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| 计算网格环境下一个统一的资源映射策略 |
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丁箐1,2, 陈国良1,2, 顾钧3
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1.中国科学技术大学,计算机科学与技术系,安徽,合肥,230027;2.国家高性能计算中心,安徽,合肥,230027;3.香港科技大学,计算机系,香港
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| 摘要: |
| 由于资源具有广域分布、异构、动态等特性,计算网格环境下资源的管理和调度是一个非常复杂且具有挑战性的问题.提出了计算网格环境下一组相互独立的计算任务(meta-task)的资源映射策略.该策略采用重复映射方法,以更好地适应网格计算环境下的动态性和自治性.算法考虑到任务的输入数据位置对映射效果的影响;通过定义效益函数,该策略在追求较小的任务完成时间的同时兼顾任务的服务质量(QoS)需求.模拟实验结果显示,该映射策略更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. |
| 关键词: 计算网格 资源映射 效益启发式 |
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| 基金项目:国家重点基础研究发展规划973资助项目(G1998030403) |
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| A Unified Resource Mapping Strategy in Computational Grid Environments |
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DING Qing,CHEN Guo-liang,GU Jun
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| Abstract: |
| The management of resources and scheduling computations in a grid environment is a complex undertaking, mainly due to resource抯 geographic distribution, heterogeneity, distributed ownership with different policies and priorities, varying loads, reliability, and availability conditions. A unified resource mapping strategy in computational grid environments is presented, which considers the input data repositories and QoS of tasks to mapping a set of independent tasks (meta-task) to resources. The repetitive mapping algorithm is more suitable for the dynamic adaptability and dimain autonomy in the grid.The henefit function heuristic adopted in the algorithm can ass ure the QoS of of tasks more effectively. |
| Key words: computational grid resource mapping benefit heuristic |
