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Adapting ATLAS@Home to trusted and semi-trusted resources

ATLAS@Home is a volunteer computing project which enables members of the public to contribute computing power to run simulations of the ATLAS experiment at CERN. The computing resources provided to ATLAS@Home increasingly come not only from traditional volunteers, but from data centres or office com...

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Autores principales: Cameron, David, Garonne, Vincent, Millar, Paul, Sun, Shaojun, Wu, Wenjing
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:https://dx.doi.org/10.1051/epjconf/202024503027
http://cds.cern.ch/record/2709501
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author Cameron, David
Garonne, Vincent
Millar, Paul
Sun, Shaojun
Wu, Wenjing
author_facet Cameron, David
Garonne, Vincent
Millar, Paul
Sun, Shaojun
Wu, Wenjing
author_sort Cameron, David
collection CERN
description ATLAS@Home is a volunteer computing project which enables members of the public to contribute computing power to run simulations of the ATLAS experiment at CERN. The computing resources provided to ATLAS@Home increasingly come not only from traditional volunteers, but from data centres or office computers at institutes associated to ATLAS. The design of ATLAS@Home was built around not giving out sensitive credentials to volunteers, which means that a sandbox is needed to bridge data transfers between trusted and untrusted domains. As the scale of ATLAS@Home increases, this sandbox becomes a potential data management bottleneck. This paper explores solutions to this problem based on relaxing the constraints of sending credentials to trusted volunteers, allowing direct data transfer to grid storage and avoiding the intermediate sandbox. Fully trusted resources such as grid worker nodes can run with full access to grid storage, whereas semi-trusted resources such as student desktops can be provided with ``macaroons'': time-limited access tokens which can only be used for specific files. The steps towards implementing these solutions as well as initial results with real ATLAS simulation tasks are discussed along with the experience gained so far and the next steps in the project.
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publishDate 2020
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spelling cern-27095012021-03-22T22:08:54Zdoi:10.1051/epjconf/202024503027http://cds.cern.ch/record/2709501engCameron, DavidGaronne, VincentMillar, PaulSun, ShaojunWu, WenjingAdapting ATLAS@Home to trusted and semi-trusted resourcesParticle Physics - ExperimentATLAS@Home is a volunteer computing project which enables members of the public to contribute computing power to run simulations of the ATLAS experiment at CERN. The computing resources provided to ATLAS@Home increasingly come not only from traditional volunteers, but from data centres or office computers at institutes associated to ATLAS. The design of ATLAS@Home was built around not giving out sensitive credentials to volunteers, which means that a sandbox is needed to bridge data transfers between trusted and untrusted domains. As the scale of ATLAS@Home increases, this sandbox becomes a potential data management bottleneck. This paper explores solutions to this problem based on relaxing the constraints of sending credentials to trusted volunteers, allowing direct data transfer to grid storage and avoiding the intermediate sandbox. Fully trusted resources such as grid worker nodes can run with full access to grid storage, whereas semi-trusted resources such as student desktops can be provided with ``macaroons'': time-limited access tokens which can only be used for specific files. The steps towards implementing these solutions as well as initial results with real ATLAS simulation tasks are discussed along with the experience gained so far and the next steps in the project.ATL-SOFT-PROC-2020-011oai:cds.cern.ch:27095012020-02-14
spellingShingle Particle Physics - Experiment
Cameron, David
Garonne, Vincent
Millar, Paul
Sun, Shaojun
Wu, Wenjing
Adapting ATLAS@Home to trusted and semi-trusted resources
title Adapting ATLAS@Home to trusted and semi-trusted resources
title_full Adapting ATLAS@Home to trusted and semi-trusted resources
title_fullStr Adapting ATLAS@Home to trusted and semi-trusted resources
title_full_unstemmed Adapting ATLAS@Home to trusted and semi-trusted resources
title_short Adapting ATLAS@Home to trusted and semi-trusted resources
title_sort adapting atlas@home to trusted and semi-trusted resources
topic Particle Physics - Experiment
url https://dx.doi.org/10.1051/epjconf/202024503027
http://cds.cern.ch/record/2709501
work_keys_str_mv AT camerondavid adaptingatlashometotrustedandsemitrustedresources
AT garonnevincent adaptingatlashometotrustedandsemitrustedresources
AT millarpaul adaptingatlashometotrustedandsemitrustedresources
AT sunshaojun adaptingatlashometotrustedandsemitrustedresources
AT wuwenjing adaptingatlashometotrustedandsemitrustedresources