UDT: Breaking the Data Transfer Bottleneck

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UDT: Breaking the Data Transfer Bottleneck

UDT is an application level data transport protocol for emerging distributed data intensive applications over wide area high-speed networks. UDT uses UDP to transfer bulk data and it has its own reliability control and congestion control mechanisms. This new protocol is not only for private or QoS-enabled links, but also for shared networks. Furthermore, UDT is also a highly configurable framework that can accommodate various congestion control algorithms. (Presentation: PPT 311KB)

Key Features

Fast. UDT is designed for extremely high speed networks and it has been used to support global data transfer of terabyte sized data sets.

Fair and Friendly. Concurrent UDT flows can share the available bandwidth fairly, while UDT also leaves enough bandwidth for TCP.

Easy to Use. UDT resides completely at the application level. Users can simply download the software and start to use it. No kernel reconfiguration is needed. In addition, UDT's API is very similar to the traditional socket API so that existing applications can be easily modified.

Highly Configurable. UDT supports user defined congestion control algorithms with a simple configuration. Users may also modify UDT to suit various situations. This feature can also be used by students and researchers to investigate new control algorithms.

Firewall Friendly. UDT is completely based on UDP, which makes it easier to traverse the firewall. Starting from UDTv4, multiple UDT flows can share one UDP port, thus a firewall can open only one UDP port for all UDT connections. UDT also supports rendezvous connection setup.

November 9, 2007: Visti us at the upcoming Supercomputing Conference!National Center for Data Mining will be at the annual Supercomputing Conference to be held in Reno, NV during November 11 - 17. We will demonstrate UDT version 4 for high speed data transfer over International network testbeds, together with other high performance distributed applications. UDT will also be used in our entry to this year's Bandwidth Challenge. You are welcome to visit us at exhibition booth #2623.

October 26, 2007: UDT version 4.0 Release UDTv4 is the latest version of the new versatile high speed UDP-based data transfer protocol. One of the major improvement from UDTv3 is that UDTv4 can bind multiple UDT sockets on the same UDP port. UDTv4 also greatly improved the configurable congestion control (CCC) module as its native control algorithm is also written based on CCC. Finally, in order to reach a wider audience, we have released UDTv4 under BSD license.

June 4, 2007: USA-Russia Lightpath Enables Fast Data Transfer of Terabyte-sized Scientific Datasets UDT helped to reach 711Mb/s (peak 844Mb/s) disk-disk data transfer between US and Russia. Scientists from US and Russia successfully moved 1.4 TeraBytes (TB) of data in about 4.5 hours over a 1 Gbps lightpath between Chicago and Moscow as part of the Teraflow Network initiative. This event, which represents the highest performance information transfer ever recorded between these two countries, was made possible by a unique international organizational partnership. More...