Portabilidade e Eficiência do Método Fletcher de Aplicações Sísmicas em Arquiteturas Multicore e GPU

  • Matheus Serpa Universidade Federal do Rio Grande do Sul
  • Pablo José Pavan Universidade Federal do Rio Grande do Sul
  • Jairo Panetta Instituto Tecnológico de Aeronáutica
  • Antônio Azambuja Petrobras
  • Alexandre Carissimi Universidade Federal do Rio Grande do Sul
  • Philippe Olivier Navaux Universidade Federal do Rio Grande do Sul

Resumo


A simulação da propagação de ondas acústicas é a base das ferramentas de imagem sı́smica utilizadas pela indústria de petróleo e gás. Para realizar tais simulações, arquiteturas de CAD são empregadas, fornecendo resultados mais rápidos e com maior precisão a cada geração de processadores. Entretanto, para atingir alto desempenho nessas arquiteturas, vários desafios devem ser levados em consideração no momento do desenvolvimento da aplicação. Neste artigo, a Modelagem Fletcher foi otimizada para multicore e GPU e o desempenho, o consumo de energia e a eficiência energética de oito versões do código foram avaliados. Os resultados mostram que a versão CUDA tem o melhor desempenho e eficiência energética; no entanto, a versão OpenACC que tem a vantagem da portabilidade, tem um desempenho e degradação de eficiência energética de apenas 10 e 8% comparado com CUDA. ∗

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Publicado
08/11/2019
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SERPA, Matheus; PAVAN, Pablo José; PANETTA, Jairo; AZAMBUJA, Antônio; CARISSIMI, Alexandre; NAVAUX, Philippe Olivier. Portabilidade e Eficiência do Método Fletcher de Aplicações Sísmicas em Arquiteturas Multicore e GPU. In: SIMPÓSIO EM SISTEMAS COMPUTACIONAIS DE ALTO DESEMPENHO (WSCAD), 20. , 2019, Campo Grande. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2019 . p. 169-180. DOI: https://doi.org/10.5753/wscad.2019.8666.