# Latest

**URL:** https://discourse.julialang.org/latest.md?page=106

[Latest](https://discourse.julialang.org/latest.md) · [Categories](https://discourse.julialang.org/categories.md) · [Tags](https://discourse.julialang.org/tags.md)

**Page:** 107

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## [What is the correct way to autodiff a simple CUDA kernel using Reactant.jl and Enzyme.jl](https://discourse.julialang.org/t/what-is-the-correct-way-to-autodiff-a-simple-cuda-kernel-using-reactant-jl-and-enzyme-jl/132572)

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**Author:** [@TiangeHuang-Cedric](https://discourse.julialang.org/u/TiangeHuang-Cedric)\
**Replies:** 20\
**Last updated:** [September 23, 2025, 7:58pm UTC](https://discourse.julialang.org/t/what-is-the-correct-way-to-autodiff-a-simple-cuda-kernel-using-reactant-jl-and-enzyme-jl/132572 "2025-09-23T19:58:25Z")

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I’m new to Reactant.jl and Enzyme.jl, and I want to use them to calculate the grad of a CUDA kernel. Here is my script: using Random, Reactant, CUDA, Test, Enzyme const ReactantCUDAExt = Base.get\_extension(Reactant, :R…

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## [Plugging DifferentiationInterface.jl into pytorch](https://discourse.julialang.org/t/plugging-differentiationinterface-jl-into-pytorch/132598)

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**Author:** [@mattsignorelli](https://discourse.julialang.org/u/mattsignorelli)\
**Replies:** 5\
**Last updated:** [September 23, 2025, 7:32pm UTC](https://discourse.julialang.org/t/plugging-differentiationinterface-jl-into-pytorch/132598 "2025-09-23T19:32:28Z")

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I preface this with saying that I really am not very experienced with both pytorch and juliatorch, and apologize for any misunderstandings that I have. We are developing a physics simulation ecosystem that can be differ…

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## [Skip Package Precompile](https://discourse.julialang.org/t/skip-package-precompile/132601)

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**Author:** [@andrewkc](https://discourse.julialang.org/u/andrewkc)\
**Replies:** 1\
**Last updated:** [September 23, 2025, 6:42pm UTC](https://discourse.julialang.org/t/skip-package-precompile/132601 "2025-09-23T18:42:56Z")

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I’m working on a cluster computer that has two nodes: a login node with low resources (memory, cpu) a compute node with no internet acess For this reason, it seems like the best workflow is to download packages on the…

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## [How to take derivative of complex functions like Weierstrass Elliptic function?](https://discourse.julialang.org/t/how-to-take-derivative-of-complex-functions-like-weierstrass-elliptic-function/132591)

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**Author:** [@MathJulia](https://discourse.julialang.org/u/MathJulia)\
**Replies:** 5\
**Last updated:** [September 23, 2025, 5:48pm UTC](https://discourse.julialang.org/t/how-to-take-derivative-of-complex-functions-like-weierstrass-elliptic-function/132591 "2025-09-23T17:48:34Z")

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I want to use Elliptic and modular functions as activation functions in neural networks. What packages should I use? I can’t install EllipticFunctions.jl because it returns error. How could I apply chain rule to optimiz…

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## [Ow, my eyes! Slight discourse theme changes that may have impacted your dark/light settings](https://discourse.julialang.org/t/ow-my-eyes-slight-discourse-theme-changes-that-may-have-impacted-your-dark-light-settings/131038)

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**Author:** [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Replies:** 8\
**Last updated:** [September 23, 2025, 5:02pm UTC](https://discourse.julialang.org/t/ow-my-eyes-slight-discourse-theme-changes-that-may-have-impacted-your-dark-light-settings/131038 "2025-09-23T17:02:43Z")

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I’ve made a few minor changes to how the default theme here works (aiming for better and more open maintainability), and for the vast majority of folks here there should be no change. If your eyes are hurting (or someth…

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## [Generate multiple temp name in once](https://discourse.julialang.org/t/generate-multiple-temp-name-in-once/132577)

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**Author:** [@XLin0mu](https://discourse.julialang.org/u/XLin0mu)\
**Replies:** 4\
**Last updated:** [September 23, 2025, 3:28pm UTC](https://discourse.julialang.org/t/generate-multiple-temp-name-in-once/132577 "2025-09-23T15:28:35Z")

