An online thermal-constrained task scheduler for 3D multi-core processors

Chien Hui Liao, Charles H.P. Wen, Krishnendu Chakrabarty

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Scopus citations

Abstract

Hotspots occur frequently in 3D multi-core processors (3D-MCPs) and they can adversely impact system reliability and lifetime. Moreover, frequent occurrences of hotspots lead to more dynamic voltage and frequency scaling (DVFS), resulting in degraded throughput. Therefore, a new thermal-constrained task scheduler based on thermal-pattern-aware voltage assignment (TPAVA) is proposed in this paper. By analyzing temperature profiles of different voltage assignments, TPAVA pre-emptively assigns different operating-voltage levels to cores for reducing temperature increase in 3D-MCPs. Moreover, the proposed task scheduler integrates a vertical-grouping voltage scaling (VGVS) strategy that considers thermal correlation in 3D-MCPs. Experimental results show that, compared with two previous methods, the proposed task scheduler can respectively lower hotspot occurrences by 47.13% and 53.91%, and improve throughput by 6.50% and 32.06%. As a result, TPAVA and VGVS are effectively for reducing occurrences of hotspots and optimizing throughput for 3D-MCPs under thermal constraints.

Original languageEnglish
Title of host publicationProceedings of the 2015 Design, Automation and Test in Europe Conference and Exhibition, DATE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages351-356
Number of pages6
ISBN (Electronic)9783981537048
DOIs
StatePublished - 22 Apr 2015
Event2015 Design, Automation and Test in Europe Conference and Exhibition, DATE 2015 - Grenoble, France
Duration: 9 Mar 201513 Mar 2015

Publication series

NameProceedings -Design, Automation and Test in Europe, DATE
Volume2015-April
ISSN (Print)1530-1591

Conference

Conference2015 Design, Automation and Test in Europe Conference and Exhibition, DATE 2015
CountryFrance
CityGrenoble
Period9/03/1513/03/15

Fingerprint Dive into the research topics of 'An online thermal-constrained task scheduler for 3D multi-core processors'. Together they form a unique fingerprint.

Cite this