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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

[en] SOLVING LARGE SYSTEMS OF LINEAR EQUATIONS ON MULTI-GPU CLUSTERS USING THE CONJUGATE GRADIENT METHOD IN OPENCLTM / [pt] RESOLUÇÃO DE SISTEMAS DE EQUAÇÕES LINEARES DE GRANDE PORTE EM CLUSTERS MULTI-GPU UTILIZANDO O MÉTODO DO GRADIENTE CONJUGADO EM OPENCLTM

ANDRE LUIS CAVALCANTI BUENO 27 September 2013 (has links)
[pt] Sistemas de equações lineares esparsos e de grande porte aparecem como resultado da modelagem de vários problemas nas engenharias. Dada sua importância, muitos trabalhos estudam métodos para a resolução desses sistemas. Esta dissertação explora o potencial computacional de múltiplas GPUs, utilizando a tecnologia OpenCL, com a finalidade de resolver sistemas de equações lineares de grande porte. Na metodologia proposta, o método do gradiente conjugado é subdivido em kernels que são resolvidos por múltiplas GPUs. Para tal, se fez necessário compreender como a arquitetura das GPUs se relaciona com a tecnologia OpenCL a fim de obter um melhor desempenho. / [en] The process of modeling problems in the engineering fields tends to produce substantiously large systems of sparse linear equations. Extensive research has been done to devise methods to solve these systems. This thesis explores the computational potential of multiple GPUs, through the use of the OpenCL tecnology, aiming to tackle the solution of large systems of sparse linear equations. In the proposed methodology, the conjugate gradient method is subdivided into kernels, which are delegated to multiple GPUs. In order to achieve an efficient method, it was necessary to understand how the GPUs’ architecture communicates with OpenCL.

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