Title
Potentials of branch predictors: from entropy viewpoints
Abstract
Predictors essentially predicts the most recent events based on the record of past events, history. It is obvious that prediction performance largely relies on regularity-randomness level of the history. This paper concentrates on extracting effective information from branch history, and discusses expected performance of branch predictors. For this purpose, this paper introduces entropy point-of-views for quantitative characterization of both program behavior and prediction mechanism. This paper defines four new entropies from different viewpoints; two of them are independent of prediction methods and the others are dependent on predictor organization. These new entropies are useful tools for analyzing upper-bound of prediction performance. This paper shows some evaluation results of typical predictors.
Year
DOI
Venue
2008
10.1007/978-3-540-78153-0_21
ARCS
Keywords
Field
DocType
entropy point-of-views,branch history,entropy viewpoint,evaluation result,branch predictor,new entropy,prediction method,prediction performance,different viewpoint,prediction mechanism,effective information,upper bound
Data mining,Computer science,Program behavior,Viewpoints,Program counter,Entropy (information theory)
Conference
Volume
ISSN
ISBN
4934
0302-9743
3-540-78152-8
Citations 
PageRank 
References 
3
0.48
9
Authors
3
Name
Order
Citations
PageRank
Takashi Yokota14121.70
Kanemitsu Ootsu24423.90
Takanobu Baba37127.53