Submitted for 40 TH DAC Student Design Contest 1 Analog Turbo Decoder Implemented in SiGe (2008)
Bicmos Technology, Wei Huang, Vinay Igure, Garrett Rose, Yan Zhang, Mircea Stan
Abstract—Error correcting decoder’s performance is crucial for communication systems. Since the performance of Turbo codes is close to the Shannon limit, ultra high-speed turbo decoder is...
Mircea Stan, David Garrett, Abhimanyu Kolla, Zaid Salman
There is renewed interest in the field of analog and mixed-signal circuits, especially among designers of high-speed and wireless communication systems. Due to the typical custom design approach, a...
EXPERIENCES USING FPGAS FOR TEMPERATURE-AWARE MICROARCHITECTURE RESEARCH (2008)
Siva Velusamy, Wei Huang, John Lach, Mircea Stan, Kevin Skadron
Ever increasing microprocessor power densities has brought temperature-aware microarchitecture research to the forefront. In this paper, we describe our experiences in creating an FPGA based testbed...
Low-Power Design Environment for MOSIS (2007)
David Garrett, Joshua Garrett, Mircea Stan
The release of a CMOS low power library by the Infopad group at UC Berkeley gave engineers the ability to develop low power circuits with standard cells in Magic with minimum geometry layouts [1]. We...
Mircea Stan, David Garrett, Abhimanyu Kolla, Zaid Salman
There is renewed interest in the field of analog and mixed-signal circuits, especially among designers of high-speed and wireless communication systems. Due to the typical custom design approach, a...
Low Power, David Garrett, Mircea Stan
Abstract- Direct Sequence Spread Spectrum (DSSS) transmissions require a despreading stage within the standard receiver block to recover the spread spectrum signal. For long spread spectrum codes,...
Dynamic Way Allocation for High Performance, Low Power Caches (2007)
Matthew Ziegler Adam, Adam Spanberger, Ganesh Pai, Mircea Stan, Kevin Skadron
Introduction Current cache configurations are inflexible. They cannot be customized for the needs of individual programs. Concurrent processes often have negative effects on each other's cache...
Zhijian Lu, Wei Huang, Mircea Stan, Kevin Skadron, John Lach
Thermal effects are becoming a limiting factor in high performance circuit design due to the strong temperature dependence of leakage power, circuit performance, IC package cost and reliability....
Design and implementation of an energy efficient multimedia playback system (2006)
Zhijian Lu, John Lach, Mircea Stan, Kevin Skadron
Mobile devices capable of multimedia playback have become popular consumer items, making techniques for energy management during multimedia decoding increasingly important. In this paper, we model...
Procrastinating voltage scheduling with discrete frequency sets (2006)
Zhijian Lu, Yan Zhang, Mircea Stan, John Lach, Kevin Skadron
This paper presents an efficient method to find the optimal intra-task voltage/frequency scheduling for single tasks in practical real-time systems using statistical workload information. Our method...
Procrastinating voltage scheduling with discrete frequency sets (2006)
Zhijian Lu, Yan Zhang, Mircea Stan, John Lach, Kevin Skadron
This paper presents an efficient method to find the optimal intra-task voltage/frequency scheduling for single tasks in practical real-time systems using statistical workload information. Our method...
A case for thermal-aware floorplanning at the microarchitectural level (2005)
Karthik Sankaranarayanan, Sivakumar Velusamy, Mircea Stan, Charles L, Kevin Skadron
In current day microprocessors, exponentially increasing power densities, leakage, cooling costs, and reliability concerns have resulted in temperature becoming a first class design constraint like...
Banking chip lifetime: Opportunities and implementation (2005)
Zhijian Lu, John Lach, Mircea Stan, Kevin Skadron
Most existing integrated circuit reliability models assume a uniform, typically worst-case, operating temperature, but temporal and spatial temperature variations affect expected device lifetime. As...
Temperature-Aware Modeling and Banking of IC Lifetime Reliability (2005)
Zhijian Lu, John Lach, Mircea Stan, Kevin Skadron
Most existing integrated circuit (IC) reliability models assume a uniform, typically worst-case, operating temperature, but temporal and spatial temperature variations affect expected device...
Monitoring temperature in FPGA based SoCs (2005)
Siva Velusamy, Wei Huang, John Lach, Mircea Stan, Kevin Skadron
FPGA logic densities continue to increase at a tremendous rate. This has had the undesired consequence of increased power density, which manifests itself as higher ondie temperatures and local...
