# Latest

**URL:** https://discourse.julialang.org/latest.md?page=26

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

**Page:** 27

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## [\[ANN\] Orientations.jl](https://discourse.julialang.org/t/ann-orientations-jl/137498)

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**Author:** [@tuckermcclure](https://discourse.julialang.org/u/tuckermcclure)\
**Replies:** 3\
**Last updated:** [June 8, 2026, 10:04pm UTC](https://discourse.julialang.org/t/ann-orientations-jl/137498 "2026-06-08T22:04:31Z")

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Hi all. I’d like to introduce Orientations.jl, which provides several parameterizations of orientation and their operations and conversions. Types: AxisAngle DirectionCosineMatrix EulerRodriguesParameters (“quaternion…

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## [DearDiary.jl: state of the project at v0.8.0](https://discourse.julialang.org/t/deardiary-jl-state-of-the-project-at-v0-8-0/137509)

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**Author:** [@pebeto](https://discourse.julialang.org/u/pebeto)\
**Replies:** 0\
**Last updated:** [June 8, 2026, 9:59pm UTC](https://discourse.julialang.org/t/deardiary-jl-state-of-the-project-at-v0-8-0/137509 "2026-06-08T21:59:04Z")

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Hi all, A few months on from the launch thread, DearDiary.jl just hit v0.8.0, and it feels like the right point to share where the project stands rather than just what shipped today. The shape of the project DearDiary.…

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## [Pluto Notebook Excessive Compute Time with PlotlyJS](https://discourse.julialang.org/t/pluto-notebook-excessive-compute-time-with-plotlyjs/122854)

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**Author:** [@Jake](https://discourse.julialang.org/u/Jake)\
**Replies:** 11\
**Last updated:** [June 8, 2026, 9:11pm UTC](https://discourse.julialang.org/t/pluto-notebook-excessive-compute-time-with-plotlyjs/122854 "2026-06-08T21:11:34Z")

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I have a Pluto notebook with about 13 cells, most of which have a variable number of lines between the begin and end. When I take a look at the sum total of the time taken to execute each cell as reported by Pluto, it t…

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## [\[ANN\] ReusePkgTemplates.jl and ReuseLicensing.jl: REUSE-compliant packages with explicit package-level licensing](https://discourse.julialang.org/t/ann-reusepkgtemplates-jl-and-reuselicensing-jl-reuse-compliant-packages-with-explicit-package-level-licensing/137504)

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**Author:** [@gwr](https://discourse.julialang.org/u/gwr)\
**Replies:** 0\
**Last updated:** [June 8, 2026, 7:56pm UTC](https://discourse.julialang.org/t/ann-reusepkgtemplates-jl-and-reuselicensing-jl-reuse-compliant-packages-with-explicit-package-level-licensing/137504 "2026-06-08T19:56:29Z")

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Prelude A typical conversation in conventional Julia package land … A: Have a look at my new package. B: Nice. What’s the license? A: MIT. Easy to use, easy to reuse. B: MIT for what? A: The package. B: All of it? …

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## [2026-June-11th: In-person meetup in Berlin again (After a long break)](https://discourse.julialang.org/t/2026-june-11th-in-person-meetup-in-berlin-again-after-a-long-break/137501)

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**Author:** [@sunito](https://discourse.julialang.org/u/sunito)\
**Replies:** 0\
**Last updated:** [June 8, 2026, 6:45pm UTC](https://discourse.julialang.org/t/2026-june-11th-in-person-meetup-in-berlin-again-after-a-long-break/137501 "2026-06-08T18:45:45Z")

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After a very quiet time for Berlin Julia Users, we managed to schedule another meetup: This Thursday, June-11th at 5 pm at WIAS, Anton-Wilhelm-Amo-Straße 39, 10117 Berlin. It will be an informal meetup without a schedu…

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## [Trouble using @compact along reactant.jl](https://discourse.julialang.org/t/trouble-using-compact-along-reactant-jl/137497)

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**Author:** [@yjr](https://discourse.julialang.org/u/yjr)\
**Replies:** 4\
**Last updated:** [June 8, 2026, 5:27pm UTC](https://discourse.julialang.org/t/trouble-using-compact-along-reactant-jl/137497 "2026-06-08T17:27:30Z")

