10860

A new GPU-accelerated hydrodynamical code for numerical simulation of interacting galaxies

Igor Kulikov
Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russia
arXiv:1311.0861 [astro-ph.IM], (4 Nov 2013)

@article{2013arXiv1311.0861I,

   author={Igor}, K.},

   title={"{A new GPU-accelerated hydrodynamical code for numerical simulation of interacting galaxies}"},

   journal={ArXiv e-prints},

   archivePrefix={"arXiv"},

   eprint={1311.0861},

   primaryClass={"astro-ph.IM"},

   keywords={Astrophysics – Instrumentation and Methods for Astrophysics},

   year={2013},

   month={nov},

   adsurl={http://adsabs.harvard.edu/abs/2013arXiv1311.0861I},

   adsnote={Provided by the SAO/NASA Astrophysics Data System}

}

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In this paper a new scalable hydrodynamic code GPUPEGAS (GPU-accelerated PErformance Gas Astrophysic Simulation) for simulation of interacting galaxies is proposed. The code is based on combination of Godunov method as well as on the original implementation of FlIC method, specially adapted for GPU-implementation. Fast Fourier Transform is used for Poisson equation solution in GPUPEGAS. Software implementation of the above methods was tested on classical gas dynamics problems, new Aksenov’s test and classical gravitational gas dynamics problems. Collisionless hydrodynamic approach was used for modelling of stars and dark matter. The scalability of GPUPEGAS computational accelerators is shown.
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