Practice Penalty Of Misprediction (4.4.3) - Branches and Limits to Pipelining

Practice: Penalty of Misprediction

Lesson 4.4.3Branches and Limits to Pipelining

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10 questions

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6 sample questions

Question 1.
What is branch misprediction?
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Think about what can happen if the processor guesses a branch wrongly.
Question 2.
What happens during a pipeline flush?
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Consider what occurs after a misprediction.
3Question 3.
What is branch misprediction?
- It is correctly predicting a branch
- It is when a branch is not predicted at all
- It is incorrectly predicting the outcome of a branch
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Focus on what happens when the CPU makes a wrong guess.
4Question 4.
Flushing the pipeline is required during a misprediction?
- True
- False
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Think about what happens after wrong instructions are fetched.
Question 5.
Consider a complex algorithm that frequently branches. Discuss how branch mispredictions may affect the overall execution time and efficiency.
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Analyze the relationship between frequency of branching and performance.
Question 6.
Propose a new strategy for improving branch prediction and reducing misprediction penalties. Explain the underlying logic.
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Think about data analysis trends in branching behavior.

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