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基于网格服务的GridFTP传输性能的研究 总被引:1,自引:0,他引:1
利用GT4提供的网格服务功能研究了基于网格服务的GridFTP数据传输的性能,分别在关闭网格服务环境下和开启网格服务环境下,观察利用GridFTP进行不同文件类型和大小的数据传输情况,分析了网格服务对GridFTP数据传输的影响,并针对目前GridFTP进行跨异构平台传输过程中存在的问题,提出了几种改进方法.实验结果表明,将网格服务应用于Grid-FTP数据传输,可以改善其传输性能,提高其传输质量. 相似文献
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基于GridFTP的并行数据传输性能分析与研究 总被引:1,自引:0,他引:1
分析论述了广域网格网络中数据传输的需求以及网格数据传输协议—GridFTP的性能特点,对GridFTP中最重要的并行传输机制进行了探讨。通过大量实验测试对不同并行度下数据传输的时间、带宽、吞吐量、数据传输总量等性能参数进行了比较,讨论了并行度对传输性能的影响,提出了并行传输机制在提高传输性能方面的局限和值得注意的问题。 相似文献
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基于网格服务的网格环境下数据传输 总被引:1,自引:0,他引:1
网格环境下的数据访问需要一种能够跨异构平台进行数据传输的机制,但是,现有的GridFTP协议存在某些情况下无法跨防火墙进行数据传输的局限。为解决这一问题,论文提出了一种基于网格服务进行数据传输的方法,使用数据压缩、并行数据传输、缓冲区调整技术改善了该传输方法的性能;基于传输日志实现了故障恢复,提高了数据传输的可靠性。最后使用Globus工具集实现了这种数据传输方法,并进行了传输性能的分析。 相似文献
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网格数据传输协议GridFTP提供了安全可靠地传输大量数据的能力.但是目前的最新网格中间件GT4中,GridFTP只提供了一些命令和API,一般用户使用GridFTP很不方便.在研究GT4 GridFTP的基础上,借助JavaCoG设计和实现了一个可视化的网格数据传输工具--NGridFTP,NGridFTP实现了网格数据的上传下载、并行传输、三方传输等主要功能.对大数据的并行传输实验表明,NGridFTP并行传输比传统传输具有优势,但在并行模型下,增加并行数并没有提高传输速度. 相似文献
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GridFTP是Globus项目组开发的一个用于支持网格远程数据传输的一种基本的数据访问和数据传输协议。在基于LinuX的GT3平台基础上,给出了GridFTP服务器配置和测试的步骤,实现了GridFTP服务器的构架;研究了GfidFTP第三方控制数据传输的体系结构,描述了第三方控制数据传输过程,给出了第三方控制数据传输的客户端编程实现模式。 相似文献
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针对农业信息网格环境中系统负载不均衡和数据传输服务性能不高的问题,结合经典的Globus平台GridFTP传输技术和P2P技术,提出了一种P2SP(pcer to sever&peer,用户对服务器和用户)模式的农业信息网格资源调度方法.该方法既保证了系统的负载均衡性,又提高了数据传输的性能和质量,实验证明该方法是一种可行的信息网格资源调度方法. 相似文献
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GridFTP作为网格环境中安全高效的数据传输协议,是对标准FTP协议的扩展。文中介绍了GridFTP的特性、实现及性能,分析了该协议的的发展前景,并详细说明了Linux系统中配置GridFTP服务的步骤。GridFTP由于具备标准FTP所没有的第三方控制传输、并行传输等新特征,已成为主要的网格数据传输协议。 相似文献
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Alireza Poshtkohi M.B. Ghaznavi-Ghoushchi 《Parallel Computing》2011,37(2):114-136
DotGrid platform is a Grid infrastructure integrated with a set of open and standard protocols recently implemented on the top of Microsoft .NET in Windows and MONO .NET in UNIX/Linux. DotGrid infrastructure along with its proposed protocols provides a right and solid approach to targeting other platforms, e.g., the native C/C++ runtime. In this paper, we propose a new concurrent file transfer protocol called DotDFS as a high-throughput distributed file transfer component for DotGrid. DotDFS introduces some open binary protocols for efficient file transfers on current Grid infrastructures. DotDFS protocol also provides mechanisms for multiple file streams to gain high-throughput file transfer similar to GridFTP protocol, but by proposing and implementing a new parallel TCP connection-oriented paradigm. Almost no research work has been conducted to suggest a concurrent file transfer protocol that simultaneously employs threaded and event-driven models in the protocol level. Due to our knowledge, DotDFS is the first concurrent file transfer protocol that, from this viewpoint, presents a new computing paradigm in the field of data transmission protocols. In our LAN tests, we have achieved better results than Globus GridFTP implementation particularly in multiple TCP streams and directory tree transfers. Our LAN experiences in memory-to-memory tests show that DotDFS accesses to the 94% bottleneck bandwidth while GridFTP is accessing 91%. In LAN disk-to-disk tests, comparing DotDFS protocol with GridFTP protocol unveils a set of interesting and technical problems in GridFTP for both the nature of the protocol and its implementation by Globus. In the WAN experimental studies, we propose a new idea for analytical modeling of file transfer protocols like DotDFS inspired by sampling, experimentation and mathematical interpolation approaches. The cross-platform and open standard-based features of DotDFS provide a substantial framework for unifying data access and resource sharing in real heterogeneous Grid environments. 相似文献
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通过分析传统C/S数据传输模型的不足,介绍了GridFTP第三方控制数据传输的概念、模型结构和工作流程.在此基础上,深入研究了GridFTP基于可靠文件传输RFT(Reliable File Transfer)服务的第三方控制数据传输的模型结构、RFT服务架构、实现细节以及扩展数据块工作模式,指出GridFTP协议能够满足网格平台数据传输的需要. 相似文献
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In this paper we introduce and describe the highly concurrent xDFS file transfer protocol and examine its cross-platform and cross-language implementation in native code for both Linux and Windows in 32 or 64-bit multi-core processor architectures. The implemented xDFS protocol based on xDotGrid.NET framework is fully compared with the Globus GridFTP protocol. We finally propose the xDFS protocol as a new paradigm of distributed systems for Internet services, and data-intensive Grid and Cloud applications. Also, we incrementally consider different developmental methods of the optimum file transfer systems, and their advantages and disadvantages. The vision of this paper tries as possible to minimize the overhead concerned with the file transfer protocol itself and to examine optimal software design patterns of that protocol. In all disk-to-disk tests for transferring a 2 GB file with or without parallelism, the xDFS throughput at minimum 30% and at most 53% was superior to the GridFTP. 相似文献