What are the differences between static and dynamic branch prediction?

What are the differences between static and dynamic branch prediction?

Static branch prediction uses fixed strategies to predict branch outcomes, while dynamic prediction adapts based on runtime behavior.

Can you give examples of static and dynamic branch prediction methods?

Sure! An example of static prediction is always predicting 'taken' or 'not taken'. Dynamic prediction might use a history table.

Which method is generally more accurate?

Dynamic branch prediction is usually more accurate because it learns from past execution patterns.

What impact do these methods have on CPU performance?

Both methods can significantly affect CPU performance, with dynamic prediction often leading to better instruction throughput.

Are there any downsides to dynamic branch prediction?

Yes, dynamic prediction can introduce complexity and overhead, which may negate some performance benefits in certain scenarios.