Hayat: Harnessing Dark Silicon and variability for aging deceleration and balancing

Dennis Gnad, Muhammad Shafique, Florian Kriebel, Semeen Rehman, Duo Sun, Jörg Henkel

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Elevated power densities result in the so-called Dark Silicon constraint that prohibits simultaneous activation of all the cores in an on-chIP system (in the full performance mode) to respect the safe thermal limits, thus enforcing a significant amount of on-chIP resources to stay 'dark' (i.e., power-gated). In this paper, we show that how Dark Silicon together with the manufacturing process induced variability can be harnessed to mitigate reliability threats in the nano-era. In particular, we propose a run-time system Hayat∗ that harnesses Dark Silicon to decelerate and/or balance temperature-dependent aging, while also considering variability in order to improve the overall system performance for a given lifetime. Experimental evaluation across a range of chIPs to account for process variations illustrates that our Hayat system can provide a significant aging/performance improvement and decelerates the chIP aging by 6 months - 5 years (depending upon the required lifetime constraint) compared to state-of-the-art techniques.

Original languageEnglish (US)
Title of host publication2015 52nd ACM/EDAC/IEEE Design Automation Conference, DAC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781450335201
StatePublished - Jul 24 2015
Event52nd ACM/EDAC/IEEE Design Automation Conference, DAC 2015 - San Francisco, United States
Duration: Jun 8 2015Jun 12 2015

Publication series

NameProceedings - Design Automation Conference
ISSN (Print)0738-100X


Other52nd ACM/EDAC/IEEE Design Automation Conference, DAC 2015
Country/TerritoryUnited States
CitySan Francisco


  • Aging
  • Dark Silicon
  • Multi-Core
  • Optimization
  • Process Variations
  • Reliability
  • Soft Error
  • Temperature

ASJC Scopus subject areas

  • Computer Science Applications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Modeling and Simulation


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