Abstract:

Modern 3D Graphics Processing Unit (GPU) has evolved from a fixed-function rendering pipeline to a programmable rendering pipeline with much more parallelism.Research and design of highperformance 3D GPU is important for 3D graphics processing.Shader is crucial to implement 3D GPU,so developing a shader with high performance,small area,low power and ease of extension is of great significance.Based on Single Instruction Multiple Threads (SIMT) and Single Instruction Multiple Data (SIMD),an extendable unified architecture GPU is proposed. SIMT can achieve more parallelism,resulting in higher performance.SIMD simplifies the design complexity,achieving a shader with less area,lower power and ease of extension.Experimental results show that the proposed extendable unified architecture GPU provides higher performance,smaller area,lower power,and better extension.   

Key words: GPU;unified architecture;shader;single instruction multiple threads (SIMT);single instruction multiple data (SIMD)