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Branching is a critical aspect of pipelined architectures that impacts performance due to the challenges posed by control hazards. Techniques such as branch prediction, delay slots, and out-of-order execution help mitigate these issues. However, inherent limits to pipelining exist due to structural hazards, data hazards, and increased complexity in deeper pipelines.
Chapter 430 sections
Branching is a critical aspect of pipelined architectures that impacts performance due to the challenges posed by control hazards. Techniques such as branch prediction, delay slots, and out-of-order execution help mitigate these issues. However, inherent limits to pipelining exist due to structural hazards, data hazards, and increased complexity in deeper pipelines.
Branch instructions change the flow of control in programs and create performance challenges in pipelining.
Control hazards occur when a pipeline must wait for the outcome of a branch to fetch the next instruction.
Advanced techniques like branch prediction and out-of-order execution help to address the limits of pipelining.
Instructions that alter the control flow in a program, such as if statements and loops.
Delays in the instruction pipeline due to uncertainty in the outcome of a branch instruction.
Techniques used to predict the outcome of a branch instruction to reduce control hazards.
The process of discarding instructions in the pipeline after a branch misprediction, leading to performance penalties.
A slot in the instruction pipeline where an instruction can be executed while waiting for a branch decision.
Total Questions
2
Estimated Time
4 min
Passing Score
70%
2 more questions available