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Cap probing work and store reduced-cost bounds in a flat vector. - #3552
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Stop presolve probing once propagated bound changes exceed a work budget, and replace the per-column lurking-bound multimaps with a sorted vector. Co-authored-by: ludwikgorski-lab <ludwikgorski-lab@users.noreply.github.com>
This was referenced Nov 5, 2026
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Thanks, I acknowledge that there are optimizations to do in this context, and this may provide pointers for how it can be achieved by our developers |
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Draft. Not ready for review and not for merge yet.
Stop presolve probing once propagated bound changes exceed a work budget, and replace the per-column lurking-bound multimaps with a sorted vector.
Research notes attribute about 3× versus base on the plate-solver suite to the probing work cap plus flat reduced-cost. 10× is still open. This pull request is that pair, not the later path-preserving keepers.
Head:
ludwikgorski-lab:cursor/probing-work-budget-0b12