Hi, I want to write a function to generate random matrices with size 20x20. I need to use this function frequently but I don’t need to change the matrices generated by it. So the StaticArrays seem to be a good choice. But I further notice that it only works for arrays less than 100. Is there any wa…

[image] jiyashxi: But I further notice that it only works for arrays less than 100. I why? julia> SMatrix{20,20}(rand(20,20)) 20×20 SMatrix{20, 20, Float64, 400} with indices SOneTo(20)×SOneTo(20): #or julia> @SMatrix(rand(20,20)) 20×20 SMatrix{20, 20, Float64, 400} with indices SOneTo(20)…

1000x1000 is quite different from 20x20

Compile and runtime performance may be bad.

[image] jiyashxi: I want to write a function to generate random matrices with size 20x20. I need to use this function frequently but I don’t need to change the matrices generated by it. What do you do with the matrices later? Allocating a single (standard) Matrix at the start of the procedure…

Hi I basically want to generate some haar random unitary matrices. The code I used before is like using StaticArrays using LinearAlgebra using StatsBase using Random function rand_haar2(::Val{n}) where n M = @SMatrix randn(ComplexF64,n,n) q = qr(M).Q L = cispi.(2 .* @SVector(rand(Flo…

[image] jiyashxi: I am using the version without static arrays. In the version without StaticArrays, you don’t need the n to be known statically, i.e. enclosed in a Val. This will only slow down compilation. Moreover, you will be better off reusing the memory you create, like so: using Linea…

Static matrix with size 400

New to Julia

jiyashxi May 4, 2024, 6:21pm 3

I found it in this discussion. Large matrix crashes StaticArrays. Maybe things changed. Thanks for this check. I will try it myself

1 Like

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Static matrix with size 400

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