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| Energy Optimization of NoC Based on Voltage-frequency Islands under Processor Reliability Constraints |
| Zhang Jian-xian① Zhou Duan② Yang Yin-tang① Lai Rui① Gao Xiang① |
①(Institute of Microelectronics, Xidian University, Xi’an 710071, China)
②(School of Computer Science and Technology, Xidian University, Xi’an 710071, China) |
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Abstract A method for energy optimization based on the partitioning, assignment, and task mapping of voltage-frequency islands is proposed, considering the issue of energy optimization of Network-on-Chip (NoC) that supports voltage-frequency islands. The energy consumption of the processor is reduced by the partitioning of voltage-frequency islands under processor reliability constraints; the number of complex routers between different voltage-frequency islands is decreased by the voltage-frequency islands assignment strategy of near convex region selection; and the energy consumption of system communications is reduced through NoC mapping optimizations by quantum-behaved particle swarm algorithm. Experimental results show that the presented algorithm can significantly reduce the NoC system energy consumption with the requirements of NoC processor reliability satisfied.
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Received: 19 November 2010
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Corresponding Authors:
Zhang Jian-xian
E-mail: jianxianzhang@mail.xidian.edu.cn
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2011, Vol. 33 
