OpInfo tests for `(svd|pca)_lowrank` (#69107)
Summary:
As per title.
While working on this I have discovered several issues with these methods related to grad instabilities. I will file them and link here later. These were quite painful to force to pass all the tests with these discovered issues, sorry for the delay, mruberry!
cc jianyuh nikitaved pearu mruberry walterddr IvanYashchuk xwang233 Lezcano
Pull Request resolved: https://github.com/pytorch/pytorch/pull/69107
Reviewed By: zou3519
Differential Revision: D32920341
Pulled By: mruberry
fbshipit-source-id: 15b33e2b46acdcbff8a37d8e43e381eb55d1a296
