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Bonsai: A GPU Tree-Code

Authors
  • Bédorf, Jeroen
  • Gaburov, Evghenii
  • Zwart, Simon Portegies
Type
Preprint
Publication Date
Apr 10, 2012
Submission Date
Apr 10, 2012
Identifiers
arXiv ID: 1204.2280
Source
arXiv
License
Yellow
External links

Abstract

We present a gravitational hierarchical N-body code that is designed to run efficiently on Graphics Processing Units (GPUs). All parts of the algorithm are executed on the GPU which eliminates the need for data transfer between the Central Processing Unit (CPU) and the GPU. Our tests indicate that the gravitational tree-code outperforms tuned CPU code for all parts of the algorithm and show an overall performance improvement of more than a factor 20, resulting in a processing rate of more than 2.8 million particles per second.

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