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Hello, I’m trying to set a simple network as described by the code below, but when I compiled it to GPU using reactant.jl it works if the sequence dimension (2nd dimension) is smaller than 100, but if I grow it bigger i…

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## [Struggling with Symbolics matrix multiplication](https://discourse.julialang.org/t/struggling-with-symbolics-matrix-multiplication/137476)

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**Author:** [@ea42gh](https://discourse.julialang.org/u/ea42gh)\
**Replies:** 3\
**Last updated:** [June 8, 2026, 1:36pm UTC](https://discourse.julialang.org/t/struggling-with-symbolics-matrix-multiplication/137476 "2026-06-08T13:36:04Z")

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Newbie Symbolics question. I have two matrices with element type Int L = \[1 0 0 0; -3 1 0 0; 2 3 1 0; -2 3 -2 1\] D = \[1 0 0 0; 0 2 0 0; 0 0 1 0; 0 0 0 2\] Forming the product G = Num.(L) \* sqrt( Num.(D) ) yields …

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## [StateSpaceDynamics.jl: probabilistic modeling of non-conjugate state-space models](https://discourse.julialang.org/t/statespacedynamics-jl-probabilistic-modeling-of-non-conjugate-state-space-models/134567)

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**Author:** [@rsenne](https://discourse.julialang.org/u/rsenne)\
**Replies:** 7\
**Last updated:** [June 8, 2026, 1:17pm UTC](https://discourse.julialang.org/t/statespacedynamics-jl-probabilistic-modeling-of-non-conjugate-state-space-models/134567 "2026-06-08T13:17:54Z")

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Hi everyone! I’m really happy to announce a new Julia package for modelling multivariate time series data using probabilistic state space models! State-space models are a core tool for analyzing high-dimensional time …

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## [\[ANN\] Training course “Julia for HPC” in Stuttgart, Germany on Sep 29-Oct 2, 2026](https://discourse.julialang.org/t/ann-training-course-julia-for-hpc-in-stuttgart-germany-on-sep-29-oct-2-2026/137435)

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**Author:** [@carstenbauer](https://discourse.julialang.org/u/carstenbauer)\
**Replies:** 2\
**Last updated:** [June 8, 2026, 12:07pm UTC](https://discourse.julialang.org/t/ann-training-course-julia-for-hpc-in-stuttgart-germany-on-sep-29-oct-2-2026/137435 "2026-06-08T12:07:30Z")

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For the fifth year in a row (see e.g. here or here or here) I’m pleased to annouce that there will be another opportunity to learn more about using Julia for high-performance computing this fall! In collaboration with t…

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## [Makie | volumeslices!: combining synchronized rotation, etc. with sliders and toggles](https://discourse.julialang.org/t/makie-volumeslices-combining-synchronized-rotation-etc-with-sliders-and-toggles/137488)

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**Author:** [@Audrius-St](https://discourse.julialang.org/u/Audrius-St)\
**Replies:** 0\
**Last updated:** [June 8, 2026, 4:30am UTC](https://discourse.julialang.org/t/makie-volumeslices-combining-synchronized-rotation-etc-with-sliders-and-toggles/137488 "2026-06-08T04:30:20Z")

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Hello, I adapted the following code to synchronize rotations, translations, and zoom between two 3D LScene volumeslices! as in the MNWE code below: https://discourse.julialang.org/t/makie-linking-cameras-in-multiple-3d…

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## [Writing on external temporary files with MPI.jl](https://discourse.julialang.org/t/writing-on-external-temporary-files-with-mpi-jl/137485)

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**Author:** [@phx](https://discourse.julialang.org/u/phx)\
**Replies:** 3\
**Last updated:** [June 7, 2026, 11:34pm UTC](https://discourse.julialang.org/t/writing-on-external-temporary-files-with-mpi-jl/137485 "2026-06-07T23:34:37Z")

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Hi all. I’m learning how to use MPI with Julia, specifically the MPI.jl package. I’m trying to understand how to print on external temporary files, and I can’t make it work. This is my current minimal non-working examp…

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## [How to insert an interactive condition inside a Makie recipe?](https://discourse.julialang.org/t/how-to-insert-an-interactive-condition-inside-a-makie-recipe/137482)

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**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 6\
**Last updated:** [June 7, 2026, 6:04pm UTC](https://discourse.julialang.org/t/how-to-insert-an-interactive-condition-inside-a-makie-recipe/137482 "2026-06-07T18:04:27Z")

