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                                            Paul Quigley

Interesting matrix-free optimization

Is this basically the idea of a presolve -- that we could avoid creating matrices by evaluating and combining appropriate terms in advance? i.e. combining Ax + Bx into (A+B)x...

Interesting matrix-free optimization

Hi Steven, I started to work on this on a new branch, `feature/directly_apply_linops`. Indexing and summing now occur with no intermediate matrix calculation. Are there any other linops that you...

Interesting matrix-free optimization

Got it working for transpose, too.

Interesting matrix-free optimization

So I'm seeing improved performance on most problems, and some performance drops on a few... but ironically I think this is almost entirely due to the fact that I changed...