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Bonsai-SPH: A GPU accelerated astrophysical Smoothed Particle Hydrodynamics code
by Jeroen Bédorf, Simon Portegies Zwart
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Jeroen Bédorf |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/1909.07439v2 (pdf) |
| Date accepted: | 2020-04-17 |
| Date submitted: | 2020-02-28 01:00 |
| Submitted by: | Bédorf, Jeroen |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Astronomy |
| Specialties: |
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| Approach: | Computational |
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.
Author comments upon resubmission
List of changes
Changes made:
Introduction
* Expanded upon differences/advantages/disadvantages between SPH and Grid codes
* Added a paragraph about moving grid codes that combine advantages of SPH and grid codes into a single method.
Multi-GPU section
* Expanded upon the problems faced
* Explain in further detail the performance difference between the multi-GPU gravity and multi-GPU SPH methods and which steps have to be taken to optimize the SPH method.
Published as SciPost Astro. 1, 001 (2020)