Computer simulations and real-time control of ELT AO systems using graphical processing units
- Creators
-
Wang, Lianqi
- Ellerbroek, Brent
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.
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.Attached Files
Published - 844723.pdf
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Additional details
- Eprint ID
- 36571
- Resolver ID
- CaltechAUTHORS:20130124-133849271
- Association of Canadian Universities for Research in Astronomy (ACURA)
- Caltech
- University of California
- National Astronomical Observatory of Japan
- National Astronomical Observatories of China
- Department of Science and Technology of India
- Gordon and Betty Moore Foundation
- Canada Foundation for Innovation (CFI)
- Ontario Ministry of Research and Innovation
- National Research Council of Canada (NRCC)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- British Columbia Knowledge Development Fund
- Association of Universities for Research in Astronomy (AURA)
- NSF
- Created
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2013-03-07Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 8447