data distribution, Monte Carlo production, and also data reprocessing, is performed by the Worldwide LHC Computing Grid. The ATLAS grid computing resources in Austria, the Czech Republic, Germany, Poland, and Switzerland are organized in the GridKa cloud which is one out of 10 ATLAS computing clouds. It consists of the Tier-1 centre at KIT in Karlsruhe which serves as a hub for data management and stores raw ATLAS data and the Tier-2 centres that provide the resources for user analysis and Monte Carlo samples production.

This talk gives an overview of the ATLAS grid computing operations in 2012 focusing on the performance and experiences at both the Tier-1 and Tier-2 centres and it summarises the prospects and requirements for grid computing during and after the long shut-down of the LHC in 2013/2014.