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Teraflows over Gigabit WANs with UDT

机译:使用UDT的千兆WAN上的Teraflow

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The TCP transport protocol is currently inefficient for high speed data transfers over long distance networks with high bandwidth delay products (BDP). The challenge is to develop a protocol which is fast over networks with high bandwidth delay products, fair to other high volume data streams, and friendly to TCP-based flows. We describe here a UDP-based application level transport protocol named UDT (UDP-based Data Transfer) with these properties and which is designed to support distributed data-intensive computing applications. UDT can utilize high bandwidth efficiently over wide area networks with high bandwidth delay products. Unlike TCP, UDT is fair to flows independently of their round trip times (RTT). In addition, UDT is friendly to concurrent TCP flows, which means it can be deployed not only on experimental research networks but also on production networks. To ensure these properties, UDT employs a novel congestion control approach that combines rate-based and window-based control mechanisms. In this paper, we describe the congestion control algorithms used by UDT and provide some experimental results demonstrating that UDT is fast, fair, and friendly. (c) 2004 Elsevier B.V. All rights reserved.
机译:对于具有高带宽延迟乘积(BDP)的长距离网络上的高速数据传输,TCP传输协议目前效率不高。挑战在于开发一种协议,该协议在具有高带宽延迟产品的网络上快速运行,对其他大量数据流公平,并且对基于TCP的流友好。我们在此描述具有这些属性的基于UDP的应用程序级传输协议UDT(基于UDP的数据传输),该协议旨在支持分布式数据密集型计算应用程序。 UDT可以通过具有高带宽延迟产品的广域网有效地利用高带宽。与TCP不同,UDT对于流独立于往返时间(RTT)而言是公平的。此外,UDT对并发TCP流友好,这意味着它不仅可以部署在实验研究网络上,而且可以部署在生产网络上。为了确保这些特性,UDT采用了一种新颖的拥塞控制方法,该方法结合了基于速率和基于窗口的控制机制。在本文中,我们描述了UDT使用的拥塞控制算法,并提供了一些实验结果,证明了UDT快速,公平和友好。 (c)2004 Elsevier B.V.保留所有权利。

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