Can you give examples of cache coherence in use?
Sure! Cache coherence is crucial in multi-core processors. For example, in a multi-core system, if one core updates a variable in its cache, other cores must be informed to maintain consistency.
What happens if cache coherence is not maintained?
If cache coherence is not maintained, it can lead to stale data being read by other cores, causing inconsistencies and unpredictable behavior in applications.
Can you explain the MESI protocol?
The MESI protocol is a cache coherence protocol that uses four states: Modified, Exclusive, Shared, and Invalid to manage the state of cache lines and ensure consistency.
Are there any real-world applications of cache coherence?
Yes, cache coherence is vital in databases, cloud computing, and high-performance computing where multiple processors need to access shared data efficiently.
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