# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=34

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**Page:** 35

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## [Keeping \`textlabel\`s at a fixed size in Makie](https://discourse.julialang.org/t/keeping-textlabel-s-at-a-fixed-size-in-makie/130435)

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**Author:** [@gdalle](https://discourse.julialang.org/u/gdalle)\
**Replies:** 8\
**Last updated:** [July 8, 2025, 1:12pm UTC](https://discourse.julialang.org/t/keeping-textlabel-s-at-a-fixed-size-in-makie/130435 "2025-07-08T13:12:16Z")

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I’m using Makie.jl to visualize pathfinding in mazes, like in the image below. The maze itself is rendered with Makie.image and the agents on top of it with Makie.textlabel, using a custom background shape. My issue…

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## [How do I extract the maximum likelihood point estimates from a Turing output chain](https://discourse.julialang.org/t/how-do-i-extract-the-maximum-likelihood-point-estimates-from-a-turing-output-chain/130537)

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**Author:** [@Torkel](https://discourse.julialang.org/u/Torkel)\
**Replies:** 9\
**Last updated:** [July 8, 2025, 9:20am UTC](https://discourse.julialang.org/t/how-do-i-extract-the-maximum-likelihood-point-estimates-from-a-turing-output-chain/130537 "2025-07-08T09:20:54Z")

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I have a Turing output computed something like model = make\_model(data, ps) chain = sample(model, NUTS(), MCMCSerial(), n\_steps, n\_chains; progress = false); plot(chain) How do I extract the maximum likelihood point…

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## [A Primal-Dual Global Optimization approach on the Cutting Stock Problem](https://discourse.julialang.org/t/a-primal-dual-global-optimization-approach-on-the-cutting-stock-problem/129686)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 18\
**Last updated:** [July 7, 2025, 10:38pm UTC](https://discourse.julialang.org/t/a-primal-dual-global-optimization-approach-on-the-cutting-stock-problem/129686 "2025-07-07T22:38:49Z")

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This doc reads a bit lengthy, because it uses complex data structures (maybe for visualization purposes). Therein it uses economic interpretation, which is hard to understand for me. Therefore, I explicitly wrote the…

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## [\`\`\`julia -t\`\`\` Does not respect the number of threads](https://discourse.julialang.org/t/julia-t-does-not-respect-the-number-of-threads/130533)

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**Author:** [@Dario-Rosa85](https://discourse.julialang.org/u/Dario-Rosa85)\
**Replies:** 13\
**Last updated:** [July 7, 2025, 3:49pm UTC](https://discourse.julialang.org/t/julia-t-does-not-respect-the-number-of-threads/130533 "2025-07-07T15:49:54Z")

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Hi all, I am running some large-scale multithreading numerical code on a couple of different servers. In one of them (and only in one) I am seeing that the machine does not obey the restriction on the number of threads …

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## [Memory corruption error in Julia: "Incorrect checksum for freed object" when running a JuMP/Gurobi model](https://discourse.julialang.org/t/memory-corruption-error-in-julia-incorrect-checksum-for-freed-object-when-running-a-jump-gurobi-model/130522)

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**Author:** [@leonie25](https://discourse.julialang.org/u/leonie25)\
**Replies:** 5\
**Last updated:** [July 7, 2025, 5:15am UTC](https://discourse.julialang.org/t/memory-corruption-error-in-julia-incorrect-checksum-for-freed-object-when-running-a-jump-gurobi-model/130522 "2025-07-07T05:15:04Z")

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I am encountering a memory corruption error when running my optimization model using JuMP with the Gurobi solver in Julia. The error message is as follows: julia(30498,0x2012a5f00) malloc: Incorrect checksum for freed o…

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## [Solving a large scale MILP problem with cplex takes long time](https://discourse.julialang.org/t/solving-a-large-scale-milp-problem-with-cplex-takes-long-time/130491)

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**Author:** [@JOHN1](https://discourse.julialang.org/u/JOHN1)\
**Replies:** 3\
**Last updated:** [July 6, 2025, 9:24pm UTC](https://discourse.julialang.org/t/solving-a-large-scale-milp-problem-with-cplex-takes-long-time/130491 "2025-07-06T21:24:44Z")

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i am solving a large scale MILP problem with cplex, it takes too much time and cannot obtain the sollution, does it means that cplex is not suitable for this large scale MILP problem? what can i do to acceralate the solv…

