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- Title
A stride value predictor suppressing conflicts focusing on predictability.
- Authors
Shimomura, Yoshio; Kobayashi, Ryotaro
- Abstract
The stride value predictor is a technology that eases the data dependency, a factor restricting program parallelism. This mechanism predicts the values that the instruction generates by using a Value History Table (VHT). The problem of conflict in the VHT is a factor limiting predictive performance. In order to reduce conflict in the VHT, we focus on predictability, proposing two schemes. One consists of updating the only predictable instructions to the VHT, and the other consists of reducing the replacement frequency of the VHT. The evaluation results show that improving the predictive performance without increasing the number of entries of the VHT or decreasing the number of VHT entries at the cost of a small predictive performance loss becomes possible by the addition of a small-scale dedicated table. © 2012 Wiley Periodicals, Inc. Electron Comm Jpn, 95(5): 8-20, 2012; Published online in Wiley Online Library (). DOI 10.1002/ecj.10424
- Subjects
COMPUTER software execution; MICROPROCESSORS; CENTRAL processing units; EVALUATION methodology; ELECTRONIC circuits
- Publication
Electronics & Communications in Japan, 2012, Vol 95, Issue 5, p8
- ISSN
1942-9533
- Publication type
Article
- DOI
10.1002/ecj.10424