Encyclopedia of GIS

Living Edition
| Editors: Shashi Shekhar, Hui Xiong, Xun Zhou


Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-23519-6_1606-1



A graphics processing unit (GPU) is an electronic circuit originally designed to accelerate real-time computation for computer graphics. As one component of the basic hardware inside a modern personal computer, the GPU is connected to the central processing unit (CPU) through a system bus. For the purpose of fast image rendering, which requires that the whole process of image rendering should be completed within one frame (typically 1/30 s), the GPU has been inherently designed as a highly parallelized processor containing many cores, high memory bandwidth, and single-instruction multiple-data (SIMD) execution (Lindholm et al., 2008; Garland and Kirk, 2010).

In recent years, the high performance of modern GPUs has motivated researchers to explore general-purpose computing on GPUs (GPGPUs). This has resulted in GPUs taking over the computational tasks traditionally performed by CPUs, especially...


Graphic Processing Unit Central Processing Unit Compute Unify Device Architecture Streaming Multiprocessor Graphic Processing Unit Memory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Authors and Affiliations

  1. 1.State Key Laboratory of Resources & Environmental Information SystemInstitute of Geographic Sciences & Natural Resources Research, Chinese Academy of SciencesBeijing P.R.China