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IEICE TRANSACTIONS on Fundamentals

Utilization of Path-Clustering in Efficient Stress-Control Gate Replacement for NBTI Mitigation

Shumpei MORITA, Song BIAN, Michihiro SHINTANI, Masayuki HIROMOTO, Takashi SATO

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Summary :

Replacement of highly stressed logic gates with internal node control (INC) logics is known to be an effective way to alleviate timing degradation due to NBTI. We propose a path clustering approach to accelerate finding effective replacement gates. Upon the observation that there exist paths that always become timing critical after aging, critical path candidates are clustered to select representative path in each cluster. With efficient data structure to further reduce timing calculation, INC logic optimization has first became tractable in practical time. Through the experiments using a processor, 171x speedup has been demonstrated while retaining almost the same level of mitigation gain.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E100-A No.7 pp.1464-1472
Publication Date
2017/07/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E100.A.1464
Type of Manuscript
Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category

Authors

Shumpei MORITA
  Kyoto University
Song BIAN
  Kyoto University
Michihiro SHINTANI
  Kyoto University
Masayuki HIROMOTO
  Kyoto University
Takashi SATO
  Kyoto University

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