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A deterministic parallel scheduling algorithm for input queued crossbar switches

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4 Author(s)
Yanfeng Zheng ; Inst. of Comput. Technol., Chinese Acad. of Sci., Beijing, China ; Simin He ; Shutao Sun ; Wen Gao

Input-queued (IQ) switch architectures have become predominant in high-speed switching for the past decade. Maximum weight matching (MWM) algorithms are known to achieve 100% throughput under any admissible traffic. Unfortunately, MWM is impractical for its high computational complexity O(N3). In this paper, we study a new type of approximate algorithm to MWM using local search technique. Instead of using randomized technique which is mainly used by the existing approximations, our algorithm runs in a deterministic way which is easy to be implemented by hardware. It provides 100% throughput under any admissible traffic and simulation results show that the proposed algorithm with only 3 iterations outperforms the existing approximations to MWM.

Published in:

Communications and Information Technology, 2005. ISCIT 2005. IEEE International Symposium on  (Volume:1 )

Date of Conference:

12-14 Oct. 2005

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