Loading...

TooT: An efficient and scalable power-gating method for NoC routers

Farrokhbakht, H ; Sharif University of Technology | 2016

747 Viewed
  1. Type of Document: Article
  2. DOI: 10.1109/NOCS.2016.7579326
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2016
  4. Abstract:
  5. With the advent in technology and shrinking the transistor size down to nano scale, static power may become the dominant power component in Networks-on-Chip (NoCs). Powergating is an efficient technique to reduce the static power of under-utilized resources in different types of circuits. For NoC, routers are promising candidates for power gating, since they present high idle time. However, routers in a NoC are not usually idle for long consecutive cycles due to distribution of resources in NoC and its communication-based nature, even in low network utilizations. Therefore, power-gating loses its efficiency due to performance and power overhead of the packets that encounter powered-off routers. In this paper, we propose Turn-on on Turn (TooT) which reduces the number of wake-ups by leveraging the characteristics of deterministic routing algorithms and mesh topology. In the proposed method, we avoid powering a router on when it forwards a straight packet or ejects a packet, i.e., a router is powered on only when either a packet turns through it or its associated node injects a packet. Experimental results on PARSEC benchmarks demonstrate that, compared with the conventional power-gating, the proposed method improves static power and performance by 57.9% and 35.3%, respectively, at the cost of a negligible area overhead. © 2016 IEEE
  6. Keywords:
  7. Energy Consumption ; Benchmarking ; Energy utilization ; Nanotechnology ; Routers ; Conventional power ; Deterministic routing algorithms ; Idle time ; Its efficiencies ; Net work utilization ; Power components ; Power gatings ; Utilized resources ; Network-on-chip
  8. Source: 10th IEEE/ACM International Symposium on Networks-on-Chip, NOCS 2016, 31 August 2016 through 2 September 2016 ; 2016 ; 9781467390309 (ISBN)
  9. URL: http://ieeexplore.ieee.org/document/7579326