Status and Future Evolution of the ATLAS Offline Software

[摘要] These proceedings give a summary of the many software upgrade projects undertaken to prepare ATLAS for the challenges of Run-2 of the LHC. Those projects include a significant reduction of the CPU time required for reconstruction of real data with high average pile-up event rates compared to 2012. This is required to meet the challenges of the expected increase in pileup and the higher data taking rate of up to 1 kHz. By far the most ambitious project is the implementation of a completely new analysis model, based on a new ROOT readable reconstruction format, xAOD. The new model also includes a reduction framework based on a train model to centrally produce skimmed data samples and an analysis framework. These proceedings close with a brief overview of future software projects and plans that will lead up to the coming Long Shutdown 2 as the next major ATLAS software upgrade phase.

[发布机构] TRIUMF, 4004 Wesbrook Mall, Vancouver; BC; 2A3, Canada^1;CERN, Geneva 23; CH-1211, Switzerland^2;School of Physics and Astronomy, University of Glasgow, University Avenue, Glasgow; G12 8QQ, United Kingdom^3;Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley; CA; 94720, United States^4

[效力级别] 计算机科学 [学科分类] 计算机科学（综合）

[关键词] Analysis frameworks;Analysis models;ATLAS software;Data sample;Off-line softwares;Pile-ups;Software project;Software upgrades