A Global Bayesian Optimization Algorithm and Its Application to Integrated System Design

Increasing levels of system integration pose difficulties in meeting design specifications for high-performance systems. Oftentimes increased complexity, nonlinearity, and multiple tradeoffs need to be handled simultaneously during the design cycle. Since components in such systems are highly correl...

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Veröffentlicht in:IEEE transactions on very large scale integration (VLSI) systems Jg. 26; H. 4; S. 792 - 802
Hauptverfasser: Torun, Hakki Mert, Swaminathan, Madhavan, Kavungal Davis, Anto, Bellaredj, Mohamed Lamine Faycal
Format: Journal Article
Sprache:Englisch
Veröffentlicht: IEEE 01.04.2018
Schlagworte:
3-D integration
Algorithm design and analysis
Bayes methods
Bayesian optimization (BO)
black box systems
Integrated circuit modeling
integrated voltage regulator (IVR)
machine learning (ML)
magnetic core inductor
Minimization
Optimization
thermal management
Tuning
ISSN:1063-8210, 1557-9999
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Zusammenfassung:Increasing levels of system integration pose difficulties in meeting design specifications for high-performance systems. Oftentimes increased complexity, nonlinearity, and multiple tradeoffs need to be handled simultaneously during the design cycle. Since components in such systems are highly correlated with each other, codesign and co-optimization of the complete system are required. Machine learning (ML) provides opportunities for analyzing such systems with multiple control parameters, where techniques based on Bayesian optimization (BO) can be used to meet or exceed design specifications. In this paper, we propose a new BO-based global optimization algorithm titled Two-Stage BO (TSBO). TSBO can be applied to black box optimization problems where the computational time can be reduced through a reduction in the number of simulations required. Empirical analysis on a set of popular challenge functions with several local extrema and dimensions shows TSBO to have a faster convergence rate as compared with other optimization methods. In this paper, TSBO has been applied for clock skew minimization in 3-D integrated circuits and multiobjective co-optimization for maximizing efficiency in integrated voltage regulators. The results show that TSBO is between <inline-formula> <tex-math notation="LaTeX">2\times </tex-math></inline-formula>-<inline-formula> <tex-math notation="LaTeX">4\times </tex-math></inline-formula> faster as compared with previously published BO algorithms and other non-ML-based techniques.
ISSN:1063-8210
1557-9999
DOI:10.1109/TVLSI.2017.2784783