# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=199

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**Page:** 200

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## [\[SciMLOperators\] Idiomatic way to define a stateful FunctionOperator](https://discourse.julialang.org/t/scimloperators-idiomatic-way-to-define-a-stateful-functionoperator/97821)

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**Author:** [@sbrisard](https://discourse.julialang.org/u/sbrisard)\
**Replies:** 0\
**Last updated:** [April 23, 2023, 4:06pm UTC](https://discourse.julialang.org/t/scimloperators-idiomatic-way-to-define-a-stateful-functionoperator/97821 "2023-04-23T16:06:03Z")

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Hi, I’m trying to implement the 2D laplacian of a scalar field as a SciMLOperators.FunctionOperator, using centered finite differences. The op function needs to know the physical size of the grid (Lx, Ly) as well as the…

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## [Do I understand Enzyme properly?](https://discourse.julialang.org/t/do-i-understand-enzyme-properly/97760)

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**Author:** [@gdalle](https://discourse.julialang.org/u/gdalle)\
**Replies:** 7\
**Last updated:** [April 22, 2023, 8:43am UTC](https://discourse.julialang.org/t/do-i-understand-enzyme-properly/97760 "2023-04-22T08:43:45Z")

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I think I finally have a grasp on how Enzyme works, but I would like an expert to validate this. Consider a possibly mutating vector function f(x, y) which outputs a scalar value z. We denote by x\_a and y\_a the contents…

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## [Processing real-time streaming audio, controlled by a GUI](https://discourse.julialang.org/t/processing-real-time-streaming-audio-controlled-by-a-gui/96692)

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**Author:** [@cdevane](https://discourse.julialang.org/u/cdevane)\
**Replies:** 5\
**Last updated:** [April 21, 2023, 6:24am UTC](https://discourse.julialang.org/t/processing-real-time-streaming-audio-controlled-by-a-gui/96692 "2023-04-21T06:24:37Z")

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I’m a relative newcomer to Julia. I’d like to build an app that processes an audio stream in real time, with processing parameters controlled from a GUI. I’m looking for suggestions on how to approach this, or better ye…

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## [Passing arrays as variable bounds without indexing them is not supported. JuMP](https://discourse.julialang.org/t/passing-arrays-as-variable-bounds-without-indexing-them-is-not-supported-jump/97697)

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**Author:** [@himgoy](https://discourse.julialang.org/u/himgoy)\
**Replies:** 5\
**Last updated:** [April 20, 2023, 11:30pm UTC](https://discourse.julialang.org/t/passing-arrays-as-variable-bounds-without-indexing-them-is-not-supported-jump/97697 "2023-04-20T23:30:19Z")

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Hello Everyone, I am working on a linear programming problem for which I am creating lower bounds and upper bounds for each variable using for loop and pushing it into an array. I have a total of 5489 variables. M = Mo…

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## [Question about coalesced read and write to the global memory using CUDA.jl 2D grid](https://discourse.julialang.org/t/question-about-coalesced-read-and-write-to-the-global-memory-using-cuda-jl-2d-grid/97689)

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**Author:** [@fred\_wu](https://discourse.julialang.org/u/fred_wu)\
**Replies:** 1\
**Last updated:** [April 20, 2023, 8:02pm UTC](https://discourse.julialang.org/t/question-about-coalesced-read-and-write-to-the-global-memory-using-cuda-jl-2d-grid/97689 "2023-04-20T20:02:22Z")

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Hi, I’m having some confusion with a simple test of matrix transpose using a 2D grid in CUDA.jl. I wrote two matrix transpose functions, the only difference is that in the first function, “ix” is along the direction of …

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## [Efficient CuArray shift/rotation](https://discourse.julialang.org/t/efficient-cuarray-shift-rotation/86845)

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**Author:** [@swibe](https://discourse.julialang.org/u/swibe)\
**Replies:** 2\
**Last updated:** [April 20, 2023, 7:55pm UTC](https://discourse.julialang.org/t/efficient-cuarray-shift-rotation/86845 "2023-04-20T19:55:53Z")

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Hi all, I have a workload which regularly needs to perform operations on adjacent elements in an array and accumulate the result. I would sometimes like to be able to run this parallelised across the whole GPU, sometime…

