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1.
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I/O performance studies of analysis workloads on production and dedicated resources at CERN
/ Sciabà, Andrea (CERN) ; Blomer, Jakob (CERN) ; Canal, Philippe (Fermilab) ; Duellmann, Dirk (CERN) ; Guiraud, Enrico (CERN) ; Naumann, Axel (CERN) ; Padulano, Vincenzo Eduardo (CERN) ; Panzer-Steindel, Bernd (CERN) ; Peters, Andreas (CERN) ; Schulz, Markus (CERN) et al.
The recent evolutions of the analysis frameworks and physics data formats of the LHC experiments provide the opportunity of using central analysis facilities with a strong focus on interactivity and short turnaround times, to complement the more common distributed analysis on the Grid. In order to plan for such facilities, it is essential to know in detail the performance of the combination of a given analysis framework, of a specific analysis and of the installed computing and storage resources. [...]
FERMILAB-CONF-24-0689-CSAID.-
2024 - 9 p.
- Published in : EPJ Web Conf. 295 (2024) 07025
Fulltext: 9b80f56360993741399aef5f272f8af7 - PDF; document - PDF; External link: Fermilab Library Server
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.07025
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2.
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Overcoming obstacles to IPv6 on WLCG
/ Babik, Marian (CERN) ; Bly, Martin (Rutherford) ; Buraglio, Nick (LBL, Berkeley) ; Chown, Tim (JISC) ; Christidis, Dimitrios (CERN) ; Chudoba, Jiri (Prague, Inst. Phys.) ; DeMar, Phil (Fermilab) ; Molina, José Flix (Madrid, CIEMAT) ; Grigoras, Costin (CERN) ; Hoeft, Bruno (KIT, Karlsruhe) et al.
The transition of the Worldwide Large Hadron Collider Computing Grid (WLCG) storage services to dual-stack IPv6/IPv4 is almost complete; all Tier-1 and 94% of Tier-2 storage are IPv6 enabled. While most data transfers now use IPv6, a significant number of IPv4 transfers still occur even when both endpoints support IPv6. [...]
FERMILAB-CONF-22-902-SCD.-
2024 - 9 p.
- Published in : EPJ Web Conf. 295 (2024) 07036
Fulltext: d54d88c3314bc3339be13066a6bc1224 - PDF; document - PDF; External link: Fermilab Library Server
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.07036
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3.
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HEPScore: A new CPU benchmark for the WLCG
/ Giordano, Domenico (CERN) ; Barbet, Jean-Michel (SUBATECH, Nantes) ; Boccali, Tommaso (INFN, Pisa) ; Borge, Gonzalo Menéndez (CERN) ; Hollowell, Christopher (Brookhaven) ; Innocente, Vincenzo (CERN) ; Lampl, Walter (Arizona U.) ; Michelotto, Michele (INFN, Padua) ; Meinhard, Helge (CERN) ; Ondris, Ladislav (CERN) et al.
HEPScore is a new CPU benchmark created to replace the HEPSPEC06 benchmark that is currently used by the WLCG for procurement, computing resource pledges and performance studies. The development of the new benchmark, based on HEP applications or workloads, has involved many contributions from software developers, data analysts, experts of the experiments, representatives of several WLCG computing centres, as well as the WLCG HEPScore Deployment Task Force. [...]
arXiv:2306.08118.-
2024-05 - 7 p.
- Published in : EPJ Web Conf. 295 (2024) 07024
Fulltext: document - PDF; 2306.08118 - PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.07024
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4.
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Second Analysis Ecosystem Workshop Report
/ Aly, Mohamed (Manchester U.) ; Burzynski, Jackson (Simon Fraser U.) ; Cardwell, Bryan (Virginia U.) ; Craik, Daniel C. (Zurich U.) ; van Daalen, Tal (Washington U., Seattle) ; Dado, Tomas (Dortmund U.) ; Das, Ayanabha (Prague, Tech. U.) ; Delgado Peris, Antonio (Madrid, CIEMAT) ; Doglioni, Caterina (Manchester U.) ; Elmer, Peter (Princeton U.) et al.
The second workshop on the HEP Analysis Ecosystem took place 23-25 May 2022 at IJCLab in Orsay, to look at progress and continuing challenges in scaling up HEP analysis to meet the needs of HL-LHC and DUNE, as well as the very pressing needs of LHC Run 3 analysis. [...]
arXiv:2212.04889 ; HSF-DOC-2022-02 ; FERMILAB-CONF-22-955-PPD.
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2022. - 27 p.
Fermilab Library Server - Fulltext - Fulltext
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5.
