# Multithreaded broadcast?

**URL:** <https://discourse.julialang.org/t/multithreaded-broadcast/26786>\
**Category:** Internals & Design\
**Tags:** multithreading, broadcast\
**Created:** [July 25, 2019, 9:08am UTC](https://discourse.julialang.org/t/multithreaded-broadcast/26786 "2019-07-25T09:08:08Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![antoine-levitt](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/antoine-levitt/32/4008_2.png) [@antoine-levitt](https://discourse.julialang.org/u/antoine-levitt)\
**Post date:** [July 25, 2019, 1:38pm UTC](https://discourse.julialang.org/t/multithreaded-broadcast/26786/5 "2019-07-25T13:38:34Z")

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FWIW, I just tested the overhead of C/OpenMP threading; for a simple sum the crossover point appears to be at N=3\_000, which would seems to suggest that the overhead in julia is ~20x larger than in OpenMP.

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