Argonne National Laboratory

UDT as an Alternative Transport Protocol for GridFTP

TitleUDT as an Alternative Transport Protocol for GridFTP
Publication TypeConference Paper
Year of Publication2009
AuthorsBresnahan, J, Link, M, Kettimuthu, R, Foster, IT
Date Published04/2009
Other NumbersANL/MCS-P1614A-0409

GridFTP has emerged as a de facto standard for secure, reliable, high-performance data transfer across resources on the Grid. By default,
GridFTP uses TCP as its transport-level communication protocol. It is well known that TCP Reno cannot provide satisfactory performance on high-speed, long-delay networks. In this paper, we describe how we enabled GridFTP to use UDT as an alternative transport-level communication protocol. We compare the performance of GridFTP over UDT with GridFTP over TCP on various test beds. We also study the impact of UDT on bulk TCP flows.