White Papers

Enhancing TCP Performance for Dedicated Clusters and Grids

Overview TCP congestion control methods seriously and unnecessarily harm performance of network transmissions when used in dedicated clusters and grids. This paper presents a simple method in which congestion control can be disabled under appropriate circumstances while still addressing fairness issues and avoiding congestion collapse. The paper discusses a Linux-based implementation of this "Rude TCP" and demonstrates the performance benefits this change provides over one and ten gigabit Ethernet links in Linux - showing a factor of 20 improvement in some cases.

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Publisher
Los Alamos National Laboratory
File Format
PDF
Date Published
Jan 9, 2008
Format
White Papers
Topics
TCP - IP, Ethernet, High Performance Computing

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