计算机是一种工具．作为工具，其应用的成功与否具有重要的意义．本文从应用的角度分析了数据并行处理方式下并行处理的性能．首先，本文建立了一个性能分析模型，之后，基于此模型，对影响并行处理性能的各因素进行了详细地分析．本文的分析结果对于并行算法的设计者和并行计算机系统的设计者均具有指导意义． Computer is a tool. As a tool, the success of its application is of great significance. This paper analyzes the performance of parallel processing in data parallel processing from the application point of view. First of all, this paper establishes a performance analysis model, after which, based on this model, the factors affecting the parallel processing performance are analyzed in detail. The results of this paper are instructive for designers of parallel algorithms and designers of parallel computer systems.