Practice Data Hazards: Dependencies Between Instructions - 8.2.2.2 | Module 8: Introduction to Parallel Processing | Computer Architecture
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8.2.2.2 - Data Hazards: Dependencies Between Instructions

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a data hazard?

💡 Hint: Think about how instructions in a sequence relate to each other.

Question 2

Easy

Define RAW hazard.

💡 Hint: Recall the order of operations in instruction execution.

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?

  • A hazard where an instruction writes before it reads
  • A hazard where one instruction reads before another writes
  • A hazard involving multiple writes to the same location

💡 Hint: Think about the order in which instructions are executed.

Question 2

True or False: A WAR hazard occurs when an instruction writes before a previous instruction has read.

  • True
  • False

💡 Hint: Recall the relationship between write and read operations.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given the following sequence of instructions, identify any data hazards:
1. ADD R1, R2, R3
2. SUB R4, R1, R5
3. MUL R1, R6, R7
4. DIV R8, R4, R1
What types of hazards are present?

💡 Hint: Analyze instruction dependencies carefully.

Question 2

Create a small pipeline to manage a sequence of dataloads effectively and avoid hazards:
- LOAD A into R1
- ADD R1, B into R2
- STORE R2 into C. How would you avoid a hazard?

💡 Hint: Consider how values flow through each stage in the pipeline.

Challenge and get performance evaluation