Parallelized Solution Method of the Three-dimensional Gravitational Potential on the Yin-Yang Grid
Instrumentation and Methods for Astrophysics
2018-09-10 v2 High Energy Astrophysical Phenomena
Computational Physics
Abstract
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.
Cite
@article{arxiv.1806.04593,
title = {Parallelized Solution Method of the Three-dimensional Gravitational Potential on the Yin-Yang Grid},
author = {Marius Almanstoetter and Tobias Melson and H. -Thomas Janka and Ewald Mueller},
journal= {arXiv preprint arXiv:1806.04593},
year = {2018}
}
Comments
8 pages, 4 figures; two minor additions after refereeing; accepted by ApJ