We present the results from a parallelization of sequential code used for investigating parametric instabilities in large-scale laser-produced plasmas. The physical model consists of a system of two nonstationary, nonlinear, second-order partial differential equations. The solver is semi-implicit in time and employs Fourier and Chebyshev discretization in a three-dimensional space domain. High Performance Fortran is used for the parallelization of the solver. A detailed performance analysis of the parallel code (speedup, scalability, and load balancing) has been carried out for implementation on an IBM RS/6000 SP system using the XL HPF compiler. © 1998 American Institute of Physics.

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