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网格计算的研究新进展 总被引:21,自引:0,他引:21
孙培德 《计算机工程与应用》2003,39(16):65-69,72
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,区别于传统的分布式计算。文章简述了网格计算的定义、特点、功能和基本体系结构,重点综述了网格的研究新进展及其商业化应用前景,分析了当前网格研究的发展趋势及其我国的对策。 相似文献
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贾玉罡 《数字社区&智能家居》2007,(9):1236-1237
网格计算是一种新型的分布计算技术。文章介绍了网格系统的概念、特点、功能,阐述了网格的体系结构。并对网格计算技术的应用前景作了分析。 相似文献
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网格计算是一种新型的计算模式,具有数据处理能力强和运行成本低的特点。近年来,有关网格计算系统的安全性设计越发受到关注,但现有的网络安全技术在处理复杂的、动态的网格计算系统时,在访问控制、权限授予等环节的效果并不理想。首先分析了网格计算系统的安全性需求,其次研究并借鉴了现有颇具代表性的网络安全架构,最后我们从网格安全设计和实现的角度,对网格计算系统提出一种新的安全体系结构模型,并深入讨论了网格计算系统中各实体间交互时所采取的相应安全策略。 相似文献
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通过推导,得出了几种不同连接网格计算系统的加速比和效率计算公式,为构造网格计算系统和评价网格任务分法算法的效率提供了理论依据,并为进一步研究其它拓扑结构的分布式计算系统打下了基础。 相似文献
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由于资源具有异构、动态等特性,计算网格环境下的调度就成了一个非常复杂且具有挑战性的问题.介绍网格任务调度的研究现状,分析网格任务调度算法的基本原理.提出一种网格计算任务调度模型. 相似文献
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A Survey on Wireless Grid Computing 总被引:3,自引:0,他引:3
Wireless Grid computing extends the traditional Grid computing paradigm to include a diverse collection of mobile devices
enabled to communicate using radio frequency, infrared, optical and other wireless mechanisms. Among the devices coming into
use in wireless grid implementations are tiny sensors, Radio Frequency Identification tags (RFID). Personal Digital Assistants
(PDAs) and paging devices, cellular phones, hand-held or wearable computers, laptop computers and special purpose computers
embedded into many modern appliances [8, 26, 29]. Though many of these devices were initially developed to serve a specific,
autonomous purpose, their potential for cooperation through the sharing of resources and capabilities, and the massive amounts
of resources available due to their numbers, is quickly leading to applications resembling traditional Grid computing.
This paper presents a survey of the current state of wireless grid computing. This includes a discussion of the cooperation
between wired and wireless grids including ways in which wireless grids extend the capabilities of existing wired grids. It
also discusses many of the new capabilities and resources available to wireless grid devices and a sampling of several applications
of these new resources. It provides a sampling of many current research endeavors in the wireless grid arena and an examination
of a number of the potential challenges resulting from the unique characteristics of wireless grid devices. 相似文献
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本文首先阐述了网格技术的起源,分类及发展状况,接着对网格的两种体系结构——五层沙漏结构和开放网格互连体系结构进行了比较,最后对OGSA的主要实现框架机制进行了剖析。 相似文献
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Antonio J. Nebro Enrique Alba Francisco Luna 《Soft Computing - A Fusion of Foundations, Methodologies and Applications》2007,11(6):531-540
This paper analyzes some technical and practical issues concerning the use of parallel systems to solve multi-objective optimization
problems using enumerative search. This technique constitutes a conceptually simple search strategy, and it is based on evaluating
each possible solution from a given finite search space. The results obtained by enumeration are impractical for most computer
platforms and researchers, but they exhibit a great interest because they can be used to be compared against the values obtained
by stochastic techniques. We analyze here the use of a grid computing system to cope with the limits of enumerative search.
After evaluating the performance of the sequential algorithm, we present, first, a parallel algorithm targeted to multiprocessor
systems. Then, we design a distributed version prepared to be executed on a federation of geographically distributed computers
known as a computational grid. Our conclusion is that this kind of systems can provide to the community with a large and precise set of Pareto fronts that
would be otherwise unknown. 相似文献
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Vega: A Computer Systems Approach to Grid Computing 总被引:4,自引:0,他引:4
In this paper, we contrast four approaches for Grid computing, and discuss a computer systems approach in detail. This approach views a Grid as a distributed computer system, and its main concerns are systems abstractions and constructs, such as the Grid equivalents of computer architecture, address space, process, device, file system, user/developers interface. Following this methodology, we identified several essential issues, developed a Vega Grid systems architecture, and proposed several systems techniques such as Grid routers, Grid address spaces, Grid process (grip), Grid community (agora), and a Grid Service Markup Language (GSML) software suite. We evaluated the computer systems approach and the associated techniques by discussing an OSGA-compliant Grid system software implementation and a travel agency example. 相似文献
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容错服务是分布计算系统正常运作的有力保障。该文在一个基于多Agent的校园网格计算原型系统基础上,根据网格计算以及网格应用的本质,提出了网格容错服务的特征,采用Agent分而治之,自主容错的策略,将自主容错服务作为基础服务部署在校园网格计算原型系统的三个Agent层上,并对其实现和运作机制进行了详细的论述。 相似文献