Abstract
Electrophotography is the technology of controlling toner at high speed and precision. In order to achieve such various advanced requests as better picture, speeding up and colorization, simulation-aided design with Discrete Element Method (DEM) is important. On the other hand, in DEM, the electromagnetic and mechanical interactions between all particles are calculated and each equation of motion is integrated every time step, so the computational cost amounts to very high. In recent years, Graphics Processing Unit (GPU) has received remarkable attention as a low-power-consumption, inexpensive and high-performance shared-memory parallel processing unit from a wide range of areas including High-performance Computing (HPC). Numerical simulation with these GPUs is applied to various scientific computation and achieves very high operation performance. In this paper, we applied the common-used speed-up technique in HPC such as GPU and the tree method to toner particle simulation based on DEM. Then, we implemented the present method on one thin node of TSUBAME 2.0 and verified the method.