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This is a feature request. I’m not sure whether this request suit, but as for my personal needs, this method is convenient. Expected: julia\> tempnames(3) 3-element Vector{String}: "C:\\\\Users\\\\Xlin0\\\\AppData\\\\Local\\\\Te…

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## [Julia cron like event scheduler](https://discourse.julialang.org/t/julia-cron-like-event-scheduler/6899)

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**Author:** [@scelles](https://discourse.julialang.org/u/scelles)\
**Replies:** 6\
**Last updated:** [September 23, 2025, 2:40pm UTC](https://discourse.julialang.org/t/julia-cron-like-event-scheduler/6899 "2025-09-23T14:40:16Z")

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Hello, I’m looking for a cron like scheduler written in Julia (something comparable to APScheduler or sched or schedule for Python) I haven’t found it in the Julia ecosystem… but maybe someone here know a package like…

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## [GLMakie + ProfileView.jl segmentation fault](https://discourse.julialang.org/t/glmakie-profileview-jl-segmentation-fault/132515)

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**Author:** [@filchristou](https://discourse.julialang.org/u/filchristou)\
**Replies:** 4\
**Last updated:** [September 23, 2025, 2:34pm UTC](https://discourse.julialang.org/t/glmakie-profileview-jl-segmentation-fault/132515 "2025-09-23T14:34:01Z")

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After switching to Makie v0.24, I noticed that it no longer plays well with ProfileView.jl But at the moment I am not really sure, whether that is my laptop’s issue or even something coming from ProfileView.jl ? Could …

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## [Large Sparse Hermitian Matrix - Intermediate Eigenvalue Problem](https://discourse.julialang.org/t/large-sparse-hermitian-matrix-intermediate-eigenvalue-problem/131600)

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**Author:** [@Neilis](https://discourse.julialang.org/u/Neilis)\
**Replies:** 9\
**Last updated:** [September 23, 2025, 2:22pm UTC](https://discourse.julialang.org/t/large-sparse-hermitian-matrix-intermediate-eigenvalue-problem/131600 "2025-09-23T14:22:14Z")

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Hi, I am trying to find eigenvalues and eigenvectors for a rather large, sparse, hermitian matrix (size ~1E7 x 1E7). I am mainly interested in around 40 eigenvalues in the middle of the spectrum. To solve this original…

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## [How to mimick a Discrete Bayes Net in Turing.jl?](https://discourse.julialang.org/t/how-to-mimick-a-discrete-bayes-net-in-turing-jl/130319)

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**Author:** [@nicolasg](https://discourse.julialang.org/u/nicolasg)\
**Replies:** 5\
**Last updated:** [September 23, 2025, 1:16pm UTC](https://discourse.julialang.org/t/how-to-mimick-a-discrete-bayes-net-in-turing-jl/130319 "2025-09-23T13:16:40Z")

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Hi, I’ve been using Turing.jl for various purposes, and recently I thought it might be easy to mimick inference from a basic discrete bayesian network like I could do with BayesNets.jl like this for example: bn = Discr…

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## [Dataframe viewer needed](https://discourse.julialang.org/t/dataframe-viewer-needed/9239)

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**Author:** [@xiaodai](https://discourse.julialang.org/u/xiaodai)\
**Replies:** 28\
**Last updated:** [September 23, 2025, 12:36pm UTC](https://discourse.julialang.org/t/dataframe-viewer-needed/9239 "2025-09-23T12:36:25Z")

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I think a dataframe viewer where I can look at each row and column and if needed can scroll across up and down are needed. I know atom has a CSV editor plugin. Perhaps can repurpose that. I know it’s a lot of work but i…

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## [Packages for representing time series data](https://discourse.julialang.org/t/packages-for-representing-time-series-data/84699)

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**Author:** [@ohmsweetohm1](https://discourse.julialang.org/u/ohmsweetohm1)\
**Replies:** 14\
**Last updated:** [September 23, 2025, 12:55pm UTC](https://discourse.julialang.org/t/packages-for-representing-time-series-data/84699 "2025-09-23T12:55:50Z")

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DataFrames.jl seems to be the go to package for representing tabular data. It is very performant and well maintained. However, if someone has strictly structured data like time series data (i.e. a vector of timestamp an…

