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421. "On a numerical method for solving one-dimensional Stefan-type problems"
On a numerical method for solving one-dimensional Stefan-type problems" . Okulov N.A. A finite-difference method for solving one-dimensional one- and two-phase Stefan-type problems with multiple phase boundaries is proposed. The essence of the method is that the problem under study is solved step by step when moving from one time layer to another. ... Keywords: Stefan problem, difference scheme, numerical methods, interphase boundaries . PostScript (in Russian) (1.48MB) . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r130.html -- 2.8 Кб -- 16.05.2011
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422. "Implementation of an automated performance analysis tool for UPC applications"
Implementation of an automated performance analysis tool for UPC applications" . Andreev N.E., Afanasiev K.E. An implementation of a performance analysis tool for applications written in Unified Parallel C is considered. This language belongs to the PGAS programming model being a new parallel programming paradigm. ... Keywords: PGAS, Unified Parallel C, Scalasca, instrumentation, tracing, performance analysis, parallel programming . PostScript (in Russian) (1.46MB) . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r205.html -- 2.9 Кб -- 10.05.2011
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423. "Application of the Quickhull algorithm's principles to the double description
Application of the Quickhull algorithm's principles to the double description method" . Bastrakov S.I., Zolotykh N.Yu. The double description method known also as the Motzkin-Burger algorithm is a method for computing the general solution of a system of linear inequalities. ... The numerical results demonstrate a number of advantages of the proposed modification over the original double description method and (in many cases) over the Quickhull algorithm. ... PostScript (in Russian) (1.51MB) . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r129.html -- 3.1 Кб -- 25.04.2011
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424. "Simulation of gas dynamics with the lattice Boltzmann method"
Simulation of gas dynamics with the lattice Boltzmann method" . Grachev N.E., Dmitriev A.V., Senin D.S. A computer implementation of a method to simulate the motion of a single-phase one-component viscous gas in three dimensions is considered. ... Keywords: gas dynamics, computer simulation, lattice Boltzmann method . PostScript (in Russian) (7.34MB) . ... Grachev N.E. e-mail: grachev@introvision.ru ; Dmitriev A.V. e-mail: dmitriev@introvision.ru ; Senin D.S. e-mail: senin@introvision.ru ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r128.html -- 3.0 Кб -- 25.04.2011
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425. "Empirical reconstruction of a fuzzy model and the reduction of measurements in
Empirical reconstruction of a fuzzy model and the reduction of measurements in Euclidean metric" . Kopit T.A., Chulichkov A.I., Ustinin D.M. In the framework of a fuzzy model being refined by test measurements, experimental data are reduced to a form characteristic for measurements made by an ideal measuring device. A model of a measurement error is formulated in terms of fuzzy constraints imposed on its Euclidean norm. ... PostScript (in Russian) (932KB) . PDF (in Russian) (197KB) . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r127.html -- 3.4 Кб -- 25.04.2011
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426. "Modeling of potential flows with unknown boundaries on the basis of stationary
Modeling of potential flows with unknown boundaries on the basis of stationary discrete vortices" . Averkova O.A., Logachev I.N., Logachev K.I. A method to model the detached flows at the inlet of a suction port in multiply connected regions with cuts (fine visors) is proposed. ... Keywords: detached flow, method of discrete vortices, local drag coefficient . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r126.html -- 3.2 Кб -- 25.04.2011
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427. "Application of high performance computing to the solution of interior
Application of high performance computing to the solution of interior ballistics problems" . Semenov I.V., Utkin P.S., Akhmedyanov I.F., Menshov I.S. A mathematical model, a numerical algorithm, and an approach to its parallelization for the simulation of interior ballistics problems in the quasi-one-dimensional approximation using high performance computing are considered. ... Keywords: interior ballistics, numerical modeling, high performance computing . PostScript (in Russian) (3.43MB) . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r123.html -- 3.4 Кб -- 12.04.2011
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428. "Parallel algorithms for solving SAT-problems in application to optimization
Parallel algorithms for solving SAT-problems in application to optimization problems with Boolean constraints" . Zaikin O.S., Otpuschennikov I.V., Semenov A.A. A parallel technology that can be used to solve various problems of discrete optimization is proposed. ... This technique is usually applied to solve the verification problems for discrete systems. ... Keywords: inversion of discrete functions, satisfiability problem (SAT-problem), Boolean equations, problems of combinatorial optimization . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r125.html -- 3.4 Кб -- 12.04.2011
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429. "On stability of a lattice Boltzmann kinetic scheme for simulating plane flows"
On stability of a lattice Boltzmann kinetic scheme for simulating plane flows" . Krivovichev G.V. The stability problem is considered for a lattice Boltzmann kinetic scheme for simulating the plane flows of a viscous fluid. ... The stability analysis is performed with respect to initial data using the Neumann method in a linear approximation. ... Keywords: kinetic schemes, lattice Boltzmann method, stability with respect to initial data, Neumann method, stability domain . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r124.html -- 2.7 Кб -- 12.04.2011
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430. "On the peculiarities of solving large systems of linear algebraic equations on
On the peculiarities of solving large systems of linear algebraic equations on high performance computing systems of different architecture" . Krasnopol'skii B.I. The results of testing a set of the Krylov subspace iterative methods (CGS, BiCGStab) with algebraic multigrid preconditioner for solving large sparse systems of linear algebraic equations are discussed. ... Keywords: iterative methods, systems of linear algebraic equations, scalability . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r122.html -- 3.0 Кб -- 07.04.2011
