Study on the Parallel Algorithm for Numerical Simulation of Groundwater Based on the MPI
Huang Lin-xian · Anhui nongye kexue · 2012
Numerical simulation of groundwater is an important method used to study and analyze various groundwater problems.Aiming at solving the problems,such as long processing time and low operating performance of the modeling,which would occur when using traditional serial algorithm to process the mass data for numerical simulation of groundwater,a coarse-grained parallel PCG algorithm with low communication overhead which adopted Cholesky preconditioning technique was designed using Message Passing Interface(MPI) in a distributed storage system in this study.According to the test on the Linux cluster environment with four processing cores,the speedup obtained from the programs would be increased as the increase of processing core.The maximum speedup 2.21,would be obtained when four processing cores were used,which indicates that the designed parallel PCG algorithm has a good acceleration effect and expandability.