Low Power Design of a Multi-Core Processor Chip

Abstract

Abstract: In order to implement low power design of Cool Symmetry Processor (CSP) which is a high frequency multi-core processor chip, three techniques are proposed for power reduction based on CSP structure, that is interval power gating, dynamic frequency scaling based on throughput and hierarchical clock gating. The results of experiment show the three low power techniques reduce CSP chip power effectively. The interval power gating solves leakage power, the dynamic frequency scaling based on throughput and hierarchical clock gating can control dynamic power.

Key words: chip, power, power gating, dynamic frequency scaling (DFS), clock gating

CLC Number:

TP 302.1

GAO Jun, WANG Yong-Wen, GUO Wei, HUANG An-Wen. Low Power Design of a Multi-Core Processor Chip[J]. Journal of Shanghai Jiaotong University, 2013, 47(01): 118-122.

References

［1］Chen H, Wang S, Shi W. Where does the power go in a computer system: Experimental analysis and implications［C］∥Green Computing Conference and Workshops (IGCC). Orlando: IEEE, 2011:16.
［2］Wu K, Lee M, Marculescu D, et al. Mitigating lifetime underestimation: A systemlevel approach considering temperature variations and correlations between failure mechanisms ［C］∥Design, Automation and Test in Europe Conference and Exhibition (DATE). Dresden: IEEE, 2012:12691274.
［3］王永文. 高性能微处理器体系结构级功耗估算与优化技术研究［D］. 长沙:国防科学技术大学计算机学院, 2004.
［4］Segars S. Low power design techniques for microprocessors ［C］∥Proceedings of the IEEE International SolidState Circuits Conference (ISSCC’01). California: IEEE, 2001: 410.
［5］Calimera A, Macii E, Poncino M, et al. NBTIaware power gating for concurrent leakage and aging optimization ［C］∥Proceedings of the 14th ACM/IEEE international symposium on Low power electronics and design. Henkel: ACM, 2009:127132.
［6］Choi K, Soma R, Pedram M. Dynamic voltage and frequency scaling based on workload decomposition ［C］∥Proceedings of the 2004 International Symposium on Low Power Electronics and Design. California: ACM, 2004: 174179.
［7］Imamura S, Sasaki H, Fukumoto N, et al. Optimizing powerperformance tradeoff for parallel applications through dynamic core and frequency scaling ［C］∥Proceedings of the RESoLVE. London: ACM, 2012:18.
［8］Wang B, Wang Q, Peng R, et al. Design of a low power DSP with distributed and early clock gating ［J］. Journal of Shanghai Jiaotong University(Science), 2007, 12(5): 610617.

［9］Mahmoodi H, Tirumalashetty V, Cooke M, et al. Ultra lowpower clocking scheme using energy recovery and clock gating ［J］. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2009, 17(1): 3344.
［10］Huda S, Mallick M, Anderson J. Clock gating architectures for FPGA power reduction ［C］∥International Conference on Field Programmable Logic and Applications 2009. Prague: IEEE, 2009:112118.
［11］Bircher W, John L. Complete system power estimation using processor performance events ［J］. IEEE Transactions on Computers, 2012, 61 (4): 563577.
［12］卢君明, 林争辉. CMOS电路平均功耗最小平方估计技术［J］. 上海交通大学学报, 2002, 36 (3): 315318.
LU Junming, LIN Zhenghui. Average power estimation in CMOS circuit with least square method ［J］. Journal of Shanghai Jiaotong University, 2002, 36 (3): 315318.

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