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## [Gurobi gets stuck after "Loaded MIP start from previous solve"](https://discourse.julialang.org/t/gurobi-gets-stuck-after-loaded-mip-start-from-previous-solve/130406)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 13\
**Last updated:** [July 6, 2025, 5:34am UTC](https://discourse.julialang.org/t/gurobi-gets-stuck-after-loaded-mip-start-from-previous-solve/130406 "2025-07-06T05:34:33Z")

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I’m writing the Benders’ decomposition for an MIP and encountering a very weird behavior of Gurobi. There is an MIP that I need to modify its obj and repeatedly re-solve (Gurobi can (according to its Logging) Loaded MIP…

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## [How to get dipole moments for a molecule in Atomic Orbital basis within the Julia ecosystem?](https://discourse.julialang.org/t/how-to-get-dipole-moments-for-a-molecule-in-atomic-orbital-basis-within-the-julia-ecosystem/130436)

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**Author:** [@Uranium238](https://discourse.julialang.org/u/Uranium238)\
**Replies:** 1\
**Last updated:** [July 6, 2025, 6:33am UTC](https://discourse.julialang.org/t/how-to-get-dipole-moments-for-a-molecule-in-atomic-orbital-basis-within-the-julia-ecosystem/130436 "2025-07-06T06:33:33Z")

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I am trying to develop an implementation of a certain electronic structure method within Julia aimed at modelling strong light-matter interactions. The method is closely related to the widely popular Hartree-Fock method.…

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## [NeuralPDE on GPU throws NaNs when I use a source term elevated to some power](https://discourse.julialang.org/t/neuralpde-on-gpu-throws-nans-when-i-use-a-source-term-elevated-to-some-power/114048)

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**Author:** [@PetrosStefanou](https://discourse.julialang.org/u/PetrosStefanou)\
**Replies:** 2\
**Last updated:** [July 6, 2025, 1:20am UTC](https://discourse.julialang.org/t/neuralpde-on-gpu-throws-nans-when-i-use-a-source-term-elevated-to-some-power/114048 "2025-07-06T01:20:00Z")

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Hello to everyone, I have a problem with NeuralPDE when trying to use the GPU on the following problem using NeuralPDE using Optimization, OptimizationOptimJL, OptimizationOptimisers import ModelingToolkit: Interval us…

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## [Study neutron star interior using DFTK.jl](https://discourse.julialang.org/t/study-neutron-star-interior-using-dftk-jl/130487)

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**Author:** [@raman\_kumar](https://discourse.julialang.org/u/raman_kumar)\
**Replies:** 1\
**Last updated:** [July 5, 2025, 1:27pm UTC](https://discourse.julialang.org/t/study-neutron-star-interior-using-dftk-jl/130487 "2025-07-05T13:27:15Z")

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I want to study nuclear matter within neutron stars and how nuclei move through the super-fluid neutron medium within neutron star crusts. I would like to study crucial details like effective mass, dissipative mechanisms…

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## [Reusing variables with Zygote?](https://discourse.julialang.org/t/reusing-variables-with-zygote/130498)

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**Author:** [@MatPeron](https://discourse.julialang.org/u/MatPeron)\
**Replies:** 0\
**Last updated:** [July 5, 2025, 5:58pm UTC](https://discourse.julialang.org/t/reusing-variables-with-zygote/130498 "2025-07-05T17:58:37Z")

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I’ve written a module to perform some physics computations, and have been trying to make it autodifferentiable so I can run it with stuff like Hamilonian Monte Carlo. The computation is specifically about perturbation th…

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## [Duals and constraint names for \`PowerModels\` and \`InfrastructureModels\`](https://discourse.julialang.org/t/duals-and-constraint-names-for-powermodels-and-infrastructuremodels/130311)

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**Author:** [@jacob-roth](https://discourse.julialang.org/u/jacob-roth)\
**Replies:** 5\
**Last updated:** [July 5, 2025, 4:32pm UTC](https://discourse.julialang.org/t/duals-and-constraint-names-for-powermodels-and-infrastructuremodels/130311 "2025-07-05T16:32:44Z")

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I would like to (1) use PowerModels to construct a base DCOPF model and (2) make some modifications to the model (such as allowing load shed by adding new variables and modifying cosntraints). Beginning with an instance …

