Abstract: Quantitative estimation precipitation system of China Meteorological Administration is comput}intensive and a real-time application. If one work can reduce its execution time, it will bring enormous benefits to the society. First, implementing hotspot analysis and concurrency analysis on serial code with VTune Amplifer XE. Then, parallelizing this program on Intel 4-core platform using both Win32 thread and OpenMP. hhis program has two separated part; single station process and networking process. Because of limited computing resource, the parallel version of single-station process gains only 10 0 o performance increase. But performance of networking process can achieve nearly linear increase. 13y balancing the load of the whole program, parallel version may achieve speedup of 5. 5. And through analysis of meth- ods to parallelize code, summarizing the general method of parallelizing a class of program.

Key words: Hotspot analysis, Concurrency analysis, OpenMP, Win32 thread, Networking weather radar