| AMS实验中的副本管理研究 |
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| 引用本文： | 马腾,罗军舟,王小鹏. AMS实验中的副本管理研究[J]. 华中科技大学学报(自然科学版), 2005, 33(Z1): 45-47 |
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| 作者姓名： | 马腾 罗军舟 王小鹏 |
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| 作者单位： | 东南大学,计算机科学与工程系,江苏,南京,210096 |
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| 基金项目： | 国家自然科学基金重大研究计划资助项目(90412014) |
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| 摘 要： | 提出了一种新的副本管理策略同时结合了预测和淘汰代价因素.通过预测副本在未来时间窗内的流行程度,热点副本被保留下来可以提高平均作业响应时间.代价因素主要关注的是副本的替换代价诸如网络延时和带宽,以及副本尺寸.经过使用OptorSim仿真器对AMS国际合作实验中数据的仿真模拟,比较副本管理策略和传统的替换算法的性能,结果表明管理策略在平均工作时间和带宽消耗方面取得了很好的平衡.
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| 关 键 词： | 数据网格 副本技术 淘汰算法 数据缓存 |
| 文章编号： | 1671-4512(2005)S1-0045-03 |
| 修稿时间： | 2005-09-01 |
Replica management research in AMS experiment |
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| Ma Teng,Luo Junzhou,Wang Xiaopeng. Replica management research in AMS experiment[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2005, 33(Z1): 45-47 |
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| Authors: | Ma Teng Luo Junzhou Wang Xiaopeng |
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| Affiliation: | Ma Teng Luo Junzhou Wang Xiaopeng Postgraduate,Dept.of Computer Sci.& Eng.,Southeast Univ.,Nanjing 210096,China. |
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| Abstract: | It has become a big challenge to manage large volume of data efficiently produced in E-science activity.In this paper,we will present a novel replica management strategy that combines history access information and cost factors together.Applying history access information in prediction model,hot spot replica is kept down.Cost factors are most concerned about network latency,bandwidth and replica size.By simulating AMS02 data access information in OptorSim to compare replica management strategy with traditional algorithms, our management strategy achieves a good balance between mean job time and bandwidth consumption. |
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| Keywords: | data grid replication technology replacement algorithm data cache |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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