Cache Coherence: Concepts and Protocols

This lecture covers the fundamental concepts of cache coherence in multiprocessor systems, including Flynn's Taxonomy, shared-memory multiprocessors, programming paradigms, and the cache coherence problem. It delves into snoopy cache-coherence protocols, coherent memory systems, and various cache coherence protocols like MSI and MESI. The lecture also discusses directory-based cache coherence, multilevel caches, and the inclusion property between cache levels. Additionally, it explores the challenges of maintaining inclusion between caches and the distinction between coherence and consistency in multiprocessor systems.