Wang, Lianqi and Ellerbroek, Brent (2012) Computer simulations and real-time control of ELT AO systems using graphical processing units. In: Adaptive Optics Systems III. Proceedings of SPIE. No.8447. International Society for Optical Engineering , Bellingham, WA, Art. No. 844723. ISBN 978-0-8194-9148-0. https://resolver.caltech.edu/CaltechAUTHORS:20130124-133849271
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Abstract
The adaptive optics (AO) simulations at the Thirty Meter Telescope (TMT) have been carried out using the efficient, C based multi-threaded adaptive optics simulator (MAOS, http://github.com/lianqiw/maos). By porting time-critical parts of MAOS to graphical processing units (GPU) using NVIDIA CUDA technology, we achieved a 10 fold speed up for each GTX 580 GPU used compared to a modern quad core CPU. Each time step of full scale end to end simulation for the TMT narrow field infrared AO system (NFIRAOS) takes only 0.11 second in a desktop with two GTX 580s. We also demonstrate that the TMT minimum variance reconstructor can be assembled in matrix vector multiply (MVM) format in 8 seconds with 8 GTX 580 GPUs, meeting the TMT requirement for updating the reconstructor. Analysis show that it is also possible to apply the MVM using 8 GTX 580s within the required latency.
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| Additional Information: | © 2012 SPIE. The TMT Project gratefully acknowledges the support of the TMT collaborating institutions. They are the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, the University of California, the National Astronomical Observatory of Japan, the National Astronomical Observatories of China and their consortium partners, and the Department of Science and Technology of India and their supported institutes. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada, the Natural Sciences and Engineering Research Council of Canada, the British Columbia Knowledge Development Fund, the Association of Universities for Research in Astronomy (AURA) and the U.S. National Science Foundation. | ||||||||||||||||||||||||||||||
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| Series Name: | Proceedings of SPIE | ||||||||||||||||||||||||||||||
| Issue or Number: | 8447 | ||||||||||||||||||||||||||||||
| DOI: | 10.1117/12.926500 | ||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20130124-133849271 | ||||||||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130124-133849271 | ||||||||||||||||||||||||||||||
| Official Citation: | Lianqi Wang ; Brent Ellerbroek; Computer simulations and real-time control of ELT AO systems using graphical processing units. Proc. SPIE 8447, Adaptive Optics Systems III, 844723 (September 13, 2012); doi:10.1117/12.926500 | ||||||||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||
| ID Code: | 36571 | ||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||||||||||||||
| Deposited On: | 07 Mar 2013 19:16 | ||||||||||||||||||||||||||||||
| Last Modified: | 09 Nov 2021 23:23 |
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