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2nd International Workshop on Information, Computation, and control systems for Distributed Environments, ICCS-DE 2020

作者： Feoktistov, A.G. Basharina, O.Yu. Matrosov Institute for System Dynamics and Control Theory of SB RAS Lermontov St. 134 Irkutsk664033 Russia Irkutsk State University Karl Marx St. 1 Irkutsk664003 Russia

The paper addresses a relevant problem of predicting the runtime of jobs for executing problem-solving schemes of large-scale applications in a heterogeneous distributed computing environment. Such an environment includes nodes that have various hardware architectures, different system software, and diverse computational possibilities. We believe that increasing the accuracy in predicting the runtime of jobs can significantly improve the efficiency of problem-solving and rational use of resources in the heterogeneous environment. To this end, we propose new models that make it possible to take into account various estimations of the module runtime for all modules included in the problem-solving scheme. These models were developed using the special computational model of distributed applied software packages (large-scale scientific applications). In addition, we compare the prediction results (jobs runtime and their errors) using different estimations. Among them are the estimations obtained through the modules testing, user's estimations, and estimations based on computational history. These results were obtained in continuous integration, delivery, and deployment of applied and system software of a package for solving warehouse logistics problems. They show that the largest accuracy is achieved by the modules testing. Copyright © 2020 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Forecasting

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On one approach to solving the problem of optimal control on the basis of the method of perturbations

On one approach to solving the problem of optimal control on...

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2004 IFAC Workshop on Generalized Solutions in control Problems, GSCP 2004

作者： Buldaev, A.S. Ulan-Ude Filiation from Institute for System Dynamics and Control Theory of Siberian Branch of RAS Russia

An iteration method for finding the control, which satisfies the necessary optimality condition, in the main problem of optimal control is proposed. This method has been applied for solving a system of functional equations in the space of controls, which is constructed on the basis of the necessary optimality condition with the use of the operation of projection on the set of admissible values of control. In order to ground the method, elements of the theory of perturbations have been applied. Copyright © IFAC GENERALIZED SOLUTIONS IN control PROBLEMS. 2004.

关键词： Optimal control systems

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Mixing of fermions and spectral representation of propagator 22

Mixing of fermions and spectral representation of propagator

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22nd International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quantum Chromodynamics", Baldin ISHEPP 2014

作者： Kaloshin, A.E. Lomov, V.P. Irkutsk State University Irkutsk Russia Institute for System Dynamics and Control Theory RAS Irkutsk Russia

We develop the spectral representation of propagator for n mixing fermion fields in case of Pparity violation. Solving of the eigenstate problem for inverse matrix propagator allows to build the system of orthogonal projectors and to represent the matrix propagator as a sum of poles with positive and negative energy. The procedure of multiplicative renormalization is investigated, the renormalization matrices are obtained in a closed form without using of pertubation theory. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

关键词： Matrix algebra

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Orthogonality-based classification of diagonal Latin squares of order 10 8

Orthogonality-based classification of diagonal Latin squares...

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

作者： Vatutin, Eduard Titov, Vitaly Zaikin, Oleg Kochemazov, Stepan Manzuk, Maxim Nikitina, Natalia Southwest State University Kursk Russia Matrosov Institute for System Dynamics and Control Theory SB RAS Irkutsk Russia BOINC.ru Moscow Russia Institute of Applied Mathematical Research KRCRAS Petrozavodsk Russia

The article describes combinatorial structures based on diagonal Latin squares (DLS) of order 10 and the orthogonality condition between pairs of such squares. These structures are novel and interesting in the context of the well-known open problem aimed at finding a triple of mutually orthogonal DLSs of order 10. The structures were found in the BOINC-based volunteer computing projects SAT@home and Gerasim@home. © 2018 Eduard Vatutin, Vitaly Titov, Oleg Zaikin, Stepan Kochemazov, Maxim Manzuk, Natalia Nikitina.

关键词： Combinatorial mathematics

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Constructing the crude program control of the operating process of the oribiting telescope 14

Constructing the crude program control of the operating proc...

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14th Saint Petersburg International Conference on Integrated Navigation systems, ICINS 2007

作者： Druzhinin, E.I. Voronov, V.A. Institute of System Dynamics and Control Theory SB RAS 134 Lermontov St. Irkutsk Russia

ISBN: (纸本)9785900780672

We consider a construction program control problem for orbital telescope under restrictions and parameters and structure uncertainty of its dynamic model. The calculation of needed control is based on stable to input data small errors direct technique of approximate solutions construction of route problems for controllable nonlinear systems. The modified variant of iteration algorithm calculation realization for direct technique has the structure that enables to rebuild algorithm on each calculation step by previous iteration results. Such algorithm construction enables to compute program controls for wide spectra of input data under problem statement with minimal step number. By numerical research we show that "direct" control obtained with a help stable in Tichonov sense direct technique computational algorithm for orbital telescope model as a single solid provides needed accuracy of motion realization for telescope model with non-rigid solar batteries panels and perturbed dynamical characteristics.

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On an exact solution to the nonlinear heat equation with a source

On an exact solution to the nonlinear heat equation with a s...

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2020 Dynamic systems and Computer Science: theory and Applications, DYSC 2020

作者： Kazakov, A.L. Lempert, A.A. Spevak, L.F. Matrosov Institute for System Dynamics and Control Theory SB RAS 134 Lermontov Str. Irkutsk664033 Russia Institute of Engineering Science UB RAS 34 Komsomolskaya str. Ekaterinburg620049 Russia

The paper is devoted to the study of a singular nonlinear second-order parabolic equation, which is called the porous medium equation or the nonlinear heat equation. One of the important classes of its solutions is heat waves propagating over a zero background with a finite velocity. This property is not typical for parabolic equations and is a consequence of singularity. The main object of study is exact solutions of mentioned type. A new way of separating variables is used to represent them. We obtain conditions when it is possible to make a reduction to the Cauchy problem for an ordinary second-order differential equation with a singularity. It is shown that the Cauchy problemdescribes a heat wave whose front moves exponentially. We construct a solution to the Cauchy problem as a power series and determine the cases when the series breaks off, i.e. the solution has the form of a polynomial, and the corresponding heat wave can be written explicitly. If the Cauchy problem cannot be explicitly integrated, the solution is constructed numerically. An algorithm based on the boundary element method is proposed. We perform a computational experiment and conclude the properties of the found solutions. Besides, the accuracy of the calculation results is analyzed. © Published under licence by IOP Publishing Ltd.

关键词： Polynomials

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Approximate solution to the resource consumption minimization problem. II. Estimates for the proximity of controls

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Journal of Applied and Industrial Mathematics 2012年第2期6卷 135-144页

作者： Aleksandrov, V.M. Dykhta, V.A. Sobolev Institute of Mathematics pr. Akad. Koptyuga 5 Novosibirsk 630090 Russia Institute of System Dynamics and Control Theory ul. Lermontova 134 Irkutsk 664033 Russia

The proximity is estimated of a resource quasioptimal control to the optimal control. We give a method for subdividing the bounded region of initial conditions into subregions and bringing the quasioptimal control clo... 详细信息

关键词： Linear systems

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On the theory of realization of strong differential models. I

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Journal of Applied and Industrial Mathematics 2007年第3期1卷 273-282页

作者： Daneev, A.V. Lakeev, A.V. Rusanov, V.A. Rusanov, M.V. Institute of System Dynamics and Control Theory Russian Academy of Sciences Irkutsk 664033 pr. Lermontova 134 Russian Federation

The topological-algebraic characteristics of ordinary and distributed linear differential extensions are studied, and a qualitative analysis is carried out of the existence of strong differential (A, B)-models realized over the sets of observed dynamical processes (by families of the pairs trajectory-control) that admit an a posteriori extension. © Pleiades Publishing, Ltd. 2007.

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On the theory of realization of strong differential models. II

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Journal of Applied and Industrial Mathematics 2007年第3期1卷 283-292页

作者： Daneev, A.V. Lakeev, A.V. Rusanov, V.A. Institute of System Dynamics and Control Theory Russian Academy of Sciences Irkutsk 664033 pr. Lermontova 134 Russian Federation

The categories of the vocabulary of the a posteriori mathematical modeling of dynamical systems are formalized which enable us to apply the conventional approach to studying the existence of strong irrefutable (A, B)-models by formulating some assertions about such properties with a unified system of notions and terms. © Pleiades Publishing, Ltd. 2007.

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Distributed data storage for modern astroparticle physics experiments 3

Distributed data storage for modern astroparticle physics ex...

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3rd International Workshop on Data Life Cycle in Physics, DLC 2019

作者： Kryukov, Alexander Nguyen, Minh-Duc Bychkov, Igor Mikhailov, Andrey Shigarov, Alexey Dubenskaya, Julia Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University Moscow119992 Russia Matrosov Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Lermontov st. 134 Irkutsk Russia

The German-Russian Astroparticle Data Life Cycle Initiative is an international project launched in 2018. The Initiative aims to develop technologies that provide a unified approach to data management, as well as to demonstrate their applicability on the example of two large astrophysical experiments - KASCADE and TAIGA. One of the key points of the project is the development of a distributed storage, which, on the one hand, will allow data of several experiments to be combined into a single repository with unified interface, and on the other hand, will provide data to all participants of experimental groups for multi-messenger analysis. Our approach to storage design is based on the single write-multiple read (SWMR) model for accessing raw or centrally processed data for further analysis. The main feature of the distributed storage is the ability to extract data either as a collection of files or as aggregated events from different sources. In the last case the storage provides users with a special service that aggregates data from different storages into a single sample. Thanks to this feature, multi-messenger methods used for more sophisticated data exploration can be applied. Users can use both Web-interface and Application Programming Interface (API) for accessing the storage. In this paper we describe the architecture of a distributed data storage for astroparticle physics and discuss the current status of our work. © 2019 CEUR-WS. All rights reserved.

关键词： Information management

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