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1.
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Electromagnetic physics vectorization in the GeantV transport framework
/ Amadio, Guilherme (CERN) ; Ananya (CERN) ; Apostolakis, John (CERN) ; Bandieramonte, Marilena (CERN ; U. Pittsburgh (main)) ; Behera, S P (Bhabha Atomic Res. Ctr.) ; Bhattacharyya, Abhijit (Bhabha Atomic Res. Ctr.) ; Brun, Rene (CERN) ; Canal, Philippe (Fermilab) ; Carminati, Federico (CERN) ; Cosmo, Gabriele (CERN) et al.
The development of the GeantV Electromagnetic (EM) physics package has evolved following two necessary paths towards code modernization. A first phase required the revision of the main electromagnetic physics models and their implementation. [...]
2019 - 11 p.
- Published in : EPJ Web Conf. 214 (2019) 02031
Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.02031
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2.
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A vectorization approach for multifaceted solids in VecGeom
/ Apostolakis, John (CERN) ; Cosmo, Gabriele (CERN) ; Gheata, Andrei (CERN) ; Gheata, Mihaela (CERN ; Bucharest, Inst. Space Science) ; Sehgal, Raman (Bhabha Atomic Res. Ctr.) ; Wenzel, Sandro (CERN)
/VecGeom team
VecGeom [1] is a multi-purpose geometry library targeting the optimisation of the 3D-solids’ algorithms used extensively in particle transport and tracking applications. The implementations of these algorithms are templated on the input data type and are vectorised based on the VecCore [2] abstraction library in case of multiple inputs in a SIMD vector. [...]
2019 - 7 p.
- Published in : EPJ Web Conf. 214 (2019) 02025
Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.02025
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3.
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Recent progress with the top to bottom approach to vectorization in GeantV
/ Amadio, Guilherme (CERN) ; Ananya ; Apostolakis, John (CERN) ; Bandieramonte, Marilena (CERN ; U. Pittsburgh (main)) ; Behera, Shiba (Bhabha Atomic Res. Ctr.) ; Bhattacharyya, Abhijit (Bhabha Atomic Res. Ctr.) ; Brun, René (CERN) ; Canal, Philippe (Fermilab) ; Carminati, Federico (CERN) ; Cosmo, Gabriele (CERN) et al.
SIMD acceleration can potentially boost by factors the application throughput. Achieving efficient SIMD vectorization for scalar code with complex data flow and branching logic, goes however way beyond breaking some loop dependencies and relying on the compiler. [...]
2019 - 8 p.
- Published in : EPJ Web Conf. 214 (2019) 02007
Fulltext from publisher: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018, pp.02007
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4.
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GE1/1 upgrade of CMS detector at LHC facility at CERN
/ Sehgal, S T (Bhabha Atomic Res. Ctr.) ; Mulmule, D (Bhabha Atomic Res. Ctr. ; HBNI, Mumbai) ; Netrakanti, P K (Bhabha Atomic Res. Ctr.) ; Jha, V (Bhabha Atomic Res. Ctr.) ; Mishra, D K (Bhabha Atomic Res. Ctr.) ; Sehgal, R (Bhabha Atomic Res. Ctr.) ; Pant, L M (Bhabha Atomic Res. Ctr. ; HBNI, Mumbai)
2017 - 2 p.
- Published in : DAE Symp. Nucl. Phys.: 62 (2017) , pp. 1146-1147
Fulltext: PDF;
In : 62nd DAE-BRNS Symposium on Nuclear Physics, Patiala, India, 20 - 24 Dec 2017, pp.1146-1147
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5.
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GeantV alpha release
/ Amadio, G (CERN) ; Ananya, (IIT, Roorkee) ; Apostolakis, J (CERN) ; Bandieramonte, M (CERN) ; Behera, S (Bhabha Atomic Res. Ctr.) ; Bhattacharyya, A (Bhabha Atomic Res. Ctr.) ; Brun, R (CERN) ; Canal, P (Fermilab) ; Carminati, F (CERN) ; Cosmo, G (CERN) et al.
In the fall 2016, GeantV went through a thorough community evaluation of the project status and of its strategy for sharing the R&D; results with the LHC experiments and with the HEP simulation community in general. Following this discussion, GeantV has engaged onto an ambitious 2-year road-path aiming to deliver a beta version that has most of the final design and several performance features of the final product, partially integrated with some of the experiment’s frameworks. [...]
2018 - 7 p.
- Published in : J. Phys.: Conf. Ser. 1085 (2018) 032037
Fulltext: PDF;
In : 18th International Workshop on Advanced Computing and Analysis Techniques in Physics Research, Seattle, WA, USA, 21 - 25 Aug 2017, pp.032037
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6.
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GeantV: from CPU to accelerators
/ Canal, Philippe (Fermilab) ; Carminati, Federico (CERN) ; Gheata, Andrei (CERN ; NIKHEF, Amsterdam) ; Wenzel, Sandro (Leipzig U.) ; Jun, Soon Yung (Unlisted) ; Amadio, Guilherme (Unlisted) ; Apostolakis, John (CERN) ; Arora, Anmol (Unlisted) ; Bandieramonte, Marilena (Unlisted) ; Bhattacharyya, Abhijit (Calcutta U.) et al.
