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Power and Area Optimization of 3D Networks-on-Chip Using Smart and Efficient Vertical Channels

Amir-mohammad Rahmani, Kameswar Rao Vaddina, Pasi Liljeberg, Juha Plosila, Hannu Tenhunen, Power and Area Optimization of 3D Networks-on-Chip Using Smart and Efficient Vertical Channels. In: L. Ayala José, Braulio García-Cámara, Manuel Prieto, Martino Ruggiero, Gilles Sicard (Eds.), International Conference on Power and Timing Modeling, Optimization and Simulation (PATMOS'11), LNCS 6951, 278-287, Springer-Verlag, 2011.

Abstract:

3D NoC offers greater device integration, faster vertical interconnects and more power efficient inter-layer communication due to the beneficial attribute of short through silicon via (TSV) in 3D IC technologies. However, TSV pads used for bonding to a wafer layer, occupy significant chip area and result in routing congestions and expensive manufacturing process. This can lead to a significant reduction in 3D ICs' yield and higher power densities compared to 2D NoCs. In this paper, a power-efficient and low-cost inter-layer communication scheme is proposed as one way to mitigate these challenges. Instead of using a pair of unidirectional channels for inter-layer communication, utilizing a high-performance bidirectional channel enables a system to benefit from low-latency nature of the vertical interconnects and to remarkably reduce the number of TSVs. Additionally, we present a forecasting-based dynamic frequency scaling technique for reducing the power consumption of the inter-layer communication. Our extensive simulations demonstrate significant area and power improvements compared to a typical symmetric 3D NoC.

BibTeX entry:

@INPROCEEDINGS{iRaVaLiPlTe11a,
  title = {Power and Area Optimization of 3D Networks-on-Chip Using Smart and Efficient Vertical Channels},
  booktitle = {International Conference on Power and Timing Modeling, Optimization and Simulation (PATMOS'11)},
  author = {Rahmani, Amir-mohammad and Vaddina, Kameswar Rao and Liljeberg, Pasi and Plosila, Juha and Tenhunen, Hannu},
  volume = {LNCS 6951},
  editor = {José, L. Ayala and García-Cámara, Braulio and Prieto, Manuel and Ruggiero, Martino and Sicard, Gilles},
  publisher = {Springer-Verlag},
  pages = {278-287},
  year = {2011},
  keywords = {N/A},
}

Belongs to TUCS Research Unit(s): Communication Systems (ComSys)

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