The ATLAS Distributed Computing: the challenges of the future
H. Sakamoto · 2014
The ATLAS experiment has collected more than 25 fb-1 of data since LHC has started its operation in 2010.Tens of petabytes of collision events and Monte-Carlo simulations are stored over more than 150 computing centers all over the world.The data processing is performed on grid sites providing more than 100.000computing cores and orchestrated by the ATLAS inhouse developed job and data management services.The discovery of the Higgs-like boson in 2012 would not have been possible without the excellent performance of the ATLAS Distributed Computing.The future ATLAS experiment operation with increased LHC beam energy and luminosity foreseen for 2014 imposes a significant increase in computing demands that ATLAS Distributed Computing needs to satisfy.Therefore, a development of the new dataprocessing, storage and data-distribution systems has been started to efficiently use the computing resources exploiting current and future technologies of distributed computing.