High Performance Computing of Meshless Time Domain Method on Multi-GPU Cluster

3rd International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Ikuno, Soichiro^1 ; Nakata, Susumu^2 ; Hirokawa, Yuta^3 ; Itoh, Taku^1

School of Computer Science, Tokyo University of Technology, Hachioji, Tokyo

192-0982, Japan^1

Institute of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga

525-8577, Japan^2

Graduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki

305-8573, Japan^3

关键词: Calculation procedure;    Communication time;    Computational science;    High performance computing;    Numerical domains;    Perfect matched layers;    Time-domain methods;    University of Tsukuba;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/574/1/012106/pdf
DOI  :  10.1088/1742-6596/574/1/012106

来源: IOP

【 摘 要 】

High performance computing of Meshless Time Domain Method (MTDM) on multi-GPU using the supercomputer HA-PACS (Highly Accelerated Parallel Advanced system for Computational Sciences) at University of Tsukuba is investigated. Generally, the finite difference time domain (FDTD) method is adopted for the numerical simulation of the electromagnetic wave propagation phenomena. However, the numerical domain must be divided into rectangle meshes, and it is difficult to adopt the problem in a complexed domain to the method. On the other hand, MTDM can be easily adept to the problem because MTDM does not requires meshes. In the present study, we implement MTDM on multi-GPU cluster to speedup the method, and numerically investigate the performance of the method on multi-GPU cluster. To reduce the computation time, the communication time between the decomposed domain is hided below the perfect matched layer (PML) calculation procedure. The results of computation show that speedup of MTDM on 128 GPUs is 173 times faster than that of single CPU calculation.