共查询到20条相似文献,搜索用时 15 毫秒
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Grid resource management systems and schedulers are important components for building Grids. They are responsible for the
selection and allocation of Grid resources to current and future applications. Thus, they are important building blocks for
making Grids available to user communities. In this paper we briefly analyze the requirements of Grid resource management
and provide a classification of schedulers. Then, we define an extensible formal model for Grid scheduling activities, and
characterize the general Grid scheduling problem. Finally, we provide a reference architecture for the support of our model
and discuss different aspects of architectural implementations. 相似文献
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Grid computing technology is developing in an impressing speed these years. This paper is going to do some detailed analysis on two of the major Grid projects, Globus and Legion, in order to find out the key technologies of Grid computing. In this paper, three key technologies will be discussed: Grid Architecture, Grid Data and Resource Services, and Grid Security Services. Different implementation of these technologies will be discussed and compared with each other, some new ideas about these technologies will be proposed as well. 相似文献
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网格计算环境中可视化技术的研究 总被引:1,自引:0,他引:1
Visualization research is one of the critical techniques in the Grid computing.In this paper a visual method is used to implement a distributed parallel computing program which makes the node point‘‘s status of the parallel system visible during the program‘‘s running time.At the end of the paper,the implementation of the visiual algorithm is given. 相似文献
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网格环境下的作业运行支持系统支持用户在网格资源上远程提交作业任务,执行科学计算应用程序,并管理运行着的作业任务.作业运行支持系统解决了计算执行环境的准备、状态监视汇报、运行时操纵和I/O支持等方面的关键问题.现有的几种主要的网格中间件系统均提供了作业执行和管理工具,很好地解决了几个主要问题,但并不能完全满足用户的需要,还需进一步改进与完善. 相似文献
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中国国家网格作业管理设计与实现 总被引:3,自引:0,他引:3
基于中国国家网格(CNGrid)及其系统软件CNGrid GOS,提出并实现了一种VegaBatch网格作业管理系统。VegaBatch通过基于队列长度预测的元调度策略解决了网格作业调度问题;利用双重同步机制维护全局网格作业信息视图;借助用户身份切换机制保障作业数据安全;增加作业重执行功能提供数据后处理能力。对比了国际上较为成熟的网格作业管理软件,讨论了VegaBatch解决的问题。该软件目前已部署在CNGrid环境,提供了功能丰富、安全可靠的网格作业管理功能,降低了CNGrid的使用管理成本,提升了用户体验。 相似文献
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网格环境中的资源和任务情况异常复杂,因此计算任务在各种资源之间的调度成为了一个关键的问题,启发式智能算法被证明是解决这类问题的有效算法.本文提出将遗传算法和改进的蚂蚁算法融合起来解决网格环境下的任务调度. 相似文献
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P. Kacsuk G. Dózsa J. Kovács R. Lovas N. Podhorszki Z. Balaton G. Gombás 《Journal of Grid Computing》2003,1(2):171-197
P-GRADE provides a high-level graphical environment to develop parallel applications transparently both for parallel systems and the Grid. P-GRADE supports the interactive execution of parallel programs as well as the creation of a Condor, Condor-G or Globus job to execute parallel programs in the Grid. In P-GRADE, the user can generate either PVM or MPI code according to the underlying Grid where the parallel application should be executed. PVM applications generated by P-GRADE can migrate between different Grid sites and as a result P-GRADE guarantees reliable, fault-tolerant parallel program execution in the Grid. The GRM/PROVE performance monitoring and visualisation toolset has been extended towards the Grid and connected to a general Grid monitor (Mercury) developed in the EU GridLab project. Using the Mercury/GRM/PROVE Grid application monitoring infrastructure any parallel application launched by P-GRADE can be remotely monitored and analysed at run time even if the application migrates among Grid sites. P-GRADE supports workflow definition and co-ordinated multi-job execution for the Grid. Such workflow management can provide parallel execution at both inter-job and intra-job level. Automatic checkpoint mechanism for parallel programs supports the migration of parallel jobs inside the workflow providing a fault-tolerant workflow execution mechanism. The paper describes all of these features of P-GRADE and their implementation concepts. 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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随着新技术的不断涌现以及企业对于商业应用服务的需求,人们对ASP服务模型的探讨又活跃了起来。本文比较了网格环境下的P2P,web服务等技术,指出了web服务技术能将各种分布的、异构的、由单一企业提供或者由各外部共享资源和应用服务提供商联合提供的动态服务整合起来的特性,并分析了ASP的演化将由传统的一对多模式转向web服务的趋势。最后结合具体的科研项目,提出了一种通用的ASP服务模型,还探讨了它在实际应用中的价值。 相似文献
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Traditional distributed filesystem technologies designed for local and campus area networks do not adapt well to wide area Grid computing environments. To address this problem, we have designed the Chirp distributed filesystem, which is designed from the ground up to meet the needs of Grid computing. Chirp is easily deployed without special privileges, provides strong and flexible security mechanisms, tunable consistency semantics, and clustering to increase capacity and throughput. We demonstrate that many of these features also provide order-of-magnitude performance increases over wide area networks. We describe three applications in bioinformatics, biometrics, and gamma ray physics that each employ Chirp to attack large scale data intensive problems. 相似文献
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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