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The following MWE is self-explanatory: using GLMakie import Makie # define recipe with condition "showlines" Makie.@recipe(MyPlot, x, y) do scene Makie.Attributes(; showlines=true ) end # toggle between scatte…

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## [Writing to a shared buffer in multi-threaded for loop](https://discourse.julialang.org/t/writing-to-a-shared-buffer-in-multi-threaded-for-loop/137373)

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**Author:** [@user664303](https://discourse.julialang.org/u/user664303)\
**Replies:** 17\
**Last updated:** [June 7, 2026, 5:53pm UTC](https://discourse.julialang.org/t/writing-to-a-shared-buffer-in-multi-threaded-for-loop/137373 "2026-06-07T17:53:38Z")

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I have a for loop that iterates over millions of elements, each of which are processed quickly. Elements update random parts of a shared buffer. I’m trying to parallelize this operation in a performant way. I have consid…

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## [How to call multiple Makie recipes for heterogeneous collections?](https://discourse.julialang.org/t/how-to-call-multiple-makie-recipes-for-heterogeneous-collections/137483)

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**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 2\
**Last updated:** [June 7, 2026, 4:29pm UTC](https://discourse.julialang.org/t/how-to-call-multiple-makie-recipes-for-heterogeneous-collections/137483 "2026-06-07T16:29:52Z")

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The MWE is self-explanatory: using GLMakie import Makie # type hierarchy abstract type G end struct G1 \<: G end struct G2 \<: G end # define recipe for vector of G Makie.@recipe(MyPlot, gs) do scene Makie.Attributes(…

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## [\[ANN\] SymbolicAWEModels.jl — a compiler for mechanical systems, built for Airborne Wind Energy](https://discourse.julialang.org/t/ann-symbolicawemodels-jl-a-compiler-for-mechanical-systems-built-for-airborne-wind-energy/137473)

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**Author:** [@Bart\_van\_de\_Lint](https://discourse.julialang.org/u/Bart_van_de_Lint)\
**Replies:** 2\
**Last updated:** [June 7, 2026, 8:17am UTC](https://discourse.julialang.org/t/ann-symbolicawemodels-jl-a-compiler-for-mechanical-systems-built-for-airborne-wind-energy/137473 "2026-06-07T08:17:42Z")

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Hi all, I’m happy to announce SymbolicAWEModels.jl (registered, currently v0.11.1). It’s best thought of as a compiler for flexible mechanical systems. You describe a structure — point masses, spring-damper segments…

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## [Reading Fortran-style Complex Numbers From File](https://discourse.julialang.org/t/reading-fortran-style-complex-numbers-from-file/137453)

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**Author:** [@ducksoverip](https://discourse.julialang.org/u/ducksoverip)\
**Replies:** 14\
**Last updated:** [June 7, 2026, 2:56am UTC](https://discourse.julialang.org/t/reading-fortran-style-complex-numbers-from-file/137453 "2026-06-07T02:56:47Z")

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Part of my inherited research code is a highly parallelized Fortran90 program that produces, as its primary output, a large text file (~1 GB) of complex numbers in the following format: (1.014631909321741E-002,-1.82546…

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## [GTK screen updating](https://discourse.julialang.org/t/gtk-screen-updating/137322)

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**Author:** [@isaac-aderemi](https://discourse.julialang.org/u/isaac-aderemi)\
**Replies:** 1\
**Last updated:** [June 6, 2026, 5:50pm UTC](https://discourse.julialang.org/t/gtk-screen-updating/137322 "2026-06-06T17:50:30Z")

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My question How does a person update the screen in gtk for a game or video updating? notes Glade was used to make the following code and I was wondering how I would update the screen (the ppm that is currently being use…

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## [Best practice: threaded sparse matrix assembly](https://discourse.julialang.org/t/best-practice-threaded-sparse-matrix-assembly/137447)

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**Author:** [@tduretz](https://discourse.julialang.org/u/tduretz)\
**Replies:** 13\
**Last updated:** [June 6, 2026, 1:57pm UTC](https://discourse.julialang.org/t/best-practice-threaded-sparse-matrix-assembly/137447 "2026-06-06T13:57:05Z")

