一种MPI并行软件的动态演化框架

A FRAMEWORK OF DYNAMIC EVOLUTION FOR MPI PARALLEL SOFTWARE

为使MPI并行计算软件具有运行时改变软件功能和拓扑的能力,基于MPI系统模型提出一种用于描述和实现动态演化的两层软件框架。在管理层,采用适用于消息传递的管道-过滤器风格规范系统的结构、分析并行软件的可演化性,并约定一种相应的动态ADL用于描述演化行为。在计算层,设计符合管道-过滤器风格的构件元模型及过滤器的重配置管理自动机。针对实现演化的两个核心问题,即进程的启动和数据连接的建立释放,实现基于MPI动态进程管理的重配置方法。通过性能测试,验证了该软件框架的可用性,为并行计算软件的动态演化提供了一种新的实现方法。

To make MPI parallel computing software have the capabilities of changing software functions and topology, based on MPI system model we proposed a two-layer software framework for describing and implementing dynamic evolvable. On management layer, we normalised the system structure with pipe-filter style applicable to massage passing, and analysed the evolution property of parallel applications, as well as agreed on a correlated dynamic ADL for evolution behaviours description. On computation layer, we designed the meta-model of components suitable for pipe-filter style and the finite automaton （FA） for controlling reconfiguration of filter. In order to solving two key challenges of evolution implementation, i. e. , the launching of process and the establishing and freeing of data connection, the reconfigure method based on MPI dynamic process management was realised. Through performance test the feasibility of this framework was verified. This framework provides a new implementation method of dynamic evolution for parallel computing software.