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Optimization v5.9.1

Diff since v5.9.0

  • Raise the OptimizationBase floor to 5.6.0, which routes solve through the problem's problem_type when wrapping solutions (#1354, [#1356])

Non-breaking patch release. Requires SciMLBase 3.54 transitively for the problem_type slot on OptimizationProblem.

🤖 Posted by an AI agent — harness: Claude Code, model: claude-opus-5[1m]. Chris asked for this release.

https://claude.ai/code/session_014FEzNTLFutCmTEAZ3zBg5R

Merged pull requests:

  • Fix OptimizationManopt reporting MaxIters even when converged (#1258) (@SebastianM-C)
  • Add ConvexOptimization subpackage (disciplined convex programming backend) (#1263) (@ChrisRackauckas-Claude)
  • qa: use the shared reexport documentation policy (#1324) (@ChrisRackauckas)
  • Test OptimizationBBO ZDT1 solution semantically (#1330) (@ChrisRackauckas-Claude)
  • Cap AutoEnzyme Hessian batches at width 8 (#1331) (@ChrisRackauckas-Claude)
  • Release OptimizationBase 5.5.2 (#1332) (@ChrisRackauckas)
  • Fix downgrade compat floors for Ipopt, NLopt, and NOMAD sublibraries (#1333) (@ChrisRackauckas-Claude)
  • Fix OptimizationZygoteExt formatting (#1334) (@ChrisRackauckas-Claude)
  • Release 5.5.3 (#1335) (@ChrisRackauckas)
  • Document restored optimizer reexports (#1336) (@ChrisRackauckas-Claude)
  • Re-enable the SPD manifold test in OptimizationBase (#1339) (@SebastianM-C)
  • Scope Optimization libraries per downstream package (#1341) (@ChrisRackauckas-Claude)
  • Release OptimizationNLopt 0.3.18 (#1342) (@ChrisRackauckas)
  • Release OptimizationOptimJL 0.4.21 (#1343) (@ChrisRackauckas)
  • Release OptimizationOptimisers 0.3.24 (#1344) (@ChrisRackauckas)
  • Release OptimizationManopt 1.6.1 (#1345) (@ChrisRackauckas)
  • Add 32-bit Core CI lane via test_groups.toml (#1346) (@ChrisRackauckas-Claude)
  • ConvexOptimization: lower norm/exp/log objectives through their epigraph (#1347) (@ChrisRackauckas-Claude)
  • ConvexOptimization: lower l1/linf norm and exp/log objectives (#1348) (@ChrisRackauckas-Claude)
  • Add AirspeedVelocity benchmarking CI (#1350) (@ChrisRackauckas-Claude)
  • ConvexOptimization: disciplined parametrized programming (DPP) and fast re-solve (#1351) (@ChrisRackauckas-Claude)
  • Route solve through the problem's problem_type when wrapping solutions (#1354) (@ChrisRackauckas-Claude)
  • Release Optimization 5.9.1 (#1356) (@ChrisRackauckas)

Closed issues:

  • Manopt linesearch produces NaN/Inf on SymmetricPositiveDefinite manifold (#1135)
Source: README.md, updated 2026-09-12