Implementation of a parallel 3-D vacuum electronics simulation code

Summary Form only given, as follows. A three-dimensional electromagnetic particle-in-cell simulation code has been implemented on the NRL Connection Machine-2. Internally, standard algorithms are used as much as possible, but in a parallel formulation. To use advantageously the parallel machine architecture, which includes a large local memory at each processor, optimized nearest-neighbor communication, and flexible hypercube communication, new algorithms have been applied. A fully parallel particle push uses local storage of the fields predetermined at the particle positions. The field calculations use a nearest-neighbor communication constraint overlaid on an interpolating matrix method solver with an irregular spatial mesh. The gather/scatter uses the hypercube communication network and limits the effect of nonuniform computational loading. External to the core calculation is real-time video output of diagnostic graphics, providing rapid feedback to the simulator, with a goal of the implementation being an interactive simulation environment. An interactive mesh creation front end is also under development.<>