pytorch

3eb37905 - unfold_backward: Remove stride >= size kernel in favour of copy_ (#88061)

unfold_backward: Remove stride >= size kernel in favour of copy_ (#88061) unfold_backward has a dedicated kernel for `stride >= size` which uses temporary tensors created by `at::arange` to perform the mapping from unfolded to folded. This instead uses `unfold` to view the output, and does a direct copy from the gradient into the view. In benchmarks I see either no difference or a marginal speed benefit from this PR. Pull Request resolved: https://github.com/pytorch/pytorch/pull/88061 Approved by: https://github.com/albanD