CERN Accelerating science

CERN Document Server 29 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 0.71 sekunder. 
1.
EOS software evolution enabling LHC Run 3 / Caffy, Cedric (CERN) ; Amadio, Guilherme (CERN) ; Guenther, Jaroslav (CERN) ; Lekshmanan, Abhishek (CERN) ; Mascetti, Luca (CERN) ; Peters, Andreas (CERN) ; Reis, Manuel (CERN) ; Simon, Michal Kamil (CERN) ; Sindrilaru, Elvin (CERN) ; Smith, David (CERN)
EOS has been the main storage system at CERN for more than a decade, continuously improving in order to meet the ever evolving requirements of the LHC experiments and the whole physics user community. In order to satisfy the demands of LHC Run-3, in terms of storage performance and tradeoff between cost and capacity, EOS was enhanced with a set of new functionalities and features that we will detail in this paper.First of all, we describe the use of erasure coded layouts in a large-scale deployment which enables an efficient use of available storage capacity, while at the same time providing end-users with better throughput when accessing their data. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 01022 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.01022
2.
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
3.
XRootD Client: A robust technology for LHC Run-3 and beyond / Amadio, Guilherme (CERN) ; Caffy, Cedric (CERN) ; Hanushevsky, Andrew Bohdan (SLAC) ; Simon, Michał Kamil (CERN) ; Smith, David (CERN)
During the LHC era the XRootD framework has proven to be a critical component of numerous data management and software defined storage solutions (most importantly EOS, the CERN storage technology used for the LHC experiments), and as such grew into one of the most strategic storage technologies in the High Energy Physics (HEP) community. Over the last year significant developments in the area of the XRootD client have been introduced, making it even more reliable and robust, as well as easier to debug. [...]
2024 - 7 p. - Published in : EPJ Web Conf. 295 (2024) 01056 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.01056
4.
EOS and fixes & low level changes for openssl, xrootd & eosxd / Smith, David (speaker) (CERN)
2024 - 795. HEP Computing; EOS 2024 Workshop External links: Talk details; Event details In : EOS 2024 Workshop
5.
Developments in Performance and Portability for MadGraph5_aMC@NLO / Valassi, Andrea (CERN) ; Childers, Taylor (Argonne (main)) ; Field, Laurence (CERN) ; Hageboeck, Stefan (CERN) ; Hopkins, Walter (Argonne (main)) ; Mattelaer, Olivier (Cathol. U. Louvain (main)) ; Nichols, Nathan (Argonne (main)) ; Roiser, Stefan (CERN) ; Smith, David (CERN)
Event generators simulate particle interactions using Monte Carlo techniques, providing the primary connection between experiment and theory in experimental high energy physics. These software packages, which are the first step in the simulation worflow of collider experiments, represent approximately 5 to 20% of the annual WLCG usage for the ATLAS and CMS experiments. [...]
arXiv:2210.11122.- 2022-10-20 - 6 p. - Published in : PoS: ICHEP2022 (2022) , pp. 212
Fulltext: document - PDF; 2210.11122 - PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.212
6.
Feasibility study of $\Lambda_\mathrm{b}$ measurements in the semileptonic decay channel with the ALICE experiment at the LHC / Smith, Benjamin David (CERN)
This analysis looked at the feasibility of $\Lambda_\mathrm{b}$ hadron production measurements, through the semileptonic decay channel, in Pb-Pb collision data with the ALICE experiment. [...]
CERN-STUDENTS-Note-2022-169.
- 2022
Access to fulltext
7.
Studies of GEANT4 performance for different ATLAS detector geometries and code compilation methods / Marcon, Caterina (Lund U.) ; Elén, Einar (Lund U.) ; Madeira, Jessica Rebecca (Lund U.) ; Morgan, Benjamin (Warwick U.) ; Smirnova, Oxana (Lund U.) ; Smith, David (CERN)
Full detector simulation is known to consume a large proportion of computing resources available to the LHC experiments, and reducing time consumed by simulation will allow for more profound physics studies. There are many avenues to exploit, and in this work we investigate those that do not require changes in the GEANT4 simulation suite. [...]
2021 - 8 p. - Published in : EPJ Web Conf. 251 (2021) 03005 Fulltext: PDF;
In : 25th International Conference on Computing in High-Energy and Nuclear Physics (CHEP), Online, Online, 17 - 21 May 2021, pp.03005
8.
New Ideas in Baryogenesis: A Snowmass White Paper / Elor, Gilly (U. Mainz, PRISMA ; Mainz U.) ; Harz, Julia (Munich, Tech. U.) ; Ipek, Seyda (Carleton U.) ; Shakya, Bibhushan (DESY) ; Blinov, Nikita (Victoria U.) ; Co, Raymond T. (Minnesota U., Theor. Phys. Inst.) ; Cui, Yanou (UC, Riverside) ; Dasgupta, Arnab (Brookhaven) ; Davoudiasl, Hooman (Pittsburgh U.) ; Elahi, Fatemeh (U. Mainz, PRISMA ; Mainz U.) et al.
The Standard Model of Particle Physics cannot explain the observed baryon asymmetry of the Universe. [...]
arXiv:2203.05010.
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eConf - Fulltext
9.
Studies of GEANT4 performance for different ATLAS detector geometries and code compilation methods / Marcon, Caterina (Lund University (SE)) ; Elen, Einar Alfred ; Smirnova, Oxana (Lund University (SE)) ; Morgan, Benjamin (University of Warwick (GB)) ; Smith, David (CERN) /ATLAS Collaboration
Full detector simulation is known to consume a large proportion of computing resources available to the LHC experiments, and reducing time consumed by simulation will allow for more profound physics studies. There are many avenues to exploit, and in this work we investigate those that do not require changes in the GEANT4 simulation suite. [...]
ATL-SOFT-SLIDE-2021-138.- 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
10.
Optimised Lambda Architecture for Monitoring Scientific Infrastructure / Suthakar, Uthayanath (CERN ; Brunel U.) ; Magnoni, Luca (CERN) ; Smith, David Ryan (Brunel U.) ; Khan, Akram (Brunel U.)
Within scientific infrastructuscientists execute millions of computational jobs daily, resulting in the movement of petabytes of data over the heterogeneous infrastructure. Monitoring the computing and user activities over such a complex infrastructure is incredibly demanding. [...]
2021 - 14 p. - Published in : IEEE Trans. Parallel Distrib. Syst. 32 (2021) 1395-1408 Fulltext: PDF;

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