Computer simulations and real-time control of ELT AO systems using graphical processing units
Computer simulations and real-time control of ELT AO systems using graphical processing units
复制标题
使用图形处理单元对 ELT AO 系统进行计算机模拟和实时控制
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
B. Ellerbroek
中科院分区:
文献类型:
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作者:
Lianqi Wang;B. Ellerbroek
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.
影响因子:
1.9
作者:
Basden A
通讯作者:
Basden A