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Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 74: Schwerionenkollisionen und QCD Phasen

HK 74.3: Talk

Thursday, March 7, 2013, 17:30–17:45, HSZ-201

Hydrodynamics on graphic cards — •Jochen Gerhard1,2, Volker Lindenstruth1,2, and Marcus Bleicher1,31Frankfurt Institute for Advanced Studies (FIAS), Ruth-Moufang-Str. 1, D-60438 Frankfurt — 2Institut für Informatik, Goethe-Universität Frankfurt, Robert-Meyer-Straße 11-15, D-60054 Frankfurt — 3Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, D-60438 Frankfurt

In the field of high-energetic nucleus-nucleus collisions at RHIC and LHC ideal and dissipative relativistic hydrodynamics is used to calculate the evolution of hot and dense QCD matter. A large body of current numerical tools employs relativistic hydrodynamics in various facets. The acceleration of relativistic hydrodynamics using graphic cards (GPUs) is therefore of highest relevance to this fields. The results reported here are based on the Sharp And Smooth Transport Algorithm SHASTA, which is employed in many hydrodynamical models and hybrid simulation packages, e.g. the Ultrarelativistic Quantum Molecular Dynamics model (UrQMD). We have redesigned the SHASTA using the OpenCL computing framework to work on accelerators like graphic processing units (GPUs) as well as on multi-core processors. With the redesign of the algorithm the hydrodynamic calculations have been accelerated by a factor 160 allowing for event-by-event calculations and better statistics in hybrid calculations.
Supported by the Hessian LOEWE initiative through the Helmholtz International Center for FAIR (HIC for FAIR).

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