Distributed Parallelization of a Global Atmospheric Data Objective Analysis System

It is difficult to parallelize a subsistent sequential algorithm. Through analyzing the sequentialalgorithm of a Global Atmospheric Data Objective Analysis System, this article puts forward a distributedparallel algorithm that statically distributes data on a massively parallel processing (MPP) computer.The algorithm realizes distributed parallelization by extracting the analysis boxes and model grid pointlatitude rows with leaped steps, and by distributing the data to different processors. The parallel algorithmachieves good load balancing, high parallel efficiency, and low parallel cost. Performance experiments ona MPP computer are also presented.