= Fast Simulations of Gravitational Many-body Problem on RV770 GPU =
== abstract ==
The gravitational many-body problem is a problem concerning the movement of bodies, which are interacting through gravity. However, solving the gravitational many-body problem with a CPU takes a lot of time due to O(N**2) computational complexity. In this paper, we show how to speed-up the gravitational many-body problem by using GPU. After extensive optimizations, the peak performance obtained so far is about 1 Tflops. 

== preprint ==
http://jp.arxiv.org/abs/0904.3659


= Oct-tree on GPU =
to be posted soon