Optimizing the Energy Efficiency of Power Supply in Heterogeneous Multicore Chips with Integrated Switched-Capacitor Coverters
Lu Wang1,a, Leilei Wang1,b, Dejia Shang1,c, Cheng Zhuo2 and Pingqiang Zhou1,d
1ShanghaiTech University, Shanghai, PR China
awanglu2@shanghaitech.edu.cn
bwangll@shanghaitech.edu.cn
cshangdj@shanghaitech.edu.cn
dzhoupq@shanghaitech.edu.cn
2Zhejiang University, Hangzhou, PR China
czhuo@zju.edu.cn
ABSTRACT
Energy efficiency is a major concern in hetrogeneous multi-core chips. Due to the switching-capacitor converter(SCC) has wide output voltages and high potential ratio efficiency, they are widely used in multi-core chips. In this paper we propose the optimization of Metal-Insulator-Metal(MIM) capacitance resource allocation and converter ratio selection for SCCs to improve the power efficiency by transforming the mixed integer nonlinear programming(MINLP) problems into a series of convex problems. The experimental results show that our approach can achieve a 9%-13% improvement in power efficiency and can be applied to more complicated heterogeneous multicore scenarios.
