On Tue, 21 Feb 2023 at 18:00, Rok Mihevc <rok.mih...@gmail.com> wrote: > > > > > Should we rule that `dim_names` and `permutation` are mutually exclusive? > > > > Since `dim_names` have to "map to the physical layout (row-major)" that > means permutation will always be trivial which indeed makes it unnecessary > to store both.
I don't think it is necessarily needed to explicitly make them mutually exclusive. I don't know how useful this would in practice, but you certainly *can* specify both in a meaningful way. Re-using the example of NHWC data, which is physically stored as NCHW, you can keep track of this by specifying a permutation of [2, 0, 1], but at the same time you could also still save the dimension names as ["C", "H", "W"].
