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网格(Grid)被誉为继Internet和Web之后的第三次信息技术浪潮,网格计算可以满足海量商业数据分析所需的CPU资源要求。因此。Web服务技术与网格计算技术的融合,是推进知识型信息服务进一步发展的利器,它将极大地改变传统电子商务开发和运营模式.文章介绍了网格计算的特点、基本功能和体系结构,并对网格计算的应用和网格计算目前存在的问题做了分析.探讨了网格在知识型信息服务的应用及前景。 相似文献
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网格计算能够实现广域范围内异构平台的协同,是internet发展的高级形式,本文即以网格计算系统的特点,网格计算系统的目标和需要的关键技术而展开。 相似文献
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网格监控系统研究 总被引:4,自引:0,他引:4
The monitoring system is very critical for complex and large high-performance distributed system such as a Grid. With the help of a monitoring system the users and developers of a Grid can perform tasks such as fault-detec-tion and diagnosis, performance analysis and tuning and performance prediction. And a good monitoring system can give useful data to the scheduling module of the Grid. This paper gives a detailed presentation and analysis of the key techniques of a grid monitoring system, and points out the research directions of the grid monitoring system based on current research around the world. 相似文献
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网格技术的发展及其应用研究 总被引:5,自引:0,他引:5
网格计算是一个新出现的名词,也是近年来兴起的一个研究热点,它是以大规模的资源协作共享、创新的应用以及高性能计算为特点,诞生的一个全新领域。本文在阅读大量最新的国内外相关文献后,对网格计算的概念、特点、基本体系结构进行简要介绍,并详细分析了网格的研究现状、应用领域以及发展趋势。 相似文献
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网格计算的研究进展及应用前景 总被引:25,自引:0,他引:25
网格计算诞生了一个全新的领域,它以大规模的资源协作共享,创新的应用以及高性能计算的特点,区别于传统的分布计算,本文简述了网格计算的定义、特点、功能和基本体系结构,重点介绍了网格的研究新进展及其商业应用前景,分析了当前网格研究的现状和发展趋势及其对策。 相似文献
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应宏 《计算机技术与发展》2003,13(11)
网格是新型的分布计算和协同工作环境.文中首先介绍网格系统概念、特点和功能,阐述了网格系统的体系结构,包括:资源层、中间件层、界面层和应用层.接着讨论了网格系统的关键技术,重点分析了"五层沙漏结构"、网格操作系统的基本功能和安全认证技术.最后讨论了网格的应用领域,指出网格必将成为新一代网络计算模式. 相似文献
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This paper proposes a hierarchical control system in grid virtual organization. The hierarchical system can be decomposed into multiple application groups, which can be further decomposed into multiple applications. At the top of the hierarchy, the global controller controls the gross allocation of resources to the groups. At the next level down, the group controller coordinates the local deployments of all applications that consume the local allocation of resources. At the lowest level, the local controllers adjust the local resource usages to optimize the utility of single application. The hierarchical control system considers all applications and coordinates all layers of grid architecture upon any changes. According to different time granularity, we adopt a different control scheme. The global control considers all applications and coordinates three layers of grid architecture in response to large system changes at coarse time granularity, while local control adapts a single application to small changes at fine granularity. This paper adopts utility-driven cross layer optimization for grid applications to find a system wide optimization and solves the cross-layer optimization by using pricing based decomposition. A set of hierarchical utility functions is used to measure the performance of the grid system that follows the system, group and application hierarchy. This paper uses total utility to measure the overall quality of grid system. The experiments are conducted to test the performance of the hierarchical control algorithms.
