tree 0ec8cda8348d093bbded0c10e104069c09000baf
parent 478069d6f2ee4878d129425219bea9a23ee566f0
author lezcano <lezcano-93@hotmail.com> 1638372792 -0800
committer Facebook GitHub Bot <facebook-github-bot@users.noreply.github.com> 1638372878 -0800

Modify LU_backward and lu_solve_backward to use linalg_solve_triangular (#63569)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63569

This PR also rewrites `lu_solve_backward` from scratch going from
solving 5 systems of equations to just 2.

cc jianyuh nikitaved pearu mruberry walterddr IvanYashchuk xwang233 Lezcano

Test Plan: Imported from OSS

Reviewed By: mruberry

Differential Revision: D32618014

Pulled By: anjali411

fbshipit-source-id: 0e915bcf7045a4db43ffd076d807beac816c8538