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HK: Fachverband Physik der Hadronen und Kerne

HK 62: Schwerionenkollisionen und QCD Phasen

HK 62.2: Vortrag

Donnerstag, 7. März 2013, 14:30–14:45, HSZ-201

The KFParticle Package for the Fast Particle Reconstruction in ALICE and CBM — •Maksym Zyzak^1,2,3, Ivan Kisel^1,2,3, Igor Kulakov^1,2,3, and Iourii Vassiliev^1,3 — ¹Goethe-Universitaet Frankfurt, Frankfurt am Main, Germany — ²Frankfurt Institute for Advanced Studies, Frankfurt am Main, Germany — ³GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

Modern heavy-ion experiments operate with very high data rates and track multiplicities collecting petabytes of data, therefore the speed of the reconstruction algorithms is crucial both for the online and offline data analysis. The KFParticle package for short-lived particles reconstruction has been developed and is actively used both in the CBM and ALICE experiments. The package is based on the Kalman filter mathematics and has rich functionality. It is geometry independent and can be used in other experiments too.

Almost all modern servers are equipped with many or multi-core processors, which contain SIMD modules. The KFParticle has been SIMDized, which gives the additional speedup factor of 3-5. KFParticle allows to reconstruct about 50 decay channels achieving speed of 1.5 ms per Au+Au mbias collisions at 25 AGeV on a single core. The package has been parallelized between cores and shows strong linear scalability on servers with up to 80 logical cores.

Supported by FIAS, HICforFAIR and HGS-HIRe for FAIR. Das Projekt wird vom Hessischen Ministerium für Wissenschaft und Kunst gefördert.