Study on Massively Parallel Simulations and Visualizations

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Computer simulations have been important and are frequently used in advanced science and technology. Advanced simulations require large computation times and huge memory capacities of computers. Massively parallel computers have been attractive for advanced simulations instead of supercomputers in this decade. Parallelized simulations, however, have not been studied sufficiently and the visualizations of simulation results also have been more important recently.The study on massively parallel simulations and visualizations focuses on the advanced scientific field such as physics, Chemistry, Material Science, Fluid Dynamics and Neural Networks, We implemented many parallelized simulations on massively parallel computers : CM-5, ncube2 and Parsytec GC and demonstrated visualization of simulation results by Computer Graphics.To achieve high-speed parallel simulations, we developed the dynamics load balancing method for Molecular Dynamics on CM-5, the global communication method for room illlumination simulation by Radiosity on Parsytec GC,and the packed message passing method for neural network on ncube2. We also snow the effective visualizations of huge simulation data using 3D computer graphics.