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What is current state-of-the-art regarding threaded sparse matrix assembly? We’re currently having an issue where sparse matrix assembly is taking more time than the linear solver (at low resolutions). One way to improv…

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## [Memory allocations in Flux evaluation/training (w/MVE)](https://discourse.julialang.org/t/memory-allocations-in-flux-evaluation-training-w-mve/137175)

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**Author:** [@CrashBurnRepeat](https://discourse.julialang.org/u/CrashBurnRepeat)\
**Replies:** 39\
**Last updated:** [June 6, 2026, 10:00am UTC](https://discourse.julialang.org/t/memory-allocations-in-flux-evaluation-training-w-mve/137175 "2026-06-06T10:00:29Z")

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I’m currently using Flux to do some GAN experiments and I’m finding that the training is painfully slow. On the CPU, a single epoch can take ~30min for a 286x32 sample dataloader. GPU evaluation is faster, but still feel…

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## [Juliaup cannot find Julia](https://discourse.julialang.org/t/juliaup-cannot-find-julia/137462)

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**Author:** [@huang\_min](https://discourse.julialang.org/u/huang_min)\
**Replies:** 5\
**Last updated:** [June 6, 2026, 9:32am UTC](https://discourse.julialang.org/t/juliaup-cannot-find-julia/137462 "2026-06-06T09:32:46Z")

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I am using Ubuntu under WSL2. Yesterday morning, everything was fine and I did not do anything to the system. However, around evening, Juliaup could not find Julia any more. Actually, I was using the same screen in the m…

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## [Juliaup in PATH, but julia not in PATH](https://discourse.julialang.org/t/juliaup-in-path-but-julia-not-in-path/92889)

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**Author:** [@wakelin-g](https://discourse.julialang.org/u/wakelin-g)\
**Replies:** 18\
**Last updated:** [June 6, 2026, 3:21am UTC](https://discourse.julialang.org/t/juliaup-in-path-but-julia-not-in-path/92889 "2026-06-06T03:21:38Z")

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Just deleted Julia from my computer and reinstalled via juliaup. All seemed to work well, no issues installing or accessing juliaup from the shell, but for some reason I can’t access julia itself. Anyone have any idea…

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## [Anyone having performance issues with create\_sysimage on Fedora?](https://discourse.julialang.org/t/anyone-having-performance-issues-with-create-sysimage-on-fedora/137454)

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**Author:** [@Deduction42](https://discourse.julialang.org/u/Deduction42)\
**Replies:** 6\
**Last updated:** [June 5, 2026, 10:50pm UTC](https://discourse.julialang.org/t/anyone-having-performance-issues-with-create-sysimage-on-fedora/137454 "2026-06-05T22:50:16Z")

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I just started using Fedora, and tried using create\_sysimage on a project that usually takes 5 minutes minutes to complete on Windows/Ubuntu. After building it in Windows, with PackageCompiler v2.3.0, I tried building it…

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## [\[ANN\] HTTP.jl 2.0 release and new package Reseau.jl](https://discourse.julialang.org/t/ann-http-jl-2-0-release-and-new-package-reseau-jl/137323)

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**Author:** [@quinnj](https://discourse.julialang.org/u/quinnj)\
**Replies:** 17\
**Last updated:** [June 5, 2026, 5:02pm UTC](https://discourse.julialang.org/t/ann-http-jl-2-0-release-and-new-package-reseau-jl/137323 "2026-06-05T17:02:24Z")

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Hello! I’m excited to announce two related networking package updates: Reseau.jl and HTTP.jl 2.0. The short version: HTTP.jl 2.0 is a pretty substantial internals rewrite, now built on top of Reseau.jl: a new lower-leve…

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## [\`ArgumentError: Package not found in current path\` in Quarto in VSCode](https://discourse.julialang.org/t/argumenterror-package-not-found-in-current-path-in-quarto-in-vscode/105949)

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**Author:** [@alicepiller](https://discourse.julialang.org/u/alicepiller)\
**Replies:** 2\
**Last updated:** [June 5, 2026, 3:25pm UTC](https://discourse.julialang.org/t/argumenterror-package-not-found-in-current-path-in-quarto-in-vscode/105949 "2026-06-05T15:25:44Z")

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I have created a module with various functions that I’m using for a data analysis project. I want to write up a report using Quarto, but it won’t let me load in the module. It gives the error: ArgumentError: Package not …

