Title :
Energy-aware fault tolerance in fixed-priority real-time embedded systems
Author :
Ying Zhang ; Chakrabarty, K. ; Swaminathan, Vishnu
Author_Institution :
Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA
Abstract :
We investigate an integrated approach to fault tolerance and dynamic power management in real-time embedded systems. Fault tolerance is achieved via checkpointing and power management is carried out using dynamic voltage scaling (DVS). We present feasibility-of-scheduling tests for checkpointing schemes for a constant processor speed as well as for variable processor speeds. DVS is then carried out on the basis of these feasibility analyses. Experimental results show that compared to fault-oblivious methods, the proposed approach significantly reduces power consumption and guarantees timely task completion in the presence of faults.
Keywords :
embedded systems; energy management systems; fault tolerant computing; power consumption; DVS; checkpointing schemes; constant processor speed; dynamic power management; dynamic voltage scaling; energy aware fault tolerance; feasibility analyses; feasibility of scheduling tests; fixed priority real time embedded systems; power consumption reduction; variable processor speeds; Checkpointing; Dynamic voltage scaling; Embedded system; Energy management; Fault tolerance; Fault tolerant systems; Power system management; Real time systems; Testing; Voltage control;
Conference_Titel :
Computer Aided Design, 2003. ICCAD-2003. International Conference on
Conference_Location :
San Jose, CA, USA
Print_ISBN :
1-58113-762-1
DOI :
10.1109/ICCAD.2003.159691