Michael Feldmeier

Running this (model strange) on my machine: Running HiGHS 1.5.3 [date: 2023-07-27, git hash: ccb115d11-dirty] Copyright (c) 2023 HiGHS under MIT licence terms QP issue1363 has 1 rows; 18 cols;...

Managed to reproduce the bug. Now trying to find out what goes on.

This is an interesting one. At iteration 6, a (minor-iteration) search direction is computed that's not a descent direction. At iteration 7, a -NaN value appears in the search direction...

I've spent a lot of time on this. Insights so far: The first couple of iterations are essentially flipping bounds for some active bound constraints. The basis consists of the...

Thanks for reporting this issues. The problem is that there is a 10200x10200 matrix that needs to be factorized right at the start of the first iteration, and the time...

HUESTIS is working fine with the latest changes in the QP solver. PRIMAL3 has been working for a while. STADAT1 is still failing, with varying reasons. QGROW22: with the latest...

Alternative idea would be having write(filename) as a function of Model rather than the Highs class (and maybe read(filename) as a static function of Model producing a Model object). The...

I don't get the same error after doing some other fixes on the qp solver (possibly this memory issue is fixed by #1282), but it terminates with the wrong solution...

Intererstingly, with the latest updates to the QP solver, this instance now fails due to degeneracy detected. Still looking into it, instance appears to be a bit sensitive.