Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativistic hydrodynamics on graphics processing units   Hydrodynamics calculations have been successfully used in studies of the bulk
properties of the Quark-Gluon Plasma, particularly of elliptic flow and shear
viscosity. However, there are areas (for instance event-by-event simulations
for flow fluctuations and higher-order flow harmonics studies) where further
advancement is hampered by lack of efficient and precise 3+1D~program. This
problem can be solved by using Graphics Processing Unit (GPU) computing, which
offers unprecedented increase of the computing power compared to standard CPU
simulations. In this work, we present an implementation of 3+1D ideal
hydrodynamics simulations on the Graphics Processing Unit using Nvidia CUDA
framework. MUSTA-FORCE (MUlti STAge, First ORder CEntral, with a~slope limiter
and MUSCL reconstruction) and WENO (Weighted Essentially Non-Oscillating)
schemes are employed in the simulations, delivering second (MUSTA-FORCE), fifth
and seventh (WENO) order of accuracy. Third order Runge-Kutta scheme was used
for integration in the time domain. Our implementation improves the performance
by about 2~orders of magnitude compared to a~single threaded program. The
algorithm tests of 1+1D~shock tube and 3+1D~simulations with ellipsoidal and
Hubble-like expansion are presented.

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The categories of this paper are: nlin
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: econ
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg