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11th International Conference on Parallel Architectures and Compilation Techniques (PACT'02)
Predicting Conditional Branches With Fusion-Based Hybrid Predictors
Charlottesville, Virginia
September 22-September 25
ISBN: 0-7695-1620-3
Gabriel H. Loh, Yale University
Dana S. Henry, Yale University
Researchers have studied hybrid branch predictors that leverage the strengths of multiple stand-alone predictors. The common theme among the proposed techniques is a selection mechanism that chooses a prediction from among several component predictors. We make the observation that singling out one particular component predictor ignores the information of the non-selected components. We propose Branch Prediction Fusion, originally inspired by work in the machine learning field, which combines or fuses the information from all of the components to arrive at a final prediction. Our 32KB predictor achieves the same over-all prediction accuracy as the 188KB versions of the previous best performing predictors (the Multi-Hybrid and the global-local perceptron).
Citation:
Gabriel H. Loh, Dana S. Henry, "Predicting Conditional Branches With Fusion-Based Hybrid Predictors," pact, pp.165, 11th International Conference on Parallel Architectures and Compilation Techniques (PACT'02), 2002
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