Dissertations / Theses on the topic 'Parallel processing'
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Poggiali, Dario. "Parallel geometry processing." Zürich : ETH, Eidgenössische Technische Hochschule Zürich, cgl Computer Graphics Laboratory, 2008. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=393.
Full textHolt, C. M. "Quasi-parallel processing." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375244.
Full textZhang, Hua 1954. "Practical Parallel Processing." Thesis, University of North Texas, 1996. https://digital.library.unt.edu/ark:/67531/metadc278769/.
Full textSpray, Andrew J. C. "VLSI parallel processing architectures." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278108.
Full textCastro, Fernandez Raul. "Stateful data-parallel processing." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/31596.
Full textBibby, Geoffrey Thomas. "Digital image processing using parallel processing techniques." Thesis, Liverpool John Moores University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304539.
Full textGöthe, Katrin. "The limits of parallel processing." Phd thesis, Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2010/4606/.
Full textVersucht man zwei Aufgaben zur gleichen Zeit zu erledigen, so verschlechtert sich die Leistung einer oder beider Aufgabe(n) im Vergleich zur Situation, in der man beide Aufgaben einzeln erledigt. Die vorliegende Dissertation beschäftigt sich mit der Frage, warum und unter welchen Umständen diese Doppelaufgabenkosten entstehen. Darüber hinaus geht sie der Frage nach, ob es Aufgabenkombinationen gibt, für die parallele Verarbeitung ohne Kosten gezeigt werden kann. In vier Experimenten wurde der Einfluss von Stimulus-Reaktion (S-R) Kompatibilität, S-R Modalitätspaarungen, interindividueller Unterschiede und Training auf das Parallelverarbeitungspotential zweier Aufgaben untersucht. Die Ergebnisse zeigen, dass parallele Verarbeitung generell möglich ist. Dennoch entstehen Doppelaufgabenkosten, wenn die persönliche Verarbeitungsstrategie seriell ist, die beiden Aufgaben nicht genügend zusammen trainiert wurden, die S-R Kompatibilität beider Aufgaben gering ist (z.B. wenn ein linker Zielreiz mit einem Druck auf die rechten Taste beantwortet und in der anderen Aufgabe ein auditiv präsentiertes „A“ mit der Aussprache eines „Bs“ beantwortet werden muss) und die Modalitätspaarungen beider Aufgaben Nicht-Standard sind (d.h. visuell-räumliche Stimuli mit vokalen und auditiv-verbale Stimuli mit manuellen Reaktionen beantwortet werden müssen). Die gewonnenen Ergebnisse werden durch „Crosstalk“ der exekutiven Signale (S-R Kompatibilität) und durch inhaltsbasierten „Crosstalk“ (S-R Modalitätspaarungen) erklärt. Weiterhin wird ein alternatives Modell der Informationsverarbeitung mit Hinblick auf die zentrale Phase der Antwortauswahl (d.h. die Phase in der die Stimulusinformation in eine Antwort übersetzt wird) vorgestellt.
Tse, Kin Wing. "A parallel image processing system." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243204.
Full textTopham, N. P. "A parallel vector processing system." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370965.
Full textHo, Pi-Luen. "Parallel processing of robot control." Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293162.
Full textBeckett, Keith. "Real-time parallel SAR processing." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309878.
Full textFleury, Martin. "Efficient parallel image-processing software." Thesis, University of Essex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361038.
Full textKao, Frank. "Parallel processing interfaces to television." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/61817.
Full textVasconcellos, Brett W. (Brett William) 1977. "Parallel signal-processing for everyone." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9097.
Full textIncludes bibliographical references (p. 65-67).
