| 19 | 19 | The gravitational N-body problem is a problem concerning the planet movement, when interacting between the fixed star and planet by universal gravitation such as the solar system. However, solving the gravitational N-body problem with a CPU takes a lot of time. In this paper, I show how to speed-up solving the gravitational N-body problem by using GPU, which is high performance graphic processing unit. In addition, to achieve higher performance, I optimized my program on GPU by loop unrolling. As a result, the peak performance to solve 100000-body problem was about 500 GFLOPS in my optimized program on GPU. |
