3. Pipelining
Pipelining is a technique that enhances processor performance by overlapping instruction execution across multiple stages, leading to increased throughput. Various types of pipelining, including instruction and data pipelining, help manage the flow of instructions within the CPU. Challenges such as pipeline hazards and stalls are addressed through techniques like forwarding and branch prediction. Advanced pipelining methods continue to evolve, allowing for improvements in efficiency and performance metrics like throughput, latency, and speedup.
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What we have learnt
- Pipelining is a method used to improve instruction throughput in processors.
- Different types of pipelining can be implemented, such as instruction pipelining and arithmetic pipelining.
- Pipeline hazards and their mitigation techniques are crucial for maintaining performance during instruction execution.
Key Concepts
- -- Pipelining
- The process of dividing the execution of instructions into multiple stages that can be performed in parallel to increase performance.
- -- Pipeline Hazard
- Challenges in the pipeline system that can affect the execution of instructions, including data, control, and structural hazards.
- -- Throughput
- The number of instructions that can be processed per unit of time, which is improved via the overlap of instruction execution in pipelining.
- -- Latency
- The time it takes for a single instruction to pass through the entire pipeline; pipelining aims to reduce overall throughput latency.
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