Acceleration of adaptive optics simulations using programmable logic
Acceleration of adaptive optics simulations using programmable logic
复制标题
使用可编程逻辑加速自适应光学模拟
DOI：
10.1111/j.1365-2966.2005.09670.x
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
R. Wilson
中科院分区：
文献类型：
--
作者：
A. Basden;F. Assemat;T. Butterley;D. Geng;C. Saunter;R. Wilson
数值模拟是天文自适应光学系统设计和优化的重要组成部分。AO的模拟计算是昂贵的，并且随着校正系统所需的空间阶数的增加，问题随着望远镜孔径尺寸迅速缩放。对超大型望远镜的AO系统进行实际模拟超出了所有现代并行超级计算机的能力，但最大的并行超级计算机。在这里，我们描述了一个更经济有效的方法，通过使用硬件加速使用现场可编程门阵列。通过将模拟的关键部分转移到可编程逻辑中，可以预期计算带宽的大幅增加。我们表明，波前传感器的图像质心的计算可以加速的一个因素，4通过将该算法转化为硬件。在硬件中实现AO模拟的更高要求部分将导致高达1000倍的更大性能改进。Ke yw ords：instrumentation：adaptive optics <$methods：numerical <$techniques：miscellaneous <$telescopes <$instrumentation：high angular resolution.
Numerical simulation is an essential part of the design and optimization of astronomical adaptive optics (AO) systems. Simulations of AO are computationally expensive and the problem scales rapidly with telescope aperture size, as the required spatial order of the correcting system increases. Practical realistic simulations of AO systems for extremely large telescopes are beyond the capabilities of all but the largest of modern parallel supercomputers. Here, we describe a more cost-effective approach through the use of hardware acceleration using field programmable gate arrays. By transferring key parts of the simulation into programmable logic, large increases in computational bandwidth can be expected. We show that the calculation of wavefront sensor image centroids can be accelerated by a factor of 4 by transferring the algorithm into hardware. Implementing more demanding parts of the AO simulation in hardware will lead to much greater performance improvements of up to 1000 times. Ke yw ords: instrumentation: adaptive optics ‐ methods: numerical ‐ techniques: miscellaneous ‐ telescopes ‐ instrumentation: high angular resolution.