Jan 11, 2012
Variability-resistant Software and Hardware for Nano-Scale Computing
Nikil Dutt
25th International Conference on VLSI Design 2012, Hyderabad, India
UC Irvine PI Nikil Dutt delivered this tutorial with fellow Variability Expedition PIs Mani Srivastava, Rajesh Gupta and Subhasish Mitra.

Jan 7, 2012
Variability-Resistant Software and Hardware for Nano-Scale Computing
Nikil Dutt, UC Irvine
25th International Conference on VLSI Design (VLSID) 2012
Dr. Dutt's all-day tutorial at VLSID 2012 took place in Hyderabad, India. Tutorial speakers included Variability PIs Rajesh Gupta, Subhasish Mitra, and Mani Srivastava.

Jan 4, 2012
Flexible coding schemes with applications to emerging memory technologies
Lara Dolecek, UCLA
American Mathematical Society Annual Meeting 2012
In this talk co-PI Lara Dolecek discussed a novel class of non-binary coding schemes for a channel model arising in emerging memory technologies.

Dec 22, 2011
Exploiting Unreliable Embedded Memories
Nikil Dutt
International Symposium on Electronic System Design (ISED 2011)
With co-author Luis A.D. Bathen, UC Irvine PI Nikil Dutt surveyed a serioes of hardware and software schemes that both ameliorate poor reliability, and exploit unreliable embedded memories through hardware and software mechanisms in order to achieve a low-power, fault-tolerant memory space, and keep production yield at tolerable levels.

Dec 19, 2011
Exploiting Errors for Low Power On-Chip Memories
Nikil Dutt, UC Irvine
International Symposium on Electronic System Design (ISED) 2011
This plenary keynote speech was delivered at ISED 2011 in Kochi, India.

Nov 1, 2011
Variability-Aware Tasking for Wireless Sensor Networks
Lucas Wanner, Rahul Balani, Puneet Gupta and Mani Srivastava
UCLA EE Department Annual Research Review

Oct 17, 2011
Hardware Variability-Aware Duty Cycling for Embedded Sensors
Lucas Wanner, Graduate Student, UCLA
Variability Expedition NSF Site Visit
A 50% improvement in inference quality for target localization is one of results achieved with variability-aware duty cycling.

Oct 17, 2011
Molecule: An Experimental Testbed for Variability Studies
Lucas Wanner, J. Tsao, Puneet Gupta and Mani Srivastava
Variability Expedition NSF Site Visit

Oct 17, 2011
Low-Cost Disaggregation of Sub-System Power
Y. Sun, L. Wanner, P. Gupta and M. Srivastava
Variability Expedition NSF Site Visit
Objective: sub-system power with only one system-wide power meter.
Presentation Materials: Download

Oct 17, 2011
Virtualization-based Testbed for Variability-Aware Software
L. Wanner, G. Rane, P. Gupta and M. Srivastava
Variability Expedition NSF Site Visit
The primary goal is quick prototyping, testing and evaluation of variability-aware software.
Presentation Materials: Download

Oct 13, 2011
Memory Virtualization and Security for Embedded Systems
Nikil Dutt, UC Irvine
Workshop on Embedded Systems Security (WESS) 2011
This talk was presented at WESS 2011 in Taipei, Taiwan.

Sep 18, 2011
Invited Lecture
Subhasish Mitra, Stanford University
IEEE International Test Conference 2011
Dr. Mitra delivered this lecture in Anaheim, Calif.

Aug 11, 2011
Extending Flash Memory Lifetime Using Coding Techniques
Ryan Gabrys, UCLA
Flash Memory Summit
This invited talk by UCLA grad student Ryan Gabrys was co-authored by Variability co-PI Lara Dolecek. The conference took place in San Jose, CA, and the talk led to several industry contacts.

Aug 3, 2011
OS-Level Power Minimization Under Tight Performance Constraints in General-Purpose Systems
Raid Ayoub, UC San Diego
Intl Symposium on Low Power Electronics and Design (ISLPED 2011), Fukuoka, Japan
The authors propose a new DVFS algorithm for enterprise systems that elevates performance as a first order control parameter and manages frequency and voltage as a function of performance requirements. Their algorithm is implemented on real Intel Westmere platform in Linux and they demonstrate its ability to reduce the standard deviation from target performance by more than 90% over state of the art policies while reducing average power by 17%.
Presentation Materials: Download

Jul 2, 2011
Robust Systems for Scaled CMOS and Beyond
Subhasish Mitra, Stanford University
IFIP Working Group 10.4 Dependable Computing and Fault Tolerance
The meeting took place in Taoyuan, Taiwan.
Presentation Materials: Download

Jun 15, 2011
Evaluating the Effectiveness of Model-Based Power Characterization
Yuvraj Agarwal, UC San Diego
USENIX Annual Technical Conference (USENIX ATC 2011)
At USENIX ATC 2011 in Portland, Oregon,the Variability Expedition Executive Director Yuvraj Agarwal will report on completed instrumentation of a server platform (Intel Willowbrook) and two mobile platforms (Intel Calpella and Sandybridge) for detailed power measurements. In experiments with the identical base calpella system but two instances of the same core i5-540 processor, the UCSD research team measured a 13 percent variability in power consumption for the same benchmarks with everything else kept constant.