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SPONGE: a scalable pivot-based on/off gating engine for reducing static power in NoC routers

Farrokhbakht, H ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1145/3218603.3218635
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2018
  4. Abstract:
  5. Due to high aggregate idle time of Networks-on-Chip (NoCs) routers in practical applications, power-gating techniques have been proposed to combat the ever-increasing ratio of static power. Nevertheless, the sporadic packet arrivals compromise the effectiveness of power-gating by incurring significant latency and energy overhead. In this paper, we propose a Scalable Pivot-based On/Off Gating Engine (SPONGE) which efficiently manages power-gating decisions and routing mechanism by adaptively selecting a small set of powered-on columns of routers and keeping the others in power-gated state. To this end, a router architecture augmented with a novel routing algorithm is proposed in which a packet can traverse powered-off routers without waking them up, and can only turn in predetermined powered-on routers. Experimental results on SPLASH-2 benchmarks demonstrate that, compared to the conventional power-gating method, SPONGE on average not only improves static power consumption by 81.7%, it also improves average packet latency by 63%. © 2018 Association for Computing Machinery
  6. Keywords:
  7. Congestion ; Network-on-chip ; Pivot ; Power-gating ; Engines ; Low power electronics ; Network architecture ; Routers ; Average packet latencies ; Conventional power ; Networks on chips ; Power gatings ; Router architecture ; Static power consumption
  8. Source: Proceedings of the International Symposium on Low Power Electronics and Design23 July 2018 ; 23-25 July , 2018 ; 15334678 (ISSN) ; 9781450357043 (ISBN)
  9. URL: https://www.semanticscholar.org/paper/SPONGE%3A-A-Scalable-Pivot-based-On%2FOff-Gating-Engine-Farrokhbakht-Kamali/b70fd606f80d10713dc38b963dc4b5e756f9a657