Journals Proceedings

Abstract

Appropriate solution to illustrious Cache Coherence Problem in shared memory multiprocessors system is one of the crucial issue for improving system performance and scalability. In this paper we have surveyed various cache coherence mechanisms in shared memory multiprocessor. Various hardware based and software based protocol have been investigated in depth including recent protocols. We have concluded that hardware based cache coherence protocol are better than software based protocol according to presently available protocols, but hardware based protocol have added the cost to implement them. In comparison analysis of protocols on SMP Cache simulator by varying certain parameters we noticed that the Dragon Protocol is giving the best results in terms of number of hits at great extent. As software based cache coherence protocol are more economical therefore more devotion is needed for software based protocol as they show great promise for future work.