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2 cards from this section. Quick, good the night before a test.
What is the primary role of the L1 cache?
Think about speed and size.
How does a cache miss affect performance?
Consider the impact of delays.
What is the primary purpose of multi-level caches?
Think about their impact on performance.
True or False: L2 caches are faster than L1 caches.
Consider which cache is designed for speed.
Your CPU has a base CPI of 2 and a single cache miss penalty of 50 cycles along with a miss rate of 1%. Calculate the effective CPI if later an L2 cache is added with a miss rate of 0.5% at a penalty of 10 cycles.
Break down the calculation for both L1 and L2 to see the overall impact.
Explain how a 4-way set associative cache might improve hit rates compared to a direct mapped cache in specific conditions. Utilize relevant examples.
Consider how data access patterns can interact with cache mapping types.
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