# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=107

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**Page:** 108

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## [Simultaneous movement of agents with EventQueueABM?](https://discourse.julialang.org/t/simultaneous-movement-of-agents-with-eventqueueabm/115168)

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**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\
**Replies:** 1\
**Last updated:** [June 4, 2024, 1:15pm UTC](https://discourse.julialang.org/t/simultaneous-movement-of-agents-with-eventqueueabm/115168 "2024-06-04T13:15:24Z")

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For my current output it seems particles movements are sequential in nature though I want it to be simultaneously. It looks like they are stepping rather then floating. Main thing you would want to look into my move!…

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## [Continuous time (EventQueueABM) Agent based model - Method Error](https://discourse.julialang.org/t/continuous-time-eventqueueabm-agent-based-model-method-error/115163)

<div class="topic-metadata">

**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\
**Replies:** 1\
**Last updated:** [June 4, 2024, 11:41am UTC](https://discourse.julialang.org/t/continuous-time-eventqueueabm-agent-based-model-method-error/115163 "2024-06-04T11:41:54Z")

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Hello, Im working on this following example where I want particles to just move around and thats all to get started. Though I got Error even before a proper start. Will be helpful if someone can point cause. Im sure its …

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## [Incorrect interpolation on non regular grid](https://discourse.julialang.org/t/incorrect-interpolation-on-non-regular-grid/115161)

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**Author:** [@Jakub\_Mitura](https://discourse.julialang.org/u/Jakub_Mitura)\
**Replies:** 1\
**Last updated:** [June 4, 2024, 11:16am UTC](https://discourse.julialang.org/t/incorrect-interpolation-on-non-regular-grid/115161 "2024-06-04T11:16:51Z")

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I am trying to interpolate a point in 3-dimensional array with arbitrary spacing (distance between each point in real world coordinates). I had used scaled interpolation from Interpolations.jl . However as code below sho…

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## [ModelEvent in continous time model?](https://discourse.julialang.org/t/modelevent-in-continous-time-model/115153)

<div class="topic-metadata">

**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\
**Replies:** 5\
**Last updated:** [June 4, 2024, 8:54am UTC](https://discourse.julialang.org/t/modelevent-in-continous-time-model/115153 "2024-06-04T08:54:06Z")

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Hello, I have been working with discrete model type in agents.jl. There we have agent\_step and model\_step functions to work at model or agent level. Now I want to switch to continous time models. i was checking example …

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## [Fitting normal-inverse-wishart](https://discourse.julialang.org/t/fitting-normal-inverse-wishart/73273)

<div class="topic-metadata">

**Author:** [@Paul\_McVay](https://discourse.julialang.org/u/Paul_McVay)\
**Replies:** 4\
**Last updated:** [June 4, 2024, 10:06am UTC](https://discourse.julialang.org/t/fitting-normal-inverse-wishart/73273 "2024-06-04T10:06:38Z")

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What library (and method) is recommended for taking a sequence of mean-vectors and covariance matrices and fitting a normal-inverse-wishart distribution? For example, my data is a vector of tuples where the first elemen…

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## [SumOfSquares with BigFloat](https://discourse.julialang.org/t/sumofsquares-with-bigfloat/115009)

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**Author:** [@jezzaparker](https://discourse.julialang.org/u/jezzaparker)\
**Replies:** 2\
**Last updated:** [June 4, 2024, 9:22am UTC](https://discourse.julialang.org/t/sumofsquares-with-bigfloat/115009 "2024-06-04T09:22:18Z")

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I’m trying to use SumOfSquares with arbitrary precision. Is this possible? if I do model = GenericModel{BigFloat}(COSMO.Optimizer{BigFloat}) #... @constraint(model, con1 in SOSCone()) where con1 is a Polynomial{Dy…

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## [Maximum number of threads in Polyester.jl](https://discourse.julialang.org/t/maximum-number-of-threads-in-polyester-jl/115135)

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**Author:** [@Lisette\_de\_Bruin](https://discourse.julialang.org/u/Lisette_de_Bruin)\
**Replies:** 1\
**Last updated:** [June 4, 2024, 8:35am UTC](https://discourse.julialang.org/t/maximum-number-of-threads-in-polyester-jl/115135 "2024-06-04T08:35:11Z")