We designed, implemented, and evaluated a signal-processing environment that runs on a general-purpose multiprocessor system, allowing easy prototyping of new algorithms and integration with applications. The environment allows the composition of modules implementing individual signal-processing algorithms into a functional application, automatically optimizing their performance. We decompose the problem into four independent components: signal processing, data management, scheduling, and control. This simplifies the programming interface and facilitates transparent parallel signal processing. For tested applications, our system both runs efficiently on single-processors systems and achieves near-linear speedups on symmetric-multiprocessor (SMP) systems.
by Brett W. Vasconcellos.
M.Eng.
de, Errico Luciano. "Agent-based distributed parallel processing." Thesis, University of Surrey, 1996. http://epubs.surrey.ac.uk/843822/.
Full textWang, Dalan. "Parallel architectures for signal processing." Thesis, University of Aberdeen, 1991. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU034219.
Full textJin, Xiaoming. "A practical realization of parallel disks for a distributed parallel computing system." [Gainesville, Fla.] : University of Florida, 2000. http://etd.fcla.edu/etd/uf/2000/ane5954/master.PDF.
Full textTitle from first page of PDF file. Document formatted into pages; contains ix, 41 p.; also contains graphics. Vita. Includes bibliographical references (p. 39-40).
Snell, Joshua. "Readers are parallel processors." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0244.
Full textThis thesis addresses one of the most hotly debated issues in reading research: Are words processed serially or in parallel during reading? One could argue that this is primarily a question of visuo-spatial attention: is attention distributed across multiple words during reading? The research presented here suggests that attention can indeed be allocated to multiple words at once. It is further established that attention is a key factor driving (sub-lexical) orthographic processing. The next question, then, is whether multiple lexical representations can be activated in parallel. This thesis comprises a wealth of evidence for parallel lexical activation: firstly we have found that readers activate embedded words (e.g., ‘use’ in ‘houses’) alongside the word that is to be recognized, indicating that parallel lexical processing would occur even if readers could effectively focus their attention on single words. Moreover, we have found that semantic and syntactic categorization decisions about foveal target words are influenced by the semantic and syntactic aspects of surrounding words, even when all these words are presented for a duration shorter than the average time needed to recognize a single word. Hence, given that readers’ attention is spread across multiple words and that multiple lexical representations can be activated in parallel, it seems reasonable to claim that the reading system is in principle a parallel processing system
Borlaug, Idar. "Seismic processing using Parallel 3D FMM." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-8792.
Full textThis thesis develops and tests 3D Fast Marching Method (FMM) algorithm and apply these to seismic simulations. The FMM is a general method for monotonically advancing fronts, originally developed by Sethian. It calculates the first arrival time for an advancing front or wave. FMM methods are used for a variety of applications including, fatigue cracks in materials, lymph node segmentation in CT images, computing skeletons and centerlines in 3D objects and for finding salt formations in seismic data. Finding salt formations in seismic data, is important for the oil industry. Oil often flows towards gaps in the soil below a salt formation. It is therefore, important to map the edges of the salt formation, for this the FMM can be used. This FMM creates a first arrival time map, which makes it easier to see the edges of the salt formation. Herrmann developed a 3D parallel algorithm of the FMM testing waves of constant velocity. We implemented and tested his algorithm, but since seismic data typically causes a large variation of the velocities, optimizations were needed to make this algorithm scale. By optimising the border exchange and eliminating much of the roll backs, we delevoped and implemented a much improved 3D FMM which achieved close to theoretical performance, for up to at least 256 nodes on the current supercomputer at NTNU. Other methods like, different domain decompositions for better load balancing and running more FMM picks simultaneous, will also be discussed.
Yilmaz, Erdal. "Massive Crowd Simulation With Parallel Processing." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611627/index.pdf.
Full textBoston, Marisa Ferrara, John T. Hale, Shravan Vasishth, and Reinhold Kliegl. "Parallel processing and sentence comprehension difficulty." Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5715/.
Full textMenich, Ronald Paul. "Resource allocation in parallel processing systems." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/28049.
Full textHandley-Schachler, Sybille H. "Applications of parallel processing to optimization." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240512.
