MediaBench: a tool for evaluating and synthesizing multimedia and communicatons systems
MICRO 30 Proceedings of the 30th annual ACM/IEEE international symposium on Microarchitecture
Hard Real-Time Computing Systems: Predictable Scheduling Algorithms and Applications
Hard Real-Time Computing Systems: Predictable Scheduling Algorithms and Applications
Profile-based optimal intra-task voltage scheduling for hard real-time applications
Proceedings of the 41st annual Design Automation Conference
MiBench: A free, commercially representative embedded benchmark suite
WWC '01 Proceedings of the Workload Characterization, 2001. WWC-4. 2001 IEEE International Workshop
System-wide energy minimization for real-time tasks: lower bound and approximation
Proceedings of the 2006 IEEE/ACM international conference on Computer-aided design
Energy efficient DVS schedule for fixed-priority real-time systems
ACM Transactions on Embedded Computing Systems (TECS) - Special Section LCTES'05
ISLPED '07 Proceedings of the 2007 international symposium on Low power electronics and design
SACR: Scheduling-Aware Cache Reconfiguration for Real-Time Embedded Systems
VLSID '09 Proceedings of the 2009 22nd International Conference on VLSI Design
Dynamic Reconfiguration of Two-Level Caches in Soft Real-Time Embedded Systems
ISVLSI '09 Proceedings of the 2009 IEEE Computer Society Annual Symposium on VLSI
VLSID '10 Proceedings of the 2010 23rd International Conference on VLSI Design
Power optimization of variable-voltage core-based systems
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Energy-aware task scheduling with task synchronization for embedded real-time systems
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Optimizing Intratask Voltage Scheduling Using Profile and Data-Flow Information
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Temperature- and energy-constrained scheduling in multitasking systems: a model checking approach
Proceedings of the 16th ACM/IEEE international symposium on Low power electronics and design
Proceedings of the 48th Design Automation Conference
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Reachability Analysis of Cost-Reward Timed Automata for Energy Efficiency Scheduling
Proceedings of Programming Models and Applications on Multicores and Manycores
| Hi-index | 0.00 |
System optimization techniques based on dynamic voltage scaling (DVS) are widely used with the aim of reducing processor energy consumption. Inter-task DVS assigns the same voltage level to all the instances of each task. Its intra-task counterpart exploits more energy savings by assigning multiple voltage levels within each task. In this paper, we propose a voltage scaling technique, named PreDVS, which assigns voltage levels based on the task set's preemptive scheduling for hard real-time systems. Our approach is based on an approximation scheme hence can guarantee to generate solutions within a specified quality bound (e.g., within 1% of the optimal) and is different from any existing inter- or intratask DVS techniques. PreDVS exploits static time slack at a finer granularity and achieves more energy saving than inter-task scaling without introducing any extra voltage switching overhead. Moreover, it can be efficiently employed together with existing intra-task scaling techniques. Experimental results demonstrate that PreDVS can significantly reduce energy consumption and outperform the optimal inter-task voltage scaling techniques by up to 24%.