Hardware-software collaborative thermal sensing in optical network-on-chip-based manycore systems

Mengquan Li, Weichen Liu, Nan Guan, Yiyuan Xie, Yaoyao Ye

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Continuous technology scaling in manycore systems leads to severe overheating issues. To guarantee system reliability, it is critical to accurately yet efficiently monitor runtime temperature distribution for effective chip thermal management. As an emerging communication architecture for new-generation manycore systems, optical network-on-chip (ONoC) satisfies the communication bandwidth and latency requirements with low power dissipation. Moreover, observation shows that it can be leveraged for runtime thermal sensing. In this article, we propose a brand-new on-chip thermal sensing approach for ONoC-based manycore systems by utilizing the intrinsic thermal sensitivity of optical devices and the inter-processor communications in ONoCs. It requires no extra hardware but utilizes existing optical devices in ONoCs and combines them with lightweight software computation in a hardware-software collaborative manner. The effectiveness of the our approach is validated both at the device level and the system level through professional photonic simulations. Evaluation results based on synthetic communication traces and realistic benchmarks showthat our approach achieves an average temperature inaccuracy of only 0.6648 K compared to ground-truth values and is scalable to be applied for large-size ONoCs.

Original languageEnglish
Article number118
Pages (from-to)1-24
JournalACM Transactions on Embedded Computing Systems
Volume18
Issue number6
DOIs
Publication statusPublished - Nov 2019

Keywords

  • Chip temperature monitoring
  • Embedded systems
  • Hardware/software co-design
  • Micro-ring resonators
  • Optical network-on-chip

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture

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