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Virtual testbed as a case for big data 8

Virtual testbed as a case for big data

引用

Selected Papers of the 8th International Conference "Distributed Computing and Grid-Technologies in Science and Education", GRID 2018

作者： Degtyarev, A.B. Bogdanov, A.V. Korkhov, V.V. Gankevich, I.G. Pylnev, Yu.V. Eibozhenko, A.V. Department of Computer Modeling and Multiprocessing Systems St. Petersburg State University 7/9 Universitetskaya Nab. St. Petersburg199034 Russia Engineering Company NEOTECH MARINE 23 Zastavskaya Str. St. Petersburg196084 Russia

Complex modeling of the behavior of marine objects under the influence of real external excitation is the most important problem At present, the accuracy of direct simulation of phenomena with knovvn physics is comparable to the accuracy of the results obtained during the model experiment in towing tanks. Particularly relevant is the creation of such marine virtual testbed for full-featured simulators and when testing the knowledge base of onboard intelligent systems. Such integrated environment is a complex information object that combines the features of both the enterprise system and the high-performance modeling tool. Integrated environment based on these basic principles is designed to solve in real time the following problems: 1. Collection and analysis of information on the current state of dynamic object (DO) and the environment, remote monitoring of the state of objects. 2. Evaluation and coordination of joint actions of DOs, proceeding from current conditions, with the aim of optimally common problem solving. 3. Centralized support for decision-making by operators of DO control in non-standard situations, organization of information support for the interaction of decisionmakers in the conduct of ongoing operations. 4. computer modeling of possible scenarios of situation development with the aim of selecting the optimal control strategy. 5. Centralized control of technical means. 6. Cataloging and accumulation of information in dynamic databases. Modern architecture of computer systems (especially GP GPU) allows direct full-featured simulation of a marine object in real time. Efficient mapping to a hybrid architecture allows even the ability to render ahead of time under various scenarios. The report discusses general concept of high-performance virtual testbed development and the experience of creating on their basis full-featured simulators. © 2018 AlexandrB. Degtyarev, Alexander V. Bogdanov, Vladimir V. Korkhov, Ivan G. Gankevich, Yury V. Pylnev, Anatoly

关键词： Decision making

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High order aberration correction

High order aberration correction

引用

10th European Particle Accelerator Conference, EPAC 2006

作者： Andrianov, Serge Chechenin, Alexey Department Computer Modeling and Multiprocessing Systems St. Petersburg State University 35 University Avenue 198504 St.-Petersburg Russia Forschungszentrum Juelich Germany

ISBN: (纸本)9290832789

It is known that modern accelerators fall under nonlinear aberrations influence. The most of these aberrations have harmful character, and their effect must be maximally decreased. There are a set of approaches and codes to solving this problem. In this paper, we consider an approach for solving this problem using the matrix formalism for Lie algebraic tools. This formalism allows reducing the starting problem to linear algebraic equations for aberration coefficients, which are elements of corresponding matrices. There are discussed results evaluated using suggested approach and nonlinear programming tools. Some examples of corresponding results are given.

关键词： Nonlinear programming

来源：评论

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Normal form for beam physics in matrix representation

Normal form for beam physics in matrix representation

引用

10th European Particle Accelerator Conference, EPAC 2006

作者： Andrianov, Serge Chechenin, Alexey Department of Computer Modeling and Multiprocessing Systems St. Petersburg State University 35 University avenue 198504 St.-Petersburg Russia Forschungszentrum Juelich Germany

ISBN: (纸本)9290832789

The modeling of long beam evolution dynamics in nonlinear accelerator structures has raised new interest in the effective methods of nonlinear effects calculation. Moreover, it is preferably to use both analytical tools and numerical methods for evolution modeling. Usually the standard numerical methods and computer codes are based on the concept of symplectic transfer maps, whereas the analytical tool is the theory of normal forms. The method of normal forms can be realized in symbolic and numerical modes easily enough. In this paper, we discuss the normal form theory based on the matrix formalism for Lie algebraic tools. This approach allows using well known methods of matrix algebra. This permits to compute necessary matrices step-by-step up to desired order of approximation. This procedure leads to more simple structure of matrix representation for very complicated structure of this map does not allow using this map for practical computing. Therefore, it is necessary to transform this map in more appropriate form. In another words the new matrix representation for the map is particularly simple and has explicit invariants and symmetries. Some examples of corresponding results are given.

关键词： Numerical methods

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Some approaches to long time beam evolution

Some approaches to long time beam evolution

引用

2005 International Conference on Physics and Control, PhysCon 2005

作者： Andrianov, Serge N. Computer Modeling and Multiprocessing Systems Department St.-Petersburg State University 35 University avenue 198504 St.-Petersburg Russia

Some problems of long-time evolution of particle beam are considered. It Is known that most of real physical effects are very sensitive to properties of numerical Integration methods used for beam evolution Investigation. That Is why a researcher should guarantee not only accuracy of any computing but qualitative properties, which are Inherent In the system under study. In this paper some variant of geometrical Integration methods Is discussed. It allows to apply high performance computing systems more effectively. Some practical problems of particle beam evolution are considered.

关键词： Particle beams

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Some approaches to long time beam evolution

Some approaches to long time beam evolution

引用

International Conference on Physics and Control

作者： S.N. Andrianov Head of Computer Modeling and Multiprocessing Systems Department Saint Petersburg State University Saint Petersburg Russia

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