现代应用物理2024，Vol.15Issue(3)：30-35,6.DOI:10.12061/j.issn.2905-6223.2024.030203
先进中子学程序SCAP-N混合并行方法
Hybrid Parallel Method for Advanced Neutronics Code SCAP-N
摘要
Abstract
An MPI/OpenMP hybrid parallel method is proposed and implemented in the advanced neutronics code SCAP-N to improve its computational efficiency.The MPI distributed parallel method is adopted to realize parallelism between the layered two-dimensional core simulations,as well as the coarse-grained region decomposition parallelism of the three-dimensional core pin-by-pin transport calculations.The OpenMP shared storage parallel method is used to achieve parallelism of non-uniform transport calculations within each two-dimensional core,as well as fine-grained parallelism of pin-by-pin transport calculations within each MPI decomposed region of the three-dimensional core.The numerical results show that the MPI/OpenMP hybrid parallel method can be successfully implemented in the SCAP-N code.Compared to the pure MPI method,the hybrid method significantly reduces the computational time,decreases the number of domain decompositions in neutron transport calculations,alleviates the degradation of source iteration format,and improves the program's stability and efficiency of convergence.关键词
非均匀输运/逐棒输运/高性能计算/混合并行Key words
non-uniform transport/pin-by-pin transport/high performance computing/hybrid parallelism分类
能源科技引用本文复制引用
施骏,彭良辉,杨波,毕光文,杨伟焱..先进中子学程序SCAP-N混合并行方法[J].现代应用物理,2024,15(3):30-35,6.基金项目
国家重点研发计划资助项目(2022YFB1902200) （2022YFB1902200）
