Parallel processing and non-uniform grids in global air quality modeling


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Berkvens, P.J.F. and Botchev, M.A. (2002) Parallel processing and non-uniform grids in global air quality modeling. In: Proceedings of the Second Conference on Air Pollution Modelling and Simulation, APMS'01, April 9-12, 2001, Champs-sur-Marne, France.

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Abstract:A large-scale global air quality model, running efficiently on a single vector processor, is enhanced to make more realistic and more long-term simulations feasible. Two strategies are combined: non-uniform grids and parallel processing. The communication through the hierarchy of non-uniform grids interferes with the inter-processor communication. We discuss load balance in the decomposition of the domain, I/O, and inter-processor communication. A model shows that the communication overhead for both techniques is very low, whence non-uniform grids allow for large speed-ups and high speed-up can be expected from parallelization. The implementation is in progress, and results of experiments will be reported elsewhere.
Item Type:Conference or Workshop Item
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Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/66804
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