# Change threads number in Juno

**URL:** https://discourse.julialang.org/t/change-threads-number-in-juno/4343
**Category:** New to Julia
**Created:** [June 19, 2017, 7:03am UTC](https://discourse.julialang.org/t/change-threads-number-in-juno/4343 "2017-06-19T07:03:30Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![rveltz](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rveltz/32/2707_2.png) [@rveltz](https://discourse.julialang.org/u/rveltz)
#### Post date: [June 19, 2017, 7:03am UTC](https://discourse.julialang.org/t/change-threads-number-in-juno/4343/1 "2017-06-19T07:03:31Z")

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Hi,

Is there a way to change threads number in Juno?

Thank you

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### Author: ![pfitzseb](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pfitzseb/32/45566_2.png) [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)
#### Post date: [June 19, 2017, 9:45am UTC](https://discourse.julialang.org/t/change-threads-number-in-juno/4343/2 "2017-06-19T09:45:55Z")

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Yes, Juno 0.6 has a “Number of Threads” setting (which you can access via `Julia -> Settings` or Ctrl-JCtrl-, (replace Ctrl by Cmd on Macs)):

![](https://global.discourse-cdn.com/julialang/original/3X/3/b/3b2f441f2cd024e2c32570d3a2ffd39c6a9729d5.png)

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### Author: ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)
#### Post date: [June 20, 2017, 3:09am UTC](https://discourse.julialang.org/t/change-threads-number-in-juno/4343/3 "2017-06-20T03:09:33Z")

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Told you the people would want it hehe

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### Author: ![randyzwitch](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/randyzwitch/32/15955_2.png) [@randyzwitch](https://discourse.julialang.org/u/randyzwitch)
#### Post date: [June 21, 2017, 7:20pm UTC](https://discourse.julialang.org/t/change-threads-number-in-juno/4343/4 "2017-06-21T19:20:21Z")

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Is there a recommendation for number of threads or a heuristic to try ( like 1 thread per core)?

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### Author: ![adamslc](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/adamslc/32/3452_2.png) [@adamslc](https://discourse.julialang.org/u/adamslc)
#### Post date: [June 21, 2017, 8:41pm UTC](https://discourse.julialang.org/t/change-threads-number-in-juno/4343/5 "2017-06-21T20:41:15Z")

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My first guess would probably be 2 threads per physical core (to account for hyperthreads), but you should probably also do some testing to see if that number is too high or too low.