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Old 2020-03-07, 06:36   #5
VBCurtis's Avatar
Feb 2005
Riverside, CA

24·263 Posts

In general, LLR does not benefit from splitting an FFT into threads such that FFT size divided by threadcount is smaller than 128k.

That is, a 256k FFT size will run 2-threaded quite nicely. FFTs below 200k in size are not efficient 2-threaded. I've run a ~400k FFT 3-threaded with reasonable success.
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