Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 74: Schwerionenkollisionen und QCD Phasen
HK 74.3: Vortrag
Donnerstag, 7. März 2013, 17:30–17:45, HSZ-201
Hydrodynamics on graphic cards — •Jochen Gerhard1,2, Volker Lindenstruth1,2, and Marcus Bleicher1,3 — 1Frankfurt 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).