What is the impact of branch prediction on CPU performance?
Branch prediction significantly enhances CPU performance by reducing the number of stalled cycles during instruction execution.
How does branch prediction work in modern CPUs?
Modern CPUs use algorithms to predict the direction of branches, allowing them to pre-fetch instructions and improve execution flow.
What happens when branch prediction fails?
When branch prediction fails, the CPU must discard pre-fetched instructions, leading to delays and reduced performance.
Can you give examples of branch prediction techniques?
Sure! Common techniques include static prediction, dynamic prediction, and tournament predictors, each with varying accuracy.
How does branch prediction affect power consumption?
Branch prediction can reduce power consumption by minimizing idle cycles, but complex predictors may increase power usage due to added circuitry.
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