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一种基于内存服务的内存共享网格系统

期刊名称：《计算机学报》2006年第29卷第7期
时间：0
分类：TP393[自动化与计算机技术—计算机应用技术;自动化与计算机技术—计算机科学与技术]
作者机构：[1]国防科学技术大学并行与分布处理国家重点实验室,长沙410073
相关基金：本课题得到国家“九七三”重点基础研究发展规划项目基金（2003CB317008.2005CB321801）和国家自然科学基金（60573135,90412011）资助.Background This work is supported by the National Basic Research Program of China （973 Program） Project ＂Aggregation and Coordination Mechanisms in Virtual Computing Environment＂. The Virtual Computing Environment （VCE） will be built on the open infrastructure of the Internet, through integrating distributed autonomous resources connected to the Internet, both of sharing and cooperating among resources become more effective and efficient. It can also exert the tremendous power of the resources on the Internet. The core mechanisms of the VCE are aggregation and coordination of network resources. The Internet resources have clearly demonstrated three primary characteristics called ＂growing＂, ＂autonomous＂ and ＂diverse＂, which contradict with the traditional method of centralized control in resource management. Therefore, we believe that the new way of aggregation and coordination could be natural to construct VCE. In this paper, the authors extend the traditional network memory scheme using service oriented computing and grid computing technologies, and design the RAM Grid system based on memory services. The approach implements the aggregation and coordination of memory resources in widearea network; it will be an important part of the VCE.
相关项目：网格文件系统关键技术研究

关键词：内存密集型, 内存服务, 内存网格, 页帧服务, 代理服务, memory-intensive, memory service, RAM grid, paging service, deputy service

中文摘要：

内存密集型应用对运行环境的物理内存要求严格，在物理内存不足时将会引发大量磁盘IO，降低系统性能．传统的网络内存致力于在集群内部通过共享空闲节点的物理内存解决该问题，但受集群负载和内部网络影响较大．通过结合网络内存和服务计算、网格计算等技术，提出一种基于内存服务的内存共享网格系统——内存网格，并分析和讨论了实现内存服务的关键技术和算法．内存网格弥补了网络内存的不足，扩展了网格计算的应用范围．通过基于真实应用运行状态的模拟，证明了内存网格与网络内存相比具有性能的提高．

英文摘要：

Many scientific computing applications demand a great amount of memory, which are usually run on supercomputers with large physical memory. The applications whose complete time is affected by memory capacity, is usually called memory-intensive applications. Many disk IO operations will be caused by memory-intensive applications due to insufficient physical memory of computing environment, which depress the system performance dramatically. Traditional network memory or memory server schemes try to share free memory of idle nodes in the cluster, while it is often influenced by heavy cluster loading or interior network congestion. Combining the network memory with current service computing and grid computing technology, a memory service based memory sharing grid system named RAM Grid, is proposed. RAM grid improve traditional network memory scheme, and extend the application area of grid computing. As one of the major computing resources, memory can be shared on the Internet through RAM grid, such as computing power and disk storage being shared through computational grid and data grid. The system criteria and properties are analyzed. One of the system schemes is also proposed in detail. Through the real trace based simulation, the performance of RAM Grid is evaluated and proved better than traditional network memory or disk IO obviously.

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