A Study on Improving Power-Consumption Performance Ratio in GPGPU Computing

Increased power consumption of computer has become an important issue in computer systems. Especially in high performance computing, its huge consumption is a serious issue. In this paper, we analyze relationship between performance and power consumption on GPGPU computing, and present a method of improving power-consumption performance ratio. First, we introduce an approach to measuring power consumption of a GPU. Second, we explore performance and power consumption, and discuss a way to improve its performance without substantial power consumption increase. Our experimental results demonstrate that memory access coalescing, utilizing shared memory, and making use of a large quantity of threads improve power-consumption performance ratio.