【摘要】 针对网格协同计算的新需求,网格工作流建模既要考虑过程建模,也要考虑资源和服务建模.提出了面向服务的网格层次资源模型:物理资源、服务资源和虚资源,并在此基础上给出了网格应用执行过程中的资源访问机制,使实现过程模型中网格工作流和网格资源的分离并动态映射,增强了网格工作流执行的灵活性和动态适应性,同时也便于对跨地域的网格资源进行管理,提高网格服务的可重用性.更多还原

【Abstract】 The modeling of grid workflow should consider not only workflow processing but also grid resources and services.To satisfy the new requirements in grid cooperative computing,a service-oriented grid resource model was proposed,which is hierarchical including physical resources,service resources and virtual resources.The resource-access mechanism among them was also presented.It tends to separate grid resources from grid workflow during the process,which enhances the flexibility and adaptability of grid workflow with the dynamic mapping.It is also convenient to manage the distributed grid resources to enhance the reusability of grid services.更多还原