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| Paper: |
Bonsai: A GPU Tree-Code |
| Volume: |
453, Advances in Computational Astrophysics: Methods, Tools, and Outcome |
| Page: |
325 |
| Authors: |
Bédorf, J.; Gaburov, E.; Portegies-Zwart, S. |
| 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 exectued 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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