| Texto completo | |
| Autor(es): |
Fazanaro, Filipe I.
[1, 2]
;
Soriano, Diogo C.
[1]
;
Suyama, Ricardo
[1]
;
Madrid, Marconi K.
[3]
;
de Oliveira, Jose Raimundo
[2]
;
Bravo Munoz, Ignacio
[4]
;
Attux, Romis
[2]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Fed Abc, Ctr Engn Modelagem & Ciencias Sociais Aplicadas, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil
[2] Univ Estadual Campinas, Dept Comp Engn & Ind Automat DCA, Sch Elect & Comp Engn FEEC, Ave Albert Einstein 400, Cidade Univ Zeferino Vaz, BR-13083852 Sao Paulo - Brazil
[3] Univ Estadual Campinas, DSE, Sch Elect & Comp Engn FEEC, Ave Albert Einstein 400, Cidade Univ Zeferino Vaz, BR-13083852 Sao Paulo - Brazil
[4] Univ Alcala UAH, Dept Elect DEPECA, Carretera Madrid Barcelona Km 33-600, Madrid 28871 - Spain
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo de Revisão |
| Fonte: | COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION; v. 37, p. 143-162, AUG 2016. |
| Citações Web of Science: | 2 |
| Resumo | |
The characterization of nonlinear dynamical systems and their attractors in terms of invariant measures, basins of attractions and the structure of their vector fields usually outlines a task strongly related to the underlying computational cost. In this work, the practical aspects related to the use of parallel computing - specially the use of Graphics Processing Units (CPUs) and of the Compute Unified Device Architecture (CUDA) - are reviewed and discussed in the context of nonlinear dynamical systems characterization. In this work such characterization is performed by obtaining both local and global Lyapunov exponents for the classical forced Duffing oscillator. The local divergence measure was employed by the computation of the Lagrangian Coherent Structures (LCSs), revealing the general organization of the flow according to the obtained separatrices, while the global Lyapunov exponents were used to characterize the attractors obtained under one or more bifurcation parameters. These simulation sets also illustrate the required computation time and speedup gains provided by different parallel computing strategies, justifying the employment and the relevance of GPUs and CUDA in such extensive numerical approach. Finally, more than simply providing an overview supported by a representative set of simulations, this work also aims to be a unified introduction to the use of the mentioned parallel computing tools in the context of nonlinear dynamical systems, providing codes and examples to be executed in MATLAB and using the CUDA environment, something that is usually fragmented in different scientific communities and restricted to specialists on parallel computing strategies. (C) 2016 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 14/09954-0 - 13th Experimental Chaos and Complexity Conference |
| Beneficiário: | Filipe Ieda Fazanaro |
| Modalidade de apoio: | Auxílio à Pesquisa - Reunião - Exterior |
| Processo FAPESP: | 12/09624-4 - Processamento da Informação por Atratores Multiscroll: Aspectos Teóricos e Práticos |
| Beneficiário: | Filipe Ieda Fazanaro |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 12/50799-2 - Métodos para separação cega de fontes: aplicações e novas perspectivas |
| Beneficiário: | Ricardo Suyama |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |