Cache Coherence issues and Solution: A Review

Computer systems are extensively being used in today’s era and the advancement in computer systems has led to the evolution of various technologies. As the efficiency of the computer systems is to be enhanced, the usage of cache memory becomes a must. The cache memory problems occur when multiprocessor systems are used. When multiple processors are processors share a common memory pool, the problem of cache coherence occurs. Cache coherence is a state in which the cache memories of the processors must stay in coherence with each other. The data should be updated in all the cache systems. Various protocols are used to ensure cache coherence. This study delineates the cache memory architecture, cache coherence, and the issues that arise due to non-consistent data in the cache of multiprocessor systems. Moreover, this study also delineates the protocols of the cache coherence and also describes in detail the MISE protocol. This study will provide an in-depth review of cache, cache coherence, and the issues associated with cache coherence along with the solution.