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Hi, I set the number of threads before I start up Julia by using the command: $env:JULIA\_NUM\_THREADS=16 before I start Julia. Then, I use the macro @batch from Polyester.jl, which evaluates a for-loop on multiple thread…

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## [Periodic boundary conditions with MethodOfLines not working](https://discourse.julialang.org/t/periodic-boundary-conditions-with-methodoflines-not-working/115123)

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**Author:** [@dbox](https://discourse.julialang.org/u/dbox)\
**Replies:** 1\
**Last updated:** [June 4, 2024, 7:37am UTC](https://discourse.julialang.org/t/periodic-boundary-conditions-with-methodoflines-not-working/115123 "2024-06-04T07:37:05Z")

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I’m trying to use a basic advection/diffusion equation with MethodOfLines.jl. I have an initial condition which is a Gaussian shaped density, and I’m struggling to get periodic boundary conditions to work. My initial …

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## [Plots... too close dots in :dot linestyle?](https://discourse.julialang.org/t/plots-too-close-dots-in-dot-linestyle/115102)

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**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 2\
**Last updated:** [June 4, 2024, 7:12am UTC](https://discourse.julialang.org/t/plots-too-close-dots-in-dot-linestyle/115102 "2024-06-04T07:12:51Z")

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Any updates on dot-distance in Plots? I’m using the latest version of Plots, with the default backend (GR). The dot distance is so small that it almost looks like a solid line…

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## [Variable sized windows for moving average](https://discourse.julialang.org/t/variable-sized-windows-for-moving-average/115078)

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**Author:** [@feanor12](https://discourse.julialang.org/u/feanor12)\
**Replies:** 8\
**Last updated:** [June 4, 2024, 6:19am UTC](https://discourse.julialang.org/t/variable-sized-windows-for-moving-average/115078 "2024-06-04T06:19:56Z")

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Hi, I saw some libraries for moving averages (RollingFunctions.jl), but I did not find one with the option to make the window size variable. My specific case would be a moving average over a “time series”, averaging the…

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## [Compatible Gurobi with Julia 1.10.3](https://discourse.julialang.org/t/compatible-gurobi-with-julia-1-10-3/115148)

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**Author:** [@benjamin.nunez](https://discourse.julialang.org/u/benjamin.nunez)\
**Replies:** 1\
**Last updated:** [June 4, 2024, 3:42am UTC](https://discourse.julialang.org/t/compatible-gurobi-with-julia-1-10-3/115148 "2024-06-04T03:42:32Z")

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Hi! I am working with Julia version 1.10.3. Does anyone know which is the latest version of Gurobi that is compatible with this version of Julia? Alternatively, does anyone know how I can find this information? Thank y…

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## [Is there any easy-to-use parallel linear solver in Julia?](https://discourse.julialang.org/t/is-there-any-easy-to-use-parallel-linear-solver-in-julia/95867)

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**Author:** [@maphdze](https://discourse.julialang.org/u/maphdze)\
**Replies:** 5\
**Last updated:** [June 3, 2024, 10:02pm UTC](https://discourse.julialang.org/t/is-there-any-easy-to-use-parallel-linear-solver-in-julia/95867 "2024-06-03T22:02:13Z")

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I am wondering that if there are some easy-to-use parallel linear solvers in Julia? I have tried MUMPS.jl, but if you want to parallelize it, you have to use MPI.jl, then other parts of the code will be executed ‘number…

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## [Mismatch between nextfloat(0.0) and eps(Float64)](https://discourse.julialang.org/t/mismatch-between-nextfloat-0-0-and-eps-float64/115104)

<div class="topic-metadata">

**Author:** [@Guillermo\_C](https://discourse.julialang.org/u/Guillermo_C)\
**Replies:** 6\
**Last updated:** [June 3, 2024, 6:21pm UTC](https://discourse.julialang.org/t/mismatch-between-nextfloat-0-0-and-eps-float64/115104 "2024-06-03T18:21:14Z")

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Dear Julia community, I am testing the representation of floating point values in my machine. This is the behavior I am seeing: julia\> x = 0.0 0.0 help?\> x (...) x is of type Float64 (...) julia\> nextfloat(x) 5.0e-324 …