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EOS and XCache data access performance for LHC analysis at CERN
/ Sciabà, Andrea (speaker) (CERN)
Physics analysis is done at CERN in several different ways, using both interactive and batch resources and EOS for data storage. In order to understand if and how the CERN computer centre should change the way analysis is supported for Run3, we performed several performance studies on two fronts: measuring the performance and utilisation levels of EOS with respect to the current analysis workloads, and looking at the performance of different storage configurations, including SSD-based and HDD-based XCache instances, with respect to specific, I/O intensive analysis workloads from ATLAS and CMS. [...]
2022 - 1606.
HEP Computing; EOS workshop
External links: Talk details; Event details
In : EOS workshop
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6.
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HEPiX Benchmarking Solution for WLCG Computing Resources
/ Giordano, Domenico (CERN) ; Alef, Manfred (KIT, Karlsruhe, TTP) ; Atzori, Luca (CERN) ; Barbet, Jean-Michel (SUBATECH, Nantes) ; Datskova, Olga (CERN) ; Girone, Maria (CERN) ; Hollowell, Christopher (Brookhaven Natl. Lab.) ; Javurkova, Martina (Massachusetts U., Amherst) ; Maganza, Riccardo (CERN) ; Medeiros, Miguel F (CERN) et al.
The HEPiX Benchmarking Working Group has developed a framework to benchmark the performance of a computational server using the software applications of the High Energy Physics (HEP) community. This framework consists of two main components, named HEP-Workloads and HEPscore. [...]
2021 - 11 p.
- Published in : Comput. Softw. Big Sci. 5 (2021) 28
Fulltext: PDF;
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7.
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Methods of Data Popularity Evaluation in the ATLAS Experiment at the LHC
/ Grigoryeva, Maria (M.V. Lomonosov Moscow State University (RU)) ; Chuchuk, Olga (Université Côte d'Azur (FR)) ; Sciaba, Andrea (CERN) ; Klimentov, Alexei (Brookhaven National Laboratory (US)) ; Tretyakov, Evgeny (National Research Nuclear University MEPhI (RU)) ; Di Girolamo, Alessandro (CERN) ; Beermann, Thomas (Bergische Universitaet Wuppertal (DE)) ; Schulz, Markus (CERN) ; Lassnig, Mario (CERN)
/ATLAS Collaboration
The ATLAS Experiment at the LHC generates petabytes of data that is distributed among 160 computing sites all over the world and is processed continuously by various central production and user analysis tasks. The popularity of data is typically measured as the number of accesses and plays an important role in resolving data management issues: deleting, replicating, moving between tapes, disks and caches. [...]
ATL-SOFT-SLIDE-2021-146.-
Geneva : CERN, 2021 - 10 p.
Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 25th International Conference on Computing in High-Energy and Nuclear Physics (CHEP), Online, Online, 17 - 21 May 2021
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8.
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New developments in cost modeling for the LHC computing
/ Biscarat, Catherine (LPSC, Grenoble) ; Boccali, Tommaso (INFN, Pisa) ; Bonacorsi, Daniele (INFN, Bologna) ; Bozzi, Concezio (CERN ; Ferrara U.) ; Costanzo, Davide (Sheffield U.) ; Duellmann, Dirk (CERN) ; Elmsheuser, Johannes (Brookhaven Natl. Lab.) ; Fede, Eric (CC, Villeurbanne) ; Flix Molina, José (Madrid, CIEMAT) ; Giordano, Domenico (CERN) et al.
The increase in the scale of LHC computing during Run 3 and Run 4 (HL-LHC) will certainly require radical changes to the computing models and the data processing of the LHC experiments. The working group established by WLCG and the HEP Software Foundation to investigate all aspects of the cost of computing and how to optimise them has continued producing results and improving our understanding of this process. [...]
2020 - 9 p.
- Published in : EPJ Web Conf. 245 (2020) 03014
Fulltext from publisher: PDF;
In : 24th International Conference on Computing in High Energy and Nuclear Physics, Adelaide, Australia, 4 - 8 Nov 2019, pp.03014
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9.
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IPv6-only networking on WLCG
/ Babik, Marian (CERN) ; Bly, Martin (Rutherford) ; Chown, Tim ; Christidis, Dimitrios (Texas U., Arlington (main)) ; Chudoba, Jiři ; Condurache, Catalin ; Finnern, Thomas ; Froy, Terry ; Grigoras, Costin ; Hafeez, Kashif et al.
The use of IPv6 on the general Internet continues to grow. The transition of the Worldwide Large Hadron Collider Computing Grid (WLCG) central and storage services to dual-stack IPv6/IPv4 is progressing well, thus enabling the use of IPv6-only CPU resources as agreed by the WLCG Management Board and presented by us at earlier CHEP conferences. [...]
2020 - 7 p.
- Published in : EPJ Web Conf. 245 (2020) 07045
Fulltext from publisher: PDF;
In : 24th International Conference on Computing in High Energy and Nuclear Physics, Adelaide, Australia, 4 - 8 Nov 2019, pp.07045
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10.
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