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## [\[ANN\] Ark.jl v0.5 - Archetype-based Entity Component System (ECS) for Julia](https://discourse.julialang.org/t/ann-ark-jl-v0-5-archetype-based-entity-component-system-ecs-for-julia/137380)

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**Author:** [@Tortar](https://discourse.julialang.org/u/Tortar)\
**Replies:** 3\
**Last updated:** [June 5, 2026, 3:19pm UTC](https://discourse.julialang.org/t/ann-ark-jl-v0-5-archetype-based-entity-component-system-ecs-for-julia/137380 "2026-06-05T15:19:07Z")

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Hi all! Happy to announce the release of Ark.jl 0.5. It was a slow burning effort this time, where we tried to make the package more robust in several aspects. It took time and effort, but I can say we made some good pr…

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## [When could I need more threads than CPU cores, given 1.7+ task migration?](https://discourse.julialang.org/t/when-could-i-need-more-threads-than-cpu-cores-given-1-7-task-migration/137315)

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**Author:** [@Benny](https://discourse.julialang.org/u/Benny)\
**Replies:** 16\
**Last updated:** [June 5, 2026, 2:36pm UTC](https://discourse.julialang.org/t/when-could-i-need-more-threads-than-cpu-cores-given-1-7-task-migration/137315 "2026-06-05T14:36:24Z")

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Title basically says it all. To elaborate, the number of OS threads running in parallel is at most the number of virtual CPU cores. The reason for having many more threads is that some threads can or must idle, so there…

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## [\[ANN\] julia-client — persistent Julia sessions as CLI](https://discourse.julialang.org/t/ann-julia-client-persistent-julia-sessions-as-cli/137330)

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**Author:** [@Beforerr](https://discourse.julialang.org/u/Beforerr)\
**Replies:** 8\
**Last updated:** [June 5, 2026, 12:22pm UTC](https://discourse.julialang.org/t/ann-julia-client-persistent-julia-sessions-as-cli/137330 "2026-06-05T12:22:56Z")

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Julia’s startup + compilation tax is brutal when an AI assistant (or a shell loop, or CI) spawns a fresh julia on every call. Inspired by julia-mcp, julia-client solves the same problem, but as an ordinary command-line t…

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## [Linking to Zulip on the Discourse bottom banner](https://discourse.julialang.org/t/linking-to-zulip-on-the-discourse-bottom-banner/47150)

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**Author:** [@Mason](https://discourse.julialang.org/u/Mason)\
**Replies:** 16\
**Last updated:** [June 4, 2026, 7:13pm UTC](https://discourse.julialang.org/t/linking-to-zulip-on-the-discourse-bottom-banner/47150 "2026-06-04T19:13:22Z")

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Hello, I recently noticed that we now have a bottom banner on Discourse with some links to the Julia twitter, youtube, github, stack overflow and Slack pages. I was hoping to start a conversation about having the Jul…

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## [GPU (CUDA) vs CPU QR decomposition performance of dense wide complex matrix](https://discourse.julialang.org/t/gpu-cuda-vs-cpu-qr-decomposition-performance-of-dense-wide-complex-matrix/137448)

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**Author:** [@BambOoxX](https://discourse.julialang.org/u/BambOoxX)\
**Replies:** 0\
**Last updated:** [June 4, 2026, 3:54pm UTC](https://discourse.julialang.org/t/gpu-cuda-vs-cpu-qr-decomposition-performance-of-dense-wide-complex-matrix/137448 "2026-06-04T15:54:00Z")

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Hello all, I have an algorithm that requires to compute the QR decomposition (though I’m only interested in R) of a wide complex double precision matrix with a typical size of (400 rows x 16000 columns). I have squeeze…

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## [Dataframe data manipulation](https://discourse.julialang.org/t/dataframe-data-manipulation/136950)

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**Author:** [@SergeantMike67](https://discourse.julialang.org/u/SergeantMike67)\
**Replies:** 7\
**Last updated:** [June 4, 2026, 3:48pm UTC](https://discourse.julialang.org/t/dataframe-data-manipulation/136950 "2026-06-04T15:48:45Z")

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I have a data frame that is formatted like the example below. Row │ Pairwise p\_adj boo Factor IntBoo │ String Float64 Bool String …

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