# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=66

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**Page:** 67

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## [Julia compiler v.s. Julia GPU compiler](https://discourse.julialang.org/t/julia-compiler-v-s-julia-gpu-compiler/123951)

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**Author:** [@huiyuxie](https://discourse.julialang.org/u/huiyuxie)\
**Replies:** 4\
**Last updated:** [December 19, 2024, 1:29am UTC](https://discourse.julialang.org/t/julia-compiler-v-s-julia-gpu-compiler/123951 "2024-12-19T01:29:10Z")

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I’m currently developing a package to provide CUDA.jl support for solving hyperbolic PDEs on GPUs. I recently completed some coarse timing tests on the core acceleration parts of the solvers using a script similar to thi…

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## [Jump model SCS Optimizer](https://discourse.julialang.org/t/jump-model-scs-optimizer/123946)

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**Author:** [@zhenweilin](https://discourse.julialang.org/u/zhenweilin)\
**Replies:** 3\
**Last updated:** [December 19, 2024, 12:19am UTC](https://discourse.julialang.org/t/jump-model-scs-optimizer/123946 "2024-12-19T00:19:49Z")

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Hello, julia community. Recently, I aim to solve a large scale optimization problem, which contains 10M exp cone. When I try to model it by using JUMP, it is too slow. @constraint(jump\_model, con\[i=1:m\], \[x\[m\*n + 2\*i - …

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## [How to \`combine\` row vectors](https://discourse.julialang.org/t/how-to-combine-row-vectors/123940)

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**Author:** [@alex-s-gardner](https://discourse.julialang.org/u/alex-s-gardner)\
**Replies:** 5\
**Last updated:** [December 18, 2024, 9:24pm UTC](https://discourse.julialang.org/t/how-to-combine-row-vectors/123940 "2024-12-18T21:24:58Z")

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Hi All, Just wondering how I can apply a function to rows containing vectors when doing a groupby → combine: using DataFrames df = DataFrame(group = \["A", "A", "B", "B"\], v1 = \[ \[1, 2\], \[3, 4\], \[5, 6\], \[7, 8\] \], v2 = \[…

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## [Too many nonzeroes for NLP in JuMP and Examodels](https://discourse.julialang.org/t/too-many-nonzeroes-for-nlp-in-jump-and-examodels/123901)

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**Author:** [@KSepetanc](https://discourse.julialang.org/u/KSepetanc)\
**Replies:** 8\
**Last updated:** [December 18, 2024, 7:53pm UTC](https://discourse.julialang.org/t/too-many-nonzeroes-for-nlp-in-jump-and-examodels/123901 "2024-12-18T19:53:07Z")

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Creating a topic as suggested by @odow and mentioned in topic. The issue is that JuMP creates Jacobian and Hessian matrices with nonzeroes for derivatives that are fixed zero. Consider the following two example constra…

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## [Help reviewing PowerModels pull request wanted (PSSE)](https://discourse.julialang.org/t/help-reviewing-powermodels-pull-request-wanted-psse/123958)

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**Author:** [@KSepetanc](https://discourse.julialang.org/u/KSepetanc)\
**Replies:** 2\
**Last updated:** [December 18, 2024, 7:24pm UTC](https://discourse.julialang.org/t/help-reviewing-powermodels-pull-request-wanted-psse/123958 "2024-12-18T19:24:57Z")

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PowerModels currently remarks all load buses to generation buses if there is active generator located at the bus. That is different from the behavior that the PSSE does for the same raw file. As observed by my self, the …

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## [Alert! error when slicing](https://discourse.julialang.org/t/alert-error-when-slicing/123860)

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**Author:** [@govindanupam](https://discourse.julialang.org/u/govindanupam)\
**Replies:** 8\
**Last updated:** [December 18, 2024, 3:21pm UTC](https://discourse.julialang.org/t/alert-error-when-slicing/123860 "2024-12-18T15:21:24Z")

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My intension was to do Slicing an 3d object which is inside the stl file. Please help with below code using FileIO using GeometryBasics using GLMakie rotate\_x(point::GeometryBasics.Point{3, Float32}, angle\_deg::Float…

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## [Domains with callable parameters](https://discourse.julialang.org/t/domains-with-callable-parameters/123816)

