# Flux and cpu cores

**URL:** <https://discourse.julialang.org/t/flux-and-cpu-cores/45318>\
**Category:** Machine Learning\
**Tags:** parallel, multithreading, flux\
**Created:** [August 21, 2020, 10:53am UTC](https://discourse.julialang.org/t/flux-and-cpu-cores/45318 "2020-08-21T10:53:12Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Elrod](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/elrod/32/22461_2.png) [@Elrod](https://discourse.julialang.org/u/Elrod)\
**Post date:** [August 26, 2020, 2:35pm UTC](https://discourse.julialang.org/t/flux-and-cpu-cores/45318/5 "2020-08-26T14:35:31Z")

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> [@Tomas\_Pevny](#):
>
> I think that if you use multi-threadding, it would automatically set the number of threads for OpenBlas to one.

You [have to do this manually](https://discourse.julialang.org/t/why-doesnt-multithreading-help-here/45286/10). (When comparing the charts, note the different scales on the x-axis!)

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