结构动力数值仿真两级并行计算系统开发及应用

The Development and Application of Two-Level Parallel Computing System for Structural Dynamic Numerical Simulation

根据分布式存储并行计算机的体系结构特点,设计了一个结构动力数值仿真两级并行计算系统.首先通过两级分区为并行计算准备数据,并将数据分布式存储在各节点的局部存储器上;在结构动力分析过程中,通过进一步缩减问题规模和有效地提高通信效率大幅度减少了界面方程求解时间以及系统求解总时间.文中详细阐述了该系统工作原理、并行计算流程和系统实现的相关软件开发工具.最后通过典型数值算例验证了该系统的有效性.

According to the architecture characteristics of distributed memory parallel computers, a two-level parallel computing system for structural dynamic numerical simulation is proposed. The data for parallel computing is firstly prepared through two-level partitioning and is distributed to the local memory of each node. Then, during the structural dynamic analysis through further reducing the problem size and effectively improving the communication rate, the solving time of interface equations as well as the total solution time is considerably reduced. The system＇s working principles, parallel computing process and the related software development tools for implementation are described in detail. Finally, the validity of the proposed sys- tem was verified with typical numerical examples.