原子能科学技术2018，Vol.52Issue(3)：405-411,7.DOI:10.7538/yzk.2017.youxian.0362
NECP-X中角度与特征线并行的研究与实现
Development and Application of Angle and Ray Parallel in NECP-X
摘要
Abstract
Long computing time and abundant memory requirement are two most critical issues for the method of characteristics (MOC) when applied for the three-dimensional whole-core transport calculation.The massive parallel is an effective method to solve these problems.The traditional parallel strategy based on space decomposition is limited by its degree of parallelism when solving the smaller size problem,which means it can not take full advantage of parallel resources.In this paper,a multilevel parallel of angle and characteristic ray was developed based on the space parallel implemented in the highfidelity neutronics code NECP-X.To get good load balance of angle parallel,a greedy algorithm was applied,and to save memory in the ray parallel,a dynamic scheduling feature within shared memory architectures was used.The numerical results show that the parallel efficiency of the angle and characteristic ray in NECP-X is high.And it further expands the parallel degree based on the special decomposition parallelism.关键词
特征线方法/角度并行/贪婪算法/负载平衡/特征线并行/多重并行Key words
method of characteristics/angle parallel/greedy algorithm/load balance/characteristic ray parallel/multilevel parallel分类
能源科技引用本文复制引用
马党伟,刘宙宇,赵晨,陈军,曹良志,吴宏春,唐霄,柴晓明..NECP-X中角度与特征线并行的研究与实现[J].原子能科学技术,2018,52(3):405-411,7.基金项目
国家自然科学基金资助项目(11605130) （11605130）
中国核动力研究设计院核反应堆系统设计技术重点实验室基金资助项目 （）
