关键词: 环, 片上多核处理器, cache一致性协议, 模拟器

Abstract: Network On Chip（NOC）and cache coherence protocol are the key design points of Chip Multi-Processor（CMP）. To explore the cache coherence protocol design space of ring connected CMP, a CMP simulator needs to simulate the ring and cache coherence protocol precisely. Godson-Ring is a user mode ring connected CMP simulator. It simulates the functional and timing behaviors of CMP separately, and combines the event driven and execution driven methods together. The simulator accurately simulates the cache coherence protocol and ring cycle by cycle. It’s fast and flexible, and can explore the design space of cache coherence protocol efficiently.

Key words: ring, Chip Multi-Processor（CMP）, cache coherence protocol, simulator