基于服务级协定的Globus资源管理模型实现框架

Implementation of Globus Resource Management Model Based on Service Level Agreement

针对Globus资源管理模型缺乏QoS机制.该文提出一个支持动态QoS重协商的Globus资源管理模型框架.通过扩展Web服务协定规范使其支持重协商并能在服务供应期间修改协定条款;然后重点研究如何将扩展的Web服务协定框架集成到Globus资源管理模型中,设计出一个支持动态QoS重协商的Globus资源管理框架,并通过关键Web服务的实现验证该框架的实际可行性.理论分析和实验结果表明,该模型框架不仅能提高任务的成功率,而且能均衡网格资源负载.

As the Globus resource management （GRM） model lacks QoS mechanism, this paper proposes an extended framework for GRM, GRMF, which can support dynamic QoS renegotiation. WS-Agreement specification is extended to support renegotiation and modification of the agreement terms during the service provision. Then, integration of the extended WS-Agreement framework with GRM model is studied. The dynamic QoS renegotiationsupported GRMF is devised accordingly. Feasibility of the framework is validated by realizing key web services. The theoretical analysis and experimental results show that the framework can improve the success ratio of tasks, and allow better resource load balancing within the grid.