Practice RAW (Read After Write) Hazard - True Dependency - 8.1.1.2.1 | Module 8: Introduction to Parallel Processing | Computer Architecture
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8.1.1.2.1 - RAW (Read After Write) Hazard - True Dependency

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does the acronym RAW stand for in the context of hazards?

💡 Hint: Think about the order of reading and writing instructions.

Question 2

Easy

What is a simple example of a RAW hazard in assembly code?

💡 Hint: Recall instruction sequences where one instruction relies on the result of another.

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 a RAW hazard?

  • An error caused by writing before reading.
  • A dependency issue where one instruction reads before another writes.
  • A method of reducing delays in pipelining.

💡 Hint: Focus on the order of instructions in pipelining.

Question 2

True or False: Forwarding can fix any RAW hazard.

  • True
  • False

💡 Hint: Consider scenarios when forwarding might not be sufficient.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Design and explain a sequence of five assembly instructions that demonstrate at least two distinct RAW hazards. Discuss potential solutions.

💡 Hint: Build the relationships between your instructions carefully for optimal understanding.

Question 2

Evaluate how stalling impacts overall pipeline efficiency in a processor system with heavy RAW hazards. Provide a calculation for speedup loss.

💡 Hint: Remember the relationship between stalls, cycle count, and speedup calculations.

Challenge and get performance evaluation