The proceedings contain 33 papers. The topics discussed include: on numerical solution of integral equations for three-dimensional diffraction problems;discrete models of physicochemical processes and their parallel i...
ISBN:
(纸本)3642148212
The proceedings contain 33 papers. The topics discussed include: on numerical solution of integral equations for three-dimensional diffraction problems;discrete models of physicochemical processes and their parallel implementation;a fast general parser for automatic code generation;a compound scheduling strategy for irregular array redistribution in cluster based parallel system;metacluster system for managing the HPC integrated environment;a message forward tool for integration of clusters of clusters based on MPI architecture;dynamic resource provisioning for interactive workflow applications on cloud computing platform;a Xen-based paravirtualization system toward efficient high performance computing environments;a scalable multi-attribute range query approach on cluster-based hybrid overlays;a dynamic file maintenance scheme with Bayesian network for data grids;and using molecular dynamics simulation andparallel computing technique of the deposition of diamond-like carbon thin films.
Organization of high performance execution of fragmented programs met the problem of choice of acceptable way of their execution. The possibilities of execution optimization on the stages of fragmented program develop...
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ISBN:
(纸本)9783642148217
Organization of high performance execution of fragmented programs met the problem of choice of acceptable way of their execution. The possibilities of execution optimization on the stages of fragmented program development, compilation and execution are considered. The methods and algorithms of optimizations are suggested to be included both in fragmented programming language and in run-time system.
Discrete simulation method of physicochemical kinetic processes is proposed and investigated. The method is based on formal representation of classical Von-Neumann's Cellular Automaton (CA) extension, which allow ...
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ISBN:
(纸本)9783642148217
Discrete simulation method of physicochemical kinetic processes is proposed and investigated. The method is based on formal representation of classical Von-Neumann's Cellular Automaton (CA) extension, which allow all kind of discrete alphabets, probabilistic transition functions, and asynchronous mode of operation. Some techniques for simple CA composition are given for simulating complex processes. Transformation of asynchronous CA into block-synchronous type is used to provide high efficiency of parallel implementation.
parallelization of Marchuk's method for solution of inverse problems based on adjoint equations and dual representation of contaminant concentration functional is considered here. There are N individual adjoint eq...
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ISBN:
(纸本)9783642148217
parallelization of Marchuk's method for solution of inverse problems based on adjoint equations and dual representation of contaminant concentration functional is considered here. There are N individual adjoint equations independently solved at each time step. Such conditions of numerical investigation allow application of high performance computations. For this purpose the following ways of parallelization are used: geometrical decomposition, functional decomposition and combination of geometrical and functional decompositions.
The task of the calculation of the dipole-dipole interaction between cobalt nanodot and magnetic tip was formalized and the computing algorithm was implemented in parallel C++ code with using of the MPI standard. The ...
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ISBN:
(纸本)9783642148217
The task of the calculation of the dipole-dipole interaction between cobalt nanodot and magnetic tip was formalized and the computing algorithm was implemented in parallel C++ code with using of the MPI standard. The parallelization is fulfilled by means of the dividing total cycle and the passing the part of cycle in one process. Our parallel program allows obtain Magnetic-Force-Microscopy (MFM) images and to establish the magnetic configuration which one correspond given experimental MFM picture.
The paper describes investigations of some aspects of creating stochastic wave models of dynamic acoustic noise. The problem about sound radiation by homogeneous and stationary pressure fluctuations on a surface of la...
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ISBN:
(纸本)9783642148217
The paper describes investigations of some aspects of creating stochastic wave models of dynamic acoustic noise. The problem about sound radiation by homogeneous and stationary pressure fluctuations on a surface of layered waveguide is considered. The method of statistical modeling based on the randomization of spectral density of surface sources is used. It allows calculating random realizations of sound pressure and particle velocity that are exact solution of the equations of linear acoustics. The software for calculation of statistical characteristics of surface noise in a distributed computing environment is developed. Some examples of its applications are given.
In this paper, we present a fast scalable method to reduce the computation time of genetic algorithms for traveling salesman problem, called the parallel Pattern Reduction Enhanced Genetic Algorithm (PPREGA). The gene...
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ISBN:
(纸本)9783642148217
In this paper, we present a fast scalable method to reduce the computation time of genetic algorithms for traveling salesman problem, called the parallel Pattern Reduction Enhanced Genetic Algorithm (PPREGA). The general idea behind the proposed algorithm is twofold: (1) Eliminate the redundant computations of GA on its convergence process by pattern reduction and (2) Minimize the completion time of GA by parallel computing. Our simulation result shows that the proposed algorithm can significantly reduce not only the computation time but also the maximum completion time of GA. Moreover, our simulation result shows further that the loss of the quality of the end result is small.
This paper deals with the parallelization of free-surface three-dimensional oceanographic model. The model is based on full nonlinear "primitive" equations of the ocean. Generalized vertical coordinate syste...
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ISBN:
(纸本)9783642148217
This paper deals with the parallelization of free-surface three-dimensional oceanographic model. The model is based on full nonlinear "primitive" equations of the ocean. Generalized vertical coordinate system is applied for better resolution of main features of the simulated basin. The numerical model is conservative. Numerical integration procedure is based on time-splitting method with Robert-Asselin filtering. Numerical model code is implemented for running on cluster computers. The parallelization is achieved using domain decomposition method and standard MPI to ensure portability of the code.
parallel implementation of the algorithm of numerical solution of the Navier-Stokes equations for large eddy simulation (LES) of turbulence is presented in this research. The Smagorinsky model has been applied for sub...
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ISBN:
(纸本)9783642148217
parallel implementation of the algorithm of numerical solution of the Navier-Stokes equations for large eddy simulation (LES) of turbulence is presented in this research. The Smagorinsky model has been applied for sub-grid simulation of turbulence. This model with numerical Van Leer's scheme for advection terms is in good agreement with experimental data. Various ways of geometrical decomposition for the parallel numerical solution of the transport equations have been investigated. A theoretical analysis of the parallel algorithms effectiveness was performed and the recommendations for their application were developed. The parallel realization of the iteration methods for the numerical solution of the Poisson equation for velocity and pressure coupling are discussed. Special techniques such as the order of nested loops and the effect of cash memory have been applied to increase the performance of the developed parallel programs.
Many important scientific and engineering problems require the computation of a small number of eigenvalues of large nonsymmetric matrices. The biorthogonal Lanczos method is one of the methods to solve that problem. ...
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ISBN:
(纸本)9783642148217
Many important scientific and engineering problems require the computation of a small number of eigenvalues of large nonsymmetric matrices. The biorthogonal Lanczos method is one of the methods to solve that problem. In this paper, we introduce the s-step biorthogonal Lanczos method generating reduction matrices which are similar to reduction matrices generated by the standard biorthogonal Lanczos method. The s-step generalization of biorthogonal Lanczos method enhances parallel properties by forming s simultaneous search direction vectors. The s-step biorthogonal Lanczos method has the minimized synchronization points, which resulted in the minimized global communication compared to the standard biorthogonal Lanczos method.
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