Microarchitectural floorplanning for thermal management: A technical report (2005)
Karthik Sankaranarayanan, Sivakumar Velusamy, Kevin Skadron, Mircea Stan
In current day microprocessors, exponentially increasing power densities, leakage, cooling costs, and reliability concerns have resulted in temperature becoming a first class design constraint like...
Power-Aware Branch Prediction: Characterization and Design (2004)
Dharmesh Parikh, Kevin Skadron, Yan Zhang, Mircea Stan
This paper uses Wattch and the SPEC 2000 integer and floating-point benchmarks to explore the role of branch predictor organization in power/energy/performance tradeoffs for processor design. Even...
Analysis of Temporal and Spatial Temperature Gradients for IC Reliability (2004)
Zhijian Lu, Wei Huang, Shougata Ghosh, John Lach, Mircea Stan, Kevin Skadron
One of the most common causes of IC failure is interconnect electromigration (EM), which exhibits a rate that is exponentially dependent on temperature. As a result, EM rate is one of the major...
State-Preserving vs. Non-State-Preserving Leakage Control in Caches (2004)
Dharmesh Parikh, Yan Zhang, Karthik Sankaranarayanan, Kevin Skadron, Mircea Stan
This paper compares the effectiveness of statepreserving and non-state-preserving techniques for leakage control in caches by comparing drowsy cache and gated-V¦§ ¦ for data caches using 70nm...
The Importance of Temporal and Spatial Temperature Gradients in IC (2004)
Reliability Analysis Univ, Wei Huang, Zhijian Lu, Shougata Ghosh, John Lach, Mircea Stan, ...
Existing IC reliability models assume a uniform, typically worst-case, operating temperature, but temporal and spatial temperature variations affect expected device lifetime. This paper presents a...
Power-Aware Branch Prediction: Characterization and Design (2004)
Dharmesh Parikh, Kevin Skadron, Yan Zhang, Student Member, Mircea Stan, Senior Member
Abstract—This paper uses Wattch and the SPEC 2000 integer and floating-point benchmarks to explore the role of branch predictor organization in power/energy/performance trade offs for processor...
State-Preserving vs. Non-State-Preserving Leakage Control in Caches (2004)
Yingmin Li, Dharmesh Parikh, Yan Zhang, Karthik Sankaranarayanan, Mircea Stan
yingmin,dharmesh,karthick,skadron¥ This paper compares the effectiveness of statepreserving and non-state-preserving techniques for leakage control in caches by comparing drowsy cache and gated-V ¦...
State-Preserving vs. Non-State-Preserving Leakage Control in Caches (2004)
Yingmin Li, Dharmesh Parikh, Yan Zhang, Karthik Sankaranarayanan, Mircea Stan, Kevin Skadron
yingmin,dharmesh,karthick,skadron¥ This paper compares the effectiveness of statepreserving and non-state-preserving techniques for leakage control in caches by comparing drowsy cache and...
State-Preserving vs. Non-State-Preserving Leakage Control in Caches (2004)
Dharmesh Parikh, Yan Zhang, Karthik Sankaranarayanan, Kevin Skadron, Mircea Stan
This paper compares the effectiveness of state-preserving and non-state-preserving techniques for leakage control in caches by comparing drowsy cache and gated-V§¨ § for data caches using 70nm...
Interconnect lifetime prediction under dynamic stress for reliability-aware design (2004)
Zhijian Lu, Wei Huang, John Lach, Mircea Stan, Kevin Skadron
Thermal effects are becoming a limiting factor in highperformance circuit design due to the strong temperaturedependence of leakage power, circuit performance, IC package cost and reliability. While...
Interconnect Lifetime Prediction for Temperature-Aware Design (2003)
Univ Of Virginia, Zhijian Lu, Mircea Stan, John Lach, Kevin Skadron
Thermal e#ects are becoming a limiting factor in high-performance circuit design due to the strong temperature-dependence of leakage power, circuit performance, IC package cost and reliability....
HotLeakage: A Temperature-Aware Model of Subthreshold and Gate Leakage for Architects (2003)
Yan Zhang, Dharmesh Parikh, Karthik Sankaranarayanan, Kevin Skadron, Mircea Stan
This report introduces HotLeakage, an architectural model for subthreshold and gate leakage that we have developed here at the University of Virginia. The most important features of HotLeakage are...
