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A user-centric perspective on parallel programming with focus on openMPSuess, Michael. Unknown Date (has links) (PDF)
Kassel, University, Diss., 2007.
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Parallele Genetische Algorithmen mit Anwendungen / Parallel Genetic Algorithms with ApplicationsRiedel, Marion 18 November 2002 (has links) (PDF)
The diploma thesis with the subject ¨Parallel Genetic Algorithms with Applications¨ deals with the parallelization of Genetic Algorithms for the creation of efficient optimization methods especially for simulation based application problems. First, an introduction to Genetic Algorithms and an overview of possible parallelization approaches as well as already published results of research are given. This is followed by a detailed explanation of the conception and realization of own Parallel Genetic Algorithms. The paper is rounded off by an particularized description of the results of extensive test runs on the Chemnitzer Linux-Cluster (CLiC). / Die Diplomarbeit zum Thema ¨Parallele Genetische Algorithmen mit Anwendungen¨ befasst sich mit der Parallelisierung Genetischer Algorithmen zur Erzeugung effizienter Optimierungsverfahren für insbesondere simulationsbasierte Anwendungsprobleme. Zunächst werden eine Einführung in Genetische Algorithmen sowie ein Überblick über mögliche Parallelisierungsansätze und bereits veröffentlichte Forschungsergebnisse gegeben. Dem schließt sich eine detaillierte Erläuterung der Konzeption und Umsetzung eigener Paralleler Genetischer Algorithmen an. Abgerundet wird die Arbeit durch eine ausführliche Darstellung der Ergebnisse umfangreicher Testläufe auf dem Chemnitzer Linux-Cluster (CLiC).
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Bibliotheken zur Entwicklung paralleler Algorithmen - Basisroutinen für Kommunikation und GrafikPester, Matthias 04 April 2006 (has links) (PDF)
The purpose of this paper is to supply a summary of
library subroutines and functions for parallel MIMD
computers. The subroutines have been developed and
continously extended at the University of Chemnitz
since the end of the eighties. In detail, they are
concerned with vector operations, inter-processor
communication and simple graphic output to
workstations. One of the most valuable features is
the machine-independence of the communication
subroutines proposed in this paper for a hypercube
topology of the parallel processors (excepting a
kernel of only two primitive system-dependend
operations). They were implemented and tested for
different hardware and operating systems including
PARIX for transputers and PowerPC, nCube, PVM, MPI.
The vector subroutines are optimized by the use
of C language and unrolled loops (BLAS1-like).
Hardware-optimized BLAS1 routines may be
integrated. The paper includes hints for
programmers how to use the libraries with both
Fortran and C programs.
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Visualization Tools for 2D and 3D Finite Element Programs - User's ManualPester, Matthias 04 April 2006 (has links) (PDF)
This paper deals with the visualization of
numerical results as a very convenient method to
understand and evaluate a solution which has been
calculated as a set of millions of numerical values.
One of the central research fields of the Chemnitz
SFB 393 is the analysis of parallel numerical
algorithms for large systems of linear equations
arising from differential equations (e.g. in solid
and fluid mechanics). Solving large problems on
massively parallel computers makes it more and
more impossible to store numerical data from the
distributed memory of the parallel computer to
the disk for later postprocessing. However, the
developer of algorithms is interested in an
on-line response of his algorithms. Both visual
and numerical response of the running program may
be evaluated by the user for a decision how to
switch or adjust interactively certain parameters
that may influence the solution process.
The paper gives a survey of current programmer
and user interfaces that are used in our various
2D and 3D parallel finite element programs for
the visualization of the solution.
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Parallele Genetische Algorithmen mit AnwendungenRiedel, Marion. January 2002 (has links)
Chemnitz, Techn. Univ., Diplomarb., 2002.