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## [Lines plot artifacts with GLMakie v0.10.2 on julia 1.10.3 (win10)](https://discourse.julialang.org/t/lines-plot-artifacts-with-glmakie-v0-10-2-on-julia-1-10-3-win10/114933)

<div class="topic-metadata">

**Author:** [@devel-chm](https://discourse.julialang.org/u/devel-chm)\
**Replies:** 2\
**Last updated:** [June 3, 2024, 6:04pm UTC](https://discourse.julialang.org/t/lines-plot-artifacts-with-glmakie-v0-10-2-on-julia-1-10-3-win10/114933 "2024-06-03T18:04:29Z")

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I was plotting some curves with a lot of low level noise with GLMakie and the plots had a lot of extra line cruft as if the line segments for the lines in the plot were not being correctly handled. A MWE for the ab…

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## [Simple CUDA kernel on matrix slower than running GPU](https://discourse.julialang.org/t/simple-cuda-kernel-on-matrix-slower-than-running-gpu/115018)

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**Author:** [@jlbosse](https://discourse.julialang.org/u/jlbosse)\
**Replies:** 8\
**Last updated:** [June 3, 2024, 12:27pm UTC](https://discourse.julialang.org/t/simple-cuda-kernel-on-matrix-slower-than-running-gpu/115018 "2024-06-03T12:27:21Z")

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I am trying to write a simple CUDA kernel that swaps pairs of columns in a square matrix and puts a sign on one of them: using CUDA, BenchmarkTools function swap\_and\_sign!(A::Matrix) n = size(A, 1) ÷ 2 for i in…

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## [What are the four numbers in the \`linestyle\` vector?](https://discourse.julialang.org/t/what-are-the-four-numbers-in-the-linestyle-vector/115106)

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**Author:** [@ryofurue](https://discourse.julialang.org/u/ryofurue)\
**Replies:** 3\
**Last updated:** [June 3, 2024, 12:15pm UTC](https://discourse.julialang.org/t/what-are-the-four-numbers-in-the-linestyle-vector/115106 "2024-06-03T12:15:15Z")

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What are the four numbers in line!( . . . ; linestyle = Linestyle(\[0.5, 1.0, 1.5, 2.5\]), . . . ) found in this documentation ? I tried this linestyle and got dashed lines, but I’ve got stuck there because I don’t know…

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## [Domain Error when using Zygote to differentiate MultiStart minimization](https://discourse.julialang.org/t/domain-error-when-using-zygote-to-differentiate-multistart-minimization/115013)

<div class="topic-metadata">

**Author:** [@paul188](https://discourse.julialang.org/u/paul188)\
**Replies:** 2\
**Last updated:** [June 3, 2024, 12:05pm UTC](https://discourse.julialang.org/t/domain-error-when-using-zygote-to-differentiate-multistart-minimization/115013 "2024-06-03T12:05:57Z")

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I have the following MWE, with most of the code just copied from the MultiStartOptimization.jl documentation: using Optimization, OptimizationMultistartOptimization, OptimizationNLopt using Zygote using ForwardDiff ros…

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## [How to build a bi-LSTM in Flux.jl 0.14](https://discourse.julialang.org/t/how-to-build-a-bi-lstm-in-flux-jl-0-14/115114)

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**Author:** [@NeroBlackstone](https://discourse.julialang.org/u/NeroBlackstone)\
**Replies:** 0\
**Last updated:** [June 3, 2024, 11:28am UTC](https://discourse.julialang.org/t/how-to-build-a-bi-lstm-in-flux-jl-0-14/115114 "2024-06-03T11:28:03Z")

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There is currently a wrapper layer waiting to be merged, but it has not been updated in several years. There is also an early speech recognition example in the Model Zoo, but it only supports Flux 0.6 and Flux 0.10. So…

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## [Using the gradient of wrt the input in the loss function](https://discourse.julialang.org/t/using-the-gradient-of-wrt-the-input-in-the-loss-function/114983)

