What are single-processor systems and how do they handle cache coherence?

What are single-processor systems and how do they handle cache coherence?

Single-processor systems are computer architectures with a single CPU. Cache coherence ensures that multiple caches reflect the same data.

Why is cache coherence important in single-processor systems?

Cache coherence is crucial because it prevents data inconsistency, ensuring that the CPU always accesses the most recent data.

Can you explain how cache coherence protocols work?

Cache coherence protocols, like MESI, manage how caches communicate to maintain consistency, using states like Modified, Exclusive, Shared, and Invalid.

What are the challenges in maintaining cache coherence?

Challenges include increased complexity, potential performance bottlenecks, and the overhead of maintaining consistency across caches.