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## [How to plot color in scatter3d based on the value of z direction using backends: plotlyjs](https://discourse.julialang.org/t/how-to-plot-color-in-scatter3d-based-on-the-value-of-z-direction-using-backends-plotlyjs/97712)

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**Author:** [@jianqixi](https://discourse.julialang.org/u/jianqixi)\
**Replies:** 2\
**Last updated:** [April 20, 2023, 7:43pm UTC](https://discourse.julialang.org/t/how-to-plot-color-in-scatter3d-based-on-the-value-of-z-direction-using-backends-plotlyjs/97712 "2023-04-20T19:43:37Z")

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Hi, I am trying to plot the scatter points using scatter3d, I am wondering how to color the points based on the value of z direction. Thanks

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## [Mirror makie elements](https://discourse.julialang.org/t/mirror-makie-elements/97629)

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**Author:** [@weymouth](https://discourse.julialang.org/u/weymouth)\
**Replies:** 2\
**Last updated:** [April 20, 2023, 2:13pm UTC](https://discourse.julialang.org/t/mirror-makie-elements/97629 "2023-04-20T14:13:35Z")

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Hey folks, I’m using GLMakie to make some videos with contours, and it would be nice to be able to apply mirroring to a given axis (or two, in my case). My data is all in one quadrant, and I could make an array four tim…

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## [HTTP.jl disable self signed certificate](https://discourse.julialang.org/t/http-jl-disable-self-signed-certificate/36590)

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**Author:** [@Impressium](https://discourse.julialang.org/u/Impressium)\
**Replies:** 3\
**Last updated:** [April 20, 2023, 11:16am UTC](https://discourse.julialang.org/t/http-jl-disable-self-signed-certificate/36590 "2023-04-20T11:16:43Z")

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How to disable self signed certificate in a HTTP.request in the HTTP.jl package. IOError(MbedTLS error code -9984: X509 - Certificate verification failed, e.g. CRL, CA or signature check failed during request

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## [Flux: How to minimise the garbage collection time?](https://discourse.julialang.org/t/flux-how-to-minimise-the-garbage-collection-time/97572)

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**Author:** [@onurcanbektas](https://discourse.julialang.org/u/onurcanbektas)\
**Replies:** 22\
**Last updated:** [April 20, 2023, 7:26am UTC](https://discourse.julialang.org/t/flux-how-to-minimise-the-garbage-collection-time/97572 "2023-04-20T07:26:11Z")

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I have a code where I use several different separate neural networks inside a for loop. Here is the times that it tooks to go over the loop: 0.149468 seconds (10.69 k allocations: 1.331 MiB, 99.45% gc time) 0.001026 s…

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## [Plots.jl with PGFPlotsX backend produces plot way of center](https://discourse.julialang.org/t/plots-jl-with-pgfplotsx-backend-produces-plot-way-of-center/97678)

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**Author:** [@TheBigZet](https://discourse.julialang.org/u/TheBigZet)\
**Replies:** 2\
**Last updated:** [April 20, 2023, 6:55am UTC](https://discourse.julialang.org/t/plots-jl-with-pgfplotsx-backend-produces-plot-way-of-center/97678 "2023-04-20T06:55:50Z")

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This simple Julia code: using Plots; pgfplotsx(); using LaTeXStrings x = \[-243, 144, 243\] e1 = \[120, 149, 26\] e2 = \[218, 271, 68\] e3 = \[314, 380, 148\] function plot\_eps(p, x, y, color, label) plot!(p, x, y, label …

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## [Parallell TensorKit](https://discourse.julialang.org/t/parallell-tensorkit/97410)

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**Author:** [@Nellatur](https://discourse.julialang.org/u/Nellatur)\
**Replies:** 5\
**Last updated:** [April 20, 2023, 6:48am UTC](https://discourse.julialang.org/t/parallell-tensorkit/97410 "2023-04-20T06:48:27Z")

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Based on Please read: make it easier to help you - #2 Avoid extending the original question that has already been answered with many new questions. It is better to start a new thread. Let me start a new thread than f…

