Practice Effective CPI with L2 Cache - 7.1.3 | 7. Multi-level Caches | Computer Organisation and Architecture - Vol 3
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7.1.3 - Effective CPI with L2 Cache

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define what L1 cache is.

💡 Hint: Think about the cache that is closest to the CPU.

Question 2

Easy

What does miss rate refer to?

💡 Hint: Consider how often a requested data piece is not found in cache.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary function of L2 cache?

  • It's smaller than L1
  • Serves as a backup for L1
  • It's faster than L1

💡 Hint: Think about the relationship between the two cache types.

Question 2

A higher miss rate generally leads to what consequence?

  • True
  • False

💡 Hint: Recall how miss rates correlate to memory access.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A system has an L1 cache with a 2% miss rate and a penalty of 50 cycles, along with an L2 cache miss rate of 1% with a penalty of 10 cycles. Calculate the effective CPI given that the base CPI is 1.

💡 Hint: Apply the miss rates and penalties for both caches while starting with base CPI.

Question 2

Given a CPU base CPI of 1.3 with a main memory access time of 150 nanoseconds and a clock cycle of 0.5 nanoseconds, calculate the miss penalty if the CPU accesses the main memory three times due to cache misses.

💡 Hint: Find individual penalties before summing to get the overall effective CPI.

Challenge and get performance evaluation