Software and Hardware for Distributed Systems and Supercomputers

Article # 14_2016

33 p.

PDF

Alexandr Sokolov, Vitaly Schetinin, Arseniy Sapelkin
Strength surface reconstruction using special parallel algorithm based on Intel MIC (Intel Many Integrated Core) architecture

The main objective of this research was to create a parallel software implementation of a numerical method for the reconstruction of strength surface of initial failure of composite material under research. Quadratic tensor polynomial criterion named after Malmeyster-Woo was used. Asymptotic averaging method or homogenization (Nikolay S. Bahvalov, Boris E. Pobedria) and finite element method were used. Software implementation was developed using graph-based technology provided in Distributed computational system GCD using Intel MIC architecture. Computational experiments have been carried out for a series of models of composite materials defined by their reinforcement schemes (“unit cells”) to obtain the slice of
its strength surface. Three types of composites were considered: 3D-reinforced and 1D-reinforced. The results of calculations are presented. (In Russian).

Key words: micromechanics of composite materials, elastic and strength properties, quadratic failure criterion, homogenization, numerical methods for solving inverse problems, high performance computing, distributed systems, finite element method, the method of asymptotic averaging.

article citation

DOI

https://doi.org/10.25209/2079-3316-2016-7-2-3-25

Article # 18_2016

12 p.

PDF

Alexandr Gavrikov, Dmitriy Knyazkov, Alla Romanova, Vitaliy Chernik, Alexey Shamaev
Simulation of influence of the surface disturbance on the ocean self radiation spectrum

A problem of sea surface radiation simulation is considered for the needs
of Earth surface radiotomography. The method of parallel sections for simulation of
diffraction of electromagnetic radiation on a periodical surface layer was implemented as a computer program written on the python programming language with the use of pypar parallel communication library. A number of numerical experiments was performed with the use of this program. A hybrid computational cluster HybriLIT (The Laboratory of Information Technologies at JINR, Dubna, Russia) was used for the computations. (In Russian).

Key words: HPC-computations, ocean radiometry, diffraction, parallel sections method, diffraction on a periodical layer.

article citation

DOI

https://doi.org/10.25209/2079-3316-2016-7-2-73-84

Article # 22_2016

9 p.

PDF

Denis Petrov, Vladimir Mikhelev
Design optimum open pit limits using hybrid computing systems

This article shows possibility of using high-performance hybrid computing
systems for design optimum open pit limits. (In Russian).

Key words: open pit limits, genetic algorithms, hybrid cluster systems, supercomputing modelling.

article citation

DOI

https://doi.org/10.25209/2079-3316-2016-7-2-137-145