SciML/Optimization.jl

View on GitHub

Mathematical Optimization in Julia. Local, global, gradient-based and derivative-free. Linear, Quadratic, Convex, Mixed-Integer, and Nonlinear Optimization in one simple, fast, and differentiable interface.

Stars: 839
Forks: 100
Open beginner issues: 0
Indexed issues: 117
Avg merge: 20h 43m
Merged PRs (30d): 38

Dominant language: Julia
License: MIT
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

117 open issues indexed

OptimizationNOMAD does not compile Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 64/100

SciML/Optimization.jl#1358 · 2 comments · Opened Sep 13, 2026
OptimizationBase QA: JET reports _prep_grad undefined after the supplied-gradient change Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

SciML/Optimization.jl#1296 · Opened Aug 11, 2026
OptimizationManopt QA misses deprecated Manopt reexport in generated allow-list Open

Difficulty 1/5 1-3 hours Newbie friendliness 88/100

SciML/Optimization.jl#1295 · Opened Aug 11, 2026
[OptimizationMadNLP] strict Aqua persistent-task QA fails under Julia 1.10 --compiled-modules=no Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#1294 · Opened Aug 5, 2026
Register the version-sync releases (#1287) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

SciML/Optimization.jl#1292 · 47 comments · Opened Aug 1, 2026
SciMLTesting 2.3.0 breaks facade sublibrary QA on inherited reexports Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

SciML/Optimization.jl#1278 · Opened Jul 20, 2026
Public guidance for solver wrappers converting maxiters Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

SciML/Optimization.jl#1242 · 1 comment · Opened Jul 5, 2026
`missing_second_order_ad` warning fires even when an analytical Hessian is supplied via `OptimizationFunction(f; hess = ...)` Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

SciML/Optimization.jl#1240 · Opened Jul 2, 2026
Fix sublibrary downgrade-compat floor failures (re-enabled by centralized DowngradeSublibraries) Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

SciML/Optimization.jl#1215 · 1 comment · Opened Jun 4, 2026
Clarify data iterator interface Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

SciML/Optimization.jl#1203 · Opened May 7, 2026
GPU support for AugLag Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/Optimization.jl#1202 · Opened May 7, 2026
`sol.prob` on an `OptimizationSolution` gives `OptimizationCache` instead of `OptimizationProblem` Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

SciML/Optimization.jl#1191 · 1 comment · Opened Apr 24, 2026
Downgrade sublibrary tests disabled Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#1156 · Opened Jan 24, 2026
Re-enable certification.md tutorial when SymbolicAnalysis.jl supports Symbolics 7 Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

SciML/Optimization.jl#1147 · Opened Jan 14, 2026
Re-enable certification tutorial when SymbolicAnalysis supports Symbolics 7 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/Optimization.jl#1141 · Opened Jan 12, 2026
Downgrade Sublibraries CI failing due to upstream compatibility issues Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

SciML/Optimization.jl#1138 · 1 comment · Opened Jan 11, 2026
AutoSymbolics with AmplNLWriter produces NaN results in HS071 test Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#1136 · Opened Jan 11, 2026
ForwardDiff gradient dispatch issue with Float32 ComponentArrays in DiffEqFlux test Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#1134 · Opened Jan 11, 2026
Early stopping errors using LBFGS Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

SciML/Optimization.jl#1130 · Opened Jan 5, 2026
Expose CMAEvolutionStrategy sigma0? Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

SciML/Optimization.jl#1074 · 1 comment · Opened Oct 23, 2025
Catch unsupported keyword arguments Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/Optimization.jl#1051 · 1 comment · Opened Oct 10, 2025
Issue with OptimizationManopt initial Hessian Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#1036 · 2 comments · Opened Oct 2, 2025
Improve the tutorials for optimization on a manifold Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

SciML/Optimization.jl#1035 · 16 comments · Opened Oct 2, 2025
Enzyme does not work with Hessian-free optimizers Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

SciML/Optimization.jl#1030 · Opened Oct 1, 2025
Expose Brent's Method from Optim.jl? Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SciML/Optimization.jl#1016 · Opened Sep 15, 2025
Remove ModelingToolkit and Symbolics as direct deps of subpackages Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#1015 · 1 comment · 3 reactions · Opened Sep 15, 2025
`__solve` interface support Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#1007 · Opened Sep 9, 2025
`no method matching (::Colon)(::Int64, ::Nothing)` when trying to solve a constrained problem with `Optimization.LBFGS` Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

SciML/Optimization.jl#958 · Opened Jul 28, 2025
Add ability to silence warnings for failure to converge Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

SciML/Optimization.jl#957 · Opened Jul 28, 2025
PreparationMismatchError when using ComponentArrays Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#954 · 2 comments · Opened Jul 25, 2025
OptimizationOptimJL fails to precompile (once in a blue moon) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#926 · 1 comment · Opened Jun 13, 2025
Methods overwritten in extensions Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#914 · 6 comments · Opened May 13, 2025
Specialised state saving interface Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

SciML/Optimization.jl#909 · Opened May 2, 2025
Add routines for automatic transformation of parameters Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

SciML/Optimization.jl#908 · 1 comment · 1 reaction · Opened May 2, 2025
Bounded Adam solver (at least box constraints) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/Optimization.jl#886 · 1 reaction · Opened Mar 18, 2025
AD error when using Optimization generated grad function Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#883 · 2 comments · Opened Mar 14, 2025
Separate callbacks for each run in multistart optimization? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

SciML/Optimization.jl#876 · Opened Jan 23, 2025
Make `AutoSymbolics` and `AutoModelingToolkit` different backends Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

SciML/Optimization.jl#967 · Opened Jan 23, 2025
automatically generated lagrangian allocates Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SciML/Optimization.jl#968 · 8 comments · 1 reaction · Opened Jan 22, 2025
Minibatching through`DataLoader` with `OptimisationOptimJL.AbstractOptimizer` is broken Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/Optimization.jl#873 · Opened Jan 16, 2025
Add Reactant support Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/Optimization.jl#969 · 10 comments · 1 reaction · Opened Jan 9, 2025
Callback function cannot change the state of the optimization Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

SciML/Optimization.jl#866 · 2 comments · Opened Dec 24, 2024
A warning is issued on calling second-order optimizers with explicit hvp Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SciML/Optimization.jl#864 · 1 comment · Opened Dec 12, 2024
Sign of objective and gradient in OptimizationState is inconsistent Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#858 · Opened Nov 29, 2024
Wrapping cobyla from PRIMA.jl seems to handle constraints incorrectly Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#854 · 2 comments · Opened Nov 12, 2024
Choice of second-order AD and warnings Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

SciML/Optimization.jl#970 · 4 comments · 6 reactions · Opened Nov 12, 2024
[Docs] OptimizationFunction is-in-place parameter unclear Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#853 · 3 comments · Opened Nov 10, 2024
OptimizationFunction{false} breaks with AutoForwardDiff Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/Optimization.jl#852 · 1 comment · Opened Nov 10, 2024
Can OptimizationMOI use the common `maxiters` interface? Open

question

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/Optimization.jl#844 · 5 comments · Opened Oct 21, 2024
Use public SparseMatrixColorings API Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

SciML/Optimization.jl#971 · 1 reaction · Opened Oct 3, 2024

SciML/Optimization.jl

Get new issues in your inbox