I found MKL is ~1.5 times slower than openblas for matrix-matrix multiplication (both without multithreading). Since I’m using intel CPU, I expected MKL to be faster. Is there anything obviously wrong in this benchmark? Or is it not unexpected for MKL to be slower than openblas? using LinearAlgebr…

I can’t reproduce. 7.244 ms (0 allocations: 0 bytes) OpenBLAS 4.748 ms (0 allocations: 0 bytes) MKL (0.5.0) On an 11 days old Julia 1.8.0-DEV with Intel CPU: Julia Version 1.8.0-DEV.1572 Commit 7889b2a6a2 (2022-02-16 21:17 UTC) Platform Info: OS: Windows (x86_64-w64-mingw32) CPU: 8 × In…

MKL slower than openblas in intel cpu

General Usage Performance

ImreSamu February 28, 2022, 5:31am 4

With MKL.jl v0.5.0? (released this 2 days ago)
Could you please test with the new Julia v1.8.0-beta1

1 Like

Topic		Replies	Views
OpenBLAS vs MKL General Usage mkl	7	15725	January 16, 2020
OpenBLAS is faster than Intel MKL on AMD Hardware (Ryzen) Performance blas , lapack	40	36348	June 19, 2020
Poor openBLAS performance for large matrix multiply? New to Julia openblas	17	1159	April 4, 2025
How to circumvent Intel's AMD discrimination in MKL from v1.7 onwards? General Usage mkl , linearalgebra	2	3022	May 16, 2025
LinearAlgebra.inv matrix inversion slower than MATLAB? Performance performance	21	2117	October 25, 2021

MKL slower than openblas in intel cpu

Related topics