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IEICE TRANSACTIONS on Information

A Fully Optical Ring Network-on-Chip with Static and Dynamic Wavelength Allocation

Ahmadou Dit Adi CISSE, Michihiro KOIBUCHI, Masato YOSHIMI, Hidetsugu IRIE, Tsutomu YOSHINAGA

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Summary :

Silicon photonics Network-on-Chips (NoCs) have emerged as an attractive solution to alleviate the high power consumption of traditional electronic interconnects. In this paper, we propose a fully optical ring NoC that combines static and dynamic wavelength allocation communication mechanisms. A different wavelength-channel is statically allocated to each destination node for light weight communication. Contention of simultaneous communication requests from multiple source nodes to the destination is solved by a token based arbitration for the particular wavelength-channel. For heavy load communication, a multiwavelength-channel is available by requesting it in execution time from source node to a special node that manages dynamic allocation of the shared multiwavelength-channel among all nodes. We combine these static and dynamic communication mechanisms in a same network that introduces selection techniques based on message size and congestion information. Using a photonic NoC simulator based on Phoenixsim, we evaluate our architecture under uniform random, neighbor, and hotspot traffic patterns. Simulation results show that our proposed fully optical ring NoC presents a good performance by utilizing adequate static and dynamic channels based on the selection techniques. We also show that our architecture can reduce by more than half, the energy consumption necessary for arbitration compared to hybrid photonic ring and mesh NoCs. A comparison with several previous works in term of architecture hardware cost shows that our architecture can be an attractive cost-performance efficient interconnection infrastructure for future SoCs and CMPs.

Publication
IEICE TRANSACTIONS on Information Vol.E96-D No.12 pp.2545-2554
Publication Date
2013/12/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E96.D.2545
Type of Manuscript
Special Section PAPER (Special Section on Parallel and Distributed Computing and Networking)
Category

Authors

Ahmadou Dit Adi CISSE
  University of Electro-Communica-tions
Michihiro KOIBUCHI
  National Institute of Informatics
Masato YOSHIMI
  University of Electro-Communica-tions
Hidetsugu IRIE
  University of Electro-Communica-tions
Tsutomu YOSHINAGA
  University of Electro-Communica-tions

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