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Transient Error Resilient Hessenberg Reduction on GPU-based Hybrid Architectures

by Yulu Jia, Piotr Luszczek, Jack J. Dongarra
"... Graphics Processing Units (GPUs) are gaining wide spread usage in the field of scientific computing owing to the performance boost GPUs bring to computation intensive applications. The typical configuration is to integrate GPUs and CPUs in the same system where the CPUs handle the control flow and p ..."
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and part of the computation workload, and the GPUs serve as accelerators carry out the bulk of the data parallel compute workload. In this paper we design and implement a soft error resilient Hessenberg reduction algorithm on GPU based hybrid platforms. Our design employs algorithm based fault tolerance

CPU-GPU Hybrid Bidiagonal Reduction With Soft Error Resilience

by Yulu Jia , Piotr Luszczek , George Bosilca , Jack J Dongarra
"... ABSTRACT Soft errors pose a real challenge to applications running on modern hardware as the feature size becomes smaller and the integration density increases for both the modern processors and the memory chips. Soft errors manifest themselves as bit-flips that alter the user value, and numerical ..."
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software is a category of software that is sensitive to such data changes. In this paper, we present a design of a bidiagonal reduction algorithm that is resilient to soft errors, and we also describe its implementation on hybrid CPU-GPU architectures. Our fault-tolerant algorithm employs Algorithm Based

Wireless Sensor Networking in Challenging Environments

by Mo Sha, Raj Jain, Jonathan Turner, Guoliang Xing, Mo Sha , 2014
"... This Dissertation is brought to you for free and open access by Washington University Open Scholarship. It has been accepted for inclusion in All Theses and Dissertations (ETDs) by an authorized administrator of Washington University Open Scholarship. For more information, please contact ..."
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This Dissertation is brought to you for free and open access by Washington University Open Scholarship. It has been accepted for inclusion in All Theses and Dissertations (ETDs) by an authorized administrator of Washington University Open Scholarship. For more information, please contact

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by Chien-liang Fok, Chris Gill, Christine Julien, Caitlin Kelleher , 2009
"... Abstract: Mobile ad hoc networks (MANETs) and wireless sensor networks (WSNs) are two recently-developed technologies that uniquely function without xed infrastructure support, and sense at scales, resolutions, and durations previously not possible. While both offer great potential in many applicati ..."
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Abstract: Mobile ad hoc networks (MANETs) and wireless sensor networks (WSNs) are two recently-developed technologies that uniquely function without xed infrastructure support, and sense at scales, resolutions, and durations previously not possible. While both offer great potential in many applications, developing software for these types of networks is extremely dffcult, preventing their wide-spread use. Three primary challenges are (1) the high level of dynamics within the network in terms of changing wireless links and node hardware con gurations, (2) the wide variety of hardware present in these networks, and (3) the extremely limited computational and energy resources available. Until now, the burden of handling these issues was put on the software application developer. This dissertation presents three novel programming models and middleware systems that address these challenges: Limone, Agilla, and Servilla. Limone reliably handles high levels of dynamics within MANETs. It does this through lightweight coordination primitives that make minimal assumptions about network connectivity. Agilla enables self-adaptive WSN applications via the integration of mobile agent and tuple space programming models, which is critical given the continuously changing network. It is the rst system to successfully demonstrate the feasibility of using mobile agents and tuple spaces within

Guaranteeing Communication Quality in Real World WSN Deployments

by Fbk-irst Bruno, Kessler Foundation, Matteo Ceriotti, Dr. Amy, L. Murphy, Bruno Kessler Foundation (fbk-irst, Amy L. Murphy, Prof Prabal Dutta, Prof Koen Langendoen, Prof Leo Selavo
"... April 29, 2011Für UnsShe had never before seen a rabbit with either a waistcoat-pocket, or a watch to take out of it, and burning with curiosity, she ran across the field after it Lewis CarrollThe following document, written under the supervision of Dr. reviewed by: ..."
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April 29, 2011Für UnsShe had never before seen a rabbit with either a waistcoat-pocket, or a watch to take out of it, and burning with curiosity, she ran across the field after it Lewis CarrollThe following document, written under the supervision of Dr. reviewed by:
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