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431. "Application of the truncated SPIKE algorithm from the Intel Adaptive
Application of the truncated SPIKE algorithm from the Intel Adaptive SPIKE-Based Solver for solving elastoplastic problems" . Tolmachev A.V., Konovalov A.V., Partin A.S. The performance capabilities of the truncated SPIKE algorithm from the Intel Adaptive SPIKE-Based Solver developed for the parallel solution of linear systems in the case of elastoplastic problems are studied using the cylinder compression problem as a model one. ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r121.html -- 3.0 Кб -- 05.04.2011
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432. "Application of HPC-technologies to solving spatial multiphysics problems"
Application of HPC-technologies to solving spatial multiphysics problems" . ... Yuskin A.V. The MCF software package devoted to solving coupled problems of hydroelasticity is described. Various ways of solving the problems with strong and weak coupling are considered. ... PostScript (in Russian) (44.1MB) . ... Vasiljev V.A. e-mail: vasilyev_va@list.ru ; Nitzkiy A.Yu. e-mail: nitskiy@list.ru ; . Kraposhin M.V. e-mail: os-cfd@yandex.ru ; Yuskin A.V. e-mail: os-cfd@yandex.ru ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r120.html -- 3.4 Кб -- 30.03.2011
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433. "Dynamically generated parallel environments in grid-polygons: problems and
Dynamically generated parallel environments in grid-polygons: problems and solutions" . Volokhov V.M., Varlamov L.A., Pivushkov A.V., Surkov N.F., Volokhov A.V. This paper is devoted to the problems of implementation of complicated configured parallel application packages in distributed environments and to the description of some ways to resolve such problems. ... Keywords: distributed computing, quantum and computational chemistry, GRID, MPI, virtualization, GAMESS-US . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r204.html -- 3.6 Кб -- 25.03.2011
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434. "On an algorithmic feasibility of source conditions in iterative methods of
On an algorithmic feasibility of source conditions in iterative methods of solving irregular nonlinear equations" . ... A relation between an algorithmic feasibility of source conditions in iterative methods for solving irregular nonlinear problems and the "P=NP?" problem is established. ... Keywords: irregular equation, iterative method, source condition, complexity, polynomial algorithm . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r118.html -- 2.7 Кб -- 25.03.2011
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435. "Modeling of electron transport in matter with the use of hybrid...
Modeling of electron transport in matter with the use of hybrid supercomputers" . Zhukovskiy M.E., Podoliako S.V., Uskov R.V. Distributions of electron characteristics for modeling their transport in matter are obtained with the use of cross-section data on elastic and inelastic processes. ... Statistical algorithms for modeling of electron transport are proposed to perform numerical experiments on hybrid supercomputers. ... PostScript (in Russian) (2.93MB) . PDF (in Russian) (536KB) . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r119.html -- 3.4 Кб -- 24.03.2011
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436. "Application of the global optimization index method to solving inverse
Application of the global optimization index method to solving inverse problems of chemical kinetics" . ... In order to study the mechanisms of complex chemical reactions of metal-complex catalysis and to determine their kinetic parameters, it is proposed to use the parallel index method of global optimization. ... Keywords: chemical kinetics, inverse problem, carboalumination, global optimization, rotated evolvements, black-box optimization, mixed strategy, parallel algorithms . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r117.html -- 3.5 Кб -- 22.03.2011
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437. "A parallel algorithm for numerical solution of three-dimensional Maxwell's
A parallel algorithm for numerical solution of three-dimensional Maxwell's equations with discontinuous dielectric permittivity on prismatic meshes" . Ismagilov T.Z., Gorbachev A.I. A finite-volume method for numerical solution of three-dimensional Maxwell's equations with discontinuous dielectric permittivity on prismatic meshes is proposed. ... Keywords: Maxwell's equations, finite-volume method, prismatic mesh, Godunov's scheme, discontinuous dielectric permittivity . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r116.html -- 3.3 Кб -- 21.03.2011
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438. "A parallel SSOR preconditioner for solving the problems of electromagnetism in
A parallel SSOR preconditioner for solving the problems of electromagnetism in frequency domains" . ... This preconditioner is used for the iterative solving of linear systems resulting from the approximation of the corresponding variational problems of electromagnetism. ... The numerical results obtained confirm a high level of performance and scalability of the proposed algorithms. Keywords: preconditioners, parallel algorithms, domain decomposition, NUMA-architectures . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r115.html -- 3.1 Кб -- 21.03.2011
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439. "Parallel processes at the stages of petaflops modeling"
Parallel processes at the stages of petaflops modeling" . Il'in V.P., Knysh D.V. Two-level iterative Krylov's conjugate direction methods are proposed for the traces of solutions on the internal boundaries of subdomains in the case of spatial decomposition of multidimensional boundary value problems. The global iterative process consists in solving the Poincare-Steklov equation with overlapping and without overlapping of subdomains. ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r114.html -- 3.5 Кб -- 17.03.2011
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440. "Parallel processes at the stages of petaflops modeling"
Parallel processes at the stages of petaflops modeling" . ... The main tools are the domain decomposition and the mapping of algorithms onto the multiprocessor computer architecture. ... Keywords: parallelization of algorithms, mathematical modeling, technological stages, domain decomposition, multiprocessor and multicore supercomputers, large-scale problems . PostScript (in Russian) (892KB) . PDF (in Russian) (223KB) . PostScript. zip (in Russian) (375kB) . ...
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Ссылки http://num-meth.srcc.msu.ru/english/zhurnal/tom_2011/v12r113.html -- 3.0 Кб -- 17.03.2011
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