Usually simulations on environment flood issues will face the scalability problem of large scale parallel computing.The plain parallel technique based on pure MPI is difficult to have a good scalability due to the lar...Usually simulations on environment flood issues will face the scalability problem of large scale parallel computing.The plain parallel technique based on pure MPI is difficult to have a good scalability due to the large number of domain partitioning.Therefore,the hybrid programming using MPI and OpenMP is introduced to deal with the issue of scalability.This kind of parallel technique can give a full play to the strengths of MPI and OpenMP.During the parallel computing,OpenMP is employed by its efficient fine grain parallel computing and MPI is used to perform the coarse grain parallel domain partitioning for data communications.Through the tests,the hybrid MPI/OpenMP parallel programming was used to renovate the finite element solvers in the BIEF library of Telemac.It was found that the hybrid programming is able to provide helps for Telemac to deal with the scalability issue.展开更多
The application of marine current turbines for electricity generation could offer a distinct advantage over other renewable energy sources due to the regular and predictable nature of this resource. This paper details...The application of marine current turbines for electricity generation could offer a distinct advantage over other renewable energy sources due to the regular and predictable nature of this resource. This paper details the application of Analytical Hierarchy Process (AHP) as a possible tool for decision makers to better understand the environment and the impacts of the marine current turbines. The best areas for generating energy from the currents were found using a tridimensional model (TELEMAC3D). In addition to applying the energy conversion module, these regions were also evaluated for energy production, which was then applied to the AHP. Several databases (Transmission and Transport, Socioeconomic, Conservation Units, Endangered Species and Geological Information) were compared to minimize decision deviation. The results showed the viability of the northern region of the Southern Brazilian Shelf (SBS) as a possible area to harvest energy from the currents, as much of the studied region was limited by human activities in the coastal zone and sensitive biological resources.展开更多
文摘Usually simulations on environment flood issues will face the scalability problem of large scale parallel computing.The plain parallel technique based on pure MPI is difficult to have a good scalability due to the large number of domain partitioning.Therefore,the hybrid programming using MPI and OpenMP is introduced to deal with the issue of scalability.This kind of parallel technique can give a full play to the strengths of MPI and OpenMP.During the parallel computing,OpenMP is employed by its efficient fine grain parallel computing and MPI is used to perform the coarse grain parallel domain partitioning for data communications.Through the tests,the hybrid MPI/OpenMP parallel programming was used to renovate the finite element solvers in the BIEF library of Telemac.It was found that the hybrid programming is able to provide helps for Telemac to deal with the scalability issue.
文摘The application of marine current turbines for electricity generation could offer a distinct advantage over other renewable energy sources due to the regular and predictable nature of this resource. This paper details the application of Analytical Hierarchy Process (AHP) as a possible tool for decision makers to better understand the environment and the impacts of the marine current turbines. The best areas for generating energy from the currents were found using a tridimensional model (TELEMAC3D). In addition to applying the energy conversion module, these regions were also evaluated for energy production, which was then applied to the AHP. Several databases (Transmission and Transport, Socioeconomic, Conservation Units, Endangered Species and Geological Information) were compared to minimize decision deviation. The results showed the viability of the northern region of the Southern Brazilian Shelf (SBS) as a possible area to harvest energy from the currents, as much of the studied region was limited by human activities in the coastal zone and sensitive biological resources.
