The documents distributed by this server have been provided by the contributing authors as a means to ensure timely dissemination of scholarly and technical work on a noncommercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.
Publications of SPCL
|P. Geoffray and T. Hoefler:|
|Adaptive Routing Strategies for Modern High Performance Networks|
(. Vol , Nr. , In 16th Annual IEEE Symposium on High Performance Interconnects, HOTI'08, presented in Stanford, CA, USA, pages 165-172, IEEE Computer Society, ISSN: , ISBN: 978-0-7695-3380-3, Aug. 2008)
AbstractToday's scalable high-performance applications heavily depend on the bandwidth characteristics of their communication patterns. Contemporary multi-stage interconnection networks suffer from network contention which might decrease application performance. Our experiments show that the effective bisection bandwidth of a non-blocking 512-node Clos network is as low as 38% if the network is routed statically. In this paper, we propose and analyze different adaptive routing schemes for those networks. We chose Myrinet/MX to implement our proposed routing schemes. Our best adaptive routing scheme is able to in- crease the effective bisection bandwidth to 77% for 512 nodes and 100% for smaller node counts. Thus, we show that our proposed adaptive routing schemes are able to improve network throughput significantly.