网格环境下用并行路径传输文件的仿真与实现

文件传输时间的长短是评判一种传输机制传输效率的直接因素。本文针对如何提高大数据量文件的传输效率提出了一种新的传输方式。目的是为了缓解文件传输时网络发生拥塞或因带宽利用率不高时而出现无法传输的现象。本文主要研究了使用并行路径传精大数据量文件，以及在传输过程中若遇到未知的网络状况导致文件无法传输时动态管理副本传输的可行性。这种文件传输方式在加快文件传输速率，减少文件传输时间，提高传输稳定性等方面有明显效果。既完成了该传输模型的仿真效果，又针对仿真程序的结果完成了具体实现。本文对此分析了传统的单一副本数据传输方法以及多副本数据传输方法的区别，最后通过仿真程序和实现程序对三种传输方法做了比较。实验证明，基于网格环境下自适应动态路径文件传输模型具有较好的传输性能。

The Simulation and Realization of Parallel-path Transmission Files in Gridding Circumstance

It is a direct factor that how long the file transmission uses judges the efficiency of transport mechanisms. In this paper, we introduce a new transmission method to advance the transmission efficiency of the large data files. The purpose is to relieve the phenomenon when the files are transferred, the congestion happened or because of the low utilization of bandwidth, the files can not be transferred. In this paper we study the use of parallel--path to transfer large data files, as well as the feasibility of dynamic management copy during transmission if the network conditions encountered an unknown file which leads to the files can not be transferred. The advantage of this transmission method is to speed up the file transferring rate, reduce the file transferring time and to enhance the stability of transmission. Not only the simulation result of the transmission model is completed, but also the result of simulation program is achieved concretely. In this article, we analyze the difference between the traditional single copy data transmission and the multiple copy data transmission, and finally, by the simulation and realization program, three transmission methods were compared. The experiments showed that the model of adaptive dynamic path file transmission based on gridding circumstance had good transmission performance.