摘要:本文针对国内日照分析软件实际应用中出现的日照复杂三维模型、屋顶、坡地等建模困难和复杂模型下的大体量日照计算计算速度慢, 甚至无法完成实际工程计算等难点问题进行了比较深入的探讨和研究。结合PKPM SUNLIGHT日照分析软件，本文介绍了软件在应用方面使用的大量在国内处于领先地位的创新应用和技术，如使用完全自主知识产权的三维图形平台完成三维建模，复杂多坡屋顶和复杂地形的快速建模和坡地等时线分析，超大规模工程求解计算方面，介绍了软件在国内日照计算领域应用的核心计算显卡GPU计算加速等创新技术。本文提供了和其它软件的计算时间对比数据、大规模工程分析实例时间实测数据、软件计算结果和现场实测对比数据。

Abstract: This paper discussed new problems during sunlight software application, such as complicate 3D modeling and large scale project computing, even fail to finish computing. Taking PKPM sunlight software as example, which give correspoing creative technology solutions to modeling, such as domestic 3D modeling graphic platform, complicate pitched roof and terrain quick modeling and analyse. For large scale project computing, this paper discussed kernal graphics card GPU accerlation, and also gave some computing time comparison result and real large project computing examples.