CERN Accelerating science

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1.
Performance of Heterogeneous Algorithm Scheduling in CMSSW / Bocci, Andrea (CERN) ; Jones, Christopher Duncan (Fermilab) ; Kortelainen, Matti Johannes (Fermilab) /CMS Collaboration
The CMS experiment started to utilize Graphics Processing Units (GPU) to accelerate the online reconstruction and event selection running on its High Level Trigger (HLT) farm in the 2022 data taking period. The projections of the HLT farm to the High-Luminosity LHC foresee a significant use of compute accelerators in the LHC Run 4 and onwards in order to keep the cost, size, and power budget of the farm under control. [...]
CMS-CR-2023-132.- Geneva : CERN, 2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 11017 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023
2.
Development of the CMS detector for the CERN LHC Run 3 / CMS Collaboration
Since the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. [...]
arXiv:2309.05466; CMS-PRF-21-001; CERN-EP-2023-136; CMS-PRF-21-001-003.- Geneva : CERN, 2024-05-23 - 257 p. - Published in : JINST 19 (2024) P05064 Fulltext: PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList
In : The Large Hadron Collider and The Experiments for Run 3
3.
Stitched Together Transitioning CMS to a Hierarchical Threaded Framework / Jones, Christopher Duncan (Fermilab) ; Sexton-Kennedy, Elizabeth (Fermilab) /CMS Collaboration
Modern computing hardware is transitioning from using a single high frequency complicated computing core to many lower frequency simpler cores. As part of that transition, hardware manufacturers are urging developers to exploit concurrency in their programs via operating system threads. [...]
CMS-CR-2013-393.- Geneva : CERN, 2013 - p. Fulltext: PDF;
In : 20th International Conference on Computing in High Energy and Nuclear Physics 2013, Amsterdam, Netherlands, 14 - 18 Oct 2013
4.
Using OpenMP for HEP Framework Algorithm Scheduling / Jones, Christopher Duncan (Fermilab) /CMS Collaboration
The OpenMP standard is the primary mechanism used at high performance computing facilities to allow intra-process parallelization. In contrast, many HEP specific software packages (such as CMSSW, GaudiHive, and ROOT) make use of Intels Threading Building Blocks (TBB) library to accomplish the same goal. [...]
CMS-CR-2020-060.- Geneva : CERN, 2020 - 8 p. Fulltext: PDF;
In : 24th International Conference on Computing in High Energy and Nuclear Physics, Adelaide, Australia, 4 - 8 Nov 2019
5.
Implementing Concurrent Non-Event Transitions in CMS / Jones, Christopher Duncan (Fermilab) /CMS Collaboration
Since the beginning of the LHC Run 2 in 2016 the CMS data processing framework, CMSSW, has been running with multiple threads during production of data and simulation via the use of Intels Thread Building Blocks (TBB) library. The TBB library utilizes tasks as concurrent units of work. [...]
CMS-CR-2018-277; FERMILAB-CONF-19-071-CD-CMS.- Geneva : CERN, 2018 - 7 p. Fulltext: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018
6.
Explorations of the Viability of ARM and Xeon Phi for Physics Processing / Abdurachmanov, David (Vilnius U.) ; Arya, Kapil (Northeastern U., Comp. Sci. Coll.) ; Bendavid, Josh (CERN) ; Boccali, Tommaso (INFN, Pisa ; Pisa, Scuola Normale Superiore ; Pisa U.) ; Cooperman, Gene (Northeastern U., Comp. Sci. Coll. ; Northeastern U.) ; Dotti, Andrea (SLAC ; CERN ; INFN, Pisa ; Pisa U.) ; Elmer, Peter (Princeton U. ; Wisconsin U., Madison) ; Eulisse, Giulio (Fermilab) ; Giacomini, Francesco (INFN, CNAF) ; Jones, Christopher D. (Fermilab ; Cambridge U.) et al.