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**Author:** [@jmaedler](https://discourse.julialang.org/u/jmaedler)\
**Replies:** 2\
**Last updated:** [December 18, 2024, 1:53pm UTC](https://discourse.julialang.org/t/domains-with-callable-parameters/123816 "2024-12-18T13:53:30Z")

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Hi folks, I am currently trying to define Domains with property data functions for the purpose of process simulation in ModelingToolkit.jl. To get started, I took the hydraulic example from the Domains doc page and modi…

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## [BifurcationKit: Duffing Equation: Time-Harmonic: Single Harmonic](https://discourse.julialang.org/t/bifurcationkit-duffing-equation-time-harmonic-single-harmonic/123937)

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**Author:** [@Domenico\_Lahaye](https://discourse.julialang.org/u/Domenico_Lahaye)\
**Replies:** 1\
**Last updated:** [December 17, 2024, 10:53pm UTC](https://discourse.julialang.org/t/bifurcationkit-duffing-equation-time-harmonic-single-harmonic/123937 "2024-12-17T22:53:05Z")

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Amazing how easy this was! Apologies for the rusty documentation (in progress). """ input: x: x\[1\] and x\[2\] amplitude of cos and sin mode of single harmonic anzats input: p: angular frequency of the driving excitation…

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## [BifurcationKit.jl: Example-1: Method Error](https://discourse.julialang.org/t/bifurcationkit-jl-example-1-method-error/123936)

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**Author:** [@Domenico\_Lahaye](https://discourse.julialang.org/u/Domenico_Lahaye)\
**Replies:** 3\
**Last updated:** [December 17, 2024, 9:06pm UTC](https://discourse.julialang.org/t/bifurcationkit-jl-example-1-method-error/123936 "2024-12-17T21:06:59Z")

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Very naively (and after a long day) installing BifurcationKit.jl and trying Example-1 F(x, p) = @. p\[1\] + x - x^3/3 prob = BifurcationProblem(F, \[-2.\], \[-1.\], 1; record\_from\_solution = (x,p; k...) -\> x\[1\]) I get Metho…

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## [How to use WarpedView to interpolate a 3D image](https://discourse.julialang.org/t/how-to-use-warpedview-to-interpolate-a-3d-image/123903)

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**Author:** [@buffon](https://discourse.julialang.org/u/buffon)\
**Replies:** 5\
**Last updated:** [December 17, 2024, 6:38pm UTC](https://discourse.julialang.org/t/how-to-use-warpedview-to-interpolate-a-3d-image/123903 "2024-12-17T18:38:39Z")

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I’m referring to the WarpedView function from ImageTransformations.jl: ImageTransformations.jl · ImageTransformations. I can use imresize to interpolate a 3D image naively like: imresize(image, ratio=(1,1,z\_res/xy\_res)),…

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## [PlotlyJS error when plotting in Emacs running in WSL](https://discourse.julialang.org/t/plotlyjs-error-when-plotting-in-emacs-running-in-wsl/123685)

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**Author:** [@PetrKryslUCSD](https://discourse.julialang.org/u/PetrKryslUCSD)\
**Replies:** 0\
**Last updated:** [December 11, 2024, 4:00am UTC](https://discourse.julialang.org/t/plotlyjs-error-when-plotting-in-emacs-running-in-wsl/123685 "2024-12-11T04:00:01Z")

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Is this a known issue? ERROR: IOError: connect: connection refused (ECONNREFUSED) Stacktrace: \[1\] wait\_connected @ /snap/julia/113/share/julia/stdlib/v1.11/Sockets/src/Sockets.jl:528 \[2\] connect @ /snap/juli…

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## [GPU kernel does not scale properly with data](https://discourse.julialang.org/t/gpu-kernel-does-not-scale-properly-with-data/123863)

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**Author:** [@Giorgos\_Vretinaris](https://discourse.julialang.org/u/Giorgos_Vretinaris)\
**Replies:** 10\
**Last updated:** [December 17, 2024, 8:40am UTC](https://discourse.julialang.org/t/gpu-kernel-does-not-scale-properly-with-data/123863 "2024-12-17T08:40:56Z")

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Hello, I am trying to write a ODE solver on the GPU. I am solving the same simple ODE but for different initial data. I tried the EnsembleGPUArray option from DiffEqGPU.jl but it was quite slow. The kernel I wrote is re…

