1 2 1-D: FFTW on vector of size 10 3DIM: 1, N 10, Ny 12 4 5 2-D: FFTW on vector of size 100 6DIM: 2, N 100, Ny 120 7 8 3-D: FFTW on vector of size 1000 9DIM: 3, N 1000, Ny 1200 10 11 4-D: FFTW on vector of size 10000 12DIM: 4, N 10000, Ny 12000 13