Study of Parallel Computation for Ground-Water Solute Transport

Abstract

This paper conducts a distributed parallel computation associated with domain decomposition with overlapping for the simulation of ground-water solute transport in the regional areas. Contaminant transport model based on the two-dimensional finite analytic numerical solution, an analytical-based numerical method, is taken as a discretization tool in this study. All the computation is carried out on the IBM/SP1 parallel computer with multiple processors, and a parallel virtual machine is utilized as a parallel computation tool for data communication and message passing among processors. The performance of the parallel computation is assessed through the numerical simulation in the illustrated example. The parallel implementation demonstrates that the simulation improves on accuracy, greatly reduces computational time speeding up to 5.5 times for using eight processors as compared with that of a unit processor, and the optimal efficiency 0.91 is found by using four processors. The extension to a three-dimensional parallel computation for the finite analytic method and the future aspects to be explored further also are addressed.