# Pkg precompile single threaded option?

**URL:** <https://discourse.julialang.org/t/pkg-precompile-single-threaded-option/78798>\
**Category:** Package Management\
**Created:** [March 31, 2022, 10:58am UTC](https://discourse.julialang.org/t/pkg-precompile-single-threaded-option/78798 "2022-03-31T10:58:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Iulian.Cioarca](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iulian.cioarca/32/30166_2.png) [@Iulian.Cioarca](https://discourse.julialang.org/u/Iulian.Cioarca)\
**Post date:** [March 31, 2022, 10:58am UTC](https://discourse.julialang.org/t/pkg-precompile-single-threaded-option/78798/1 "2022-03-31T10:58:56Z")

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Is there a way to force precompilation to single threaded in Julia 1.7? I’m running it on the tiny Raspberry Pi Zero and the multithreaded precompilation blows up RAM with a lot of julia instances.

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**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [March 31, 2022, 12:16pm UTC](https://discourse.julialang.org/t/pkg-precompile-single-threaded-option/78798/2 "2022-03-31T12:16:41Z")

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You can set the environment variable `JULIA_NUM_PRECOMPILE_TASKS` to 1.