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## [Makie Axis doesn't work in Pluto.jl but Axis3 does](https://discourse.julialang.org/t/makie-axis-doesnt-work-in-pluto-jl-but-axis3-does/124221)

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**Author:** [@AwesomeQuest](https://discourse.julialang.org/u/AwesomeQuest)\
**Replies:** 3\
**Last updated:** [September 23, 2025, 11:32am UTC](https://discourse.julialang.org/t/makie-axis-doesnt-work-in-pluto-jl-but-axis3-does/124221 "2025-09-23T11:32:13Z")

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When I start a Pluto notebook with the following setup Cell 1 using WGLMakie, Bonito Cell 2 Page() Cell 3 scatter(1:10) Cell 4 scatter(1:10,1:10,1:10) Cell 3 displays a 2D Axis that does not react to the mouse, …

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## [VRP in cuOpt](https://discourse.julialang.org/t/vrp-in-cuopt/132546)

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**Author:** [@KSepetanc](https://discourse.julialang.org/u/KSepetanc)\
**Replies:** 3\
**Last updated:** [September 23, 2025, 9:53am UTC](https://discourse.julialang.org/t/vrp-in-cuopt/132546 "2025-09-23T09:53:51Z")

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First I want to thank the Authors that they implemented cuOpt API in Julia. I also wish to encourage to bundle cuOpt\_jll so that installation is easier. I would like to solve VRP’s with cuOpt, but the documentation only…

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## [MWE for directly calling libhighs (using HiGHS\_jll)](https://discourse.julialang.org/t/mwe-for-directly-calling-libhighs-using-highs-jll/132573)

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**Author:** [@asprionj](https://discourse.julialang.org/u/asprionj)\
**Replies:** 4\
**Last updated:** [September 23, 2025, 9:51am UTC](https://discourse.julialang.org/t/mwe-for-directly-calling-libhighs-using-highs-jll/132573 "2025-09-23T09:51:59Z")

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Hi everyone, I want to directly call into libhighs in HiGHS\_jll.jl, bypassing JuMP.jl and HiGHS.jl. First was to come up with a simple toy MILP-problem, to test if it basically works. The idea is to minimize 0.3x + 0.5y,…

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## [Function like expand.grid in R](https://discourse.julialang.org/t/function-like-expand-grid-in-r/4350)

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**Author:** [@dmbates](https://discourse.julialang.org/u/dmbates)\
**Replies:** 27\
**Last updated:** [September 23, 2025, 7:56am UTC](https://discourse.julialang.org/t/function-like-expand-grid-in-r/4350 "2025-09-23T07:56:57Z")

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I need a function similar to expand.grid in R, which takes a set of vectors and returns their Cartesian product. Is there existing art? My first cut is function expandgrid(vecs) expd = \[\] # vector of expanded ve…

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## [\[ANN\] LibASICamera - A wrapper for the ZWO ASI camera interface](https://discourse.julialang.org/t/ann-libasicamera-a-wrapper-for-the-zwo-asi-camera-interface/36607)

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**Author:** [@AlfTetzlaff](https://discourse.julialang.org/u/AlfTetzlaff)\
**Replies:** 1\
**Last updated:** [September 23, 2025, 2:22am UTC](https://discourse.julialang.org/t/ann-libasicamera-a-wrapper-for-the-zwo-asi-camera-interface/36607 "2025-09-23T02:22:05Z")

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Hey everybody, I spent the past weeks learning julia and wrote a wrapper for the ZWO ASI camera SDK. You can take a look at the result here: So far it works under Linux. I have not tested Mac, Win and RasPi so far, b…

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## [\`map\` should be more consistent](https://discourse.julialang.org/t/map-should-be-more-consistent/132559)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 7\
**Last updated:** [September 23, 2025, 1:31am UTC](https://discourse.julialang.org/t/map-should-be-more-consistent/132559 "2025-09-23T01:31:32Z")

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Dear all, I wonder if it is proper to amend this behavior? julia\> map(\_ -\> 0, 0) 0 julia\> struct Nvmber end julia\> Base.ndims(::Nvmber) = 0 julia\> Base.length(::Nvmber) = 1 julia\> Base.iterate(f::Nvmber) = (f, miss…

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## [Seeking Insights: Tickerplants and Complex Event Processing (CEP) in Julia](https://discourse.julialang.org/t/seeking-insights-tickerplants-and-complex-event-processing-cep-in-julia/131980)

