# OpenBLAS vs MKL

**URL:** <https://discourse.julialang.org/t/openblas-vs-mkl/17362>\
**Category:** General Usage\
**Tags:** mkl\
**Created:** [November 9, 2018, 8:19pm UTC](https://discourse.julialang.org/t/openblas-vs-mkl/17362 "2018-11-09T20:19:19Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![carstenbauer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/carstenbauer/32/4981_2.png) [@carstenbauer](https://discourse.julialang.org/u/carstenbauer)\
**Post date:** [November 10, 2018, 1:37am UTC](https://discourse.julialang.org/t/openblas-vs-mkl/17362/4 "2018-11-10T01:37:14Z")

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> [@davidbp](#):
>
> It would be nice for you to share this but for matrices of different sizes. `(10,10), (100,100), (500,500), (1000,1000), (10000,10000)` maybe MKL is very good for some sizes but not others.

![openblas_vs_mkl](https://global.discourse-cdn.com/julialang/original/3X/5/f/5f5dbed941a2a57409ff9a001e66fe08ee84f8e0.png) ![timings](https://global.discourse-cdn.com/julialang/original/3X/4/a/4a6e6ae7c7f26634289dc3e59f2e13a778d3b9cc.png)

> [@davidbp](#):
>
> In any case a 4x is relevant but not an insane number. Unless your code is completely dominated by matrix multiplications it won’t be such a big deal.

My code is completely dominated by matrix multiplications.

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