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- Network-on-chip (2)
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- Computer systems (1)
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Articles 1 - 9 of 9
Full-Text Articles in Engineering
Libsbolj 2.0: A Java Library To Support Sbol 2.0, Zhen Zhang, Tramy Nguyen, Nicholas Roehner, Goksel Misirli, Matthew Pocock, Ernst Oberortner, Meher Samineni, Zach Zundel, Jacob Beal, Kevin Clancy, Anil Wipat, Chris J. Myers
Libsbolj 2.0: A Java Library To Support Sbol 2.0, Zhen Zhang, Tramy Nguyen, Nicholas Roehner, Goksel Misirli, Matthew Pocock, Ernst Oberortner, Meher Samineni, Zach Zundel, Jacob Beal, Kevin Clancy, Anil Wipat, Chris J. Myers
Electrical and Computer Engineering Faculty Publications
The Synthetic Biology Open Language (SBOL) is an emerging data standard for representing synthetic biology designs. The goal of SBOL is to improve the reproducibility of these designs and their electronic exchange between researchers and/or genetic design
Darp-Mp: Dynamically Adaptable Resilient Pipeline Design In Multicore Processors, Hu Chen, Sanghamitra Roy, Koushik Chakraborty
Darp-Mp: Dynamically Adaptable Resilient Pipeline Design In Multicore Processors, Hu Chen, Sanghamitra Roy, Koushik Chakraborty
Electrical and Computer Engineering Faculty Publications
In this article, we demonstrate that the sensitized path delays in various microprocessor pipe stages exhibit intriguing temporal and spatial variations during the execution of real-world applications. To effectively exploit these delay variations, we propose dynamically adaptable resilient pipeline (DARP)-a series of runtime techniques to boost power-performance efficiency and fault tolerance in a pipelined microprocessor. DARP employs early error prediction to avoid amajor portion of the timing errors.We combine DARP with the state-of-art topologically homogeneous and power-performance heterogeneous (THPH) architecture to build up a new frontier for the energy efficiency of multicore processors (DARP-MP). Using a rigorous circuitarchitectural infrastructure, we …
Runtime Detection Of A Bandwidth Denial Attack From A Rogue Network-On-Chip, Rajesh Jayashankarashridevi, Dean Michael Ancajas, Koushik Chakraborty, Sanghamitra Roy
Runtime Detection Of A Bandwidth Denial Attack From A Rogue Network-On-Chip, Rajesh Jayashankarashridevi, Dean Michael Ancajas, Koushik Chakraborty, Sanghamitra Roy
Electrical and Computer Engineering Faculty Publications
In this paper, we propose a covert threat model for MPSoCs designed using 3rd party Network-on-Chips (NoC). We illustrate that a malicious NoC can disrupt the availability of on-chip resources, thereby causing large performance bottlenecks for the software running on the MPSoC platform. We then propose a runtime latency auditor that enables an MPSoC integrator to monitor the trustworthiness of the deployed NoC throughout the chip lifetime. For the proposed technique, our comprehensive cross-layer analysis indicates modest overheads of 12.73% in area, 9.844% in power and 5.4% in terms of network latency.
Tackling Voltage Emergencies In Noc Through Timing Error Resilience., Rajesh Jayashankarashridevi, Dean Michael Ancajas, Koushik Chakraborty, Sanghamitra Roy
Tackling Voltage Emergencies In Noc Through Timing Error Resilience., Rajesh Jayashankarashridevi, Dean Michael Ancajas, Koushik Chakraborty, Sanghamitra Roy
Electrical and Computer Engineering Faculty Publications
Aggressive technology scaling exacerbates the problem of voltage emergencies in emerging MPSoC systems. Network-on-Chips, the de-facto standard for connecting on-chip components in forthcoming devices play a central role in providing robust and reliable communication. In this work, we propose DrNoC (droop resilient network-on-chip)-two microarchitectural techniques to mitigate voltage emergency-induced timing errors in NoCs and preserve error-free communication throughout the network. DrNoC employs frequency downscaling and a pipeline error-recovery mechanism to reclaim corrupted flits in the router. Compared to the recently proposed NSFTR fault-tolerant technique, DrNoC offers a 27% improvement in energy-delay efficiency.
Opportunistic Turbo Execution In Ntc: Exploiting The Paradigm Shift In Performance Bottlenecks., Hu Chen, Dieudonne Manzi, Sanghamitra Roy, Koushik Chakraborty
Opportunistic Turbo Execution In Ntc: Exploiting The Paradigm Shift In Performance Bottlenecks., Hu Chen, Dieudonne Manzi, Sanghamitra Roy, Koushik Chakraborty
Electrical and Computer Engineering Faculty Publications
In this paper, we investigate an intriguing shifting trend in performance bottlenecks for Near-Threshold Computing (NTC) processors. Our study demonstrates that the traditional memory latency bottleneck is largely superseded by the bottlenecks of Long Latency Datapaths (LLDs) within a processor core. To exploit this paradigm shift, we propose Opportunistic Turbo Execution (OTE). OTE dynamically boosts the performance of LLDs, by several factors, improving both performance and energy efficiency in an NTC core. Using a comprehensive circuit-architectural analysis, we demonstrate a 42.2% improvement in energy efficiency over a recently proposed technique, across a range of benchmarks.
