基于GPU的液晶大气湍流模拟器的波面生成计算(英文)  

Calculation of liquid crystal wave-front generation atmospheric turbulence simulator based on GPU

作　　者：孔悦[1] 徐熙平[1] 倪小龙[1,2] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]长春理工大学空地激光通信技术国防重点学科实验室,吉林长春130022

出　　处：《红外与激光工程》2014年第9期3061-3065,共5页Infrared and Laser Engineering

摘　　要：提出了一种基于GPU的液晶大气湍流模拟器实时波面生成的计算方法,为了让液晶空间光调制器进行大气湍流类比。依据液晶湍流模拟器高分辨率、高精度的特性讨论CUDA的算法。此外,建立一种基于GPU波面生成的模型并进一步对其优化。最后给出使用CPU和GPU后的结果并进行类比。结果表明:采用231项Zernike系数生成分辨率为256×256的波前所需时间少于2 ms,与传统的采用CPU生成的方法相比速度提升两个量级,满足实时波面生成的要求。In order to achieve the purpose of real-time atmosphere turbulence simulation by used liquid crystal spatial light modulator, A new computing method of liquid crystal atmospheric turbulence simulator real-time wave-front generation based on GPU has been proposed. According to the characteristics of liquid crystal turbulence simulator, which is high resolution, high precision, The Compute Unified Device Architecture was discussed in this paper. Furthermore, a wave-front generation model based on GPU was established with parallel optimization and share memory optimization. Finally, the experimental results by used CPU and GPU wave generation was given. The result shows that： the consumed time by proposed method is less than 2 ms for a Zernike polynomial with 231 wave-front values in resolution of 256 ×256, which is two orders of magnitude less than that of CPU, fully meets the real-time wave-front generation requirements.

关 键 词：图形处理器 CUDA 液晶 湍流计算 

分 类 号：TP332.3[自动化与计算机技术—计算机系统结构]