Design Scheme of Directory-based Cooperative Cache in CMP
Yixuan Tang · Jisuanji gongcheng · 2010
One of the key factors that affects the performance of Chip MultiProcessors(CMP) is the design and management of L2 cache.This paper proposes the design method of cooperative caching using central coherence directory hardware based on private L2 cache,which can manage on-chip storage resources more efficiently to improve the performance of CMP.This cooperative caching combines the lower average memory access latency of private cache and the lower miss rate of shared cache,it also has strong scalability.Experimental result shows that on the average,the cooperative caching increases the IPC by 13.5%,compared with shared L2 cache,and the hardware overhead is about 8.1%.