Five poTAGEs and a COLT for an unrealistic predictor

Pierre Michaud (1)

1 ALF - Amdahl's Law is Forever

This paper describes the conditional branch predictor that the author submitted to the unlimited-size track of the 4th Championship Branch Prediction. The proposed predictor consists of 5 TAGE predictors which we have tuned for better accuracy under huge storage budget. The overall prediction is obtained by combining the 5 TAGE predictions via COLT fusion. One of the 5 TAGE components takes a conventional global path as input. The 4 other TAGE components take as input different sorts of first level histories.

Mots clés: conditional branch predictor

Domaines: Architectures Matérielles [cs.AR]

Pierre Michaud. Five poTAGEs and a COLT for an unrealistic predictor. 4th JILP Workshop on Computer Architecture Competitions (JWAC-4): Championship Branch Prediction (CBP-4), Jun 2014, Minneapolis, United States. ⟨hal-01087692⟩