Bonsai-SPH: A GPU accelerated astrophysical Smoothed Particle Hydrodynamics code

Abstract

We present the smoothed-particle hydrodynamics simulation code, Bonsai-SPH, which is a continuation of our previously developed gravity-only hierarchical $N$-body code (called Bonsai). The code is optimized for Graphics Processing Unit (GPU) accelerators which enables researchers to take advantage of these powerful computational resources. Bonsa-SPH produces simulation results comparable with state-of-the-art, CPU based, codes, but using an order of magnitude less computation time. The code is freely available online and the details are described in this work.

arXiv commentUpdated intro and multi-GPU sections. 23 pages, 9 figures. Submission to SciPost