Abstract
Parallel Monte Carlo techniques for simulating the evolution of an assembly of charged particles interacting with a background gas medium under the influence of an electrical field are presented. This simulation problem has inherent parallelism in nature. All particles can be traced independently in a short time interval. We have overcome three major difficulties: (1) the number of particles to be simulated is increasing over time due to the ionization process; (2) the conditional branching statements do not inhibit multiprocessing through proper manual program tuning; (3) concurrency and vectorization are fully utilized through the new parallelized Monte Carlo method. The shared-memory vector multiprocessor alliant FX/80 has been used for performance measurements. Significant speedup has been achieved.
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