Abstract
A general fast parallelization approach of a grid-oriented model is described on the example of the semi-empirical biogenic volatile compound (BVOC) emission model (seBVOC). It uses distributed memory parallel (DMP) model relying on the MPI (message passing interface) library. The parallel version achieves nearly linear decrease in execution time as the number of processors is increased. However, with some numbers of processors the efficiency suffers from unequal load balance caused by different number of calculations within the grid cells. Application of variable domain decomposition improves the load balance adding up to 35% additional decrease of processing time.
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