基于申威异构众核处理器架构的模态并行算法  

Modal parallel algorithm based on Shenwei heterogeneous multi-core processor architecture

作　　者：喻高远 马志强 李俊杰 金先龙[1,2] YU Gaoyuan;MA Zhiqiang;LI Junjie;JIN Xianlong(State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China;School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;AECC Commercial Aircraft Engine Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]上海交通大学机械系统与振动国家重点实验室,上海200240 [2]上海交通大学机械与动力工程学院,上海200240 [3]中国航发商用航空发动机有限责任公司,上海200240

出　　处：《振动与冲击》2022年第3期224-230,共7页Journal of Vibration and Shock

基　　金：国家重点研发计划(2017YFB0202701);国家自然科学基金(11772192)。

摘　　要：根据国产申威异构众核处理器架构特点,提出了一种结构有限元模态分层通信并行计算方法,对于提高国产申威异构众核分布式存储并行计算机下重大装备系统级模态分析的并行效率具有重要意义。该方法在分层通信策略和加速子空间迭代法的基础上构建了大规模模态分析并行计算体系,不仅实现了计算过程和数据通信的分层,有效提高了通信效率;而且实现了计算数据的分布式存储,显著改善了数据访存效率。将并行计算体系应用于某超深钻机制动系统主体结构和某跨江隧道,实现了上千万自由度、数万核的模态分析并行计算;结合算例对该算法的正确性和有效性进行了评估。结果表明,该算法能够充分利用国产申威异构众核分布式存储并行计算机的体系结构特点提高重大装备系统级模态并行计算效率。Here,according to architecture characteristics of domestic Shenwei heterogeneous multi-core processor,a structural finite element modal layered communication parallel algorithm was proposed,it is of great significance to improve parallel efficiency of system level modal analysis of major equipment under domestic Shenwei heterogeneous multi-core distributed storage parallel computer.Based on the layered communication strategy and accelerated subspace iteration method,a parallel computing system for large-scale modal analysis was constructed using the proposed algorithm not only to realize layering of computing process and data communication,but also effectively improve communication efficiency.Moreover,the distributed storage of computing data was realized,and the data access efficiency was significantly improved.The parallel computing system was applied in main structure of braking system of a certain ultra-deep drilling rig and a certain river-crossing tunnel to realize parallel computing of modal analysis with ten-million-DOF and ten-thousand-core.The correctness and effectiveness of the algorithm were evaluated with examples.The results showed that the proposed algorithm can make full use of architecture characteristics of domestic Shenwei heterogeneous multi-core distributed storage parallel computer system,and improve the efficiency of system level modal parallel computing of major equipment.

关 键 词：异构众核 分布式存储 分层通信 大规模模态分析 并行计算 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论] O246.6[自动化与计算机技术—计算机科学与技术]