Practice Data Hazards: Dependencies Between Instructions (8.2.2.2) - Introduction to Parallel Processing
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Data Hazards: Dependencies Between Instructions

Practice - Data Hazards: Dependencies Between Instructions

Learning

Practice Questions

Test your understanding with targeted questions

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.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

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.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

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.

Challenge 2 Hard

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.

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Reference links

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