二维宏观拟颗粒并行模拟程序通信性能优化策略

Optimization strategy of communication performance in 2D macro-scale pseudoparticle parallel simulation

随着粒子模拟并行计算在相关领域应用的不断深入和并行节点计算能力的不断增强,粒子模拟并行程序中通信耗时对整体性能的影响越来越显著,甚至成为主要性能瓶颈。本文在分析影响并行程序通信性能多种因素的基础上,从进程划分方式选择、通信协议优化的角度,对1个典型粒子模拟并行程序——二维宏观拟颗粒并行模拟程序在千兆以太网环境下的通信性能的优化策略进行了测试研究,通过改进并行进程划分方式,采用用户级通信协议等方法,使测试程序通信性能获得明显提高,进而提出了粒子模拟并行程序通信性能优化的思路和建议。

As the application of particle simulation parallel computing becomes more and more widely used, the communication performances in the particle simulation parallel programs can significantly affect the simulation performances when the parallel scale increases, which even may become the major performance bottleneck of the simulation. Based on the analysis of the factors that may affect the communication performances in parallel programs, optimization tests on process partitioning and communication protocol for the communication performance in a 2D macro-scale pseudo-particle parallel simulation program, a typical particle simulation parallel program have been done on Gigabit Ethernet. With improved process partitioning and use of user-level communication protocol, communication performance of the testing program has been enhanced. Some communication performance optimization strategies for particle simulation parallel programs are also proposed in the paper.