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介绍了网格中间件NetSolve的体系结构及其工作过程,讨论了使用NetSolve软件搭建数值计算网格的基本过程,以简单实例说明如何调用计算网格的计算服务。 相似文献
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基于Web Service的数值计算网格平台研究 总被引:1,自引:1,他引:0
在自强2000高性能集群计算机应用环境中使用NetSolve时,发现该系统存在一些问题。针对这些问题,结合Web Service技术提出了一种应用于高性能计算的网格系统,对该系统的体系结构进行了探讨。该系统有效地把高性能计算资源和网格技术结合在一起,取得了良好的应用效果。 相似文献
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对于网格计算工具包NetSolve的分析与研究 总被引:2,自引:0,他引:2
系统地研究了高性能计算的网格应用中间件NetSolve系统的结构和工作原理,并对服务器端进行了深入探讨,指出了现有实现存在的缺陷,对改进方案进行了分析。 相似文献
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利用网格技术基于开放式架构、通用技术规范以及标准中间件技术支持等优点,把分布的结构状态评估资源整合为网格服务,并在此基础上进行管理和调度,构建了基于网格的桥梁远程状态评估系统。设计了基于语义Web服务的网格服务模型来规范化服务的建模;结合Globus Toolkit 4(GT4)中间件,开发了网格服务管理模块,支持服务注册、搜索等功能;构建了基于agent技术的网格任务管理模块,支持结构状态评估任务的分解、分配、调度等功能。以洞庭湖大桥结构健康监测为背景,建立了应用原型。实践表明:系统能有效支持结构健康监 相似文献
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基于OGSA的服务网格应用系统研究与设计 总被引:2,自引:0,他引:2
为提高资源的共享能力,在校园网环境下,借助于Globus平台搭建了校园服务网格应用系统.该系统将已有的计算资源和服务,利用网格环境中日臻成熟的中间件技术设计了满足特定需求的服务网格系统构架.提出了基于OGSA-GT3的校园服务网格应用系统的结构CSGA,讨论了CSGA的实现方案和执行流程.在开发的原型系统进行了计算服务的实现,并阐述了服务网格系统今后的研究方向. 相似文献
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基于代理的网格计算中间件 总被引:11,自引:0,他引:11
WADE系统是基于代理技术实现的一个可屏蔽异构和分布性的动态自适应的校园计算网格,提出了基于代理技术在校园网络内实现并行计算的方法,详细论述了基于代理的网格计算中间件的体系结构和主要模块功能,阐述了利用代理实现异构编译、协同计算的过程,给出了代理的Java实现方法,利用软件代理实现网格计算中间件,可以解决异构计算平台下多种并行编程环境的协同计算问题,为用户提供统一的服务接口,这将大大增强系统的可用性。 相似文献
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分析了原有的药物网格系统在可扩展性和互操作性方面存在的问题,借助于Web服务和网格的主流标准技术,设计了基于WSRF(Web Services Resource Framework)的药物网格分层结构.讨论了基于该结构Web服务的实现,最后通过实验对新的药物网格平台进行了测试和分析. 相似文献
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网格技术是当前网络计算的前沿领域,基于Web服务技术构建网格系统有助于提高网格系统的可扩展性和互操作能力,是这一领域中的最新热点.但现有的工作尚未明确界定基于Web服务的网格的功能模型和实现机制.首先讨论了网格功能模型,基于OGSA(open grid service architecture)框架提出了基于Web服务的网格层次体系结构,并将Web服务工作流引入到网格任务描述中,给出一种Web服务与网格技术相融合的机制,介绍了基于Web服务的网格支撑环境WebSASE4G的总体结构和设计原理,为基于Web 相似文献
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The WS-Mediator framework employs an off-the-shelf mediator architecture and resilience-explicit computing in pursuit of dependable, dynamic Web services integration. Web services and service-oriented architectures (SOAs) represent a new paradigm for building distributed computing applications. Web services offer advantages over conventional distributed computing middleware platforms. Web services' loosely coupled architecture, combined with their standardized interoperability, lead to a new computing paradigm that supports the construction of more flexible and dynamic distributed applications 相似文献
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Today grid applications require not only lots of computational power but data at a very large scale too. Although grid computing was initially conceptualized as the technology that focuses on solving compute-intensive problems, this focus has gradually shifted to applications where data is distributed over various locations. Access to these data resources stored in heterogeneous grid storage systems located at geographically distributed virtual organizations in an integrated and uniform way is a challenging problem. The Web Services Resource Framework (WSRF) has recently emerged as the standard for the development and integration of grid services. This paper proposes and presents Gravy4WS, a middleware architecture based on WSRF Web services that enables the dynamic access to virtualized grid data resources. A novel scheduling algorithm called DCE (Delegating-Cluster-Execution based Scheduling) is proposed to improve load balancing of the system. The implementation of Gravy4WS using WSRF libraries and services provided by Globus Toolkit 4 is described together with its performance evaluation. 相似文献
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An increasing demand for interoperable applications exists, sparking the real-time exchange of data across borders, applications, and IT platforms. To perform these tasks, enterprise computing now encompasses a new class of groundbreaking technologies such as Web services and service-oriented architecture (SOA); business process integration and management; and middleware support, like that for utility, grid, peer-to-peer, and autonomic computing. Enterprise computing also influences the processes for business modeling, consulting, and service delivery; it affects the design, development, and deployment of software architecture, as well as the monitoring and management of such architecture. As enterprises demand increasing levels of networked information and services to carry out business processes, IT professionals need conferences like EDOC to discuss emerging technologies and issues in enterprise computing. For these reasons, what started out as the Enterprise Distributed Object Computing (EDOC) conference has come to encompass much more than just distributed objects. So this event now used the name International EDOC Enterprise Computing Conference, to recognize this broader scope yet also retain the initial conference's name recognition. 相似文献
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Web Services是一种在Internet上进行分布式计算的新思路,它引出了新一代的企业应用集成(Enterprise Application Integration,EAI)的发展.首先分析了传统中间件技术在异构系统集成中所遇到的一些问题,然后介绍了Web Services的体系结构和优点,并在此基础上介绍了Apache Axis框架的组成部分、体系结构以及其处理SOAP消息的流程,并用实例阐述了如何利用Apache Axis开发和使用一个Web Services的全过程. 相似文献
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网格环境中一种有效的Web服务资源组织机制 总被引:11,自引:0,他引:11
Web服务资源的有效组织与获取是网格计算中的关键性问题.基于OGSA(open grid service architecture)框架提出了一种有效的网格Web服务资源组织体系模型,它将Web服务资源的逻辑结构与物理资源组织分开,以层次结构的Web服务解析系统(Web services name system,WSNS)来进行Web服务资源查找与定位,以区域自治系统(area autonomy system,AAS)来进行Web服务资源的维护.详细描述了该模型的实现机制、组织协议与数据结构.通过对模型的分析和对原型系统的模拟表明该模型是合理而有效的:它可以在较小开销下获得较满意的资源组织与定位性能,能适应网格Web服务资源的异构、复杂与动态性、多级的负载平衡和良好的可扩展性.’ 相似文献
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Agents, grids, and middleware are more closely related. We develop software architecture for two software projects: one involves infrastructure for distributed, pervasive computing; the other involves partitioning huge data sets across data grids consisting of thousands of PCs. On the surface, these projects seem very different, but there are similarities and lessons we can learn from comparing them that have implications for agents, grids, Web services, pervasive computing, and middleware. 相似文献