# Problem combining worker processes and threads

**URL:** <https://discourse.julialang.org/t/problem-combining-worker-processes-and-threads/64069>\
**Category:** General Usage\
**Tags:** question\
**Created:** [July 5, 2021, 10:51am UTC](https://discourse.julialang.org/t/problem-combining-worker-processes-and-threads/64069 "2021-07-05T10:51:05Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![orenbenkiki](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/orenbenkiki/32/5578_2.png) [@orenbenkiki](https://discourse.julialang.org/u/orenbenkiki)\
**Post date:** [July 19, 2021, 12:24pm UTC](https://discourse.julialang.org/t/problem-combining-worker-processes-and-threads/64069/5 "2021-07-19T12:24:18Z")

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So, it seems that this is due to [Are Julia Channels/Futures thread safe (with a failing code example)?](https://discourse.julialang.org/t/are-julia-channels-futures-thread-safe-with-a-failing-code-example/64490) (which ties in to [Concurrency violation on interplay between Distributed and Base.Threads · Issue #37706 · JuliaLang/julia · GitHub](https://github.com/JuliaLang/julia/issues/37706)). I must say I’m surprised that basic coordination classes such as futures and channels are not thread safe.

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