Title :
An efficient parallel method for large-scale groundwater flow equation based on PETSc
Author :
Cheng, Tangpei ; Ji, Xiaohui ; Wang, Qun
Author_Institution :
Sch. of Inf. Eng., China Univ. of Geosci. (Beijing), Beijing, China
Abstract :
In this paper, we present an efficient scheme for the parallel solution of large-scale three-dimensional groundwater flow equation. The scheme has been implemented and the program is parallelized by using a SPMD (single-program, multiple data) paradigm and a domain decomposition strategy provided in PETSc (Portable Extensible Toolkit for Scientific Computation). The efficiency and scalability of the parallel-computing scheme are demonstrated by completing a simplified groundwater scenario, in which different preconditioned Krylov subspace methods have been tested and analyzed. The numerical results show that the parallel method could enhance the modeling capabilities and accelerate the simulation process significantly.
Keywords :
finite difference methods; flow simulation; geophysics computing; groundwater; hydrological techniques; parallel algorithms; parallel programming; partial differential equations; Krylov subspace methods; PETSc; Portable Extensible Toolkit for Scientific Computation; SPMD paradigm; domain decomposition strategy; efficient parallel method; finite difference method; large-scale groundwater flow equation; parallel programming; parallel-computing scheme; partial differential equations; single-program multiple data paradigm; Chromium; Computational modeling; Concurrent computing; Conductivity; Equations; Geology; Large-scale systems; Material storage; Parallel processing; Water storage; Finite difference methods; Parallel algorithm; Parallel programming; Partial differential equations;
Conference_Titel :
Information, Computing and Telecommunication, 2009. YC-ICT '09. IEEE Youth Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5074-9
Electronic_ISBN :
978-1-4244-5076-3
DOI :
10.1109/YCICT.2009.5382395
