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| Titel |
Pangolin v1.0, a conservative 2-D advection model towards large-scale parallel calculation |
| VerfasserIn |
A. Praga, D. Cariolle, L. Giraud |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 8, no. 2 ; Nr. 8, no. 2 (2015-02-09), S.205-220 |
| Datensatznummer |
250116106
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| Publikation (Nr.) |
 copernicus.org/gmd-8-205-2015.pdf |
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| Zusammenfassung |
| To exploit the possibilities of parallel computers, we designed a large-scale
bidimensional atmospheric advection model named Pangolin. As the basis for
a future chemistry-transport model, a finite-volume approach for advection
was chosen to ensure mass preservation and to ease parallelization. To
overcome the pole restriction on time steps for a regular latitude–longitude
grid, Pangolin uses a quasi-area-preserving reduced latitude–longitude grid.
The features of the regular grid are exploited to reduce the memory footprint
and enable effective parallel
performances. In addition, a custom domain decomposition algorithm is presented. To
assess the validity of the advection scheme, its results are compared with
state-of-the-art models on algebraic test cases. Finally, parallel
performances are shown in terms of strong scaling and confirm the efficient
scalability up to a few hundred cores. |
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