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Master's Dissertation
DOI
https://doi.org/10.11606/D.55.2018.tde-15032018-144736
Document
Author
Full name
Lauro Cesar Galvão
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1998
Supervisor
Committee
Cuminato, José Alberto (President)
Fortuna, Armando de Oliveira
Santos, Sandra Augusta
Title in Portuguese
Solução Numérica Paralela de Equações Elípticas de Segunda Ordem
Keywords in Portuguese
Não disponível
Abstract in Portuguese
O objetivo deste trabalho é apresentar um algoritmo paralelo que implementa o método do gradiente conjugado com pré condicionamento para resolver equações elípticas de segunda ordem em um domínio retangular. A principal aproximação consiste em substituir as derivadas parciais por diferenças finitas para obter um sistema linear esparso. O domínio é então decomposto de acordo com o número de processadores, e cada um executa o trabalho em um subdomínio específico. A decomposição escolhida minimiza a comunicação entre os processadores, reduzindo substancialmente o tempo de solução.
Title in English
Not available
Keywords in English
Not available
Abstract in English
The aim of this work is to present a parallel algorithm implementing the conjugate gradient method with factorization preconditioning for solving second order elliptic equations in a rectangular domain. The main approach consists of replacing the partia! derivatives with finite differences to obtain a sparse linear system. The domain is then decomposed according to the number of available processors, and each one carnes out its work on a specific subdomain. The chosen decomposition minimizes the communication traffic between the processors, substantially reducing the solution time.
 
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LauroCesarGalvao.pdf (4.01 Mbytes)
Publishing Date
2018-03-15
 
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