摘要
针对跨域资源调度中不同信任模型之间的差异,提出了一个由域间代理完成的不同信任机制之间的转换模型,将跨域和域内信任一致处理,实现了跨域信任度的转换和评估。给出了跨域信任中的上下文定义,提出了实现跨域调度并体现上下文含义的调度算法。实验表明,所提出的转换模型和调度算法在跨域范围内选择了信任度高的资源,缩短了任务完成时间,提高了任务满足率,使调度过程得到了优化。
The trust relationship in interdomain is restricted by the difference of inner-domain model of Grid. A new grid interdomain trust model which implemented trust value conversion among domains was proposed in this paper, and at same times, the RUR was sent to source system to evaluate new trust value. As to the model requirement, interdomain infrastructure was proposed. Based on the model and trust context, the scheduling algorithm had been described. Finally we performed simulations to compare the performance of scheduling algorithm with that of the inner-domain model. The experiments show that the scheduling algorithm is efficient on task completion time and task fulfilling ratio within multi-domain grid environments.
出处
《计算机应用》
CSCD
北大核心
2008年第9期2357-2359,2368,共4页
journal of Computer Applications
基金
甘肃省科技攻关项目(2GS064-A52-035-03)
教育部科学技术研究重点项目(208148)
关键词
网格资源
跨域信任模型
信任上下文
调度算法
grid resource
interdomain trust model
trust context
scheduling algorithm
