What is the role of cache in multi-core systems?

Can you explain the role of cache in multi-core systems?

Sure! Cache in multi-core systems helps reduce latency and improve performance by storing frequently accessed data closer to the CPU.

How does cache coherence work in these systems?

Cache coherence ensures that multiple cores have a consistent view of data. When one core updates a value, other cores are notified to update their caches.

What are the different levels of cache?

There are typically three levels: L1 (fastest, smallest), L2 (larger, slower), and L3 (largest, shared among cores).

Can cache size affect performance?

Yes, a larger cache can store more data, reducing the need to access slower main memory, which enhances performance.

What happens if the cache is full?

If the cache is full, the system must evict some data to make room for new data, which can lead to cache misses and slower performance.