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Task Pool Teams for Implementing Irregular Algorithms on Clusters of SMPsHippold, Judith, Rünger, Gudula 06 April 2006 (has links) (PDF)
The characteristics of irregular algorithms make a parallel implementation difficult, especially for PC clusters or clusters of SMPs. These characteristics may include an unpredictable access behavior to dynamically changing data structures or strong irregular coupling of computations. Problems are an unknown load distribution and expensive irregular communication patterns for data accesses and redistributions. Thus the parallel implementation of irregular algorithms on distributed memory machines and clusters requires a special organizational mechanism for a dynamic load balance while keeping the communication and administration overhead low. We propose task pool teams for implementing irregular algorithms on clusters of PCs or SMPs. A task pool team combines multithreaded programming using task pools on single nodes with explicit message passing between different nodes. The dynamic load balance mechanism of task pools is generalized to a dynamic load balance scheme for all distributed nodes. We have implemented and compared several versions for task pool teams. As application example, we use the hierarchical radiosity algorithm, which is based on dynamically growing quadtree data structures annotated by varying interaction lists expressing the irregular coupling between the quadtrees. Experiments are performed on a PC cluster and a cluster of SMPs.
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Frame-basierte Wissensrepräsentation zur Konfigurierung, Analyse und Diagnose technischer SystemeHotz, Lothar January 2008 (has links)
Zugl.: Hamburg, Univ., Diss., 2008
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Bibliotheken zur Entwicklung paralleler Algorithmen - Basisroutinen für Kommunikation und GrafikPester, Matthias 04 April 2006 (has links)
The purpose of this paper is to supply a summary of
library subroutines and functions for parallel MIMD
computers. The subroutines have been developed and
continously extended at the University of Chemnitz
since the end of the eighties. In detail, they are
concerned with vector operations, inter-processor
communication and simple graphic output to
workstations. One of the most valuable features is
the machine-independence of the communication
subroutines proposed in this paper for a hypercube
topology of the parallel processors (excepting a
kernel of only two primitive system-dependend
operations). They were implemented and tested for
different hardware and operating systems including
PARIX for transputers and PowerPC, nCube, PVM, MPI.
The vector subroutines are optimized by the use
of C language and unrolled loops (BLAS1-like).
Hardware-optimized BLAS1 routines may be
integrated. The paper includes hints for
programmers how to use the libraries with both
Fortran and C programs.
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Parallele Genetische Algorithmen mit AnwendungenRiedel, Marion 25 October 2002 (has links)
The diploma thesis with the subject ¨Parallel Genetic Algorithms with Applications¨ deals with the parallelization of Genetic Algorithms for the creation of efficient optimization methods especially for simulation based application problems. First, an introduction to Genetic Algorithms and an overview of possible parallelization approaches as well as already published results of research are given. This is followed by a detailed explanation of the conception and realization of own Parallel Genetic Algorithms. The paper is rounded off by an particularized description of the results of extensive test runs on the Chemnitzer Linux-Cluster (CLiC). / Die Diplomarbeit zum Thema ¨Parallele Genetische Algorithmen mit Anwendungen¨ befasst sich mit der Parallelisierung Genetischer Algorithmen zur Erzeugung effizienter Optimierungsverfahren für insbesondere simulationsbasierte Anwendungsprobleme. Zunächst werden eine Einführung in Genetische Algorithmen sowie ein Überblick über mögliche Parallelisierungsansätze und bereits veröffentlichte Forschungsergebnisse gegeben. Dem schließt sich eine detaillierte Erläuterung der Konzeption und Umsetzung eigener Paralleler Genetischer Algorithmen an. Abgerundet wird die Arbeit durch eine ausführliche Darstellung der Ergebnisse umfangreicher Testläufe auf dem Chemnitzer Linux-Cluster (CLiC).
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Visualization Tools for 2D and 3D Finite Element Programs - User's ManualPester, Matthias 04 April 2006 (has links)
This paper deals with the visualization of
numerical results as a very convenient method to
understand and evaluate a solution which has been
calculated as a set of millions of numerical values.
One of the central research fields of the Chemnitz
SFB 393 is the analysis of parallel numerical
algorithms for large systems of linear equations
arising from differential equations (e.g. in solid
and fluid mechanics). Solving large problems on
massively parallel computers makes it more and
more impossible to store numerical data from the
distributed memory of the parallel computer to
the disk for later postprocessing. However, the
developer of algorithms is interested in an
on-line response of his algorithms. Both visual
and numerical response of the running program may
be evaluated by the user for a decision how to
switch or adjust interactively certain parameters
that may influence the solution process.
The paper gives a survey of current programmer
and user interfaces that are used in our various
2D and 3D parallel finite element programs for
the visualization of the solution.
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