CAJ | 학술논문

图形处理技术被广泛应用于电影、视频、游戏以及动画的制作，而图形处理系统( GPU)的出现极大地减轻了CPU日益繁重的图形处理任务，使得其能更专注于通用控制。文中阐述了制约GPU性能提升的重要因素，指出提高带宽利用率是应对这一问题的关键措施。通过局部性原理的分析，提出了一种基于层次化架构的高效GPU存储系统的设计。文中介绍了4层结构的存储系统，并逐层说明了各自的功能和架构，评估了基于层次化存储架构的GPU在典型应用中的带宽。文中还描述了Cache以及显存管理等子模块的功能。通过仿真可知，该GPU存储系统能充分利用共享和复用等手段尽量减少外部存储器的访问次数，从而提高了带宽利用率。
도형처리기술피엄범응용우전영、시빈、유희이급동화적제작，이도형처리계통( GPU)적출현겁대지감경료CPU일익번중적도형처리임무，사득기능경전주우통용공제。문중천술료제약GPU성능제승적중요인소，지출제고대관이용솔시응대저일문제적관건조시。통과국부성원리적분석，제출료일충기우층차화가구적고효GPU존저계통적설계。문중개소료4층결구적존저계통，병축층설명료각자적공능화가구，평고료기우층차화존저가구적GPU재전형응용중적대관。문중환묘술료Cache이급현존관리등자모괴적공능。통과방진가지，해GPU존저계통능충분이용공향화복용등수단진량감소외부존저기적방문차수，종이제고료대관이용솔。
Graphic processing technique has been widely used in movie,video,game and cartoon making. GPU has greatly reduced the pressure of graphic processing,which was CPU’ s job in the past. It introduces the key factor which limits improvement of GPU perform-ance,and also indicates that the bandwidth utilization is one of the critical resources to deal with that limits. According to analysis of prin-ciple of locality,attempt to explore an efficient GPU memory system based on layered architecture. This global memory hierarchy struc-ture has four layers of memory,and the function of each layer has been described. In this paper,present the bandwidth utilization ratio of typical GPU running scenarios,also introduce the architecture of the modules such as Cache and MMU. This GPU memory system can re-duce the frequency of accessing SDRAM by sharing cache on chip,so that the utilization ratio of bandwidth has been greatly improved.