一种面向CMP的可变相联度混合Cache结构

A CMP Oriented Variable-Way Hybrid Cache

以V-Way Cache结构为原型,提出一种面向CMP的可变相联度混合Cache结构CMP-VH.CMP-VH将最后一级片上Cache划分成一种优化的私有/共享结构,Tag私有,数据部分私有部分共享.采用基于数据块的重用信息替换策略,提供显式和隐式两种机制在核间对共享数据进行容量划分.并行程序负载SPLASH-2的模拟实验结果表明,CMP-VH具有比单一的私有/共享结构更好的整体性能.

We propose a CMP oriented variable-way hybrid cache mechanism,named CMP-VH,based on V-Way Cache.CMP-VH turns the last level cache into an optimized private/shared organization.The tag array is private,while the data array is private and shared organized.In CMP-VH,we use reuse information for cache line replacement,and provide implicit and explicit partitioning mechanisms for shared data region.The simulation result of parallel workload SPLASH-2 shows that CMP-VH excelled the pure private or shared cache.