Full textNicholas, Julian Jesuratnam. "Information processing in #parallel' visual pathways." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386633.
Full textEntwistle, Paul Martin. "Parallel processing for real-time control." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238434.
Full textNocetti, Demetrio Fabian Garcia. "Parallel processing in digital flight control." Thesis, Bangor University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278518.
Full textRozday, Jack. "Parallel processing using Enterprise Java Beans." Thesis, Leeds Beckett University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485770.
Full textHammes, M. R. "A node interface for parallel processing." Thesis, Nottingham Trent University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328205.
Full textLidstone, Patrick. "A dynamically reconfigurable parallel processing architecture." Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307286.
Full textSun, Wenjun. "Parallel data processing for semistructured data." Thesis, London South Bank University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434394.
Full textKlier, Peter. "A visual language for parallel processing." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/91316.
Full textChorão, Ricardo Daniel Domingos. "Parallel programming in biomedical signal processing." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8249.
Full textPatients with neuromuscular and cardiorespiratory diseases need to be monitored continuously. This constant monitoring gives rise to huge amounts of multivariate data which need to be processed as soon as possible, so that their most relevant features can be extracted. The field of parallel processing, an area from the computational sciences, comes naturally as a way to provide an answer to this problem. For the parallel processing to succeed it is necessary to adapt the pre-existing signal processing algorithms to the modern architectures of computer systems with several processing units. In this work parallel processing techniques are applied to biosignals, connecting the area of computer science to the biomedical domain. Several considerations are made on how to design parallel algorithms for signal processing, following the data parallel paradigm. The emphasis is given to algorithm design, rather than the computing systems that execute these algorithms. Nonetheless, shared memory systems and distributed memory systems are mentioned in the present work. Two signal processing tools integrating some of the parallel programming concepts mentioned throughout this work were developed. These tools allow a fast and efficient analysis of long-term biosignals. The two kinds of analysis are focused on heart rate variability and breath frequency, and aim to the processing of electrocardiograms and respiratory signals, respectively. The proposed tools make use of the several processing units that most of the actual computers include in their architecture, giving the clinician a fast tool without him having to set up a system specifically meant to run parallel programs.
Saeedi, Mohammed Hashem. "Parallel processing of frame-based networks." Thesis, Sheffield Hallam University, 1993. http://shura.shu.ac.uk/20308/.
Full textSheen, Timothy M. "Tools for portable parallel image processing." Thesis, University of Aberdeen, 1999. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU112832.
Full textHarrison, Ian. "Locality and parallel optimizations for parallel supercomputing." Diss., Connect to the thesis, 2003. http://hdl.handle.net/10066/1274.
Full textFerlin, Edson Pedro. "Avaliação de métodos de paralelização automática." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-09102008-111750/.
Full textThis work invoke some concepts and definitions about parallel processing, applicable in the automatic parallelization, and also the analysis and conditions for the data dependence, in order to apply the methods for parallelization: Hyperplane, Unimodular Transformation, Communication-Free Data Allocation and Partitioning & Labeling. On this way, transform a sequential program into an equivalent parallel one. Applying these programs on the distributed-memory system with communication through message-passing MPI (Message-Passing Interface), and we obtain some measurements for the evaluations/comparison between those methods.
Nader, Babak. "Parallel solution of sparse linear systems." Full text open access at:, 1987. http://content.ohsu.edu/u?/etd,138.
Full textGottemukkala, Vibby. "Scalability issues in distributed and parallel databases." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/8176.
Full textHulot, Carlos. "Parallel tracking systems." Thesis, University of Southampton, 1995. https://eprints.soton.ac.uk/264882/.
Full textKohlberger, Timo. "Variational domain decomposition for parallel image processing." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=985127996.
Full textWang, Yang. "Distributed parallel processing in networks of workstations." Ohio : Ohio University, 1994. http://www.ohiolink.edu/etd/view.cgi?ohiou1174328416.