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## [Updating to MosekToolsv0.15.3 breaks many JuMP SDP codes](https://discourse.julialang.org/t/updating-to-mosektoolsv0-15-3-breaks-many-jump-sdp-codes/123893)

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**Author:** [@Shuvomoy\_Das\_Gupta](https://discourse.julialang.org/u/Shuvomoy_Das_Gupta)\
**Replies:** 5\
**Last updated:** [December 17, 2024, 1:09pm UTC](https://discourse.julialang.org/t/updating-to-mosektoolsv0-15-3-breaks-many-jump-sdp-codes/123893 "2024-12-17T13:09:37Z")

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I updated MosekTools to v0.15.3 today (from 0.15.1) and it breaks my existing SDP codes with the following error when calling optimize!: MSK\_RES\_ERR\_SYM\_MAT\_INVALID\_ROW\_INDEX): The row index 11 specified for sparse symm…

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## [GSL for Differential Equations](https://discourse.julialang.org/t/gsl-for-differential-equations/123920)

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**Author:** [@Cardoso\_Ribeiro](https://discourse.julialang.org/u/Cardoso_Ribeiro)\
**Replies:** 2\
**Last updated:** [December 17, 2024, 12:48pm UTC](https://discourse.julialang.org/t/gsl-for-differential-equations/123920 "2024-12-17T12:48:16Z")

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Can anyone to use the GNU Scientific Library (GSL.jl) for solving differential equations in Julia? Can you give an example? I know C language.

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## [Debugging a JuMP model's infeasibility](https://discourse.julialang.org/t/debugging-a-jump-models-infeasibility/123895)

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**Author:** [@BMI\_OR](https://discourse.julialang.org/u/BMI_OR)\
**Replies:** 2\
**Last updated:** [December 17, 2024, 11:20am UTC](https://discourse.julialang.org/t/debugging-a-jump-models-infeasibility/123895 "2024-12-17T11:20:31Z")

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I have implemented a Benders decomposition algorithm in which the Benders subproblem (BSP) is solved using column generation. The BSP is a conventional linear JuMP model and I use Gurobi as a solver. After some iterati…

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## [Bonito: serving an HTML page](https://discourse.julialang.org/t/bonito-serving-an-html-page/123872)

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**Author:** [@cstjean](https://discourse.julialang.org/u/cstjean)\
**Replies:** 4\
**Last updated:** [December 17, 2024, 10:05am UTC](https://discourse.julialang.org/t/bonito-serving-an-html-page/123872 "2024-12-17T10:05:14Z")

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In Bonito.jl, how should I serve an HTML file? I would have expected server = Server("0.0.0.0", 8080) route!(server, "/" =\> title\_page) route!(server, "/documentation" =\> HTMLPage("/local/path/to/my/page.htm…

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## [New Domain - what are people using Julia for in Hardware?](https://discourse.julialang.org/t/new-domain-what-are-people-using-julia-for-in-hardware/33042)

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**Author:** [@tro3](https://discourse.julialang.org/u/tro3)\
**Replies:** 34\
**Last updated:** [December 17, 2024, 10:01am UTC](https://discourse.julialang.org/t/new-domain-what-are-people-using-julia-for-in-hardware/33042 "2024-12-17T10:01:27Z")

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@anon92994695 has driven a new domain for Discourse covering all things hardware… the Maker domain. Thanks!! With one of my hats, I am a hardware guy very new to Julia, and I am curious what people are using Julia for…

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## [Is it possible to resume a Gurobi optimization model after a timeout?](https://discourse.julialang.org/t/is-it-possible-to-resume-a-gurobi-optimization-model-after-a-timeout/123686)

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**Author:** [@nsajko](https://discourse.julialang.org/u/nsajko)\
**Replies:** 3\
**Last updated:** [December 17, 2024, 5:10am UTC](https://discourse.julialang.org/t/is-it-possible-to-resume-a-gurobi-optimization-model-after-a-timeout/123686 "2024-12-17T05:10:25Z")

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There’s an optimization-type contest, I’m participating using MathOptInterface.jl and Gurobi.jl. Seeing as I don’t feel I’ll be able to improve the program formulation any more, I think the only way to further improve my…

