徐凤洲, 张健飞.基于OpenMP的近场动力学模拟并行实现[J].河南理工大学学报（自然科学版）,2020,39(5):130-138.

XU F Z, ZHANG J F.Parallel implementation of peridynamic simulation based on OpenMP[J].Journal of Henan Polytechnic University(Natural Science) ,2020,39(5):130-138.

基于OpenMP的近场动力学模拟并行实现

徐凤洲, 张健飞

河海大学 力学与材料学院，江苏 南京211100

摘要:针对近场动力学模拟计算量大、计算效率低等问题，研究基于OpenMP的近场动力学 （peridynamic， PD）并行化方法，即在多核处理器计算机上利用OpenMP技术对PD程序中耗时占比大的构建邻接节点域、计算物质点表面修正系数、时间积分3个模块进行并行化处理，实现PD模拟的多线程并行化。通过对二维各向同性板的2种键型PD模型（准静态模拟PD模型和动态裂纹扩展模拟PD模型）测试，得出不同线程数下并行计算时间。结果表明，采用 OpenMP并行技术可有效提高近场动力学模拟运算中的计算效率，相比于串行计算，并行计算获得了 2.0 ~4.0倍的加速比。

关键词:近场动力学模拟;OpenMP;多核处理器;多线程;并行计算

doi:10.16186/j.cnki.1673-9787.2020.5.19

基金项目:国家自然科学基金资助项目（51679077 ）；中央高校基本科研业务费专项项目（2016B06414）

收稿日期:2020/01/09

修回日期:2020/03/06

出版日期:2020/09/15

Parallel implementation of peridynamic simulation based on OpenMP

XU Fengzhou, ZHANG Jianfei

College of Mechanics and Material， Hehai University， Nanjing 211100 ， Jiangsu， China

Abstract:In order to solve the low computation efficiency and large computation of peridynamic （ PD ） simulation ，a parallel computing method based on OpenMP was studied. Using OpenMP on multi-core processor， the three most time-consuming modules in the programming， searching neighbors for each node， calculating surface correction coefficient and time integration， were parallelized. A multi-threading parallelization of PD was therefore implemented. Through the tests of two types of bond-based PD models of two-dimensional isotropic plates， the quasi-static PD model and dynamic crack-growing PD model， the computing time under different threadings was obtained. Experimental results showed that the use of OpenMP parallel technique could effectively improve the time efficiency of PD simulation， as a result， the parallel programming got 2.0 to 4.0 acceleration.

Key words:peridynamic simulation;OpenMP;multi-core processor;multi-threading;parallel computing

基于OpenMP的近场动力学模拟并行实现_徐凤洲.pdf