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## [New ROOT.jl release, v0.3.3](https://discourse.julialang.org/t/new-root-jl-release-v0-3-3/130409)

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**Author:** [@grasph](https://discourse.julialang.org/u/grasph)\
**Replies:** 3\
**Last updated:** [July 4, 2025, 12:34pm UTC](https://discourse.julialang.org/t/new-root-jl-release-v0-3-3/130409 "2025-07-04T12:34:35Z")

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Hello, I am glad to announce you the first ROOT.jl release that uses the Julia package manager to automatically install the ROOT binaries (aka \_jll package). The release includes now by default the full set of ROOT cla…

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## [Differentiate through SecondOrderCone](https://discourse.julialang.org/t/differentiate-through-secondordercone/130365)

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**Author:** [@gustave\_Robichon](https://discourse.julialang.org/u/gustave_Robichon)\
**Replies:** 8\
**Last updated:** [July 4, 2025, 10:45am UTC](https://discourse.julialang.org/t/differentiate-through-secondordercone/130365 "2025-07-04T10:45:14Z")

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Hello :slight\_smile: I want to differentiate an Optimization Program. I use DiffOpt for this, which is built over JuMP. I have some data, that I want to fit by a function of a few parameters. This can be done with diffe…

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## [Plot recipes with nested subplots](https://discourse.julialang.org/t/plot-recipes-with-nested-subplots/130465)

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**Author:** [@polhager](https://discourse.julialang.org/u/polhager)\
**Replies:** 0\
**Last updated:** [July 4, 2025, 8:20am UTC](https://discourse.julialang.org/t/plot-recipes-with-nested-subplots/130465 "2025-07-04T08:20:08Z")

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Hi. I have a custom data type which, after doing some calculations on, I would like to plot in a specific way. A basic example of the setup is this: struct Data x y1s y2s end x = 1:10 y1s = \[\[rand(10) for \_…

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## [Gurobi reports OPTIMAL on a QP having a huge MaxVio](https://discourse.julialang.org/t/gurobi-reports-optimal-on-a-qp-having-a-huge-maxvio/129645)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 8\
**Last updated:** [July 4, 2025, 1:08am UTC](https://discourse.julialang.org/t/gurobi-reports-optimal-on-a-qp-having-a-huge-maxvio/129645 "2025-07-04T01:08:16Z")

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julia\> JuMP.unset\_silent(outer) Set parameter OutputFlag to value 1 julia\> JuMP.optimize!(outer) Gurobi Optimizer version 12.0.2 build v12.0.2rc0 (win64 - Windows 11.0 (26100.2)) CPU model: 11th Gen Intel(R) Core(TM) i…

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## [On the relationship between \`JuMP\` and \`MathOptInterface\`](https://discourse.julialang.org/t/on-the-relationship-between-jump-and-mathoptinterface/130329)

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**Author:** [@WuSiren](https://discourse.julialang.org/u/WuSiren)\
**Replies:** 11\
**Last updated:** [July 3, 2025, 6:12pm UTC](https://discourse.julialang.org/t/on-the-relationship-between-jump-and-mathoptinterface/130329 "2025-07-03T18:12:08Z")

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JuMP is essentially a more user-friendly wrapper for MathOptInterface and it can be completely bypassed or replaced by MathOptInterface, right?

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## [How to specify the nonlinear solver algorithm for Shooting and MultipleShooting BVP solvers](https://discourse.julialang.org/t/how-to-specify-the-nonlinear-solver-algorithm-for-shooting-and-multipleshooting-bvp-solvers/130392)

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**Author:** [@ThermionicsGuy](https://discourse.julialang.org/u/ThermionicsGuy)\
**Replies:** 5\
**Last updated:** [July 3, 2025, 4:40pm UTC](https://discourse.julialang.org/t/how-to-specify-the-nonlinear-solver-algorithm-for-shooting-and-multipleshooting-bvp-solvers/130392 "2025-07-03T16:40:05Z")

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SciML’s documentation suggests that the boundary value problem solvers Shooting() and MultipleShooting() should be able to use any of the NonlinearSolve.jl algorithms, but I haven’t been able to find a way to specify the…

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## [Significant difference in SCIP solving time between JuMP and Rust (\`russcip\`)](https://discourse.julialang.org/t/significant-difference-in-scip-solving-time-between-jump-and-rust-russcip/130455)

