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Book Synopsis Fast Methods for Long-range Interactions in Complex Systems by : Godehard Sutmann
Download or read book Fast Methods for Long-range Interactions in Complex Systems written by Godehard Sutmann and published by Forschungszentrum Jülich. This book was released on 2011 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-resolution Simulations of Strongly Coupled Coulomb Systems with a Parallel Tree Code by : Mathias Winkel
Download or read book High-resolution Simulations of Strongly Coupled Coulomb Systems with a Parallel Tree Code written by Mathias Winkel and published by Forschungszentrum Jülich. This book was released on 2013 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multiscale Modelling Methods for Applications in Materials Science by : Ivan Kondov
Download or read book Multiscale Modelling Methods for Applications in Materials Science written by Ivan Kondov and published by Forschungszentrum Jülich. This book was released on 2013 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Scientific workflows have emerged as a key technology that assists scientists with the design, management, execution, sharing and reuse of in silico experiments. Workflow management systems simplify the management of scientific workflows by providing graphical interfaces for their development, monitoring and analysis. Nowadays, e-Science combines such workflow management systems with large-scale data and computing resources into complex research infrastructures. For instance, e-Science allows the conveyance of best practice research in collaborations by providing workflow repositories, which facilitate the sharing and reuse of scientific workflows. However, scientists are still faced with different limitations while reusing workflows. One of the most common challenges they meet is the need to select appropriate applications and their individual execution parameters. If scientists do not want to rely on default or experience-based parameters, the best-effort option is to test different workflow set-ups using either trial and error approaches or parameter sweeps. Both methods may be inefficient or time consuming respectively, especially when tuning a large number of parameters. Therefore, scientists require an effective and efficient mechanism that automatically tests different workflow set-ups in an intelligent way and will help them to improve their scientific results. This thesis addresses the limitation described above by defining and implementing an approach for the optimization of scientific workflows. In the course of this work, scientists’ needs are investigated and requirements are formulated resulting in an appropriate optimization concept. In a following step, this concept is prototypically implemented by extending a workflow management system with an optimization framework, including general mechanisms required to conduct workflow optimization. As optimization is an ongoing research topic, different algorithms are provided by pluggable extensions (plugins) that can be loosely coupled with the framework, resulting in a generic and quickly extendable system. In this thesis, an exemplary plugin is introduced which applies a Genetic Algorithm for parameter optimization. In order to accelerate and therefore make workflow optimization feasible at all, e-Science infrastructures are utilized for the parallel execution of scientific workflows. This is empowered by additional extensions enabling the execution of applications and workflows on distributed computing resources. The actual implementation and therewith the general approach of workflow optimization is experimentally verified by four use cases in the life science domain. All workflows were significantly improved, which demonstrates the advantage of the proposed workflow optimization. Finally, a new collaboration-based approach is introduced that harnesses optimization provenance to make optimization faster and more robust in the future.
Book Synopsis Automated Optimization Methods for Scientific Workflows in e-Science Infrastructures by : Sonja Holl
Download or read book Automated Optimization Methods for Scientific Workflows in e-Science Infrastructures written by Sonja Holl and published by Forschungszentrum Jülich. This book was released on 2014 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific workflows have emerged as a key technology that assists scientists with the design, management, execution, sharing and reuse of in silico experiments. Workflow management systems simplify the management of scientific workflows by providing graphical interfaces for their development, monitoring and analysis. Nowadays, e-Science combines such workflow management systems with large-scale data and computing resources into complex research infrastructures. For instance, e-Science allows the conveyance of best practice research in collaborations by providing workflow repositories, which facilitate the sharing and reuse of scientific workflows. However, scientists are still faced with different limitations while reusing workflows. One of the most common challenges they meet is the need to select appropriate applications and their individual execution parameters. If scientists do not want to rely on default or experience-based parameters, the best-effort option is to test different workflow set-ups using either trial and error approaches or parameter sweeps. Both methods may be inefficient or time consuming respectively, especially when tuning a large number of parameters. Therefore, scientists require an effective and efficient mechanism that automatically tests different workflow set-ups in an intelligent way and will help them to improve their scientific results. This thesis addresses the limitation described above by defining and implementing an approach for the optimization of scientific workflows. In the course of this work, scientists’ needs are investigated and requirements are formulated resulting in an appropriate optimization concept. In a following step, this concept is prototypically implemented by extending a workflow management system with an optimization framework, including general mechanisms required to conduct workflow optimization. As optimization is an ongoing research topic, different algorithms are provided by pluggable extensions (plugins) that can be loosely coupled with the framework, resulting in a generic and quickly extendable system. In this thesis, an exemplary plugin is introduced which applies a Genetic Algorithm for parameter optimization. In order to accelerate and therefore make workflow optimization feasible at all, e-Science infrastructures are utilized for the parallel execution of scientific workflows. This is empowered by additional extensions enabling the execution of applications and workflows on distributed computing resources. The actual implementation and therewith the general approach of workflow optimization is experimentally verified by four use cases in the life science domain. All workflows were significantly improved, which demonstrates the advantage of the proposed workflow optimization. Finally, a new collaboration-based approach is introduced that harnesses optimization provenance to make optimization faster and more robust in the future.
Book Synopsis Generalized Algebraic Kernels and Multipole Expansions for Massively Parallel Vortex Particle Methods by : Robert Speck
Download or read book Generalized Algebraic Kernels and Multipole Expansions for Massively Parallel Vortex Particle Methods written by Robert Speck and published by Forschungszentrum Jülich. This book was released on 2011 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis From Computational Biophysics to Systems Biology (CBSB11) – Celebrating Harold Scheraga’s 90th Birthday by : Paolo Carloni
Download or read book From Computational Biophysics to Systems Biology (CBSB11) – Celebrating Harold Scheraga’s 90th Birthday written by Paolo Carloni and published by Forschungszentrum Jülich. This book was released on 2012 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-dimensional Solute Transport Modeling in Coupled Soil and Plant Root Systems by : Natalie Schröder
Download or read book Three-dimensional Solute Transport Modeling in Coupled Soil and Plant Root Systems written by Natalie Schröder and published by Forschungszentrum Jülich. This book was released on 2014-03-21 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis UNICORE Summit 2013 by : Valentina Huber
Download or read book UNICORE Summit 2013 written by Valentina Huber and published by Forschungszentrum Jülich. This book was released on 2013 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pedestrian Fundamental Diagrams by : Jun Zhang
Download or read book Pedestrian Fundamental Diagrams written by Jun Zhang and published by Forschungszentrum Jülich. This book was released on 2012 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterizing Load and Communication Imbalance in Parallel Applications by : David Böhme
Download or read book Characterizing Load and Communication Imbalance in Parallel Applications written by David Böhme and published by Forschungszentrum Jülich. This book was released on 2014-03-28 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: