Microarchitecture and Performance Analysis of Godson-2 SMT Processor

—This paper introduces the microarchitecture and logical implementation of SMT (Simultaneous Multithreading) improvement of Godson-2 processor which is a 64-bit, four-issue, out-of-order execution high performance processor. The condition for implementing correct memory consistency model in Godson-2 SMT processor is studied and a new register-level sharing and synchronization scheme is proposed. Godson-2 SMT processor has been implemented at the RTL level and simulated with the VstationPro of Mentor Graphics. The Linux operating system is ported to run in Godson-2 SMT processor and application programs such as SPEC CPU2000 benchmark suite are used to evaluate performance. Experimental results indicate that the performance of Godson-2 SMT processor is improved significantly by fully exploiting thread-level parallelism and optimized utilization of functional units. The average speedup is

• Type: Conference
• Year: 2006
• Where: ICCD
• Authors: Zusong Li, Xianchao Xu, Weiwu Hu, Zhimin Tang
• Keywords: Correct Memory Consistency, Godson-2 Processor, Godson-2 SMT Processor, Hardware, ICCD 2006