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**Author:** [@ShugarSkull](https://discourse.julialang.org/u/ShugarSkull)\
**Replies:** 2\
**Last updated:** [July 3, 2025, 3:52pm UTC](https://discourse.julialang.org/t/significant-difference-in-scip-solving-time-between-jump-and-rust-russcip/130455 "2025-07-03T15:52:32Z")

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Hi all, I’ve noticed a large difference in solving time when using SCIP through JuMP in Julia versus using the russcip crate in Rust, and I’m hoping someone can help explain why. :puzzle\_piece: Context I’m solving a MI…

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## [Efficient vectorization in Turing.jl](https://discourse.julialang.org/t/efficient-vectorization-in-turing-jl/130390)

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**Author:** [@contejuz](https://discourse.julialang.org/u/contejuz)\
**Replies:** 1\
**Last updated:** [July 3, 2025, 3:25pm UTC](https://discourse.julialang.org/t/efficient-vectorization-in-turing-jl/130390 "2025-07-03T15:25:38Z")

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I have a fairly simple hierarchical model where I have 2 population parameters a,b. b is also an individual level parameters such that the b\_i are sampled from a distribution parametrized by b. a and b\_i govern the shape…

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## [Stochastic differential equations: how to improve the exactness of the solution?](https://discourse.julialang.org/t/stochastic-differential-equations-how-to-improve-the-exactness-of-the-solution/130379)

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**Author:** [@Marco\_Masi](https://discourse.julialang.org/u/Marco_Masi)\
**Replies:** 6\
**Last updated:** [July 3, 2025, 12:27pm UTC](https://discourse.julialang.org/t/stochastic-differential-equations-how-to-improve-the-exactness-of-the-solution/130379 "2025-07-03T12:27:09Z")

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I’m trying to find out how to integrate stochastic differential equations. I would like to see how an ODE that I have already solved behaves when subjected to a noisy signal. I wrote the code below. I don’t know if it is…

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## [PlotlyJS update subplot traces in-place](https://discourse.julialang.org/t/plotlyjs-update-subplot-traces-in-place/130432)

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**Author:** [@rand5](https://discourse.julialang.org/u/rand5)\
**Replies:** 1\
**Last updated:** [July 2, 2025, 8:35pm UTC](https://discourse.julialang.org/t/plotlyjs-update-subplot-traces-in-place/130432 "2025-07-02T20:35:43Z")

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In PlotlyJS, I can update a trace in-place using react!() as mentioned in the docs: tr = scatter(;y=rand(5)) p = plot(tr) tr\[:y\] .= rand(5) react!(p,\[tr\],Layout()) However, I don’t see any information on how to do in-p…

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## [GLMakie: selecting points in log-log plot](https://discourse.julialang.org/t/glmakie-selecting-points-in-log-log-plot/130371)

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**Author:** [@aris](https://discourse.julialang.org/u/aris)\
**Replies:** 10\
**Last updated:** [July 2, 2025, 7:02pm UTC](https://discourse.julialang.org/t/glmakie-selecting-points-in-log-log-plot/130371 "2025-07-02T19:02:55Z")

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Hello everyone, I have a gui which involves a contour plot with log-log axes. The goal is to be able to select some points from within the plot by clicking on in. Everything works fine in the case of linear axes: ▶ MR…

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## [Issue with scoping rules of parameter (and variable) declaration in components (Catalyst vs ModelingToolkit)](https://discourse.julialang.org/t/issue-with-scoping-rules-of-parameter-and-variable-declaration-in-components-catalyst-vs-modelingtoolkit/130232)

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**Author:** [@Cedric\_Lhoussaine](https://discourse.julialang.org/u/Cedric_Lhoussaine)\
**Replies:** 8\
**Last updated:** [July 2, 2025, 3:19pm UTC](https://discourse.julialang.org/t/issue-with-scoping-rules-of-parameter-and-variable-declaration-in-components-catalyst-vs-modelingtoolkit/130232 "2025-07-02T15:19:18Z")

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Working with Catalyst v15.0.8 and ModelingToolkit v9.80.5, I found a strange and misleading behavior w.r.t. parameter declarations in reaction components: suppose I declare a parameter (k) in two different components (n…

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## [\[ANN\] StellarTracks.jl - Access and interpolate stellar tracks, isochrones](https://discourse.julialang.org/t/ann-stellartracks-jl-access-and-interpolate-stellar-tracks-isochrones/130388)

