Significance Driven Computation on Next-Generation Unreliable Platforms

Georgios Karakonstantis*, Nikolaos Bellas, Christos Antonopoulos, Georgios Tziantzioulis, Vaibhav Gupta, Kaushik Roy

*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

In this paper, we propose a design paradigm for energy efficient and variation-aware operation of next-generation multicore heterogeneous platforms. The main idea behind the proposed approach lies on the observation that not all operations are equally important in shaping the output quality of various applications and of the overall system. Based on such an observation, we suggest that all levels of the software design stack, including the programming model, compiler, operating system (OS) and run-time system should identify the critical tasks and ensure correct operation of such tasks by assigning them to dynamically adjusted reliable cores/units. Specifically, based on error rates and operating conditions identified by a sense-and-adapt (SeA) unit, the OS selects and sets the right mode of operation of the overall system. The run-time system identifies the critical/less-critical tasks based on special directives and schedules them to the appropriate units that are dynamically adjusted for highly-accurate/approximate operation by tuning their voltage/frequency. Units that execute less significant operations can operate at voltages less than what is required for correct operation and consume less power, if required, since such tasks do not need to be always exact as opposed to the critical ones. Such scheme can lead to energy efficient and reliable operation, while reducing the design cost and overheads of conventional circuit/micro-architecture level techniques.

Original languageEnglish
Title of host publicationPROCEEDINGS OF THE 48TH ACM/EDAC/IEEE DESIGN AUTOMATION CONFERENCE (DAC)
Place of PublicationNEW YORK
PublisherASSOC COMPUTING MACHINERY
Pages290-291
Number of pages2
Publication statusPublished - 2011
Event48th ACM/IEEE/EDAC Design Automation Conference (DAC) - San Diego, Canada
Duration: 05 Jun 201109 Jun 2011

Publication series

NameDesign Automation Conference DAC
PublisherASSOC COMPUTING MACHINERY
ISSN (Print)0738-100X

Conference

Conference48th ACM/IEEE/EDAC Design Automation Conference (DAC)
CountryCanada
Period05/06/201109/06/2011

Keywords

  • Energy Efficient
  • Software
  • Approximate Computing

Cite this

Karakonstantis, G., Bellas, N., Antonopoulos, C., Tziantzioulis, G., Gupta, V., & Roy, K. (2011). Significance Driven Computation on Next-Generation Unreliable Platforms. In PROCEEDINGS OF THE 48TH ACM/EDAC/IEEE DESIGN AUTOMATION CONFERENCE (DAC) (pp. 290-291). (Design Automation Conference DAC). ASSOC COMPUTING MACHINERY.