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| Titel |
OASIS4: a coupling software for next generation earth system modelling |
| VerfasserIn |
René Redler, Sophie Valcke, Hubert Ritzdorf |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250033707
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| Zusammenfassung |
| We present the latest version of the OASIS4 coupling software which includes the
commonly known point based 2-dimensional and 3-dimensional interpolation schemes
(bilinear, trilinear, bicubic, nearest neighbour), and 2-dimensional conservative
remapping. Furthermore, a complete parallel search is available taking into account
specific requirements at process boundaries. Identical search results are guaranteed
which are independent of the domain partitioning for all supported interpolation
schemes and grid types. We support this functionality for block-structured regular
and horizontally irregular grids as well as Gauss-reduced grids. The geographical
information is described in spherical polar coordinates. The parallel "multi-grid"
search ensures low CPU cost to perform the task of the neighbourhood search and at
the same time showing a good scalability when applied to grid partitioned domains.
As the CPU costs for the multi-grid search increase only linear with grid-size the
new software becomes extremely beneficial when applied for high-resolution models.
We show first benchmark results with simple but realistic test configurations to
demonstrate the efficiency and scalability. Typically, the compute time needed to
perform the neighbourhood search is in the order of a few seconds and is only weakly
dependent on the grid size. |
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