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Updates on usage of the Czech national HPC center
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SYSNO ASEP 0548761 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Updates on usage of the Czech national HPC center Author(s) Svatoš, Michal (FZU-D) RID, ORCID
Chudoba, Jiří (FZU-D) RID, ORCID
Vokáč, P. (CZ)Number of authors 3 Article number 02008 Source Title EPJ Web of Conferences, 251. - Les Ulis : EDP Sciences, 2021 / Biscarat C. ; Campana S. ; Hegner B. ; Roiser S. ; Rovelli C.I. ; Stewart G.A. Number of pages 7 s. Publication form Online - E Action International Conference on Computing in High Energy and Nuclear Physics (CHEP 2021) /25./ Event date 17.05.2021 - 21.05.2021 VEvent location Virtual Event Country CH - Switzerland Event type WRD Language eng - English Country FR - France Keywords HPC ; computing Subject RIV JD - Computer Applications, Robotics OECD category Automation and control systems R&D Projects EF18_046/0016013 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LTT17018 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2018104 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_013/0001404 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 DOI 10.1051/epjconf/202125102008 Annotation The distributed computing of the ATLAS experiment at LHC has used computing resources of the Czech national HPC center IT4Innovations for several years. The submission system is based on ARC-CEs installed at the Czech Tier2 site (praguelcg2). Recent improvements of this system will be discussed here. First, there was a migration of the ARC-CE from version 5 to 6 which improves the reliability and scalability. A shared filesystem built on top of sshfs 3.7 no longer represents performance bottleneck. It provided an order of magnitude better transfer performance. New Singularity containers with full software stack can easily fit default resource limits on the IT4I cluster filesystem. A new submission system, allowing sequential running of payloads in one job, was set and adapted to HPC’s environment, improving usage on worker nodes with very high number of cores. Overall, the whole infrastructure provides significant contribution to resources provided by praguelcg2. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://www.epj-conferences.org/articles/epjconf/pdf/2021/05/epjconf_chep2021_02008.pdf
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