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**Author:** [@rohanshiloh](https://discourse.julialang.org/u/rohanshiloh)\
**Replies:** 4\
**Last updated:** [September 22, 2025, 9:54pm UTC](https://discourse.julialang.org/t/seeking-insights-tickerplants-and-complex-event-processing-cep-in-julia/131980 "2025-09-22T21:54:32Z")

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The functional programming language and time-series vector database q/KDB has a low-latency architecture for efficiently processing extremely large volumes of real-time financial data directly from exchanges like the NYS…

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## [SciMLSensitivity fails on GPU?](https://discourse.julialang.org/t/scimlsensitivity-fails-on-gpu/132575)

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**Author:** [@Iris\_Allevi](https://discourse.julialang.org/u/Iris_Allevi)\
**Replies:** 5\
**Last updated:** [September 22, 2025, 9:37pm UTC](https://discourse.julialang.org/t/scimlsensitivity-fails-on-gpu/132575 "2025-09-22T21:37:51Z")

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Hi all, I’m running into a problem when trying to compute gradients of an ODE solution on GPU (with Metal.jl) using SciMLSensitivity (SciMLSensitivity: Automatic Differentiation and Adjoints for (Differential) Equation …

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## [How to optimize for processing over array of heterogeneous information?](https://discourse.julialang.org/t/how-to-optimize-for-processing-over-array-of-heterogeneous-information/132541)

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**Author:** [@mj2984](https://discourse.julialang.org/u/mj2984)\
**Replies:** 7\
**Last updated:** [September 22, 2025, 9:35pm UTC](https://discourse.julialang.org/t/how-to-optimize-for-processing-over-array-of-heterogeneous-information/132541 "2025-09-22T21:35:02Z")

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Consider a simple example where I perform something inside an array A based on some co-ordinate information (abstract type CoOrdinateInfo). I have two possible cases. Regular view of an array, with all elements that h…

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## [Only trivial solution in BifurcationKit](https://discourse.julialang.org/t/only-trivial-solution-in-bifurcationkit/132391)

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**Author:** [@acubed](https://discourse.julialang.org/u/acubed)\
**Replies:** 13\
**Last updated:** [September 22, 2025, 9:09pm UTC](https://discourse.julialang.org/t/only-trivial-solution-in-bifurcationkit/132391 "2025-09-22T21:09:03Z")

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I try to investigate pitchfork bifurcation, using the BifurcationKit. My problem looks as follow. I start from some definitions: ND = 500 dx = 1.0/ND x = collect(1:ND)\*dx.-dx/2 J = +1.0 beta0 = 0.1 u0 = 0.01\*ones(Float…

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## [Discretization of semi-coupled wave and diffusion equations fails for step size of pi/(25n) using MethodOfLines.jl](https://discourse.julialang.org/t/discretization-of-semi-coupled-wave-and-diffusion-equations-fails-for-step-size-of-pi-25n-using-methodoflines-jl/106091)

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**Author:** [@NonDairyNeutrino](https://discourse.julialang.org/u/NonDairyNeutrino)\
**Replies:** 6\
**Last updated:** [September 22, 2025, 5:53pm UTC](https://discourse.julialang.org/t/discretization-of-semi-coupled-wave-and-diffusion-equations-fails-for-step-size-of-pi-25n-using-methodoflines-jl/106091 "2025-09-22T17:53:04Z")

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Intro I’m using a semi-coupled system of wave and diffusion equations to simulate a string whose mass/speed of sound diffuses (as a toy to familiarize myself with MethodOfLines.jl for my master’s thesis in high-performan…

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## [Enable debug logging for one file or one function in a module](https://discourse.julialang.org/t/enable-debug-logging-for-one-file-or-one-function-in-a-module/132423)

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**Author:** [@Ken\_Williams](https://discourse.julialang.org/u/Ken_Williams)\
**Replies:** 6\
**Last updated:** [September 22, 2025, 3:33pm UTC](https://discourse.julialang.org/t/enable-debug-logging-for-one-file-or-one-function-in-a-module/132423 "2025-09-22T15:33:09Z")

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Is it possible to enable @debug messages selectively, for a specific file or function within a module? I see in the docs that Message filtering can be influenced through the JULIA\_DEBUG environment variable, and serve…

