I am confused about this statement from the CUFFT Library User Guide (PG-05327-040_V01, February 2011, page 25):
If I am correct, the X-dimension of a 1D transform is the same as the length of the transform, in which case the manual suggests that one should restrict transform lengths to 8192 for Fermi-class GPUs. But, from elsewhere in the manual (and also from experience), it is clear that 1D transform lengths can be greater than 8192. So what does the quoted statement actually mean? Is it that it is applicable only to multi-dimensional transforms?