Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 29: Schwerionenkollisionen und QCD Phasen
HK 29.4: Vortrag
Mittwoch, 21. März 2012, 15:00–15:15, P 5
Parallel Kalman filter track fitting library for the CBM experiment — •Maksym Zyzak1,2, Ivan Kisel3, Igor Kulakov1,2, and Hans Pabst4 — 1Goethe-Universität Frankfurt am Main — 2National Taras Shevchenko University of Kyiv, Ukraine — 3GSI Helmholtzzentrum für Schwerionenforschung GmbH — 4Intel GmbH
The CBM experiment at FAIR is being designed to study heavy-ion collisions at extremely high interaction rates. The experiment requires the full on-line event reconstruction, therefore the speed of the algorithms is crucial.
A library for track fitting based on the Kalman filter (KF) has been developed for the CBM experiment. The library includes: track fitting procedures based on the conventional Kalman filter, the square root Kalman filter and the UD Kalman filter; the Kalman filter based smoother; the deterministic annealing filter.
The whole functionality is implemented using 3 approaches: simple headers, which overload SIMD intrinsics; Vc library; Intel ArBB library. The KF library has been tested with icc and gcc compilers on different many-core CPU platforms. The library shows a strong scalability with the number of CPU cores that is both independent of the platform, the compiler as well as independent of the supplied implementations.
Supported by EU-FP7 HadronPhysics3, HICforFAIR and HGS-HIRe for FAIR. Das Projekt wird vom Hessischen Ministerium für Wissenschaft und Kunst gefördert.