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Cannot init(::NonlinearLeastSquaresProblem, NewtonRaphson()) with empty u0

bugSomething isn't workingSomething isn't working

Status: Open.

#912 In SciML/NonlinearSolve.jl;

· AayushSabharwal opened on Apr 14, 2026

Per-variable model-informed trust region bounds (à la Wang & Tchelepi)

Status: Open.

#911 In SciML/NonlinearSolve.jl;

· pepijndevos opened on Apr 14, 2026

Enzyme: MixedReturnException with PolyAlgorithm + NamedTuple broadcast in reverse rule

Status: Open.

#878 In SciML/NonlinearSolve.jl;

· ChrisRackauckas-Claude opened on Mar 25, 2026

Enzyme LLVM crash differentiating through NonlinearSolve on Julia 1.12

Status: Open.

#877 In SciML/NonlinearSolve.jl;

· ChrisRackauckas-Claude opened on Mar 24, 2026

Bug: NLsolveJL + SIAMFANLEquationsJL allocate a dense Jacobian for Anderson Acceleration

bugSomething isn't workingSomething isn't working

Status: Open.

#862 In SciML/NonlinearSolve.jl;

· briochemc opened on Mar 5, 2026

Levenberg–Marquardt variant for underdetermined least-square problems?

Status: Open.

#851 In SciML/NonlinearSolve.jl;

· stevengj opened on Feb 23, 2026

Linesearch assumes f to be Enzyme compatible

bugSomething isn't workingSomething isn't working

Status: Open.

#837 In SciML/NonlinearSolve.jl;

· hexaeder opened on Feb 19, 2026

solve(::NonlinearLeastSquaredProblem, ::LevenbergMarquardt(; linsolve=CholeskyFactorization()) by setting J_cache::SMatrix to integer

bugSomething isn't workingSomething isn't working

Status: Open.

#817 In SciML/NonlinearSolve.jl;

· RomeoV opened on Feb 15, 2026

Pre (Julia 1.13) tests failing due to ReTestItems ScopedValues incompatibility

Status: Open.

#776 In SciML/NonlinearSolve.jl;

· ChrisRackauckas-Claude opened on Jan 11, 2026

Downgrade tests failing due to Resolver.jl incompatibility with [sources]

Status: Open.

#774 In SciML/NonlinearSolve.jl;

· ChrisRackauckas-Claude opened on Jan 11, 2026

Nonlinear least squares CuArrays support for arbitrary residual shape

bugSomething isn't workingSomething isn't working

Status: Open.

#746 In SciML/NonlinearSolve.jl;

· cao-fan opened on Dec 13, 2025

Interface for combined residual and Jacobian evaluations

Status: Open.

#743 In SciML/NonlinearSolve.jl;

· termi-official opened on Nov 28, 2025