標題: | An Online Thermal-Constrained Task Scheduler for 3D Multi-Core Processors |
作者: | Liao, Chien-Hui Wen, Charles H. -P. Chakrabarty, Krishnendu 資訊工程學系 電信工程研究所 Department of Computer Science Institute of Communications Engineering |
公開日期: | 2015 |
摘要: | 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. |
URI: | http://hdl.handle.net/11536/134691 |
ISBN: | 978-3-9815-3704-8 |
ISSN: | 1530-1591 |
期刊: | 2015 DESIGN, AUTOMATION & TEST IN EUROPE CONFERENCE & EXHIBITION (DATE) |
起始頁: | 351 |
結束頁: | 356 |
顯示於類別: | 會議論文 |