Automatic Registration Of Fused Lidar/Digital Imagery (Texel Images) For Three-Dimensional Image Creation, Scott E. Budge, Neeraj S. Badamikar, Xuan Xie
Automatic Registration Of Fused Lidar/Digital Imagery (Texel Images) For Three-Dimensional Image Creation, Scott E. Budge, Neeraj S. Badamikar, Xuan Xie
Electrical and Computer Engineering Faculty Publications
Several photogrammetry-based methods have been proposed that the derive three-dimensional (3-D) information from digital images from different perspectives, and lidar-based methods have been proposed that merge lidar point clouds and texture the merged point clouds with digital imagery. Image registration alone has difficulty with smooth regions with low contrast, whereas point cloud merging alone has difficulty with outliers and a lack of proper convergence in the merging process. This paper presents a method to create 3-D images that uses the unique properties of texel images (pixel-fused lidar and digital imagery) to improve the quality and robustness of fused 3-D images. …
Wearout Resilience In Nocs Through An Aging Aware Adaptive Routing Algorithm, Dean Michael Ancajas, Kshitij Bhardwaj, Koushik Chakraborty, Sanghamitra Roy
Wearout Resilience In Nocs Through An Aging Aware Adaptive Routing Algorithm, Dean Michael Ancajas, Kshitij Bhardwaj, Koushik Chakraborty, Sanghamitra Roy
Electrical and Computer Engineering Faculty Publications
Continuous technology scaling has made aging mechanisms, such as negative bias temperature instability and electromigration primary concerns in network-on-chip (NoC) designs. In this paper, we extensively analyze the effects of these aging mechanisms on NoC routers and links. We observe a critical need of a robust aging-aware routing algorithm that not only reduces power-performance overheads caused due to aging degradation, but also minimizes the stress experienced by heavily utilized routers and links. To solve this problem, we propose an aging-aware adaptive routing algorithm and a router microarchitecture that routes the packets along the paths, which are both least congested and …
Textured Digital Elevation Model Formation From Low-Cost Uav Ladar/Digital Image Data, Taylor C. Bybee, Scott Budge
Textured Digital Elevation Model Formation From Low-Cost Uav Ladar/Digital Image Data, Taylor C. Bybee, Scott Budge
Electrical and Computer Engineering Faculty Publications
Textured digital elevation models (TDEMs) have valuable use in precision agriculture, situational awareness, and disaster response. However, scientific-quality models are expensive to obtain using conventional aircraft-based methods. The cost of creating an accurate textured terrain model can be reduced by using a low-cost (<$20k) UAV system fitted with ladar and electro-optical (EO) sensors. A texel camera fuses calibrated ladar and EO data upon simultaneous capture, creating a texel image. This eliminates the problem of fusing the data in a post-processing step and enables both 2D- and 3D-image registration techniques to be used. This paper describes formation of TDEMs using simulated data from a small UAV gathering swaths of texel images of the terrain below. Being a low-cost UAV, only a coarse knowledge of position and attitude is known, and thus both 2D- and 3D-image registration techniques must be used to register adjacent swaths of texel imagery to create a TDEM. The process of creating an aggregate texel image (a TDEM) from many smaller texel image swaths is de- scribed. The algorithm is seeded with the rough estimate of position and attitude of each capture. Details such as the required amount of texel image overlap, registration models, simulated flight patterns (level and turbulent), and texture image formation are presented. In addition, examples of such TDEMs are shown and analyzed for accuracy.
Synthetic Biology Open Language (Sbol) Version 2.0.0, Bryan Bartley, Jacob Beal, Kevin Clancy, Goksel Misirli, Nicholas Roehner, Ernst Oberortner, Matthew Pocock, Michael Bissell, Curtis Madsen, Tramy Nguyen, Zhen Zhang, John H. Gennari, Chris Myers, Anil Wipat, Herbert Sauro
Synthetic Biology Open Language (Sbol) Version 2.0.0, Bryan Bartley, Jacob Beal, Kevin Clancy, Goksel Misirli, Nicholas Roehner, Ernst Oberortner, Matthew Pocock, Michael Bissell, Curtis Madsen, Tramy Nguyen, Zhen Zhang, John H. Gennari, Chris Myers, Anil Wipat, Herbert Sauro
Electrical and Computer Engineering Faculty Publications
Synthetic biology builds upon the techniques and successes of genetics, molecular biology, and metabolic engineering by applying engineering principles to the design of biological systems. The field still faces substantial challenges, including long devel