Full textChiang, K. (Kuoning). "Parallel processing approach for crash dynamic analysis." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/17917.
Full textGuo, Yan. "Real-time parallel processing for power applications." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41602.
Full textThe Multiprocessor Controller, built around three fixed-point digital signal processors(DSPs), has been used in real-time parallel processing to control a voltage-source type pulse-width-modulated power converter. In a pole-placement control strategy with a state observer, the converter has been stabilized with its dc link capacitance reduced by a factor of as much as 120, thus making the converter a potentially practical device for High Voltage direct current transmission.
The Extensible Modular Multiprocessor System consists of modules which can be easily added in a mesh architecture to provide more computing power. Each module consists of one or two autonomous processing units (PUs) and the supporting control/interface circuits. A prototype of three modules (five floating-point DSPs) has been built and used in parallel processing to simulate a small power system with two turbo-generators operating in real time as a Transient Network Analyzer(TNA).
The power system equations are partitioned by using a new method in which the system is modeled as an interconnection of functional blocks. The power system is simulated by an interconnection of DSP modules, with one module simulating one block. The results of elaborate tests demonstrate the correctness of: (a) the new partitioning method, and (b) the design and operation of the Extensible Modular Multiprocessor System. The results further show that the new partitioning method together with the Extensible Modular Multiprocessor System form a promising approach to digitize the Transient Network Analyzer.
Tremblay, Pierre P. "Parallel processing in intermediate-level computer vision." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56781.
Full textPrager, Richard William. "Parallel processing networks for automatic speech recognition." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238443.
Full textPaw, G. F. "Parallel processing procedures for finite element analysis." Thesis, Swansea University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638432.
Full textHellier, R. L. "Designing numerical algorithms based on parallel processing." Thesis, University of Kent, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375054.
Full textMartinez, Kirk. "Parallel architectures for real-time image processing." Thesis, University of Essex, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238377.
Full textTregidgo, R. W. S. "Parallel processing and automatic postal address recognition." Thesis, University of Essex, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304946.
Full textNAZARETH, RENATO JOSE GONCALVES DE. "INTERCONNECTION ELEMENT FOR A PARALLEL PROCESSING SYSTEM." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1994. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10080@1.
Full textThis work proposes a new structure of interconnection network for the MULTIPLUS, a parallel processing system under development at NCE/UFRJ. The network is fault tolerant, and works with 4 inputs and 4 outputs switches. Initially, some interconnection forms of parallel machines are discussed. Some parallel systems architecture are briefly described with emphasis on MULTIPLUS. Following, some basic concepts of interconnection networks are commented. A family tree of multistage interconnection networks, and a short history of their appearance in the literature, are presented. Some Single Path Networks, wich are related with this dissertation, are briefly described. After a deep introduction of fault tolerance, some fault- tolerant interconnection network are described. A well- structured analysis on fault tolerance gives the basis for the interconnection network proposal. The MULTIPLUS interconnection subsystem is introduced, focusing the messages´ types and structure. Various aspects regarding the proposed network - such as the topology, routing type and algorithm and, mainly, the fault- tolerance mechanism - are discussed. The design of the 4x4 switch is described in details, with emphasis on switch controllers finite state machines, but also including the priority circuit, packet counting circuit, message size compariong circuit. A detailed description of the seitch operation is given. At last, the expectede performance of a 16 inputs and 16 outpus network, where a reading message (12 packets) delay, the packet mean delay, port mean throughput, and overall mean throughput are calculated. The performance of 3 networks - one with minimum size (4x4), other with maximum size (256x256), and another with 16x16 size, each of which implemented with 2x2 and 4x4 switches - are compared. The design results are presented, including the selected EPLDs, apprximated cost of a 256x256 network implemented with the already mentioned EPLDs, and the compiling times of the switch blocks. The switch implementation in VLSI tecnology, as well the multicast communication capability, are proposed as future developments.