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Computer simulations and real-time control of ELT AO systems using graphical processing units
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wang, Lianqi Ellerbroek, Brent |
| Copyright Year | 2012 |
| 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. |
| File Format | PDF HTM / HTML |
| DOI | 10.1117/12.926500 |
| Volume Number | 8447 |
| Alternate Webpage(s) | http://authors.library.caltech.edu/36571/1/844723.pdf |
| Alternate Webpage(s) | https://doi.org/10.1117/12.926500 |
| Journal | Other Conferences |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
