Parallelized Solution Method of the Three-dimensional Gravitational Potential on the Yin-Yang Grid
| Autor: | Ewald Müller, Marius Almanstötter, Hans-Thomas Janka, Tobias Melson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics FOS: Physical sciences Astronomy and Astrophysics Computational Physics (physics.comp-ph) Grid 01 natural sciences 010305 fluids & plasmas Gravitation Gravitational potential Space and Planetary Science 0103 physical sciences Decomposition (computer science) Applied mathematics Density field Multipole expansion Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics (astro-ph.IM) 010303 astronomy & astrophysics Physics - Computational Physics |
| Popis: | We present a new method for solving the three-dimensional gravitational potential of a density field on the Yin-Yang grid. Our algorithm is based on a multipole decomposition and completely symmetric with respect to the two Yin-Yang grid patches. It is particularly efficient on distributed-memory machines with a large number of compute tasks, because the amount of data being explicitly communicated is minimized. All operations are performed on the original grid without the need for interpolating data onto an auxiliary spherical mesh. 8 pages, 4 figures; two minor additions after refereeing; accepted by ApJ |
| Databáze: | OpenAIRE |
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