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Optimizing large data transfers for the ALICE experiment in Run 3
/ Weisz, Sergiu (Bucharest, Polytechnic Inst.) ; Grigoras, Costin (CERN) ; Șuiu, Alice-Florența (Bucharest, Polytechnic Inst.) ; Betev, Latchezar (CERN) ; Carabaș, Mihai (Bucharest, Polytechnic Inst.) ; Țăpuș, Nicolae (Bucharest, Polytechnic Inst.)
The physics programme and scope of HEP experiments natu-rally grow with time, thus the computing requirements, both CPU and storage, increase. The 4 large LHC experiments (ALICE, ATLAS, CMS, and LHCb) are undergoing upgrade cycles, for ALICE and LHCb the upgrade was finalized in the years of the LHC long Shutdown 2, 2019–2021, and for ATLAS and CMS it is foreseen to take place in 2026–2028. [...]
2023 - 8 p.
- Published in : 10.1109/RoEduNet60162.2023.10274908
In : 22nd RoEduNet Conference: Networking in Education and Research (RoEduNet2023), Craiova, Romania, 21 - 22 Sep 2023
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Analysis of data integrity and storage quality of a distributed storage system
/ Negru, Adrian Eduard (Bucharest, Polytechnic Inst.) ; Betev, Latchezar (CERN) ; Carabaș, Mihai (Bucharest, Polytechnic Inst.) ; Grigoraș, Costin (CERN) ; Țăpuş, Nicolae (Bucharest, Polytechnic Inst.) ; Weisz, Sergiu (Bucharest, Polytechnic Inst.)
CERN uses the world’s largest scientific computing grid, WLCG, for distributed data storage and processing. Monitoring of the CPU and storage resources is an important and essential element to detect operational issues in its systems, for example in the storage elements, and to ensure their proper and efficient function. [...]
2021 - 11 p.
- Published in : EPJ Web Conf. 251 (2021) 02035
Fulltext: PDF;
In : 25th International Conference on Computing in High-Energy and Nuclear Physics (CHEP), Online, Online, 17 - 21 May 2021, pp.02035
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EPN2EOS Data Transfer System
/ Şuiu, Alice Florenţa (CERN ; Bucharest, Polytechnic Inst.) ; Grigoraş, Costin (CERN) ; Weisz, Sergiu (CERN ; Bucharest, Polytechnic Inst.) ; Betev, Latchezar (CERN)
ALICE is one of the four large experiments at the CERN LHC designed to study the structure and origins of matter in collisions of heavy ions and protons at ultra-relativistic energies. To collect, store, and process the experimental data, ALICE uses hundreds of thousands of CPU cores and more than 400 PB of different types of storage resources.During the LHC Run 3, started in 2022, ALICE is running with an upgraded detector and an entirely new data acquisition system (DAQ), capable of collecting 100 times more events than the previous setup. [...]
2024 - 8 p.
- Published in : EPJ Web Conf. 295 (2024) 01023
Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.01023
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4.
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Client Request Analysis Tool for CERN ALICE Grid Services
/ Margineanu, Cristian (Bucharest, Polytechnic Inst.) ; Grigoras, Costin (Unlisted, CH) ; Carabas, Mihai (Bucharest, Polytechnic Inst.) ; Weisz, Sergiu (Bucharest, Polytechnic Inst.) ; Mihai, Darius (Bucharest, Polytechnic Inst.) ; Mihailescu, Maria-Elena (Bucharest, Polytechnic Inst.) ; Tapus, Nicolae (Bucharest, Polytechnic Inst.)
ALICE is an experiment hosted at the CERN facilities in Geneva. The data collected by the experiment is distributed in multiple geo-locations. [...]
2020 - 6 p.
- Published in : 10.1109/CDS49703.2020.00097
In : 2020 International Conference on Computing and Data Science (CDS), Stanford, CA, USA, 1 - 2 Aug 2020, pp.462-467
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5.
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FPGA implementation of RDMA for ATLAS readout with FELIX at high luminosity LHC
/ Vasile, M (Bucharest, IFIN-HH) ; Martoiu, S (Bucharest, IFIN-HH) ; Boukadida, N (NIKHEF, Amsterdam) ; Antonescu, M (Bucharest, Polytechnic Inst.) ; Ulmamei, A (Bucharest, Polytechnic Inst.) ; Stoicea, G (Bucharest, IFIN-HH) ; Hobincu, R (Bucharest, Polytechnic Inst.) ; Iordache, C (Bucharest, Polytechnic Inst.)
/ATLAS TDAQ Collaboration
The FELIX system is used as an interface between front-end electronics and commodity hardware in the server farm. FELIX is using RDMA through RoCE to transmit data from its host servers to the software readout driver using off-the-shelf networking equipment. [...]
2022 - 7 p.
- Published in : JINST 17 (2022) C05022
In : TWEPP 2021 Topical Workshop on Electronics for Particle Physics, Online, Online, 20 - 24 Sep 2021, pp.C05022
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6.
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Calibration and Conditions Database of the ALICE experiment in Run 3
/ Dosaru, Daniel-Florin (Bucharest, Polytechnic Inst.) ; Grigoraş, Costin (CERN) ; Mucha, Rafał (AGH-UST, Cracow) ; Trzebuniak, Michał (AGH-UST, Cracow)
The ALICE experiment at CERN has undergone a substantial detector, readout and software upgrade for the LHC Run 3. A signature part of the upgrade is the triggerless detector readout, which necessitates a real time lossy data compression from 1.1 TB/s to 100 GB/s performed on a GPU/CPU cluster of 250 nodes. [...]
2024 - 8 p.
- Published in : EPJ Web Conf. 295 (2024) 01011
Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.01011
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