25 September 2013 Multi-core and GPU accelerated simulation of a radial star target imaged with equivalent t-number circular and Gaussian pupils
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Abstract
Results from the GelOE optical engineering software are presented for the through-focus, monochromatic coherent and polychromatic incoherent imaging of a radial "star" target for equivalent t-number circular and Gaussian pupils. The FFT-based simulations are carried out using OpenMP threading on a multi-core desktop computer, with and without the aid of a many-core NVIDIA GPU accessing its cuFFT library. It is found that a custom FFT optimized for the 12-core host has similar performance to a simply implemented 256-core GPU FFT. A more sophisticated version of the latter but tuned to reduce overhead on a 448-core GPU is 20 to 28 times faster than a basic FFT implementation running on one CPU core.
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Alan W. Greynolds, Alan W. Greynolds, } "Multi-core and GPU accelerated simulation of a radial star target imaged with equivalent t-number circular and Gaussian pupils", Proc. SPIE 8841, Current Developments in Lens Design and Optical Engineering XIV, 88410F (25 September 2013); doi: 10.1117/12.2021036; https://doi.org/10.1117/12.2021036
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