Title :
Study and implementation on parallel processing algorithm for DEPS
Author :
Zhu, Lingfeng ; Shao, Yun ; Fan, Xiangtao ; Guo, Huadong
Author_Institution :
Inst. of Remote Sensing Applications, Chinese Acad. of Sci., Beijing, China
Abstract :
A study on efficient visualization and real-time interactivity of large-scale scenes is discussed. Introducing parallel processing technology, we present a parallelizable strategy with the pipeline algorithm, realize this parallel algorithm based on shared-memory, and then apply this program to a test site, the Peking Olympic Games planning mixed scenes, including real-time rendering, dynamical texture loading, quick browsing and so on. The results show a running performance and real-time interactivity improvement of DEPS (Digital Earth Prototype System) when using this algorithm. The parallel program of this paper was developed and running on a Silicon Graphics multiprocessor, Onyx 3200, with four MIPS R12000 processors and InfiniteReality 3 graphic accelerator, under IRIX 6.5 operating system.
Keywords :
geographic information systems; geophysics computing; image texture; parallel algorithms; pipeline processing; rendering (computer graphics); shared memory systems; Digital Earth Prototype System; IRIX 6.5 operating system; MIPS R12000 processor; Silicon Graphics multiprocessor; browsing; dynamically texture; graphic accelerator; parallel processing algorithm; pipeline algorithm; real time interactivity; real time rendering; textures loading; Graphics; Large-scale systems; Layout; Parallel algorithms; Parallel processing; Pipelines; Process planning; Strategic planning; Testing; Visualization;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1295318
