基于OpenMP的堆芯中子学软件性能优化研究  

Study on Performance Optimization of Core Neutronics Software Based on OpenMP

作　　者：刘婷 安萍[1] 芦韡[1] 秦志红 LIU Ting;AN Ping;LU Wei;QIN Zhihong(Nuclear Power Institute of China,Chengdu,Sichuan Prov.610213,China)

机构地区：[1]中国核动力研究设计院,四川成都610213

出　　处：《中国核电》2024年第2期190-196,共7页China Nuclear Power

摘　　要：CORCA-3D软件是中国核动力研究设计院自主研发的先进节块法堆芯三维少群中子学计算软件,提升CORCA-3D软件运行速度可以提高反应堆系统分析的效率。目前CORCA-3D软件采用单线程的方式运行,并没有充分利用计算机的多核硬件资源,对CORCA-3D软件进行性能分析,发现其存在运行时间较长的热点函数,CPU利用率较低,因此可引入并行编程技术来加速CORCA-3D软件的计算。文中将OpenMP编程技术运用到CORCA-3D软件中,并介绍了CORCA-3D软件并行优化的设计与实现。通过对方家山1号机组全堆芯进行测试,证明并行编程技术可大幅提升CORCA-3D软件的运行效率,平均加速比约为2左右。此并行编程技术的运用为后续堆芯数值软件应用提供技术支撑。The CORCA-3D software is an advanced nodal method core three-dimensional few group neutronics calculation software independently developed by Nuclear Power Institute of China.Improving the running speed of CORCA-3D software can improve the efficiency of reactor system analysis.At present,CORCA-3D software runs in a single thread mode and does not make full use of the multi-core hardware resources of computers.Through the performance analysis of the CORCA-3D software,it is found that there are hot functions with long running time and low CPU utilization.Therefore,parallel programming technology can be introduced to accelerate the calculation of CORCA-3D software.This paper applies OpenMP programming technique to the CORCA-3D software,and introduces the design and implementation of parallel optimization of CORCA-3D software.Through the test of the whole core of Unit 1 of Fangjiashan NPP,it is proved that the parallel programming technique can greatly improve the operation efficiency of the CORCA-3D software,the average acceleration ratio is about 2.The application of this parallel programming technique provides technical support for subsequent core numerical software applications.

关 键 词：堆芯中子学 并行编程 OPENMP 运行效率 

分 类 号：TM623[电气工程—电力系统及自动化]