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## [Julia Tools for Large-Scale SMT/SAT problems?](https://discourse.julialang.org/t/julia-tools-for-large-scale-smt-sat-problems/123744)

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**Author:** [@Fe-r-oz](https://discourse.julialang.org/u/Fe-r-oz)\
**Replies:** 1\
**Last updated:** [December 16, 2024, 9:17pm UTC](https://discourse.julialang.org/t/julia-tools-for-large-scale-smt-sat-problems/123744 "2024-12-16T21:17:21Z")

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Hi, Everyone, I’m exploring options for working with SAT/SMT solvers in Julia. So far, I’ve come across Z3.jl and Satisfiability.jl, and I really appreciate the JuMP-like idiomatic interface of Satisfiability.jl, Are th…

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## [Makie: adding more ticks to log axis](https://discourse.julialang.org/t/makie-adding-more-ticks-to-log-axis/123878)

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**Author:** [@aris](https://discourse.julialang.org/u/aris)\
**Replies:** 9\
**Last updated:** [December 16, 2024, 3:47pm UTC](https://discourse.julialang.org/t/makie-adding-more-ticks-to-log-axis/123878 "2024-12-16T15:47:48Z")

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Hello everyone, In Makie, what would be the simplest way to add more ticks to the following axis: Using xticks = collect(logrange(1e-5, 1e1, 7)) puts the ticks where I want them to be, but they’re displayed with deci…

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## [Crossing conditions in ModelingToolkit @mtkmodel macro](https://discourse.julialang.org/t/crossing-conditions-in-modelingtoolkit-mtkmodel-macro/123780)

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**Author:** [@nurban](https://discourse.julialang.org/u/nurban)\
**Replies:** 1\
**Last updated:** [December 16, 2024, 3:30pm UTC](https://discourse.julialang.org/t/crossing-conditions-in-modelingtoolkit-mtkmodel-macro/123780 "2024-12-16T15:30:12Z")

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I want to add a continuous event trigger to my @mtkmodel, with a downcrossing condition. Without the crossing direction condition, I think this should look like @mtkmodel odesys begin @variables begin X(t) …

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## [Anyone has an implementation of generic boosting?](https://discourse.julialang.org/t/anyone-has-an-implementation-of-generic-boosting/54729)

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**Author:** [@Tomas\_Pevny](https://discourse.julialang.org/u/Tomas_Pevny)\
**Replies:** 7\
**Last updated:** [December 16, 2024, 1:34pm UTC](https://discourse.julialang.org/t/anyone-has-an-implementation-of-generic-boosting/54729 "2024-12-16T13:34:30Z")

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Dear All, I would like to ask, as the title suggest, if anyone has a general implementation of boosting algorithm? I did some search and found that it is usually tightly coupled with a base learners being decision trees…

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## [BifurcationKit: Mesh adaptation error](https://discourse.julialang.org/t/bifurcationkit-mesh-adaptation-error/123876)

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**Author:** [@mmplac14](https://discourse.julialang.org/u/mmplac14)\
**Replies:** 1\
**Last updated:** [December 16, 2024, 11:41am UTC](https://discourse.julialang.org/t/bifurcationkit-mesh-adaptation-error/123876 "2024-12-16T11:41:37Z")

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Hi, I am running a Periodic Orbit continuation but it is failing with this error: ┌ Error: \[Mesh-adaptation\]. The mesh is non monotonic! Please report the error to the website of BifurcationKit.jl └ @ BifurcationKit ~…

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## [BifurcationKit: record\_from\_solution Periodic Orbits](https://discourse.julialang.org/t/bifurcationkit-record-from-solution-periodic-orbits/123814)

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**Author:** [@mmplac14](https://discourse.julialang.org/u/mmplac14)\
**Replies:** 6\
**Last updated:** [December 16, 2024, 10:35am UTC](https://discourse.julialang.org/t/bifurcationkit-record-from-solution-periodic-orbits/123814 "2024-12-16T10:35:40Z")

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Hi! I am using BifurcationKit to compute the periodic orbits of the Jansen-Rit model from the first Hopf Point. I seem to be having issues computing them for y1 - y2. I am using record\_from\_solution to compute them for …

