Practice Cpi – Cycles Per Instruction (8.2.2) - Performance Metrics for Cortex-A Architectures
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CPI – Cycles Per Instruction

Practice - CPI – Cycles Per Instruction

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does CPI stand for?

💡 Hint: Look at the initial letters.

Question 2 Easy

Is a lower CPI better for processor performance?

💡 Hint: Think about efficiency.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does CPI stand for?

Cycles Per Instruction
Cycles Per Instance
Cycles Per Interaction

💡 Hint: It's about the cycles needed per task.

Question 2

True or False: Lower CPI values indicate worse processor performance.

True
False

💡 Hint: Think about what low CPI means for efficiency.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Analyze a Cortex-A processor that executes 50,000 instructions with a CPI of 1.5 and a clock cycle time of 3 ns. Calculate the execution time and discuss whether increasing processors to lower CPI would impact performance.

💡 Hint: Apply the execution time formula and think about how CPI affects workload management.

Challenge 2 Hard

Given two different processors with different architectures, one with a CPI of 1.2 and the other with a CPI of 2.5, analyze their efficiency. What factors could lead to such differing CPI values?

💡 Hint: Consider aspects like instruction sets and microarchitecture.

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Reference links

Supplementary resources to enhance your learning experience.