Harvard Mixed-Signal VLSI

Combining Circuits & Architecture to Combat Variability

Research Overview

Our research activities cover various aspects of mixed-signal VLSI circuits and systems design. We have multiple projects in high-speed links and building blocks that investigate techniques to push performance and reduce power. We are actively pursuing projects related to collaborative software + architecture + circuit techniques to efficiently tackle variability in nanoscale IC technologies in collaboration with architecture and systems groups at Harvard.  We also combine circuits and architecture to build high-performance, low-power computing devices via specialization for wireless sensor networks and chip multiprocessors.

Links to pdfs of Prof. Gu-Yeon Wei’s updated research narrative and CV.

Recent and Upcoming Publications

· Software-assisted hardware reliability: Abstracting circuit-level challenges to the software stack
Vijay J. Reddi, Simone Campanoni,  Meeta S. Gupta,
        Michael D. Smith, Gu-Yeon Wei and David Brooks
Design Automation Conference (DAC), to be presented July 2009.

· A 7.5-GS/s 3.8-ENOB 52-mW flash ADC with clock duty cycle control in 65nm CMOS
Hayun Chung, Alexander Rylyakov, Zeynep T. Deniz, John Bulzacchelli,
        Gu-Yeon Wei and Daniel Friedman
Symposium on VLSI Circuits (VLSI), to be presented June 2009.

· Thread Motion: Fine-grained power management for multi-core systems
Krishna R. Rangan, Gu-Yeon Wei and David Brooks
International Symposium on Computer Architecture (ISCA), to be presented June 2009.

· Milligram-scale high-voltage power electronics for piezoelectric microrobots
Michael Karpelson, Gu-Yeon Wei and Robert J. Wood
International Conference on Robotics and Automation (ICRA), May 2009.

· An Event-Guided Approach to Handling Inductive Noise in Processors
Meeta S. Gupta, Vijay J. Reddi, Michael D. Smith, Gu-Yeon Wei and David Brooks
Design, Automation and Test in Europe (DATE), April 2009.

· Place and route considerations for voltage interpolated designs
Kevin Brownell, A. Durlov Khan, David Brooks and Gu-Yeon Wei
International Symposium on Quality Electronics Design (ISQED), March 2009.

· Voltage Noise: Why it’s bad and what to do about it
Vijay J. Reddi, Meeta S. Gupta, Glenn Holloway, Michael D. Smith, Gu-Yeon Wei and David Brooks
IEEE Workshop on Silicon Errors in Logic — System Effects (SELSE), March 2009.

· Voltage emergency prediction: A signature-based approach to reducing voltage emergencies
Vijay J. Reddi, Meeta S. Gupta, Glenn Holloway, Michael D. Smith, Gu-Yeon Wei and David Brooks
International Symposium on High-Performance Computer Architecture (HPCA),
Feb. 2009. Best paper.

Complete List of Publications

(Last edited: 10 June 2009)

Opportunities:

· Postdoctoral positions

· Graduate research

· Undergraduate research

News and Events:

· See VJ’s paper on software-assisted HW reliability at 2009 DAC in San Francisco, CA

· See Hayun’s paper on flash ADC’s for high-speed links at 2009 Symp. on VLSI Circuits in Kyoto, Japan

· See Krishna’s paper on Thread Motion at 2009 ISCA in Austin, TX

· Congratulations to
VJ Reddi et al. for
best paper award at 2009 HPCA

· See Xiaoyao’s ReVIVaL paper in the Top Picks issue of IEEE micro, Jan/Feb 2009