Andrew Knyazev, Professor Emeritus

No, there is no any documentation for three `svds` solvers: `arpack`, `propack`, and `lobpcg` in terms of performance and running time. Yes, there must be. Benchmarking should have been a...

@mdhaber thanks - great, I did not know!

Is not it needed to return something meaningful in the definition of matmat so that it doesn't fall back to matvec?

I do not see this example as a proof of a bug. It's documented at https://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.linalg.aslinearoperator.html : "An object with .shape and .matvec attributes" It is reasonable to request that...

Ready for review. @WarrenWeckesser ? While waiting for review, I have added docsting examples to fully address https://github.com/scipy/scipy/issues/16741

Reade for review and merge, IMHO.

While waiting for review, I have significantly extended the docsrting example. Hopefully, this PR gets attention, reviewed and merged... There is still another significant issue to fix in svds: https://github.com/scipy/scipy/issues/16330...

Merging main in https://github.com/scipy/scipy/pull/16712/commits/6c0ce33c407745fb24c3626234105cec3f5281cf for unknown reasons broke one unit test `test_small_sigma2` just for Linux Meson tests / Meson build (3.9, false) and Linux Tests / Python 3.8-dbg with similar...

Could someone please help resolving https://github.com/scipy/scipy/pull/16712#issuecomment-1237401746 ? Merging main in https://github.com/scipy/scipy/commit/6c0ce33c407745fb24c3626234105cec3f5281cf gave completely wrong results in the unit test test_small_sigma2 just for Linux Meson tests / Meson build (3.9, false)...

> I've seen that `test_small_sigma2` a few more times recently I believe, I think it's a flaky test. A little unclear where it is coming from indeed. Looking at the...