# Proper way to install Julia with \`OPENBLAS\_NUM\_THREADS=1\`
**URL:** https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855
**Category:** General Usage
**Tags:** installation, juliaup, openblas
**Created:** [October 11, 2023, 1:59pm UTC](https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855 "2023-10-11T13:59:59Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@pat-alt](https://discourse.julialang.org/u/pat-alt)
#### Post date: [October 11, 2023, 1:59pm UTC](https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855/1 "2023-10-11T13:59:59Z")
_Related to: [Odd thread calling behavior on HPC](https://discourse.julialang.org/t/odd-thread-calling-behavior-on-hpc/104789/1)_
I’ve been experiencing some issues on our uni’s HPC due to OpenBLAS thread calling (see link to related discussion above). The issue can be resolved by just adding/modifying an environment variable (`export OPENBLAS_NUM_THREADS=1`). Ideally, I’d like to install Julia with that flag already activated.
Is there an easy way to do this using a) juliaup and b) using a [pre-built binary](https://julialang.org/downloads/platform/#linux_and_freebsd)?
Thanks!
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### Author:  [@johnh](https://discourse.julialang.org/u/johnh)
#### Post date: [October 11, 2023, 2:16pm UTC](https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855/2 "2023-10-11T14:16:29Z")
Surely it is easy to put this export statement in your .bashrc
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### Author:  [@pat-alt](https://discourse.julialang.org/u/pat-alt)
#### Post date: [October 11, 2023, 2:19pm UTC](https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855/3 "2023-10-11T14:19:12Z")
Yeh that’s fair, but I like to sync my dotfiles across platforms and I don’t necessarily want that flag everywhere. So if there’s a way to specify it during installation that’d be nicer.
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### Author:  [@vchuravy](https://discourse.julialang.org/u/vchuravy)
#### Post date: [October 11, 2023, 2:42pm UTC](https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855/4 "2023-10-11T14:42:34Z")
I would just but it as an export statement in the slurm file.
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### Author:  [@pat-alt](https://discourse.julialang.org/u/pat-alt)
#### Post date: [October 11, 2023, 3:29pm UTC](https://discourse.julialang.org/t/proper-way-to-install-julia-with-openblas-num-threads-1/104855/5 "2023-10-11T15:29:36Z")
Alright, I’ll just stick with that for now, thanks!