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**Author:** [@alekssek](https://discourse.julialang.org/u/alekssek)\
**Replies:** 6\
**Last updated:** [June 2, 2024, 10:33am UTC](https://discourse.julialang.org/t/using-the-gradient-of-wrt-the-input-in-the-loss-function/114983 "2024-06-02T10:33:07Z")

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I have attempted this for a few days but I can not figure out how to do this. Basically I am attempting to adapt a hamiltonian neural network (hnn), which requires the following loss function: Loss = || dH/dq - dq/dt||\_2…

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## [Understanding parallelization of composite types](https://discourse.julialang.org/t/understanding-parallelization-of-composite-types/115077)

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**Author:** [@michael2](https://discourse.julialang.org/u/michael2)\
**Replies:** 0\
**Last updated:** [June 2, 2024, 11:46am UTC](https://discourse.julialang.org/t/understanding-parallelization-of-composite-types/115077 "2024-06-02T11:46:35Z")

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Suppose we have a Vector{MyStruct} with the following definition: mutable struct MyStruct x::Float64 end Obviously, this is a vastly simplified example. Now, we have a function that manipulates our struct in-place…

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## [Understanding the transition from memory bound to compute bound in ParallelStencil.jl](https://discourse.julialang.org/t/understanding-the-transition-from-memory-bound-to-compute-bound-in-parallelstencil-jl/114841)

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**Author:** [@taketwicedailey](https://discourse.julialang.org/u/taketwicedailey)\
**Replies:** 3\
**Last updated:** [June 2, 2024, 8:04am UTC](https://discourse.julialang.org/t/understanding-the-transition-from-memory-bound-to-compute-bound-in-parallelstencil-jl/114841 "2024-06-02T08:04:57Z")

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Hi, I am interested in using ParallelStencil.jl to perform finite differencing based simulations. I started by doing experiments with the acoustic waves app, and comparing CPU vs GPU run times. I found that for the stock…

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## [Makie on(Observable) combo triggers multiple times](https://discourse.julialang.org/t/makie-on-observable-combo-triggers-multiple-times/115039)

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**Author:** [@oscarvdvelde](https://discourse.julialang.org/u/oscarvdvelde)\
**Replies:** 5\
**Last updated:** [June 1, 2024, 3:30pm UTC](https://discourse.julialang.org/t/makie-on-observable-combo-triggers-multiple-times/115039 "2024-06-01T15:30:16Z")

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I made a data visualization tool with Makie where observables watch my axis.finallimits selection to update the selected indices, which then triggers the plotting. This involves two on() blocks. The problem is that it t…

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## [Makie - can one control individual \`yticklabelcolor\`](https://discourse.julialang.org/t/makie-can-one-control-individual-yticklabelcolor/114380)

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**Author:** [@alex-s-gardner](https://discourse.julialang.org/u/alex-s-gardner)\
**Replies:** 5\
**Last updated:** [June 1, 2024, 8:45am UTC](https://discourse.julialang.org/t/makie-can-one-control-individual-yticklabelcolor/114380 "2024-06-01T08:45:12Z")

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I think I know the answer \[No\] but maybe someone knows of a hack. I’m looking to set differing colors for individual yticklabels in makie Specifically I’d like to set “icesat2”, “icesat”, “gedi” and “hugonnet” labels t…

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## [Problem of memory usage with MLJ+LightGBM and grid search](https://discourse.julialang.org/t/problem-of-memory-usage-with-mlj-lightgbm-and-grid-search/112147)

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**Author:** [@julien\_goo](https://discourse.julialang.org/u/julien_goo)\
**Replies:** 10\
**Last updated:** [June 1, 2024, 4:51am UTC](https://discourse.julialang.org/t/problem-of-memory-usage-with-mlj-lightgbm-and-grid-search/112147 "2024-06-01T04:51:43Z")

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Hi all, We are building an application of ML using MLJ and LightGBM (for the ML part) to perform some forecasts on complex time series (for a quite critical business need, in production with daily use) We have a blocki…

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## [Visualization of shapefile - Meshes.jl viz! very slow](https://discourse.julialang.org/t/visualization-of-shapefile-meshes-jl-viz-very-slow/114485)

