Workload capacity considering NBTI degradation in multi-core systems

Jin Sun, Roman Lysecky, Karthik Shankar, Avinash Kodi, Ahmed Louri, Janet M. Wang

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

10 Scopus citations

Abstract

As device feature sizes continue to shrink, long-term reliability such as Negative Bias Temperature Instability (NBTI) leads to low yields and short mean-time-to-failure (MTTF) in multi-core systems. This paper proposes a new workload balancing scheme based on device level fractional NBTI model to balance the workload among active cores while relaxing stressed ones. The proposed method employs the Capacity Rate (CR) provided by the NBTI model, applies Dynamic Zoning (DZ) algorithm to group cores into zones to process task flows, and then uses Dynamic Task Scheduling (DTS) to allocate tasks in each zone with balanced workload and minimum communication cost. Experimental results on 64-core system show that by allowing a small part of the cores to relax over a short time period (10 seconds), the proposed methodology improves multi-core system yield (percentage of core failures) by 20%, while extending MTTF by 30% with insignificant degradation in performance (less than 3%).

Original languageEnglish (US)
Title of host publication2010 15th Asia and South Pacific Design Automation Conference, ASP-DAC 2010
Pages450-455
Number of pages6
DOIs
StatePublished - Apr 28 2010
Event2010 15th Asia and South Pacific Design Automation Conference, ASP-DAC 2010 - Taipei, Taiwan, Province of China
Duration: Jan 18 2010Jan 21 2010

Publication series

NameProceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC

Other

Other2010 15th Asia and South Pacific Design Automation Conference, ASP-DAC 2010
CountryTaiwan, Province of China
CityTaipei
Period1/18/101/21/10

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering

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  • Cite this

    Sun, J., Lysecky, R., Shankar, K., Kodi, A., Louri, A., & Wang, J. M. (2010). Workload capacity considering NBTI degradation in multi-core systems. In 2010 15th Asia and South Pacific Design Automation Conference, ASP-DAC 2010 (pp. 450-455). [5419839] (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC). https://doi.org/10.1109/ASPDAC.2010.5419839