Computing activities at the Spanish Tier-1 and Tier-2s for the ATLAS experiment towards the LHC Run3 and High-Luminosity periods

Santiago González de la Hoz; Carles Acosta-Silva; Javier Aparisi Pozo; Jose del Peso; Álvaro Fernández Casani; José Flix Molina; Esteban Fullana Torregrosa; Carlos García Montoro; Julio Lozano Bahilo; Almudena Montiel; Andrés Pacheco Pages; Javier Sánchez Martínez; José Salt Cairols; Aresh Vedaee

doi:10.1051/epjconf/202024507027

All issues

Volume 245 (2020)

EPJ Web Conf., 245 (2020) 07027

Abstract

Open Access

Issue		EPJ Web Conf. Volume 245, 2020 24^th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2019)


Article Number		07027
Number of page(s)		7
Section		7 - Facilities, Clouds and Containers
DOI		https://doi.org/10.1051/epjconf/202024507027
Published online		16 November 2020

EPJ Web of Conferences 245, 07027 (2020)
https://doi.org/10.1051/epjconf/202024507027

Computing activities at the Spanish Tier-1 and Tier-2s for the ATLAS experiment towards the LHC Run3 and High-Luminosity periods

Santiago González de la Hoz¹^*, Carles Acosta-Silva²^,3, Javier Aparisi Pozo¹, Jose del Peso⁴, Álvaro Fernández Casani¹, José Flix Molina³^,5, Esteban Fullana Torregrosa¹, Carlos García Montoro¹, Julio Lozano Bahilo¹, Almudena Montiel⁴, Andrés Pacheco Pages²^,3, Javier Sánchez Martínez¹, José Salt Cairols¹ and Aresh Vedaee²^,3 on behalf of the ATLAS Collaboration

¹ Instituto de Física Corpuscular (IFIC), centro mixto CSIC-Universitat de València, Paterna, Spain
² Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra (Barcelona), Spain
³ Port d’Informació Científica (PIC), Campus UAB, 08913 Bellaterra (Cerdanyola del Vallès), Spain
⁴ Departamento de Física Teórica y CIAFF, Universidad Autónoma de Madrid, Madrid, Spain
⁵ Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain

Published online: 16 November 2020

Abstract

The ATLAS Spanish Tier-1 and Tier-2s have more than 15 years of experience in the deployment and development of LHC computing components and their successful operations. The sites are already actively participating in, and even coordinating, emerging R&D computing activities and developing new computing models needed for the Run3 and HighLuminosity LHC periods. In this contribution, we present details on the integration of new components, such as High Performance Computing resources to execute ATLAS simulation workflows. The development of new techniques to improve efficiency in a cost-effective way, such as storage and CPU federations is shown in this document. Improvements in data organization, management and access through storage consolidations (“data-lakes”), the use of data caches, and improving experiment data catalogs, like Event Index, are explained in this proceeding. The design and deployment of new analysis facilities using GPUs together with CPUs and techniques like Machine Learning will also be presented. Tier-1 and Tier-2 sites, are, and will be, contributing to significant R&D in computing, evaluating different models for improving performance of computing and data storage capacity in the High-Luminosity LHC era.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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