hi,
I have tried to make a fft calculation with opencl in imx6qp,but the speed was so slow.
It cost 300+us to calculate a 2048 points fft of a sine signal when using GPU while almost cost 8000+us with arm. The result was right ,but I wonder if the speed is normal? Or is there any method to accelerate? How long does it cost usually?
Thank you!
Hi vivid
fft algorithms are specially handled by dsp processors, so seems with i.MX6
more suitable to try neon:
Android Community: Ne10 FFT feature | ARM Connected Community
Best regards
igor
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Thank you very much! I had tried the lib NE10,but I didn't now how to add it to the tool-chain of the board,so the target showed that "error while loading shared libraries: libNE10_shared.so.10",do you have any advice?