A method and a device suitable for large-scale distributed hydrological simulation
A technology of distributed hydrology and simulation methods, applied in the field of large-scale distributed hydrology simulation methods and devices, can solve problems such as processor resource consumption, achieve the effects of reducing additional consumption, increasing calculation speed, and avoiding additional consumption
Active Publication Date: 2019-06-21
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a method and device suitable for large-scale distributed hydrological simulation, so as to solve the processor resources caused by frequent communication between processes when using dynamic task allocation and blocking communication in the prior art The problem of extra consumption
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Embodiment 1
[0056] Such as figure 1 As shown, the method provided by the embodiment of the present invention is suitable for large-scale distributed hydrological simulation
[0057] S101. Acquire a watershed to be simulated, where the watershed to be simulated includes multiple sub-watersheds;
[0058] S102, adopting a spatial-temporal discrete parallel strategy to spatially divide each sub-basin of the to-be-simulated watershed into static tasks, and allocate the hydrological simulation tasks of the multiple sub-basins of the to-be-simulated watershed to multiple processor cores for parallel execution ;
[0059] Among them, the hydrological simulation calculation process of a single sub-basin at a certain simulation moment is used as a task unit for parallel execution; under static task division, the process on a single processor core is used to execute all sub-basins assigned to this process. For hydrological simulation tasks at all times, non-blocking communication is used to transfer data b...
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The invention provides a method and a device suitable for large-scale distributed hydrological simulation. The calculation speed of distributed hydrological simulation by using a space-time discrete parallel strategy can be increased. The method comprises: acquiring a to-be-simulated basin, wherein the to-be-simulated basin comprises a plurality of sub-basins; Carrying out static task division oneach sub-basin of the basin to be simulated spatially by adopting a space-time discrete parallel strategy, and allocating hydrological simulation tasks of a plurality of sub-basins of the basin to besimulated to a plurality of processor cores for parallel execution, Wherein the hydrological simulation calculation process of a single sub-basin at a certain simulation moment is used as a task unitfor parallel execution, and under the division of the static tasks, processes on a single processor core are used for executing hydrological simulation tasks of all sub-basins distributed to the process at all moments, and a non-blocking communication mode is adopted between the processes to transmit data. The invention relates to the field of hydrological simulation.
Description
Technical field [0001] The invention relates to the field of hydrological simulation, in particular to a method and device suitable for large-scale distributed hydrological simulation. Background technique [0002] Hydrological simulation is a technology used to simulate the physical processes of complex water cycles such as rainfall, infiltration, soil evaporation, plant transpiration, snow melting, river network confluence, etc. It is used as water resources development and utilization, flood prevention and disaster reduction, reservoir management, road construction, urban The pillars in the fields of planning, point source pollution assessment, and basin response to human activities are closely related to human survival. The most widely used simulation method in current hydrological simulation is distributed simulation. Distributed hydrological simulation divides the basin to be studied into several small calculation units (also known as sub-basins) according to factors such a...
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IPC IPC(8): G06F17/50
Inventor 吴佳豪胡长军储根深李扬吴彦飞
Owner UNIV OF SCI & TECH BEIJING