The failure of TCP in high-performance computational grids
Proceedings of the 2000 ACM/IEEE conference on Supercomputing
Data management and transfer in high-performance computational grid environments
Parallel Computing - Parallel data-intensive algorithms and applications
Congestion control for high bandwidth-delay product networks
Proceedings of the 2002 conference on Applications, technologies, architectures, and protocols for computer communications
The End-to-End Performance Effects of Parallel TCP Sockets on a Lossy Wide-Area Network
IPDPS '02 Proceedings of the 16th International Parallel and Distributed Processing Symposium
Reliable Blast UDP: Predictable High Performance Bulk Data Transfer
CLUSTER '02 Proceedings of the IEEE International Conference on Cluster Computing
Delay-based congestion avoidance for TCP
IEEE/ACM Transactions on Networking (TON)
Experimental studies using photonic data services at IGrid 2002
Future Generation Computer Systems - iGrid 2002
Transport protocols for high performance
Communications of the ACM - Blueprint for the future of high-performance networking
Scalable TCP: improving performance in highspeed wide area networks
ACM SIGCOMM Computer Communication Review
Simple Available Bandwidth Utilization Library for High-Speed Wide Area Networks
The Journal of Supercomputing
TCP Vegas: end to end congestion avoidance on a global Internet
IEEE Journal on Selected Areas in Communications
Dynamic paths in multi-domain optical networks for grids
Future Generation Computer Systems - Special issue: High-speed networks and services for data-intensive grids: The DataTAG project
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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.