中期数值预报系统T213L31在IBM/SP高性能计算机上的建立  

FOUNDATION OF MEDIUM-RANGE NUMERICAL FORECAST SYSTEM T213L31 ON HIGH PERFORMANCE COMPUTER IBM/SP

作　　者：陈起英[1] 金之雁[2] 伍湘君[2] 姚明明 Ali Mechentel 

机构地区：[1]国家气象中心 [2]中国气象科学研究院 [3]IBM TJ Watson Research Center,New York10598,USA

出　　处：《应用气象学报》2004年第5期523-533,共11页Journal of Applied Meteorological Science

摘　　要：在引进欧洲中期天气预报中心 (ECMWF)的全球谱模式的基础上 ,通过对原模式的分析改造 ,首次以分布与共享相结合的方式在国家气象中心IBM/SP高性能计算机上实现了全球谱模式的高效运行。采用调整向量长度、优化程序设计、完善消息传递机制和实现MPI与OpenMP的混合并行编程等方法 ,减少模式的通信量、计算量和内存的使用量 ,提高了计算效率。实现了在T2 1 3L31分辨率条件下 ,1 0天预报可以在 3h之内完成 ,达到业务对时限的要求。建立了与T2 1 3L31全球谱模式相配套的最优插值 (OI)并行处理分析系统 ,解决了由于观测站点在全球不均匀分布所带来的计算负载不均衡问题。在此基础上 ,实现了T2 1Using combined method of distributed and shared memory parallelization, new global spectral model based on ECMWF is run on high performance computer IBM/SP with great efficiency in National Meteorological Center (NMC) for the first time. The model performance is improved greatly by means of changing vector length, optimizing program design, ameliorating message passing mechanism, realizing joint application of distributed and shared memory parallelization, to decrease communication, calculation and memory consumption. Now 10 day forecasts of the model with resolution T213L31 can be finished within 3 hours so as to satisfy operational time requirement. At the same time, the parallel Optimization Interpolation (OI) analysis system matching T213L31 global spectral model is constructed, and the problem of calculation load imbalance produced by spatial heterogeneousness of global observation stations is resolved, so that T213L31 global data assimilation and forecast system is built based on the above work, and so is corresponding automatic job control and watching system.

关 键 词：T213 谱模式 ECMWF 数值预报系统 中期天气预报 资料同化 国家气象中心 高性能计算机 IBM 消息传递机制 

分 类 号：P456.7[天文地球—大气科学及气象学] TP393[自动化与计算机技术—计算机应用技术]