DwsM动态并行计算技术  

Research on dynamic parallel computing technology of dynamic watershed simulation model

作　　者：张岳峰[1,2] 方红卫[1,2] 张红武[1,2] 钟德钰[1,2] 赵慧明[3,4] 王新军 

机构地区：[1]清华大学水利水电工程系,北京100084 [2]水沙科学与水利水电工程国家重点实验室,北京100084 [3]中国水利水电科学研究院泥沙研究所,北京100048 [4]流域水循环模拟与调控国家重点实验室,北京100048 [5]宁夏防汛抗旱指挥部办公室,宁夏银川750001

出　　处：《水利水电科技进展》2015年第3期47-52,共6页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(51139003,11372161,51479213)

摘　　要：针对DWSM计算模式鲁棒性低、计算时间长、无法实现多核计算等局限性,对模型的算法和存储规则进行相应改进。在遵从DWSM计算逻辑顺序的基础上,抛弃原计算单元顺序表模式关于虚拟河道的假设,采用流域分区概念进行河网树结构的模式设计,在基于叶节点并行计算的基础上研究动态分级并行计算技术,以进一步完善计算模式。以黄河宁蒙段流域为实例,计算结果表明,算法的优化极大地提高了DWSM的计算效率,增强了其对大范围、具有复杂河网结构流域水沙规律研究的适用性。The computing model of Dynamic Watershed Simulation Model( DWSM) has some limitations,such as low robustness,long computing time,and inability to realize failure in a multicore computer. Therefore,in this paper,we improved the algorithms and storing rules. Based on the computational logic sequence of DWSM,we suggest to use the concept of basin subarea to design the tree structure model of river network instead of the hypothesis on virtual channel of the original calculation unit sequence table model. Also,we introduce the dynamic hierarchical parallel computing technology according to parallel computation of leaf nodes to improve the calculation model. Taking the Yellow River basin between Ningxia and Neimenggu as an example,the results show that the optimization of algorithm greatly improves the computational efficiency of DWSM as well as increases the applicability of calculation on water and sediment rules in the basins with large scale and complex structure of river network.

关 键 词：DwsM 水文模型 河网树结构 动态并行计算 叶节点 

分 类 号：P333.9[天文地球—水文科学]