Paper Info
Title
Energy-aware task replication to manage reliability for periodic real-time applications on multicore platforms
Abstract
Energy and reliability management are important design constraints for real-time embedded systems. We consider the problem of achieving a given reliability target for a set of periodic real-time applications running on a multi-core system with minimum energy consumption. Specifically, we observe that the emerging multicore platforms provide ample opportunities to use task replication to achieve reliability targets and mitigate the negative impact of Dynamic Voltage Scaling (DVS) on the rate of transient faults leading to soft errors. However, while it allows using lower execution frequencies, replication may also increase overall energy consumption due to additional task copies. Our objective is to determine the level of replication and frequency assignment for each task, as well as task-to-core allocations, in such a way to achieve the target reliability levels with minimum energy consumption. We first identify the subtle interplay between the processing frequency, replication level, reliability, and energy consumption on DVS-enabled multicore systems. Then we show that the problem is intractable in the general case and propose our energy-efficient replication (EER) algorithm as an approximate solution. We also show how the framework can be extended to tolerate a given number of permanent faults affecting processing cores. We evaluate the performance of our proposed scheme through extensive simulations. The simulation results indicate that through our algorithm, a very broad spectrum of reliability targets can be achieved with minimum energy consumption through the judicious use of replica and frequency assignment.
Year
DOI
Venue
2013
10.1109/IGCC.2013.6604518
Green Computing Conference
Keywords
Field
DocType
embedded systems,energy conservation,energy consumption,fault tolerant computing,multiprocessing systems,power aware computing,reliability,time-varying systems,DVS mitigation,DVS-enabled multicore systems,EER algorithm,dynamic voltage scaling,embedded systems,energy consumption,energy-aware task replication,energy-efficient replication,execution frequencies,frequency assignment,multicore platforms,periodic real-time applications,processing frequency,reliability,replication level,soft errors,task-to-core allocations,transient faults
Dynamic voltage scaling,Replica,Energy conservation,Real-time computing,Time–frequency analysis,Frequency assignment,Engineering,Energy consumption,Multi-core processor,Periodic graph (geometry)
Conference
Citations 
PageRank 
References 
13
0.58
17
Authors
3
Name
Order
Citations
PageRank
Mohammad A. Haque19910.07
Hakan Aydin2121861.97
Da-Kai Zhu3140566.97