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

Topic		Replies	Views
Kronecker times vector with special structure Numerics question	10	739	July 5, 2020
Fastest matrix multiplication General Usage mkl , linearalgebra , matrix	20	1627	February 19, 2024
Fast computation of row-wise Kronecker product (Khatri-Rao product) Performance question , performance	5	1276	April 8, 2021
Mul! vs * benchmarks Performance linearalgebra , sparse , matrices	2	747	February 20, 2024
Kron and shared data, not the right amount of sharing? General Usage question	1	324	December 6, 2020

Micro benchmarks of kron for vectors

Related topics