Updating DistributedArray using the primitive DArray constructor
The following syntax is demonstrated in the manual: DArray(size(d),procs(d)) do I ... end I haven’t seen a loop like this before. What is I? 1 post - 1 participant Read full topic
View ArticleGet type containing the types of a set?
Given a set of variables [a,b,c...], I want to find the type T such that typeof(a)<:T, typeof(b)<:T, .... The reason I want to do this is that I have cache variables in my ODE system, which need...
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Met a weird error; UndefVarError
Hi, I’m now writing my codes and encountered a really strange error: image2503×450 67.6 KB As can be seen, the error said "obj_path_tmp not defined". However, in debugging mode (using Debugger), I can...
View ArticleHow to build julia with existing llvm compiler
Hi, i have latest llvm compiler (v 12.0.0) on my pc. how to build julia with it? 3 posts - 2 participants Read full topic
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Why Base.@kwdef is not exported?
Hi. I have a small question about Base.@kwdef. I think this macro is very useful, already many packages are using Base.@kwdef. GitHub Build software better, together GitHub is where people build...
View ArticleDefinition of floor
Hi, In base/float.jl I don’t understand the definition of floor: Here floor(::Type{T}, x::AbstractFloat) where {T<:Integer} = trunc(T,round(x, RoundDown)) I don’t get the round. What I understood...
View ArticleFail lauching JuliaPro in ubuntu server 1804
Hi, I am new to Julia, yet quite excited about it. After successfully installed on my Win10 notebook, I eager to install it on my office ubuntu server (1804). With the instruction of [JuliaPro Quick...
View ArticleCan't get right ranks when using non-blocking MPI.Irecv!()
I am trying to let rank 0 get other rank indexes, but I got different results from MPI.Irecv!() and MPI.Recv() , and result from MPI.Irecv!() seems odd: import MPI function main() MPI.Init() comm =...
View ArticleMacro for decorator (wrapper) in Python
Greetings, What I’m trying to do can be expressed as a Python code like this: def is_convex_repr(is_convex): def wrapper(func): func.is_convex = is_convex return func return wrapper...
View ArticleError installing package using pkg.julialang.org, error with unpack, 7z.exe
setup: Julia 1.5.1, win 10. When trying to install packages using server ‘pkg.julialang.org’ I am getting error in unpacking download files. I think the error happens with ‘unpack’ call github.com...
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Spilt column and save into different column
hoDATAMANGLING674×746 104 KB SOLVE E PART 8 posts - 4 participants Read full topic
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Recursive macro call
As an exercise, I’m trying to make a macro that turns @x a b c into a = b = c = 1234. I tried to write it recursively, but I don’t know how to fix my error Definition: julia> macro x(s::Symbol,...
View ArticleDon't understand behaviour of NamedTuple{...,Tuple{...,T}} where T
Here’s an example to enter in the REPL. I don’t understand the behaviour of Z(x) below. I’m using Julia 1.4.2. julia> Y = NamedTuple{(:a,:b), Tuple{String,Real}} julia> Z = NamedTuple{(:a,:b),...
View ArticleInstalling Julia System Wide
I’m using Windows 10 on my desktop machine and I would like to install Julia system wide. When I follow the instructions to right click and run as administrator, it still wants to install it in my...
View ArticleVariables not recalculating while reloading modules
I have a module that i use to input some parameters (used in multiple functions etc, and I did not want to rewrite everywhere). They are lightly manipulated (basic scaling etc) and exported to various...
View ArticlePermutedDimsArray slower than permutedims?
I’m struggling to understand why one function for multiplying a batch of matrices with a single matrix is significantly slower than another. The only difference between the functions is that...
View ArticleSmoothing Spline with Optimized Knots
I have some (x,y) data with equally-spaced x’s. I would like to smooth the data using (up to) 4 cubic splines and obtain the equations for each spline. I would like the knots connecting the splines to...
View ArticleChanging the default solving loop condition in DifferentialEquations.jl
Hi all! I’m trying to implement a solver that will stop if one of the variables passes a certain value instead of time-stepping (I may thus change the title of this topic). Say e.g. u[1] < 0 ||...
View ArticleHow to keep result one-dimensional even after multiplication?
I am trying several functions who include vectors as variable. The variable (x) is x= [2.0:0.5:5.0;] I like to define the following kinds of functions: f(x) = (x .+ 0.07im)/2.3; g(x) = (1/f(x)).^2...
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How to import this kind of file properly?
Hi! I have a bit of an unusual csv file (for me atleast). It is structured as such: image1487×334 21.5 KB Pos X/Y/Z [m]: 0 0 -1.2 0 0 -1.188 0 0 -1.176 Part Time [s] Vel_0.x [m/s] Vel_0.y [m/s]...
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