Hassen, F and Mhamdi, L (2016) A Clos-Network Switch Architecture based on Partially-Buffered Crossbar Fabrics. In: High-Performance Interconnects (HOTI), 2016 IEEE 24th Annual Symposium on. IEEE Hot Interconnects - 24th Annual Symposium on High-Performance Interconnects, 23-26 Aug 2016, Santa Clara, CA, USA. IEEE ISBN 978-1-5090-2854-2
Abstract
Modern Data Center Networks (DCNs) that scale to thousands of servers require high performance switches/routers to handle high traffic loads with minimum delays. Today’s switches need be scalable, have good performance and -more importantly- be cost-effective. This paper describes a novel threestage Clos-network switching fabric with partially-buffered crossbar modules and different scheduling algorithms. Compared to conventional fully buffered and buffer-less switches, the proposed architecture fits a nice model between both designs and takes the best of both: i) less hardware requirements which considerably reduces both the cost and the implementation complexity, ii) the existence of few internal buffers allows for simple and highperformance scheduling. Two alternative scheduling algorithms are presented. The first is scalable, it disperses the control function over multiple switching elements in the Clos-network. The second is simpler. It places some control on a central scheduler to ensure an ordered packets delivery. Simulations for various switch settings and traffic profiles have shown that the proposed architecture is scalable. It maintains high throughput, low latency performance for less hardware used.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
Keywords: | Data Center Networks switching fabric; Clos-network; Partially-buffered; Packet scheduling |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Communication & Power Networks (Leeds) |
Funding Information: | Funder Grant number EU - European Union 322250 |
Depositing User: | Symplectic Publications |
Date Deposited: | 29 Sep 2016 09:19 |
Last Modified: | 01 Jul 2017 16:57 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/HOTI.2016.020 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:105248 |