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On the performance of a simple parallel implementation of the ILU-PCG for the Poisson equation on irregular domains

Title
On the performance of a simple parallel implementation of the ILU-PCG for the Poisson equation on irregular domains
Authors
Gibou F.Min C.
Ewha Authors
민조홍
SCOPUS Author ID
민조홍scopus
Issue Date
2012
Journal Title
Journal of Computational Physics
ISSN
0021-9991JCR Link
Citation
vol. 231, no. 14, pp. 4531 - 4536
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We report on the performance of a parallel algorithm for solving the Poisson equation on irregular domains. We use the spatial discretization of Gibou et al. (2002) . [6] for the Poisson equation with Dirichlet boundary conditions, while we use a finite volume discretization for imposing Neumann boundary conditions (Ng et al., 2009; Purvis and Burkhalter, 1979) . [8,10]. The parallelization algorithm is based on the Cuthill-McKee ordering. Its implementation is straightforward, especially in the case of shared memory machines, and produces significant speedup; about three times on a standard quad core desktop computer and about seven times on a octa core shared memory cluster. The implementation code is posted on the authors' web pages for reference. © 2012 Elsevier Inc.
DOI
10.1016/j.jcp.2012.02.023
Appears in Collections:
자연과학대학 > 수학전공 > Journal papers
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