PROTEUS: Rule-Based Self-Adaptation in Photonic NoCs for Loss-Aware Co-Management of Laser Power and Performance

Sairam Sri Vatsavai, Venkata Sai Praneeth Karempudi, Ishan Thakkar

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

The performance of on-chip communication in the state-of-the-art multi-core processors that use the traditional electronic NoCs has already become severely energy-constrained. To that end, emerging photonic NoCs (PNoC) are seen as a potential solution to improve the energy-efficiency (performance per watt) of on-chip communication. However, existing PNoC designs cannot realize their full potential due to their excessive laser power consumption. Prior works that attempt to improve laser power efficiency in PNoCs do not consider all key factors that affect the laser power requirement of PNoCs. Therefore, they cannot yield the desired balance between the reduction in laser power, achieved performance and energy-efficiency in PNoCs. In this paper, we present PROTEUS framework that employs rule-based self-adaptation in PNoCs. Our approach not only reduces the laser power consumption, but also minimizes the average packet latency by opportunistically increasing the communication data rate in PNoCs, and thus, yields the desired balance between the laser power reduction, performance, and energy-efficiency in PNoCs. Our evaluation with PARSEC benchmarks shows that our PROTEUS framework can achieve up to 24.5% less laser power consumption, up to 31% less average packet latency, and up to 20% less energy-per-bit, compared to another laser power management technique from prior work.

Original languageEnglish
Title of host publication14th IEEE/ACM International Symposium on Networks-on-Chip, NOCS 2020
ISBN (Electronic)9781728188478
DOIs
StatePublished - Sep 24 2020
Event14th IEEE/ACM International Symposium on Networks-on-Chip, NOCS 2020 - Hamburg, Germany
Duration: Sep 24 2020Sep 25 2020

Publication series

Name14th IEEE/ACM International Symposium on Networks-on-Chip, NOCS 2020

Conference

Conference14th IEEE/ACM International Symposium on Networks-on-Chip, NOCS 2020
Country/TerritoryGermany
CityHamburg
Period9/24/209/25/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Atomic and Molecular Physics, and Optics

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