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## [Help in running flux on NVIDIA GeForce GT 710 GPU](https://discourse.julialang.org/t/help-in-running-flux-on-nvidia-geforce-gt-710-gpu/97679)

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**Author:** [@Ritu\_Lahkar](https://discourse.julialang.org/u/Ritu_Lahkar)\
**Replies:** 3\
**Last updated:** [April 20, 2023, 3:41am UTC](https://discourse.julialang.org/t/help-in-running-flux-on-nvidia-geforce-gt-710-gpu/97679 "2023-04-20T03:41:32Z")

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I have a NVIDIA GeForce GT 710 GPU. I tried to run Flux on it using both julia 1.8 and 1.9. Both way I am getting: CUDNNError: CUDNN\_STATUS\_ARCH\_MISMATCH (code 6) Please help, how to solve it.

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## [Problem using Turing in Jupyter](https://discourse.julialang.org/t/problem-using-turing-in-jupyter/97624)

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**Author:** [@alexdmeyer](https://discourse.julialang.org/u/alexdmeyer)\
**Replies:** 1\
**Last updated:** [April 19, 2023, 10:44pm UTC](https://discourse.julialang.org/t/problem-using-turing-in-jupyter/97624 "2023-04-19T22:44:20Z")

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Hi Julia folks, I’m running into a strange issue using Turing.jl. I do most of my work in Atom, where Turing works just fine. However, recently I’ve been getting the following error below upon running using Turing in Ju…

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## [ModelingToolkit & Distributions for MLE estimation](https://discourse.julialang.org/t/modelingtoolkit-distributions-for-mle-estimation/97613)

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**Author:** [@dmetivie](https://discourse.julialang.org/u/dmetivie)\
**Replies:** 4\
**Last updated:** [April 19, 2023, 4:17pm UTC](https://discourse.julialang.org/t/modelingtoolkit-distributions-for-mle-estimation/97613 "2023-04-19T16:17:04Z")

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I am trying to use ModelingToolKit.jl to write a maximum loglikelihood estimator for generic distributions eg Univariate, Mixture, Multivariate etc. using ModelingToolkit, Optimization, OptimizationOptimJL using Distrib…

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## [Resize\_to\_layout!() does not remove margins around plots in GridLayout](https://discourse.julialang.org/t/resize-to-layout-does-not-remove-margins-around-plots-in-gridlayout/97365)

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**Author:** [@wsshin](https://discourse.julialang.org/u/wsshin)\
**Replies:** 5\
**Last updated:** [April 19, 2023, 3:46pm UTC](https://discourse.julialang.org/t/resize-to-layout-does-not-remove-margins-around-plots-in-gridlayout/97365 "2023-04-19T15:46:33Z")

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I use resize\_to\_layout!() to remove whatever margins around the plot in Figure after plotting. For example, the following code using CairoMakie fig = Figure() fig\[2,1\] = Axis(fig, aspect=DataAspect()) hm = heatmap!(ra…

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## [SDEProblem driven by two different NoiseProcess(es)](https://discourse.julialang.org/t/sdeproblem-driven-by-two-different-noiseprocess-es/97608)

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**Author:** [@tom-plaa](https://discourse.julialang.org/u/tom-plaa)\
**Replies:** 2\
**Last updated:** [April 19, 2023, 10:37am UTC](https://discourse.julialang.org/t/sdeproblem-driven-by-two-different-noiseprocess-es/97608 "2023-04-19T10:37:20Z")

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How can we pass two different driving noise processes for an SDEProblem? The goal is to simulate a simple system of SDE’s: dX(t) = f(X, Y, t)dt + g(X, Y, t)dZ\_1(t) + h(X, Y, t)dZ\_2(t) dY(t) = \\alpha(Y,t)dt + \\beta(Y,t)…

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## [Simplifying LP for repeated resolving](https://discourse.julialang.org/t/simplifying-lp-for-repeated-resolving/97528)

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**Author:** [@mikel8](https://discourse.julialang.org/u/mikel8)\
**Replies:** 13\
**Last updated:** [April 18, 2023, 9:00am UTC](https://discourse.julialang.org/t/simplifying-lp-for-repeated-resolving/97528 "2023-04-18T09:00:03Z")

