Edit: corrected according to @jling `s comment Inspired by another thread here is a micro benchmark of Base.kron for Vector using LinearAlgebra using BenchmarkTools function _kron(A::Matrix, B::Matrix) C = zeros(size(A,1) * size(B,1), size(A,2) * size(B,2)) for i = 1:size(A, 1) fo…

I think there’s no implementation for kron of vectors, it just reshapes to use the one for matrices. And there’s some overhead to that which, for very very small arrays, becomes the dominant time. julia> size© # vector case (4,) julia> @btime _kron!($C, $A, $B); min 11.136 ns, mean 11.307 ns (0…

Micro benchmarks of kron for vectors

General Usage Performance

goerch November 17, 2021, 10:58pm 5

No, it tries to compare both (inplace and allocated) of Base.kron to naive versions.

Outperformed by Matlab

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Micro benchmarks of kron for vectors

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