SISSA, 2016 - 10 p.
- Published in : PoS ICHEP2016 (2016) 177
Fulltext: PDF; External link: PoS server
In : 38th International Conference on High Energy Physics, Chicago, IL, USA, 03 - 10 Aug 2016, pp.177
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7.
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GeantV: from CPU to accelerators
/ Amadio, G (Sao Paulo, IFT) ; Ananya, A (Indian Inst. Tech., Madras) ; Apostolakis, J (CERN) ; Arora, A (Indian Inst. Tech., Madras) ; Bandieramonte, M (CERN) ; Bhattacharyya, A (Bhabha Atomic Res. Ctr.) ; Bianchini, C (Sao Paulo, IFT ; Mackenzie Presbiteriana U.) ; Brun, R (CERN) ; Canal, P (Fermilab) ; Carminati, F (CERN) et al.
The GeantV project aims to research and develop the next-generation simulation software describing the passage of particles through matter. While the modern CPU architectures are being targeted first, resources such as GPGPU, Intel© Xeon Phi, Atom or ARM cannot be ignored anymore by HEP CPU-bound applications. [...]
FERMILAB-CONF-16-625-CD.-
2016 - 8 p.
- Published in : J. Phys.: Conf. Ser. 762 (2016) 012019
Fulltext: fermilab-conf-16-625-cd - PDF; Amadio2016JPhys - PDF; External link: FERMILABCONF
In : 17th International Workshop on Advanced Computing and Analysis Techniques in Physics Research, Valparaíso, Valparaíso, Chile, 18 - 22 Jan 2016, pp.012019
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8.
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Towards a high performance geometry library for particle-detector simulations
/ Apostolakis, J (CERN) ; Bandieramonte, M (INAF, Catania) ; Bitzes, G (CERN) ; Brun, R (CERN) ; Canal, P (Fermilab) ; Carminati, F (CERN) ; Cosmo, G (CERN) ; Licht, J C De Fine (CERN) ; Duhem, L (Intel, Chandler) ; Elvira, V D (Fermilab) et al.
Thread-parallelisation and single-instruction multiple data (SIMD) ”vectorisation” of software components in HEP computing has become a necessity to fully benefit from current and future computing hardware. In this context, the Geant-Vector/GPU simulation project aims to re-engineer current software for the simulation of the passage of particles through detectors in order to increase the overall event throughput. [...]
2015 - 6 p.
- Published in : J. Phys.: Conf. Ser. 608 (2015) 012023
Fulltext: PDF;
In : 16th International workshop on Advanced Computing and Analysis Techniques in physics (ACAT), Prague, Czech Republic, 1 - 5 Sep 2014, pp.012023
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9.
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Adaptive track scheduling to optimize concurrency and vectorization in GeantV
/ Apostolakis, J (CERN) ; Bandieramonte, M (INAF, Catania) ; Bitzes, G (Athens U.) ; Brun, R (CERN) ; Canal, P (Fermilab) ; Carminati, F (CERN) ; Licht, J C De Fine (Copenhagen U.) ; Duhem, L (Intel, Chandler) ; Elvira, V D (Fermilab) ; Gheata, A (CERN) et al.
The GeantV project is focused on the R&D; of new particle transport techniques to maximize parallelism on multiple levels, profiting from the use of both SIMD instructions and co-processors for the CPU-intensive calculations specific to this type of applications. In our approach, vectors of tracks belonging to multiple events and matching different locality criteria must be gathered and dispatched to algorithms having vector signatures. [...]
2015 - 8 p.
- Published in : J. Phys.: Conf. Ser. 608 (2015) 012003
Fulltext: PDF;
In : 16th International workshop on Advanced Computing and Analysis Techniques in physics (ACAT), Prague, Czech Republic, 1 - 5 Sep 2014, pp.012003
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10.
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Resistive plate chambers for 2013-2014 muon upgrade in CMS at LHC
/ Colafranceschi, S (CERN) ; Chudasama, R (Bhabha Atomic Res. Ctr.) ; Pant, L M (Bhabha Atomic Res. Ctr.) ; Mohanty, A K (Bhabha Atomic Res. Ctr.) ; Sehgal, R (Bhabha Atomic Res. Ctr.) ; Sehgal, S T (Bhabha Atomic Res. Ctr.) ; Thomas, R G (Bhabha Atomic Res. Ctr.) ; Sharma, A (CERN) ; Bhandari, V (Panjab U.) ; Chand, S (Panjab U.) et al.
During 2013 and 2014 (Long Shutdown LS1) the CMS experiment is upgrading the forward region installing a fourth layer of RPC detectors in order to complete and improve the muon system performances in the view of the foreseen high luminosity run of LHC. The new two endcap disks consists of 144 double-gap RPC chambers assembled at three different production sites: CERN, Ghent (Belgium) and BARC (India). [...]
2014 - 9 p.
- Published in : JINST 9 (2014) C10033
In : 12th workshop on Resistive Plate Chambers and Related Detectors, Beijing, China, 23 - 28 Feb 2014, pp.C10033
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