Creating any cuFFTplan (through methods such as cufftPlanMany or cufftPlan2d) has become very slow in the latest versions of CUDA, taking about ~0.15s. This is fairly significant when my old i7-8700K does the same FFT in 0.0013s. Our workflow typically involves doing 2d and 3d FFTs with sizes of ab…

cufftPlan creation deadly slow on CUDA 11+

Robert_Crovella September 21, 2021, 6:01pm 2

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