相似文献
Layuan LiEmail: |
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主要介绍了虚拟化技术和网格计算技术的发展,以及虚拟化技术在网格计算中的应用.虚拟化技术是一种非常灵活的技术,利用它用户能够动态地实例化一个操作系统以执行他们需要的应用.为了使创建的虚拟机更加有效的参与网格计算,介绍了一种虚拟网络,它能够有效地将虚拟机连接到网络中,并且能够根据网络流的负荷动态地改变拓扑结构和路由路径,最后用parallels工作台创建了虚拟机,并且进行了相关实验. 相似文献
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该文提出虚拟战场攻防对抗仿真概念的内涵及其体系,简介了国内外发展现状;并讨论了虚拟战场攻防对抗仿真的研究内容、关键技术和技术难题;在仿真技术解决途径的论述中主要提出了基于grid的攻防对抗仿真平台模型,在基于VR&CG的分布式虚拟战场仿真技术中讨论了基于LOD的虚拟环境仿真技术、基于AI的虚拟兵力生成技术和基于造型动画技术的虚拟武器生成技术,在基于人工智能的攻防对抗仿真技术中提出了基于规则发现和多级反馈的数据采集及信息融合技术、基于多Agent & Grid智能决策支持系统;最后概述了虚拟战场攻防对抗的仿真技术的发展趋势。 相似文献
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Globus网格体系结构及其服务的实现 总被引:7,自引:2,他引:7
阐述了网格计算、虚拟组织的概念,对Glohus网格体系结构(构造层、连接层、资源层、汇集层和应用层)进行了剖析,并提出了网格服务实现的简单构想。 相似文献
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基于组件的机械系统虚拟样机可视化建模研究 总被引:2,自引:1,他引:1
应用组件技术,将机械系统虚拟样机分析系统设计为独立于几何模型的组件,这样简化了系统分析的复杂性,提高了可扩展性和可移植性。采用基于组件技术的三维引擎ACIS,重用其基本功能组件,实现了机械系统虚拟样机的几何构件体,约束和载荷的可视化建模。 相似文献
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Bruno Volckaert Pieter Thysebaert Marc De Leenheer Filip De Turck Bart Dhoedt Piet Demeester 《The Journal of supercomputing》2006,38(3):279-305
In this paper, a distributed and scalable Grid service management architecture is presented. The proposed architecture is
capable of monitoring task submission behaviour and deriving Grid service class characteristics, for use in performing automated
computational, storage and network resource-to-service partitioning. This partitioning of Grid resources amongst service classes
(each service class is assigned exclusive usage of a distinct subset of the available Grid resources), along with the dynamic
deployment of Grid management components dedicated and tuned to the requirements of a particular service class introduces
the concept of Virtual Private Grids. We present two distinct algorithmic approaches for the resource partitioning problem,
the first based on Divisible Load Theory (DLT) and the second built on Genetic Algorithms (GA). The advantages and drawbacks
of each approach are discussed and their performance is evaluated on a sample Grid topology using NSGrid, an ns-2 based Grid
simulator. Results show that the use of this Service Management Architecture in combination with the proposed algorithms improves
computational and network resource efficiency, simplifies schedule making decisions, reduces the overall complexity of managing
the Grid system, and at the same time improves Grid QoS support (with regard to job response times) by automatically assigning
Grid resources to the different service classes prior to scheduling. 相似文献
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为实现航天飞行器研制中性能样机模型的充分利用,提出了飞行器性能样机虚拟试验系统的总体方案,通过试验基础数据库、试验数据管理、验证辅助工具、虚拟试验应用等子系统划分和工作流程设计,提供对虚拟试验的全流程支持。系统突破了试验数据对象化管理、试验流程建模等关键技术,并基于虚拟试验支撑平台VITA完成了相应系统实现,在多个飞行器研制过程中开展了典型应用。 相似文献
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An Information Service for Grid Virtual Organization: Architecture, Implementation and Evaluation 总被引:1,自引:0,他引:1
Information Service is the heart of the entire Grid software infrastructure. It maintains various information in a Grid environment, and provides this information to users on request. We present an Information Service architecture for information capturing, aggregation, and provisioning in a Grid Virtual Organization (VO). This Information Service is a hierarchical structure which consists of VO layer, site layer and resource layer. The architecture defines downloadable and pluggable information sensors for portability and flexibility of information capturing. The meta-data mechanism is incorporated into our Information Service for information organization and management. Experiments were conducted to evaluate the performance of the Information Service, and the results show that the Information Service presents satisfactory scalability with number of users and number of information amount. Our Information Service has been implemented based on the Globus Toolkit as a Grid service compliant to the Open Grid Services Architecture (OGSA) specifications. 相似文献