On-line global energy optimization in multi-core systems using principles of analog computation


Deniz Z. T. , Leblebici Y., Vittoz E. A.

IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol.42, no.7, pp.1593-1606, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 7
  • Publication Date: 2007
  • Doi Number: 10.1109/jssc.2007.896694
  • Title of Journal : IEEE JOURNAL OF SOLID-STATE CIRCUITS
  • Page Numbers: pp.1593-1606

Abstract

This work presents the design and the silicon implementation of an on-line energy optimizer unit based on novel analog computation approaches, which is capable of dynamically adjusting power supply voltages and operating frequencies of multiple processing elements on-chip. The optimized voltage/frequency assignments are tailored to the instantaneous workload information on multiple tasks and fullyadaptive to variations in process and temperature. The optimizer unit has a response time of less than 50 mu s, occupies a silicon area of 0.021 mm'/task and dissipates 2 mW/task.