Practice Two-level Adaptive Prediction (4.3.2.2) - Branches and Limits to Pipelining

Practice: Two-Level Adaptive Prediction

Lesson 4.3.2.2Branches and Limits to Pipelining

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9 questions

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6 sample questions

Question 1.
What is the main purpose of Two-Level Adaptive Prediction?
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Think about how this technique relates to reducing delays.
Question 2.
What does global history track?
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It's a broad view of history.
3Question 3.
What is Two-Level Adaptive Prediction primarily used for?
- Improving memory access
- Enhancing branch prediction accuracy
- Reducing power consumption
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Think about the focus on branch predictions.
4Question 4.
True or False: Local history refers to tracking outcomes of all branches.
- True
- False
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Remember the difference between local and global history.
Question 5.
Given a branch instruction history where 8 out of 10 times it was taken, describe how Two-Level Adaptive Prediction would respond to future predictions.
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Think about how frequent behavior informs future decisions.
Question 6.
Explain a scenario where local history might lead to a significant performance boost compared to only using global history.
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Consider examples of branches that do not follow general patterns.

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