What is the difference between a static and dynamic predictor?
Static risk factors are features of the offenders’ histories that predict recidivism but are not amenable to intervention, such as prior offenses. By contrast, dynamic risk factors are potentially changeable factors, such as Substance Abuse and Criminal Network.
What is the use of branch history table BHT )?
A Branch History Table (BHT) stores past action and target for branches, and predicts that future behavior will repeat. Although past action is a good indicator of future action, the subroutine CALL/RETURN paradigm makes correct prediction of the branch target difficult.
What is branch prediction logic?
Branch prediction logic: In this scheme, a prediction is made for the branch instruction currently in the pipeline. The prediction will either be taken or not taken. If the prediction is true then the pipeline will not be flushed and no clock cycles will be lost.
Is dynamic branch prediction always better than static?
In Dynamic branch prediction technique prediction by underlying hardware is not fixed, rather it changes dynamically. This technique has high accuracy than static technique.
What is an advantage of dynamic branch prediction methods such as history tables over static branch prediction?
What is an advantage of dynamic branch prediction methods, such as history tables, over static branch prediction? Increased hardware complexity. Low branch prediction accuracy (no better than chance). Given the following code, what hazards occur?
What are the two stages of the dynamic branch prediction?
Some dynamic branch prediction techniques are: 1-bit branch prediction technique. 2-bit branch prediction technique. Correlating branch prediction technique.
What is dynamic execution?
First used in the P6 or sixth-generation processors, dynamic execution is an innovative combination of three processing techniques designed to help the processor manipulate data more efficiently. Those techniques are multiple branch prediction, data flow analysis, and speculative execution.
What are the two stage of the dynamic branch prediction?
What is an advantage of static branch prediction?
What is an advantage of static branch prediction? Increases hardware complexity. Increased performance. Low branch prediction accuracy (no better than chance).
How does dynamic branch prediction work?
In the case of dynamic branch prediction, the hardware measures the actual branch behavior by recording the recent history of each branch, assumes that the future behavior will continue the same way and make predictions. If the prediction goes wrong, the pipeline will stall while re-fetching, and the hardware also updates the history accordingly.
What is the use of branch predication?
Branch predication speeds up the processing of branch instructions with CPUs using pipelining. The technique involves only executing certain instructions if certain predicates are true. Branch prediction is typically implemented in hardware using a branch predictor. Branch prediction is also known as branch predication or simply as predication.
What is base branch prediction in computer architecture?
Branch prediction is an approach to computer architecture that attempts to mitigate the costs of branching. Branch predication speeds up the processing of branch instructions with CPUs using pipelining.
What is the difference between static prediction and dynamic prediction?
The comparison between the static prediction discussed in the earlier module and dynamic prediction is given below: In the case of dynamic branch prediction, the hardware can look for clues based on the instructions, or it can use past history.