HotLeakage: A Temperature-Aware Model of Subthreshold and Gate Leakage for Architects (2003)
Yan Zhang, Dharmesh Parikh, Karthik Sankaranarayanan, Kevin Skadron, Mircea Stan
This report introduces HotLeakage, an architectural model for subthreshold and gate leakage that we have developed here at the University of Virginia. The most important features of HotLeakage are...
Reducing multimedia decode power using feedback control (2003)
Zhijian Lu, John Lach, Mircea Stan
Despite recent advances, battery life continues to be a limiting factor in mobile multimedia systems. Significant energy savings can be achieved by adapting systems at runtime to match the execution...
Hotleakage: A temperature-aware model of subthreshold and gate leakage for architects (2003)
Yan Zhang, Dharmesh Parikh, Karthik Sankaranarayanan, Kevin Skadron, Mircea Stan
This report introduces HotLeakage, an architectural model for subthreshold and gate leakage that we have developed here at the University of Virginia. The most important features of HotLeakage are...
Daniel Ceperley, Minh Duc Nguyen, Andrew Perez-lopez, Arun Thomas, Mircea Stan, Ronald Williams
Emergency rescue workers respond rapidly to a variety of dangerous situations trying to save lives. In so doing, they put their own lives on the line. In interviews with Charlottesville rescue...
Cache-Conscious Allocation of Pointer-Based Data Structures Revisited with (2002)
Josefin Hallberg, Tuva Palm, Mats Brorsson, Dharmesh Parikh, Yan Zhang, ...
As memory access times continue to be a bottleneck, differential research is required for better understanding of memory access performance. Studies of cache-conscious allocation and software...
Control-theoretic dynamic frequency and voltage scaling for multimedia workloads (2002)
Zhijian Lu, Jason Hein, Marty Humphrey, Mircea Stan, John Lach, Kevin Skadron
This paper describes a formal feedback-control algorithm for dynamic voltage/frequency scaling (DVS) in a portable multimedia system to save power while maintaining a desired playback rate. Our...
Control-theoretic dynamic frequency and voltage scaling for multimedia workloads (2002)
Zhijian Lu, Jason Hein, Mircea Stan, John Lach, Kevin Skadron
This paper describes a formal feedback-control algorithm for dynamic voltage/frequency scaling (DVS) in a portable multimedia system to save power while maintaining a desired playback rate. Our...
Control-theoretic dynamic frequency and voltage scaling for multimedia workloads (2002)
Zhijian Lu, Jason Hein, Mircea Stan, John Lach
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Bruce Childers, Martin Schulz, Sally Mckee, Bruce Childers, Martin Schulz, Sally A. Mckee, ...
This year's Parallel Architectures and Compilation Techniques (PACT 2001) includes for the first time a Work-In-Progress session. We received many excellent short abstract – some of which were...
Microarchitectural Floorplanning for Thermal Management: A Technical Report (1998)
Sankaranarayanan, Karthik, Velusamy, Sivakumar, Skadron, Kevin, Stan, Mircea
In current day microprocessors, exponentially increasing power densities, leakage, cooling costs, and reliability concerns have resulted in temperature becoming a first class design constraint like...
Low Power Encoding for VLSI and ECC Duals (1998)
Different branches of information theory are strongly related, and many classical problems are in some sense "duals" with their duality appearing in the Euclidean space (with Euclidean...
Low Power Architecture of the Soft-Output Viterbi Algorithm (1998)
This paper investigates the low power implementation issues of the soft-output Viterbi algorithm (SOVA), a building block for turbo codes. By briefly explaining the theory of turbo codes, and by...
Power Reduction Techniques for a Spread Spectrum Based Correlator (1997)
This paper presents the design of a low power spread spectrum correlator. We look at two major approaches and evaluate the best alternative for power reduction. We first consider a shift register...
Advisor Prof, Kevin Skadron, Co-advisor Prof, Mircea Stan, Chennai India
An industrial research and development position in the areas of computer architecture and its allied disciplines. My current expertise includes power- and thermal-aware modeling and management of...
Analog VLSI for Robot Path Planning (1994)
Mircea Stan, Wayne P. Burleson, Christopher I. Connolly, Roderic A. Grupen
: Analog VLSI provides a convenient and high-performance engine for robot path planning. Laplace's equation is a useful formulation of the path planning problem; however, digital solutions are...
Analog VLSI for Robot Path Planning (1994)
Analog VLSI provides a convenient and highperformance engine for robot path planning. Laplace's equation is a useful formulation of the path planning problem, however digital solutions are very...