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@InProceedings{FreitasMend:2019:RoAnPe,
               author = "Freitas, Henrique Renn{\'o} de Azeredo and Mendes, Celso Luiz",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Roofline analysis and performance optimization of the MGB 
                         hydrological model",
            booktitle = "Anais...",
                 year = "2019",
                pages = "61--72",
         organization = "Simp{\'o}sio em Sistemas Computacionais de Alto Desempenho, 20.",
            publisher = "Sociedade Brasileira de Computa{\c{c}}{\~a}o",
             keywords = "Performance evaluation, Application optimization, Roofline model, 
                         CPU/GPU parallelism.",
             abstract = "The Roofline model gives insights about the performance behaviorof 
                         applications bounded by either memory or processor limits, 
                         providing usefulguidelines for performance improvements. This work 
                         uses the Roofline model onthe analysis of the MGB model that 
                         simulates hydrological processes in large-scale watersheds. 
                         Real-world input data are used to characterize the performanceon 
                         two multicore architectures, one with only CPUs and one with 
                         CPUs/GPU.The MGB model performance is improved with optimizations 
                         for better memoryuse, and also with shared-memory (OpenMP) and GPU 
                         (OpenACC) parallelism.CPU performance achieves42:51 %and50:17 %of 
                         each systems peak, whereasGPU performance is low due to overheads 
                         caused by the MGB model structure.",
  conference-location = "Campo Grande, MS",
      conference-year = "16-18 out.",
                  doi = "10.5753/wscad.2019.8657",
                  url = "http://dx.doi.org/10.5753/wscad.2019.8657",
                label = "lattes: 6700293516531228 1 FreitasMend:2019:RoAnPe",
             language = "en",
           targetfile = "freitas_roofline.pdf",
                  url = "https://sol.sbc.org.br/index.php/wscad/article/view/8657",
        urlaccessdate = "2024, Mar. 28"
}


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