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## [\[ANN\] OpenGithubModelsApi.jl - Julia Client for GitHub's AI Models API](https://discourse.julialang.org/t/ann-opengithubmodelsapi-jl-julia-client-for-githubs-ai-models-api/132574)

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**Author:** [@hamza\_souidi](https://discourse.julialang.org/u/hamza_souidi)\
**Replies:** 0\
**Last updated:** [September 22, 2025, 3:20pm UTC](https://discourse.julialang.org/t/ann-opengithubmodelsapi-jl-julia-client-for-githubs-ai-models-api/132574 "2025-09-22T15:20:42Z")

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Hi again , I’m excited to announce OpenGithubModelsApi.jl, a new Julia client package that provides seamless integration with GitHub’s AI Models API, giving Julia developers direct access to cutting-edge AI models throug…

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## [How to generate zero dependency CLI using Comonicon.jl](https://discourse.julialang.org/t/how-to-generate-zero-dependency-cli-using-comonicon-jl/132571)

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**Author:** [@favba](https://discourse.julialang.org/u/favba)\
**Replies:** 0\
**Last updated:** [September 22, 2025, 2:53pm UTC](https://discourse.julialang.org/t/how-to-generate-zero-dependency-cli-using-comonicon-jl/132571 "2025-09-22T14:53:25Z")

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In Comonicon.jl 's README it is said it is possible to generate CLI without adding Comonicon as dependency: Zero Dependency You can get rid of Comonicon entirely after you generate the command line parsing script via w…

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## [Understanding the Lux.jl + ReverseDiff TrackedArray Warning in UDEs](https://discourse.julialang.org/t/understanding-the-lux-jl-reversediff-trackedarray-warning-in-udes/132488)

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**Author:** [@guscaldas](https://discourse.julialang.org/u/guscaldas)\
**Replies:** 2\
**Last updated:** [September 22, 2025, 1:47pm UTC](https://discourse.julialang.org/t/understanding-the-lux-jl-reversediff-trackedarray-warning-in-udes/132488 "2025-09-22T13:47:43Z")

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Hello everyone, I’m working with Universal Differential Equations (UDEs) using Lux.jl and Optimization.jl, and I consistently encounter the following warning when the training process begins. This also happens when runn…

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## [Min max Ipopt opti : error in step computation](https://discourse.julialang.org/t/min-max-ipopt-opti-error-in-step-computation/132429)

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**Author:** [@baroqueuse](https://discourse.julialang.org/u/baroqueuse)\
**Replies:** 6\
**Last updated:** [September 22, 2025, 12:40pm UTC](https://discourse.julialang.org/t/min-max-ipopt-opti-error-in-step-computation/132429 "2025-09-22T12:40:06Z")

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Hello everybody. I want to solve a min max problem with Ipopt solver. I used the trick described in JuMP documentation (section tips and tricks). I managed to write my problem but the optimization do not work. I hade t…

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## [Type stability of taylor() from Symbolics.jl](https://discourse.julialang.org/t/type-stability-of-taylor-from-symbolics-jl/132561)

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**Author:** [@Lulu\_ser](https://discourse.julialang.org/u/Lulu_ser)\
**Replies:** 0\
**Last updated:** [September 22, 2025, 11:45am UTC](https://discourse.julialang.org/t/type-stability-of-taylor-from-symbolics-jl/132561 "2025-09-22T11:45:07Z")

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How do you make sure the function taylor() from Symbolics.jl is type stable ? I want to use bigint for large order asymptotic expansion not to overflow the classic int64 (order=17 of the following function already over…

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## [Task local storage and scoped values: What they are used for](https://discourse.julialang.org/t/task-local-storage-and-scoped-values-what-they-are-used-for/132045)

<div class="topic-metadata">

**Author:** [@jakobnissen](https://discourse.julialang.org/u/jakobnissen)\
**Replies:** 12\
**Last updated:** [September 22, 2025, 7:46am UTC](https://discourse.julialang.org/t/task-local-storage-and-scoped-values-what-they-are-used-for/132045 "2025-09-22T07:46:55Z")

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A recent Slack thread discussed what the purpose of task local storage (TLS) and scoped values was. Since these features of Julia are a little obscure, @Krastanov suggested I post them to Discourse for posterity. @vchur…

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