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Hi all, I’m working on a problem that requires repeated resolving of a large LP with different objectives. The methodology I’m working on involves solving a first problem to optimality, then imposing an epsilon constrai…

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## [Interactive boxplot with GLMakie](https://discourse.julialang.org/t/interactive-boxplot-with-glmakie/97623)

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**Author:** [@ilkerarslan](https://discourse.julialang.org/u/ilkerarslan)\
**Replies:** 6\
**Last updated:** [April 18, 2023, 7:49pm UTC](https://discourse.julialang.org/t/interactive-boxplot-with-glmakie/97623 "2023-04-18T19:49:20Z")

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Hi. I am trying to create an interactive boxplot where the use selects the variable and the boxplot is updated accordingly. The code is like below: xs = @lift($dfbox\[: , 1\]) ys = @lift($dfbox\[:, 2\]) ax = Axis(fig\[1,1\]) …

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## [Label with Latex in CairoMakie](https://discourse.julialang.org/t/label-with-latex-in-cairomakie/97619)

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**Author:** [@Sergey\_Novak](https://discourse.julialang.org/u/Sergey_Novak)\
**Replies:** 2\
**Last updated:** [April 18, 2023, 7:22pm UTC](https://discourse.julialang.org/t/label-with-latex-in-cairomakie/97619 "2023-04-18T19:22:30Z")

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Hello! I tried place space between E and (Hz), I\_0, and (Hz) in the next code: f = Figure(resolution = (1300, 600)) ax\_bf = Axis(f\[1,1\]; ylabel = L"E (Hz)", xlabelsize = 35, ylabelsize = 35, xticklabelsiz…

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## [Does Zygote differentiate symbolically?](https://discourse.julialang.org/t/does-zygote-differentiate-symbolically/96528)

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**Author:** [@Euhan](https://discourse.julialang.org/u/Euhan)\
**Replies:** 27\
**Last updated:** [April 18, 2023, 8:52am UTC](https://discourse.julialang.org/t/does-zygote-differentiate-symbolically/96528 "2023-04-18T08:52:07Z")

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Sorry for posting this question in maybe-not-exactly-right category! This was my guess at group with biggest overlap with my question. My question is as simple as it says in the title. Does Zygote differentiate symbolic…

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## [Arrays of vector variables in definitions of nonlinear programs in JuMP](https://discourse.julialang.org/t/arrays-of-vector-variables-in-definitions-of-nonlinear-programs-in-jump/97593)

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**Author:** [@zdenek\_hurak](https://discourse.julialang.org/u/zdenek_hurak)\
**Replies:** 1\
**Last updated:** [April 18, 2023, 12:27am UTC](https://discourse.julialang.org/t/arrays-of-vector-variables-in-definitions-of-nonlinear-programs-in-jump/97593 "2023-04-18T00:27:15Z")

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Is it possible to define arrays of vector variables while building a nonlinear programming problem in JuMP? I know we can define a scalar variable through @variable(model,x) I also know we can define a vector variable…

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## [Compiling large Symbolics.jl expressions using build\_function](https://discourse.julialang.org/t/compiling-large-symbolics-jl-expressions-using-build-function/97563)

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**Author:** [@zornsllama](https://discourse.julialang.org/u/zornsllama)\
**Replies:** 4\
**Last updated:** [April 17, 2023, 11:14pm UTC](https://discourse.julialang.org/t/compiling-large-symbolics-jl-expressions-using-build-function/97563 "2023-04-17T23:14:03Z")

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Hi, I’m using Symbolics.jl to compute derivatives for a nonlinear optimization problem, to be used as part of the Ipopt callback functions. I am ultimately hoping to match the performance of the C++ code generated in th…

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## [GPU performance issues with an ML-from-scratch tutorial](https://discourse.julialang.org/t/gpu-performance-issues-with-an-ml-from-scratch-tutorial/97400)

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**Author:** [@oschulz](https://discourse.julialang.org/u/oschulz)\
**Replies:** 7\
**Last updated:** [April 17, 2023, 7:39pm UTC](https://discourse.julialang.org/t/gpu-performance-issues-with-an-ml-from-scratch-tutorial/97400 "2023-04-17T19:39:59Z")

