摘要
针对实现资源共享和协同工作的网格技术应用与发展现状,提出分层网格工作流体系结构:在设计层利用网格工作流逻辑和网格工作流语义对网格工作流建模;在运行层,利用网格工作流调度引擎和网格工作流实施引擎完成任务的调度及实施;在资源层实现和具体底层网格资源的交互。为支持上述结构,引入Petri网中的库所同步器对网格工作流逻辑建模;定义了扩展计算网模型ECN,以描述网格工作流语义。可变同步器、计算网及网格工作流实施引擎的结合,从设计时及运行时两个角度提供了对动态网格工作流的支持。最后以实例说明了分层网格工作流支撑环境建模的具体应用。
Grid is innovative information service infrastructure for dynamic and distributed resources sharing and collaboration. In accordance with current state of grid application＇s research and development, a layered dynamic grid workflow architecture is proposed： modeling the grid workflow in design layer based on grid workflow logic net and grid workflow semantic net,operating the task in running layer by utilizing grid workflow scheduling engine and grid workflow operating engine, and taking grid middleware as the interface of resource layer and running layer. To support this architecture, synchroizer of Petri nets is used to model grid workflow logic, and an extended computing net model （ECN） is defined to describe grid workflow＇s semantieme. Variable synchronizer, computing net and grid workflow operating engine can support the dynamic grid workflow from design to running. At last the environment of the layered dynamic grid workflow is illustrated.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2006年第3期444-447,共4页
Systems Engineering and Electronics
