Optimization of Parallel Program Based on Lattice BGK Method

摘要：

　　Lattice Boltzmann Method(LBM)is a new method for fluid system modeling and simulation.This method is a meso-scopic model between the micro-molecular dynamics model and the macro-continuous model of fluids,and has both mod-els'advantages.In this paper,we use the parallel methods and the extended interfaces provided by Sunway TaihuLight System to optimize the fluid solution program based on the lattice Boltzmann method(we use D3Q19 model).Based on the light of Sunway TaihuLight,we use two-level parallel mode to optimize the SWLBM program(based on LBM).The first level uses MPI parallel partition,and the second level uses master-slave accelerated parallel method to improve performance.We optimize the solution process based on lattice Boltzmann method,which greatly improves the ef-ficiency of the fluid calculation program based on lattice Boltzmann method.Our method reduces the computational time of SWLBM program from 3127 s to 113 s.

关键词： Lattice Bhatnagar-Gross-Krook LBM parallel performance optimization Athread

作者: Xudong Tang Chen Xue Tao Wu Tiejun Wang

作者单位: Chengdu University of Information Technology Shuangliu Qu,Chengdu,China

会议类型: 国际会议

会议名称: 2019国图灵大会(ACM Turing Celebration conference-China 2019 )

会议地点: 成都

会议语种:英文

页码: 909-915

在线出版日期: 2019-05-17（万方平台首次上网日期，不代表论文的发表时间）