1. GPU-CA model for large-scale land-use change simulation.
- Author
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Li, Dan, Li, Xia, Liu, XiaoPing, Chen, YiMin, Li, ShaoYing, Liu, Kai, Qiao, JiGang, Zheng, YiZhong, Zhang, YiHan, and Lao, ChunHua
- Subjects
MATHEMATICAL models ,LAND use ,GRAPHICS processing units ,CELLULAR automata ,GLOBAL studies ,COMPUTER simulation ,HIGH performance computing - Abstract
Land-use change simulation for large-scale regions (i.e. provincial regions or countries) is very useful for many global studies. Such simulation, however, is affected by computational capability of general computers. This paper proposes a method to implement cellular automata (CA) for land use change simulation based on graphics processing units (GPUs). This method can be applied to large-scale land-use change simulations by combining the latest GPU high-performance computing technology and CA. We carried out the experiments by simulating land-use change processes at a provincial scale. This involves a lot of sophisticated techniques, such as model mapping, and computational procedure of GPU-CA model. This proposed model has been validated by land-use change simulation in Guangdong Province, China. The comparison indicates that the GPU-CA model is faster than traditional CA by 30 times. Such improvement is crucial for land-use change simulations in provincial regions and countries. The outputs of the simulation can be further used to provide information to other global change models. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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