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Confidence estimation for branch prediction reversal

Author
Aragon, J.; González, J.; García, J.; Gonzalez, A.
Type of activity
Journal article
Journal
Lecture notes in computer science
Date of publication
2001
Volume
2228
First page
214
Last page
223
DOI
https://doi.org/10.1007/3-540-45307-5_19 Open in new window
URL
https://link.springer.com/chapter/10.1007%2F3-540-45307-5_19 Open in new window
Abstract
Branch prediction reversal has been proved to be an effective alternative approach to dropping misprediction rates by means of adding a Confidence Estimator to a correlating branch predictor. This paper presents a Branch Prediction Reversal Unit (BPRU) especially oriented to enhance correlating branch predictors, such as the gshare and the Alpha 21264 metapredictor. The novelty of this proposal lies on the inclusion of data values in the confidence estimation process. Confidence metrics show tha...
Keywords
Parallel architectures, Program compilers
Group of research
ARCO - Microarchitecture and Compilers

Participants