基于QoS的网格工作流的选择调度算法

开放网格服务架构（OGSA）和计算经济模型的提出，使得动态的、不同QoS的服务支持下的资源调度成为一个复杂且具有挑战性的问题。文中提出了基于QoS的网格工作流的选择调度算法，该算法采用动态资源选择策略适应网格计算环境下的动态性和自治性。在满足用户对服务质量要求的基础上，平衡了工作流中服务实例的花费、处理时间和可用性之间的关系。试验证明该调度算法符合计算网格的复杂环境，能够更好地满足不同用户的实际需要。

QoS-Based Selection Scheduling Algorithm for Grids Workflow

Service resources allocation and scheduling is one of the challenging and complex problems in computation-economy-driven open grid service architecture. This paper proposes a OoS-based selection schedulingalgorithm for grids workflow, which could satisfy requirements of the user for the quality of service and the trade-off of cost, time and availiablity. Dynamic service selection strategy could adapt to dynamically shared and autonomous resources in grids. Simulation results show that the algorithm could realize less completion time and lower cost, meet the requirements in practical applications.