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ATLAS Distributed Computing Operations: Experience and improvements after 2 full years of data-taking

This paper summarizes operational experience and improvements in ATLAS computing infrastructure in 2010 and 2011. ATLAS has had 2 periods of data taking, with many more events recorded in 2011 than in 2010. It ran 3 major reprocessing campaigns. The activity in 2011 was similar to 2010, but scalabil...

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Detalles Bibliográficos
Autores principales: Jezequel, S, Stewart, G
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1444600
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author Jezequel, S
Stewart, G
author_facet Jezequel, S
Stewart, G
author_sort Jezequel, S
collection CERN
description This paper summarizes operational experience and improvements in ATLAS computing infrastructure in 2010 and 2011. ATLAS has had 2 periods of data taking, with many more events recorded in 2011 than in 2010. It ran 3 major reprocessing campaigns. The activity in 2011 was similar to 2010, but scalability issues had to be addressed due to the increase in luminosity and trigger rate. Based on improved monitoring of ATLAS Grid computing, the evolution of computing activities (data/group production, their distribution and grid analysis) over time is presented. The main changes in the implementation of the computing model that will be shown are: the optimization of data distribution over the Grid, according to effective transfer rate and site readiness for analysis; the progressive dismantling of the cloud model, for data distribution and data processing; software installation migration to cvmfs; changing database access to a Frontier/squid infrastructure.
id cern-1444600
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14446002019-09-30T06:29:59Zhttp://cds.cern.ch/record/1444600engJezequel, SStewart, GATLAS Distributed Computing Operations: Experience and improvements after 2 full years of data-takingDetectors and Experimental TechniquesThis paper summarizes operational experience and improvements in ATLAS computing infrastructure in 2010 and 2011. ATLAS has had 2 periods of data taking, with many more events recorded in 2011 than in 2010. It ran 3 major reprocessing campaigns. The activity in 2011 was similar to 2010, but scalability issues had to be addressed due to the increase in luminosity and trigger rate. Based on improved monitoring of ATLAS Grid computing, the evolution of computing activities (data/group production, their distribution and grid analysis) over time is presented. The main changes in the implementation of the computing model that will be shown are: the optimization of data distribution over the Grid, according to effective transfer rate and site readiness for analysis; the progressive dismantling of the cloud model, for data distribution and data processing; software installation migration to cvmfs; changing database access to a Frontier/squid infrastructure.ATL-SOFT-SLIDE-2012-134oai:cds.cern.ch:14446002012-04-30
spellingShingle Detectors and Experimental Techniques
Jezequel, S
Stewart, G
ATLAS Distributed Computing Operations: Experience and improvements after 2 full years of data-taking
title ATLAS Distributed Computing Operations: Experience and improvements after 2 full years of data-taking
title_full ATLAS Distributed Computing Operations: Experience and improvements after 2 full years of data-taking
title_fullStr ATLAS Distributed Computing Operations: Experience and improvements after 2 full years of data-taking
title_full_unstemmed ATLAS Distributed Computing Operations: Experience and improvements after 2 full years of data-taking
title_short ATLAS Distributed Computing Operations: Experience and improvements after 2 full years of data-taking
title_sort atlas distributed computing operations: experience and improvements after 2 full years of data-taking
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1444600
work_keys_str_mv AT jezequels atlasdistributedcomputingoperationsexperienceandimprovementsafter2fullyearsofdatataking
AT stewartg atlasdistributedcomputingoperationsexperienceandimprovementsafter2fullyearsofdatataking