Pangolin v1.0, a conservative 2-D advection model towards large-scale parallel calculation
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-02-01
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| Series: | Geoscientific Model Development |
| Online Access: | http://www.geosci-model-dev.net/8/205/2015/gmd-8-205-2015.pdf |
| Summary: | 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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| ISSN: | 1991-959X 1991-9603 |