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I put together (yet another) Julia ML-from-scratch tutorial for a machine learning course we held in Munich recently: GitHub - odsl-team/julia-ml-from-scratch: Machine learning from scratch in Julia It has very minimal …

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## [Entry point for contributing to climate modeling projects?](https://discourse.julialang.org/t/entry-point-for-contributing-to-climate-modeling-projects/48856)

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**Author:** [@crbinz](https://discourse.julialang.org/u/crbinz)\
**Replies:** 10\
**Last updated:** [April 17, 2023, 5:40pm UTC](https://discourse.julialang.org/t/entry-point-for-contributing-to-climate-modeling-projects/48856 "2023-04-17T17:40:07Z")

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I’d like to spend some of my free time contributing to projects that help address the issue of climate change. My background is that I have (basically) no domain knowledge at all, but I have julia and modeling/simulation…

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## [Turing & DifferentialEquations - memory allocation](https://discourse.julialang.org/t/turing-differentialequations-memory-allocation/97570)

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**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 3\
**Last updated:** [April 17, 2023, 2:28pm UTC](https://discourse.julialang.org/t/turing-differentialequations-memory-allocation/97570 "2023-04-17T14:28:42Z")

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I use Turing for MCMC on a simple DAE, and the computation time is in the order of 4.6 hours with apparently extreme memory allocation. My dynamic model has 3 differential equations and 3 linear algebraic equations – wi…

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## [Convert directed MetaGraphs object to networkX?](https://discourse.julialang.org/t/convert-directed-metagraphs-object-to-networkx/97358)

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**Author:** [@mkarikom](https://discourse.julialang.org/u/mkarikom)\
**Replies:** 1\
**Last updated:** [April 16, 2023, 6:04pm UTC](https://discourse.julialang.org/t/convert-directed-metagraphs-object-to-networkx/97358 "2023-04-16T18:04:37Z")

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I’m trying to export a bunch of edge/node annotations to NetworkX so I can use PyVis. Has anyone tried this?

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## [Diagonal noise with specified noise process in solve (Ornstein Uhlenbeck)](https://discourse.julialang.org/t/diagonal-noise-with-specified-noise-process-in-solve-ornstein-uhlenbeck/97501)

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**Author:** [@nkoch](https://discourse.julialang.org/u/nkoch)\
**Replies:** 3\
**Last updated:** [April 16, 2023, 12:16pm UTC](https://discourse.julialang.org/t/diagonal-noise-with-specified-noise-process-in-solve-ornstein-uhlenbeck/97501 "2023-04-16T12:16:45Z")

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Hello, I am trying to simulate a SDE problem with diagonal noise specifically Orstein Uhlenbeck noise, however I am only able to get scalar noise when specifying the noise process in SDEProblem (i.e. one noise process in…

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## [Reading and writing HDF5 compound-typed array datasets](https://discourse.julialang.org/t/reading-and-writing-hdf5-compound-typed-array-datasets/97516)

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**Author:** [@airpmb](https://discourse.julialang.org/u/airpmb)\
**Replies:** 3\
**Last updated:** [April 16, 2023, 2:33am UTC](https://discourse.julialang.org/t/reading-and-writing-hdf5-compound-typed-array-datasets/97516 "2023-04-16T02:33:46Z")

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I wanted to write vectors of LabelledArrays to HDF5 files, preserving the labels, and be able to read these back and reconstruct the original data. My data is pretty much entirely numeric. I’ve found it hard to find any…

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## [Video created by VideoIO.jl doesn't display properly on Android WhatsApp](https://discourse.julialang.org/t/video-created-by-videoio-jl-doesnt-display-properly-on-android-whatsapp/97492)

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**Author:** [@marcsgil](https://discourse.julialang.org/u/marcsgil)\
**Replies:** 1\
**Last updated:** [April 15, 2023, 5:54am UTC](https://discourse.julialang.org/t/video-created-by-videoio-jl-doesnt-display-properly-on-android-whatsapp/97492 "2023-04-15T05:54:00Z")

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Hello! I’m trying to share some videos I generated using VideoIO.jl on WhatsApp. Although the videos work well on WhatsApp Web and WhatsApp iOS, I’m encountering some strange issues when I try to play them on my Android…

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