Voltage noise: Why it’s bad, and what to do about it


Vijay Reddi, Meeta Gupta, Krishna Rangan, Simone Campanoni, Glenn Holloway, Michael Smith, Gu Wei, and David Brooks. 1/2009. “Voltage noise: Why it’s bad, and what to do about it.” 5th IEEE Workshop on Silicon Errors in Logic-System Effects (SELSE), Palo Alto, CA.


Power constrained designs are becoming increasingly sensitive to supply voltage noise. We propose hardware-software collaboration to enable aggressive voltage margins: a fail-safe hardware mechanism tolerates margin violations in order to train a run-time software layer that reschedules instructions to avoid recurring violations. Additionally, the software controls an emergency signature-based predictor that throttles to suppress emergencies that code rescheduling cannot eliminate.
Last updated on 04/28/2022