Fix TrunkSolver for quasi-Newton models - #354
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If the solver is initialized with a model that is not a quasi-Newton model, applying it to a quasi-Newton model with the same dimensions later fails. This change always allocates a vector inside the solver to store the previous gradient.
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Pull request overview
Fixes TrunkSolver reuse when switching from a non–quasi-Newton model to a QuasiNewtonModel of the same dimension by ensuring the “previous gradient” workspace is always allocated.
Changes:
- Always allocate
gn(previous-gradient storage) inTrunkSolverregardless of the initial model type. - Remove the
reset!assertion that prevented reusing a solver instance across quasi-Newton vs non–quasi-Newton models.
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dpo
marked this pull request as draft
January 29, 2026 16:09
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I may not merge this as I would like to manage quasi-Newton updates in the callback instead of in the solver. |
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Superseded by #358. |
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If the solver is initialized with a model that is not a quasi-Newton model, applying it to a quasi-Newton model with the same dimensions later fails at line 240.
This change always allocates a vector inside the solver to store the previous gradient.