科学工作流中基于上下文感知的资源访问控制

Context-aware resource access control in scientific workflows

网格环境的动态性使得科学工作流执行过程中的资源访问控制成为一个重要的研究课题。因此,提出一种基于上下文感知的资源访问控制机制,对科学工作流的任务上下文及其约束进行了分析和定义。描述了基于上下文感知的资源访问控制算法,并在此基础上设计了基于上下文感知的科学工作流管理系统框架。最后,通过天气预报这个科学工作流实例验证了该算法。

The dynamic feature of the grid environment makes the scientific workflow execution time resource management become a key research issue. So, a context-aware resource access control mechanism is proposed. The task context and the context constrain are defined, and then an algorithms for context-aware resource access control is introduced. In addition, a framework of context-aware scientific workflow management system is presented. At last, a case study is raised to verify the algorithms.