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Questions and Answers
What is Instruction-level Parallelism (ILP)?
What is Instruction-level Parallelism (ILP)?
- A measure of how many operations a computer program can perform simultaneously (correct)
- A measure of the network bandwidth of a computer program
- A measure of the speed of a computer processor
- A measure of the memory usage of a computer program
Which approach to instruction level parallelism works on dynamic parallelism?
Which approach to instruction level parallelism works on dynamic parallelism?
- Neither hardware nor software levels
- Software level
- Hardware level (correct)
- Both hardware and software levels
Which processor works on the dynamic sequence of parallel execution?
Which processor works on the dynamic sequence of parallel execution?
- Itanium processor
- Pentium processor (correct)
- AMD processor
- ARM processor
If each operation can be completed in one unit of time, how many units of time are required to complete three instructions with no dependencies?
If each operation can be completed in one unit of time, how many units of time are required to complete three instructions with no dependencies?
What is the ILP of a program where three instructions can be completed in a total of two units of time?
What is the ILP of a program where three instructions can be completed in a total of two units of time?
Which processor works on static level parallelism?
Which processor works on static level parallelism?
What is the ILP of a program where four instructions can be completed in a total of three units of time?
What is the ILP of a program where four instructions can be completed in a total of three units of time?
What is the measure of how many of the operations a computer program can be performed simultaneously called?
What is the measure of how many of the operations a computer program can be performed simultaneously called?
Which approach to instruction level parallelism works on static parallelism?
Which approach to instruction level parallelism works on static parallelism?
What is the potential overlap among instructions called?
What is the potential overlap among instructions called?
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Study Notes
Instruction-Level Parallelism (ILP)
- ILP is a measure of how many operations a computer program can be performed simultaneously.
Approaches to ILP
- Dynamic parallelism: works on dynamic parallelism, where the parallelism is determined at runtime.
- Static parallelism: works on static parallelism, where the parallelism is determined at compile time.
Processors
- Dynamic sequence of parallel execution: processor works on a dynamic sequence of parallel execution.
- Static level parallelism: processor works on static level parallelism.
ILP Calculation
- If each operation can be completed in one unit of time, three instructions with no dependencies require 1 unit of time to complete.
- If three instructions can be completed in a total of two units of time, the ILP of the program is 1.5.
- If four instructions can be completed in a total of three units of time, the ILP of the program is 1.33.
Related Concepts
- The potential overlap among instructions is called instruction-level parallelism.
- Static parallelism approach works on static parallelism.
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