We report on our investigations into the viability of the ARM processor and the Intel Xeon Phi co-processor for scientific computing. We describe our experience porting software to these processors and running benchmarks using real physics applications to explore the potential of these processors for production physics processing..
arXiv:1311.1001.- 2014 - 7 p. - Published in : J. Phys.: Conf. Ser. 513 (2014) 052008 Fulltext: arXiv:1311.1001 - PDF; fermilab-conf-14-057-cms - PDF; fermilab-conf-14-056-cms - PDF; External link: FERMILABCONF
In : 20th International Conference on Computing in High Energy and Nuclear Physics 2013, Amsterdam, Netherlands, 14 - 18 Oct 2013, pp.052008
7.
A New Boson with a Mass of 125 GeV Observed with the CMS Experiment at the Large Hadron Collider / CMS Collaboration
The Higgs boson was postulated nearly five decades ago within the framework of the standard model of particle physics and has been the subject of numerous searches at accelerators around the world. Its discovery would verify the existence of a complex scalar field thought to give mass to three of the carriers of the electroweak force—the W+, W–, and Z0 bosons—as well as to the fundamental quarks and leptons. [...]
Geneva : CERN, 2012 - 16 p. - Published in : Science 338 (2012) 1569-1575 Preprint: PDF; External link: Supplementary material
In : Breakthrough of the year
8.
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC / CMS Collaboration
Results are presented from searches for the standard model Higgs boson in proton-proton collisions at $\sqrt{s}$=7 and 8 TeV in the CMS experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.1 inverse femtobarns at 7 TeV and 5.3 inverse femtobarns at 8 TeV. The search is performed in five decay modes: $\gamma\gamma$, ZZ, WW, $\tau^+ \tau^-$, and $b\bar{b}$. [...]
arXiv:1207.7235; CMS-HIG-12-028; CERN-PH-EP-2012-220; CMS-HIG-12-028; CERN-PH-EP-2012-220.- Geneva : CERN, 2012-08-17 - 32 p. - Published in : Phys. Lett. B 716 (2012) 30-61 Elsevier Open Access article: PDF; Fulltext: PDF; External links: Press Release; Interactions.org article; DOE Science Highlight
In : Higgs booklet, pp.30
9.
Multicore-aware applications in CMS / Jones, Christopher Duncan (Fermilab) ; Elmer, Peter (Princeton U.) ; Sexton, Liz (Fermilab) ; Green, Chris (Fermilab) ; Baldooci, Andrew (Fermilab) /CMS Collaboration
One of the significant trends of recent years has been the move towards multicore CPU's with ever increasing numbers of cores. CMS has been preparing multicore aware applications that rely on "multi-processing", namely the sharing of memory between processes forked from a single parent process. [...]
CMS-CR-2010-305.- Geneva : CERN, 2010 - 7 p. Fulltext: PDF;
In : Conference on Computing in High Energy and Nuclear Physics 2010, Taipei, Taiwan, 18 - 22 Oct 2010
10.
Event Displays for the Visualization of CMS Events / Jones, Christopher Duncan (Fermilab) /CMS Collaboration
During the last year the CMS experiment engaged in consolidation of its existing event display programs. The core of the new system is based on the Fireworks event display program which was by-design directly integrated with the CMS Event Data Model (EDM) and the light version of the software framework (FWLite). [...]
CMS-CR-2010-299.- Geneva : CERN, 2010 - 7 p. Fulltext: PDF;
In : Conference on Computing in High Energy and Nuclear Physics 2010, Taipei, Taiwan, 18 - 22 Oct 2010

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297 Jones, C
1 Jones, C A
327 Jones, C D
35 Jones, C E
2 Jones, C G
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2 Jones, C J
6 Jones, C K
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15 Jones, C L
29 Jones, C M
1 Jones, C M S
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286 Jones, C R
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676 Jones, Christopher
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1 Jones, Christopher D.
10 Jones, Christopher Duncan
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