What is the impact of cache coherence in multi-core processors?
Cache coherence ensures that multiple processors have a consistent view of shared data, preventing stale data issues.
Why is cache coherence important for performance?
It's crucial because it reduces the overhead of data synchronization, leading to faster access times and improved overall performance.
What are the common protocols used for cache coherence?
Common protocols include MESI, MOESI, and MSI, each with different strategies for maintaining coherence.
How does cache coherence affect system scalability?
Effective cache coherence mechanisms can enhance scalability by minimizing the performance penalties as more processors are added.
Can you give an example of a cache coherence problem?
Sure! A classic example is the 'false sharing' problem, where processors inadvertently invalidate each other's cache lines.
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