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## [ModelingToolkit: (Transport) delay? Example: Inflow to one water reservoir is a delayed outflow from another](https://discourse.julialang.org/t/modelingtoolkit-transport-delay-example-inflow-to-one-water-reservoir-is-a-delayed-outflow-from-another/122654)

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**Author:** [@zdenek\_hurak](https://discourse.julialang.org/u/zdenek_hurak)\
**Replies:** 6\
**Last updated:** [December 16, 2024, 9:33am UTC](https://discourse.julialang.org/t/modelingtoolkit-transport-delay-example-inflow-to-one-water-reservoir-is-a-delayed-outflow-from-another/122654 "2024-12-16T09:33:32Z")

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Referring to @baggepinnen 's past response to the question about the possibility to model a delay using ModelingToolkit, I was just wondering if there has been any progress in this direction. Something along the line of d…

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## [Confusion about how to use Gridap.jl Dirichlet boundary specification](https://discourse.julialang.org/t/confusion-about-how-to-use-gridap-jl-dirichlet-boundary-specification/123861)

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**Author:** [@TheHedgehog2000](https://discourse.julialang.org/u/TheHedgehog2000)\
**Replies:** 2\
**Last updated:** [December 16, 2024, 4:04am UTC](https://discourse.julialang.org/t/confusion-about-how-to-use-gridap-jl-dirichlet-boundary-specification/123861 "2024-12-16T04:04:32Z")

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I am trying to numerically solve the diffusion equation using the Gridap.jl finite element method package. Specifically the problem is radially symmetric diffusion in 3D of a substance with initial concentration C(a \< r \<…

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## [GMT: add lines to a map](https://discourse.julialang.org/t/gmt-add-lines-to-a-map/123852)

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**Author:** [@George9000](https://discourse.julialang.org/u/George9000)\
**Replies:** 2\
**Last updated:** [December 16, 2024, 12:36am UTC](https://discourse.julialang.org/t/gmt-add-lines-to-a-map/123852 "2024-12-16T00:36:02Z")

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After plotting a map region with coast, I’d like to add a series of lines. I’m unable to correctly specify the arguments for the lines! call. I’ve also tried giving the x and y as separate \[long\] and \[lat\] vectors to lin…

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## [Idiomatic way to overplot on subplots](https://discourse.julialang.org/t/idiomatic-way-to-overplot-on-subplots/123844)

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**Author:** [@mekapses](https://discourse.julialang.org/u/mekapses)\
**Replies:** 3\
**Last updated:** [December 16, 2024, 12:01am UTC](https://discourse.julialang.org/t/idiomatic-way-to-overplot-on-subplots/123844 "2024-12-16T00:01:30Z")

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If I want to create 10 histograms of 10 samples, and overplot a predicted curve on each one, and then plot all 10 subplots in a layout, what’s the most Julianic way of doing this? I’ve been using nested loops and a colle…

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## [Unable to find \`fit\` in \`CatBoost.MLJCatBoostInterface](https://discourse.julialang.org/t/unable-to-find-fit-in-catboost-mljcatboostinterface/123818)

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**Author:** [@julien\_goo](https://discourse.julialang.org/u/julien_goo)\
**Replies:** 4\
**Last updated:** [December 15, 2024, 9:53pm UTC](https://discourse.julialang.org/t/unable-to-find-fit-in-catboost-mljcatboostinterface/123818 "2024-12-15T21:53:32Z")

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Hi! I have developped a ML workflow using MLJ with some data preparation, feature engineer, cross-val and tuning (evaluate! function). Up to now, I used LightGBM (it worked fine), but since I have categorical variables,…

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## [Can I move an array asynchronously from main program to CUDA?](https://discourse.julialang.org/t/can-i-move-an-array-asynchronously-from-main-program-to-cuda/119976)

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**Author:** [@joaquimg](https://discourse.julialang.org/u/joaquimg)\
**Replies:** 7\
**Last updated:** [December 15, 2024, 8:37pm UTC](https://discourse.julialang.org/t/can-i-move-an-array-asynchronously-from-main-program-to-cuda/119976 "2024-12-15T20:37:49Z")

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I have an application that would benefit from passing an array asynchronously from the main program to my CUDA GPU while I am doing other computations on my CPU. The GPU would only be working on receiving the array. Als…

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