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**Author:** [@cgarling](https://discourse.julialang.org/u/cgarling)\
**Replies:** 0\
**Last updated:** [July 1, 2025, 8:00pm UTC](https://discourse.julialang.org/t/ann-stellartracks-jl-access-and-interpolate-stellar-tracks-isochrones/130388 "2025-07-01T20:00:54Z")

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I have registered and released StellarTracks.jl, which provides a uniform interface to stellar evolutionary tracks from PARSEC, MIST, and BaSTI. New tracks can be interpolated as a function of stellar initial mass and me…

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## [How to remake a SteadyStateProblem efficiently](https://discourse.julialang.org/t/how-to-remake-a-steadystateproblem-efficiently/130376)

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**Author:** [@Bart\_van\_de\_Lint](https://discourse.julialang.org/u/Bart_van_de_Lint)\
**Replies:** 2\
**Last updated:** [July 1, 2025, 6:11pm UTC](https://discourse.julialang.org/t/how-to-remake-a-steadystateproblem-efficiently/130376 "2025-07-01T18:11:28Z")

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I am trying to efficiently reinitialize a SteadyStateProblem, built from a ModelingToolkit System. steady\_prob = SteadyStateProblem(prob) steady\_prob = remake(steady\_prob; u0=new\_u0) But this doesn’t actually change th…

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## [MTK query when dealing with vector variables](https://discourse.julialang.org/t/mtk-query-when-dealing-with-vector-variables/130366)

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**Author:** [@Sushrut\_Deshpande](https://discourse.julialang.org/u/Sushrut_Deshpande)\
**Replies:** 3\
**Last updated:** [July 1, 2025, 5:23pm UTC](https://discourse.julialang.org/t/mtk-query-when-dealing-with-vector-variables/130366 "2025-07-01T17:23:06Z")

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Hello, When I run the following toy case I get the following problem: using ModelingToolkit, SteadyStateDiffEq @independent\_variables t function my\_fun(;name,N=100) vars = @variables begin x(t)\[1:N+1\], …

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## [Batched Hessian-Vector Product (on the GPU)](https://discourse.julialang.org/t/batched-hessian-vector-product-on-the-gpu/130372)

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**Author:** [@eblumen](https://discourse.julialang.org/u/eblumen)\
**Replies:** 0\
**Last updated:** [July 1, 2025, 2:30pm UTC](https://discourse.julialang.org/t/batched-hessian-vector-product-on-the-gpu/130372 "2025-07-01T14:30:38Z")

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Hello, I am trying to implement a sort of ‘batched’ HVP. Here’s the setup: consider some collection of particle positions x\_{i,\\alpha,\\beta,\\gamma} where i = 1,\\ldots, d is a coordinate index, and \\alpha,\\beta,\\gamma in…

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## [Unit Validation and Inspection with MTK - error in the documentation?](https://discourse.julialang.org/t/unit-validation-and-inspection-with-mtk-error-in-the-documentation/112145)

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**Author:** [@kraqbi](https://discourse.julialang.org/u/kraqbi)\
**Replies:** 3\
**Last updated:** [July 1, 2025, 2:10pm UTC](https://discourse.julialang.org/t/unit-validation-and-inspection-with-mtk-error-in-the-documentation/112145 "2025-07-01T14:10:34Z")

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Hello! This is my first post here, so please forgive me if I do not master all conventions yet. I plan to add units verification of my model using the available tools from ModelingToolkit. I was trying to reproduce th…

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## [NeuralIntegrator: Spiking neural network and synaptic plasticity in DifferentialEquations.jl](https://discourse.julialang.org/t/neuralintegrator-spiking-neural-network-and-synaptic-plasticity-in-differentialequations-jl/130295)

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**Author:** [@flmuk](https://discourse.julialang.org/u/flmuk)\
**Replies:** 1\
**Last updated:** [July 1, 2025, 8:09am UTC](https://discourse.julialang.org/t/neuralintegrator-spiking-neural-network-and-synaptic-plasticity-in-differentialequations-jl/130295 "2025-07-01T08:09:13Z")

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NeuralIntegrator: simulating spiking neural networks with discontinuities I work in the field of computational neuroscience and model spiking neural networks (SNNs) with different synaptic plasticity rules, i.e. rules o…

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