Parallelization method of distributed hydrological simulation under cluster environment
A distributed hydrology and environment technology, applied in the direction of concurrent instruction execution, machine execution device, special data processing application, etc., can solve problems such as the upper limit of speedup ratio, achieve the effect of improving efficiency and breaking through performance bottlenecks
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[0027] Combined below as figure 1 The flowchart shown in the upper reaches of the Gan River (62,700 km 2 ) of distributed hydrological simulation parallel computing as an example to illustrate the specific implementation method of the present invention:
[0028] (1) Obtain the SRTM (Shuttle Radar Topography Mission) DEM data with a resolution of 90m in the upper reaches of the Ganjiang River, and divide the sub-basins according to the following steps: filling, extracting flow direction, flow accumulation, river network extraction, river network coding, and sub-basins extract. Then, the extracted sub-watersheds are vectorized, and sub-basins are classified according to the upstream-downstream relationship. The grading method is: the source sub-basin is the first level, and the level of the non-source sub-basin is the maximum level of its upstream reach plus 1. The sub-basin classification information will be used to determine the calculation order of the sub-basins in the fo...
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