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Multi-threaded ATLAS simulation on Intel Knights Landing processors

The Knights Landing (KNL) release of the Intel Many Integrated Core (MIC) Xeon Phi line of processors is a potential game changer for HEP computing. With 72 cores and deep vector registers, the KNL cards promise significant performance benefits for highly-parallel, compute-heavy applications. Cori,...

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Autores principales: Farrell, Steven, Calafiura, Paolo, Leggett, Charles, Tsulaia, Vakhtang, Dotti, Andrea
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1742-6596/898/4/042012
http://cds.cern.ch/record/2242857
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author Farrell, Steven
Calafiura, Paolo
Leggett, Charles
Tsulaia, Vakhtang
Dotti, Andrea
author_facet Farrell, Steven
Calafiura, Paolo
Leggett, Charles
Tsulaia, Vakhtang
Dotti, Andrea
author_sort Farrell, Steven
collection CERN
description The Knights Landing (KNL) release of the Intel Many Integrated Core (MIC) Xeon Phi line of processors is a potential game changer for HEP computing. With 72 cores and deep vector registers, the KNL cards promise significant performance benefits for highly-parallel, compute-heavy applications. Cori, the newest supercomputer at the National Energy Research Scientific Computing Center (NERSC), was delivered to its users in two phases with the first phase online at the end of 2015 and the second phase now online at the end of 2016. Cori Phase 2 is based on the KNL architecture and contains over 9000 compute nodes with 96GB DDR4 memory. ATLAS simulation with the multithreaded Athena Framework (AthenaMT) is a good potential use-case for the KNL architecture and supercomputers like Cori. ATLAS simulation jobs have a high ratio of CPU computation to disk I/O and have been shown to scale well in multi-threading and across many nodes. In this paper we will give an overview of the ATLAS simulation application with details on its multi-threaded design. Then, we will present a performance analysis of the application on KNL devices and compare it to a traditional x86 platform to demonstrate the capabilities of the architecture and evaluate the benefits of utilizing KNL platforms like Cori for ATLAS production.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-22428572019-10-15T15:19:23Zdoi:10.1088/1742-6596/898/4/042012http://cds.cern.ch/record/2242857engFarrell, StevenCalafiura, PaoloLeggett, CharlesTsulaia, VakhtangDotti, AndreaMulti-threaded ATLAS simulation on Intel Knights Landing processorsParticle Physics - ExperimentThe Knights Landing (KNL) release of the Intel Many Integrated Core (MIC) Xeon Phi line of processors is a potential game changer for HEP computing. With 72 cores and deep vector registers, the KNL cards promise significant performance benefits for highly-parallel, compute-heavy applications. Cori, the newest supercomputer at the National Energy Research Scientific Computing Center (NERSC), was delivered to its users in two phases with the first phase online at the end of 2015 and the second phase now online at the end of 2016. Cori Phase 2 is based on the KNL architecture and contains over 9000 compute nodes with 96GB DDR4 memory. ATLAS simulation with the multithreaded Athena Framework (AthenaMT) is a good potential use-case for the KNL architecture and supercomputers like Cori. ATLAS simulation jobs have a high ratio of CPU computation to disk I/O and have been shown to scale well in multi-threading and across many nodes. In this paper we will give an overview of the ATLAS simulation application with details on its multi-threaded design. Then, we will present a performance analysis of the application on KNL devices and compare it to a traditional x86 platform to demonstrate the capabilities of the architecture and evaluate the benefits of utilizing KNL platforms like Cori for ATLAS production.ATL-SOFT-PROC-2017-017oai:cds.cern.ch:22428572017-01-24
spellingShingle Particle Physics - Experiment
Farrell, Steven
Calafiura, Paolo
Leggett, Charles
Tsulaia, Vakhtang
Dotti, Andrea
Multi-threaded ATLAS simulation on Intel Knights Landing processors
title Multi-threaded ATLAS simulation on Intel Knights Landing processors
title_full Multi-threaded ATLAS simulation on Intel Knights Landing processors
title_fullStr Multi-threaded ATLAS simulation on Intel Knights Landing processors
title_full_unstemmed Multi-threaded ATLAS simulation on Intel Knights Landing processors
title_short Multi-threaded ATLAS simulation on Intel Knights Landing processors
title_sort multi-threaded atlas simulation on intel knights landing processors
topic Particle Physics - Experiment
url https://dx.doi.org/10.1088/1742-6596/898/4/042012
http://cds.cern.ch/record/2242857
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