激光辐照下树脂基复合材料温度场MSPH算法的并行化

Parallelization of MSPH Simulating the Temperature Field of Resin Composite Irradiated by Laser

改进的光滑粒子方法在模拟激光对树脂基复合材料的辐照效应时具有明显优势,但串行计算通常难以满足需求。为了提高程序的运行效率,基于消息传递界面并行编程环境实现了串行程序的并行化。将个人电脑完成的串行计算结果与峰值5万亿次的计算机集群完成的并行计算结果进行了比较,并对并行程序的加速比和并行效率进行了测试。数值计算表明,并行计算结果与串行计算结果一致,且并行效果显著,说明基于消息传递界面的并行化是成功的。

The modified smoothed particle hydrodynamics method（MSPH） has obvious advantages on simulating the radiation effects of resin composite irradiated by laser,but the serial computation is difficult to meet the demand.In order to improve the computational efficiency of the serial MSPH program,the parallelization of the serial program was carried out by using the message passing interface（MPI） standard.The parallel computing results were compared with the serial computing results given by a personal computer,and the performances of the parallel program involving speed-up and efficiency are tested on a 5 teraflop computer cluster.Numerical calculations show that the parallel computing results are consistent with the serial computing results,thus obtaining a very good parallel performance.Therefore,the parallelization based on MPI is successful.