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A Stacked Mesh 3D NoC Architecture Enabling Congestion-Aware and Reliable Inter-layer Communication

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5 Author(s)
Amir-Mohammad Rahmani ; Turku Centre for Comput. Sci. (TUCS), Turku, Finland ; Khalid Latif ; Pasi Liljeberg ; Juha Plosila
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In this paper, an efficient architecture to optimize system performance, power consumption, and reliability of stacked mesh 3D NoC is proposed. Stacked mesh is a feasible architecture which takes advantage of the short inter-layer wiring delays, while suffering from inefficient intermediate buffers. To cope with this, an inter-layer communication mechanism is developed to enhance the buffer utilization, load balancing, and system fault-tolerance. The mechanism benefits from a congestion-aware and bus failure tolerant routing algorithm for vertical communication. To estimate the efficiency of the proposed architecture, the system has been simulated using uniform, hotspot 10%, and Negative Exponential Distribution (NED) traffic patterns. In addition, a video conference encoder has been used as a real application for system analysis. Our extensive experiments show significant power and performance improvements compared to a typical stacked mesh 3D NoC.

Published in:

2011 19th International Euromicro Conference on Parallel, Distributed and Network-Based Processing

Date of Conference:

9-11 Feb. 2011