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Questions and Answers
Pipelining is the process of arrangement of hardware elements of the ______ such that its overall performance is increased.
Pipelining is the process of arrangement of hardware elements of the ______ such that its overall performance is increased.
CPU
In pipelining, multiple instructions are overlapped in execution.
In pipelining, multiple instructions are overlapped in execution.
True
Non-pipelined processors allow for simultaneous execution of multiple instructions.
Non-pipelined processors allow for simultaneous execution of multiple instructions.
False
What is the primary challenge with pipelining in terms of performance?
What is the primary challenge with pipelining in terms of performance?
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What does CPI stand for in the context of pipelining?
What does CPI stand for in the context of pipelining?
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The ideal CPI in pipelining is 1, meaning one instruction is completed per clock cycle.
The ideal CPI in pipelining is 1, meaning one instruction is completed per clock cycle.
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What is the general formula to calculate the number of instructions 'n' in a pipelined process, given 'k' stages and 'm' instructions?
What is the general formula to calculate the number of instructions 'n' in a pipelined process, given 'k' stages and 'm' instructions?
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What is the general formula to calculate the speedup in a pipelined process?
What is the general formula to calculate the speedup in a pipelined process?
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What is the general formula to calculate the efficiency or utilization in a pipelined process?
What is the general formula to calculate the efficiency or utilization in a pipelined process?
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What are the three types of hazards that can occur in pipelining?
What are the three types of hazards that can occur in pipelining?
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What is the core problem associated with hazards in pipelining?
What is the core problem associated with hazards in pipelining?
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Data hazards occur when two or more instructions attempt to access the same resource at the same time.
Data hazards occur when two or more instructions attempt to access the same resource at the same time.
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What is the core issue behind data hazards, specifically RAW (Read After Write) hazards?
What is the core issue behind data hazards, specifically RAW (Read After Write) hazards?
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Structural hazards occur due to limited resources, including the CPU, memory, and registers, being accessed by multiple instructions simultaneously.
Structural hazards occur due to limited resources, including the CPU, memory, and registers, being accessed by multiple instructions simultaneously.
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Control hazards are typically caused by conditional branch instructions, leading to uncertainties about the next instruction to be executed.
Control hazards are typically caused by conditional branch instructions, leading to uncertainties about the next instruction to be executed.
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What common technique is used to address control hazards in pipelining?
What common technique is used to address control hazards in pipelining?
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A stall in pipelining is a way of handling hazards by delaying the execution of one or more subsequent instructions until the hazard condition resolves.
A stall in pipelining is a way of handling hazards by delaying the execution of one or more subsequent instructions until the hazard condition resolves.
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How does resource duplication help to address structural hazards in pipelining?
How does resource duplication help to address structural hazards in pipelining?
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Although resource duplication solves structural hazards efficiently, it also increases the complexity of the overall system design.
Although resource duplication solves structural hazards efficiently, it also increases the complexity of the overall system design.
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What is the key concept behind the simple solution to hazards in pipelining?
What is the key concept behind the simple solution to hazards in pipelining?
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The goal of pipelining is to achieve a speedup in instruction execution, which can often be measured as the ratio of the number of instructions completed in the non-pipelined system versus the number of instructions completed in the pipelined system.
The goal of pipelining is to achieve a speedup in instruction execution, which can often be measured as the ratio of the number of instructions completed in the non-pipelined system versus the number of instructions completed in the pipelined system.
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Study Notes
Pipelining Definition
- Pipelining is arranging CPU hardware elements to improve overall performance.
Pipelining Execution
- Pipelining allows simultaneous execution of multiple instructions.
- Non-pipelined processors execute instructions sequentially.
- Pipelining overlaps instruction execution for better performance.
Pipelining Stages
- Pipelining involves dividing instructions into stages (e.g., IF, ID, EX, MEM, WB).
- Instructions move through stages in an overlapping manner.
- Stages are performed sequentially for each instruction.
Pipelining Hazards
- Hazards, are problems that can slow down or stop pipeline execution.
- Data Hazards: occur when an instruction depends on the result of a prior instruction (e.g., Read After Write).
- Structural Hazards: arise when multiple instructions require the same hardware resources concurrently.
- Control Hazards: happen due to conditional branches or jumps in the program.
Hazard Solutions
- Resource duplication: providing multiple copies of shared hardware units can solve structural hazards.
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Description
Explore the fundamentals of pipelining in computer architecture through this quiz. Understand the stages of pipelining, the types of hazards, and their solutions. Test your knowledge of simultaneous instruction execution and the impact of hazards on performance.
