单芯片多处理器中Cache一致性的分析  

Analysis of Cache Coherence in Chip Multi-Processor

作　　者：汤伟[1] 黄永灿[1] 

机构地区：[1]安阳师范学院,河南安阳455000

出　　处：《安阳师范学院学报》2009年第2期53-56,共4页Journal of Anyang Normal University

摘　　要：单芯片多处理器中,每个处理器都有自己私有的Cache,如何保证多个Cache中数据一致也就成了一个非常重要的问题。本文首先介绍了Cache的工作原理及其读写操作,然后阐述了单芯片多处理器中引起多个Cache中数据不一致的主要原因,最后着重讨论了解决该问题的两种主要方法:监听法和目录法,并对它们进行了分析比较。In the Chip Multi-Processor,each processor has its own private cache,so,cache coherence problem has become very important.This paper first introduces the working principle of the cache and its reading and writing operations.Then it expounds the main reason for the incoherence of data in cache in the Chip Multi-Processor.And finally it discussed the two main methods to solve this problem: snooping method and directory method,which are analyzed and compared.

关 键 词：单芯片多处理器 CACHE一致性 监听 目录 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]