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网格经济模型中基于信任机制的调度算法


□ 唐小勇 李肯立

  摘 要:在buyya设计的grace网格资源管理框架下,提出反映信任值动态变化规律的信任函数,在此基础上建立基于行为的网格信任机制。根据应用环境的不同需求,对网格经济模型dbc调度算法进行改进,分别提出了以时间优化、成本优化和时间—成本折中优化为目标的基于信任的dbc调度算法(trust dbc)。理论分析及模拟实验结果表明,该算法性能明显优于相应的未考虑信任的调度算法。

  关键词:网格经济模型; 微分方程; 调度算法; 信任

  中图分类号:tp309 文献标志码:a 文章编号:1001-3695(2008)08-2357-05

  based on trust grid economic model scheduling algorithm

  tang xiao-yong1 ,li ken-li2

  (1. college of orient science & technology, hunan agricultural university, changsha410128, china; 2. school of computer & communication, hunan university, changsha410082, china)

  abstract:this study mainly examined the integration of the notion of “trust” into resource management based on grace grid architecture that proposed by dr. buyya. this paper proposed a computing trust value method which based on dynamic changing rule function and constructed a grid trust model based on behavior. according to the demand of different application environment, this paper improved the grid economic model dbc scheduling algorithm and proposed time optimization, cost optimization and time-cost tradeoff optimization as his goal scheduling algorithms (trust dbc) based on trust. the performance of these algorithms is excelled the algorithm without considering trust via theory analysis and simulation experiment.

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