Workspace is not required for FFTs of following sizes:
Powers of 2 up to 32768
Powers of 3 up to 19683
Powers of 5 up to 15625
Powers of 6 up to 1296
Powers of 7 up to 2401
Powers of 10 up to 10000
Powers of 11 up to 1331
Powers of 12 up to 1728
- In the future versions of cuFFTDx:
Workspace requirement may be removed for other configurations.
FFT configurations that do not require workspace will continue to do so.