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**Author:** [@oscarvdvelde](https://discourse.julialang.org/u/oscarvdvelde)\
**Replies:** 21\
**Last updated:** [June 1, 2024, 2:28am UTC](https://discourse.julialang.org/t/visualization-of-shapefile-meshes-jl-viz-very-slow/114485 "2024-06-01T02:28:27Z")

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Hi. I am switching from using a low resolution GeoJSON file of the entire world (size 23 MB), which was used in the example given by GeoMakie, to a higher resolution shapefile of two countries (using Meshes I merged FRA\_…

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## [Fresh CUDA and LuxCUDA error ERROR: could not load symbol "cublasLtMatmulDescCreate":](https://discourse.julialang.org/t/fresh-cuda-and-luxcuda-error-error-could-not-load-symbol-cublasltmatmuldesccreate/114401)

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**Author:** [@dmetivie](https://discourse.julialang.org/u/dmetivie)\
**Replies:** 14\
**Last updated:** [May 31, 2024, 4:41pm UTC](https://discourse.julialang.org/t/fresh-cuda-and-luxcuda-error-error-could-not-load-symbol-cublasltmatmuldesccreate/114401 "2024-05-31T16:41:22Z")

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From Lux polynomial fitting tutorial I get during the training step ERROR: could not load symbol "cublasLtMatmulDescCreate": The specified procedure could not be found. I did the Cuda.test() and got errors core/nvml …

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## [How to open sub-directory of HDF5 file in Julia?](https://discourse.julialang.org/t/how-to-open-sub-directory-of-hdf5-file-in-julia/115010)

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**Author:** [@raman\_kumar](https://discourse.julialang.org/u/raman_kumar)\
**Replies:** 5\
**Last updated:** [May 31, 2024, 3:27pm UTC](https://discourse.julialang.org/t/how-to-open-sub-directory-of-hdf5-file-in-julia/115010 "2024-05-31T15:27:38Z")

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I want to open sub-directory of HDF5 file in Julia? For example- how can i open "Coordinates" folder using HDF5.jl?

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## [Efficient multi-objective LP implementation](https://discourse.julialang.org/t/efficient-multi-objective-lp-implementation/114615)

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**Author:** [@PaterPen](https://discourse.julialang.org/u/PaterPen)\
**Replies:** 5\
**Last updated:** [May 31, 2024, 1:22pm UTC](https://discourse.julialang.org/t/efficient-multi-objective-lp-implementation/114615 "2024-05-31T13:22:45Z")

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Hi, I want to solve the following problem (maximum flow with losses): For a graph with source node s and target node t let \\forall v \\notin \\{s,t\\}: \\sum\_{u} f\_{u, v} = \\sum\_u \\alpha\_{v,u} f\_{v, u} where \\alpha\_{v,u} =…

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## [Bug with solvers for stiffness in version 6.80.1 of OrdinaryDiffEq](https://discourse.julialang.org/t/bug-with-solvers-for-stiffness-in-version-6-80-1-of-ordinarydiffeq/114990)

<div class="topic-metadata">

**Author:** [@Alergy](https://discourse.julialang.org/u/Alergy)\
**Replies:** 1\
**Last updated:** [May 31, 2024, 12:12am UTC](https://discourse.julialang.org/t/bug-with-solvers-for-stiffness-in-version-6-80-1-of-ordinarydiffeq/114990 "2024-05-31T00:12:49Z")

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These days I have been using Rosenbrock23() with OrdinaryDiffEq v6.75.0 without any bugs. Recently I upgraded to OrdinaryDiffEq v6.80.1 and it just broke. Here is a MWE: using OrdinaryDiffEq function dudt(du, u, p, t) …

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## [Getting bin values from histogram](https://discourse.julialang.org/t/getting-bin-values-from-histogram/114985)

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**Author:** [@bsuwal](https://discourse.julialang.org/u/bsuwal)\
**Replies:** 1\
**Last updated:** [May 30, 2024, 9:00pm UTC](https://discourse.julialang.org/t/getting-bin-values-from-histogram/114985 "2024-05-30T21:00:27Z")

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I wish to get the values of the bins in a histogram I make using Plots.jl. For example, if I use the following sample code using Plots data = randn(100) histogram(data, normalize=:probability) I wish to learn what the…

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