(tuto)= # Tutorials We show in these tutorials how to use the FFT classes. These classes are the basic components of FluidFFT. Note however that for most users, it's going to be simpler to use directly the "operators" classes {class}`fluidfft.fft2d.operators.OperatorsPseudoSpectral2D` and {class}`fluidfft.fft3d.operators.OperatorsPseudoSpectral3D`. ```{toctree} :maxdepth: 1 ipynb/tuto_fft2d_seq.md ipynb/executed/tuto_fft2d_mpi ipynb/executed/tuto_fft2d_mpi_domain_decomp ipynb/tuto_fft3d_seq.md ipynb/executed/tuto_fft3d_mpi ipynb/executed/tuto_fft3d_mpi_domain_decomp ```