基于动态有色Petri网的网格服务工作流模型的研究

Research on Grid Service Workflow Model Based on Dynamic Colored Petri Net

在深入了解网格技术、网格服务和网格工作流的概念、特点及其应用的基础上,提出了一种可行的网格服务工作流系统模型,重点介绍了动态优化建模技术、动态调度算法的实现思想.定义了一种动态有色Petri网作为服务工作流的建模工具,支持服务工作流的动态优化建模和动态调度,并为服务工作流模型提供性能评价依据.验证表明采用该模型能够很好地满足用户的QoS要求,并且有助于提高资源利用率.

A feasible Grid Service Workflow system is proposed based on in-depth understanding the concepts,characteristics, applications of Grid technology,Grid Service and Grid Workflow,dynamic modeling optimizing technology and dynamic scheduling algorithm are introduced as the emphases. Dynamic Colored Petri Net as a modeling tool of service workflow is defined, Which sustains workflow Dynamic Modeling and Dynamic Scheduling,as well as offering performance appraisement method. The test shows that using the model can improve resource utilization.