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Author: John-von-Neumann-Institut für Computing (Jülich)
Publisher: Forschungszentrum Jülich
ISBN: 3893366067
Category :
Languages : en
Pages : 411
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Author: John-von-Neumann-Institut für Computing (Jülich)
Publisher: Forschungszentrum Jülich
ISBN: 3893366067
Category :
Languages : en
Pages : 411
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Author: K. Binder,
Publisher: Forschungszentrum Jülich
ISBN: 3893369333
Category :
Languages : en
Pages : 453
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Author:
Publisher: Forschungszentrum Jülich
ISBN: 9783893368495
Category :
Languages : en
Pages : 245
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Author: Jeffrey S. Vetter
Publisher: CRC Press
ISBN: 135103684X
Category : Computers
Languages : en
Pages : 434
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Book Description
Contemporary High Performance Computing: From Petascale toward Exascale, Volume 3 focuses on the ecosystems surrounding the world’s leading centers for high performance computing (HPC). It covers many of the important factors involved in each ecosystem: computer architectures, software, applications, facilities, and sponsors. This third volume will be a continuation of the two previous volumes, and will include other HPC ecosystems using the same chapter outline: description of a flagship system, major application workloads, facilities, and sponsors. Features: Describes many prominent, international systems in HPC from 2015 through 2017 including each system’s hardware and software architecture Covers facilities for each system including power and cooling Presents application workloads for each site Discusses historic and projected trends in technology and applications Includes contributions from leading experts Designed for researchers and students in high performance computing, computational science, and related areas, this book provides a valuable guide to the state-of-the art research, trends, and resources in the world of HPC.
Author: John von Neumann-Institut für Computing
Publisher: Forschungszentrum Jülich
ISBN: 3893367586
Category :
Languages : en
Pages : 421
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Author: Valentina Huber
Publisher: Forschungszentrum Jülich
ISBN: 3893369104
Category :
Languages : en
Pages : 107
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Author: Sonja Holl
Publisher: Forschungszentrum Jülich
ISBN: 389336949X
Category :
Languages : en
Pages : 207
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Book Description
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.
Author: Jun Zhang
Publisher: Forschungszentrum Jülich
ISBN: 3893368256
Category :
Languages : en
Pages : 125
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Author: Morris Riedel
Publisher: Forschungszentrum Jülich
ISBN: 3893368612
Category :
Languages : en
Pages : 299
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Author: David Böhme
Publisher: Forschungszentrum Jülich
ISBN: 3893369406
Category :
Languages : en
Pages : 135
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