# How to properly run julia 1.9 on LSF cluster

**URL:** <https://discourse.julialang.org/t/how-to-properly-run-julia-1-9-on-lsf-cluster/104999>\
**Category:** General Usage\
**Tags:** question, cluster, precompilation\
**Created:** [October 16, 2023, 8:27am UTC](https://discourse.julialang.org/t/how-to-properly-run-julia-1-9-on-lsf-cluster/104999 "2023-10-16T08:27:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [October 16, 2023, 8:27am UTC](https://discourse.julialang.org/t/how-to-properly-run-julia-1-9-on-lsf-cluster/104999/1 "2023-10-16T08:27:36Z")

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I updated to julia 1.9.3, and I am unable to run my code on a cluster.

The 1st issue is the precompilation. It seems to me that every time I open a new session with the cluster, I need to precompile my project. As far as I understand, this is a julia 1.9 thing. Is there a way to deal with this when working on a cluster?

The 2nd issue, is a segmentation fault.  
Running my script I see these warnings:

```julia
<E2><94><8C> Warning: The call to compilecache failed to create a usable precompiled cache file for FileIO [5789e2e9-d7fb-5bc7-8068-2c6fae9b9549]
<E2><94><82> exception = ArgumentError: Invalid checksum in cache file /home/labs/orenraz/roiho/.julia/compiled/v1.9/FileIO/6iKRU_gncnE.so.
<E2><94><94> @ Base loading.jl:1818

```

and

```julia
<E2><94><94> @ Base loading.jl:1793
<E2><94><8C> Warning: Module FileIO with build ID ffffffff-ffff-ffff-001c-a130a3b6bf6f is missing from the cache.
<E2><94><82> This may mean FileIO [5789e2e9-d7fb-5bc7-8068-2c6fae9b9549] does not support precompilation but is imported by a module that does.

```

Followed by

```julia
/scratch/1697361899.830137.65: line 8: 58683 Segmentation fault (core dumped)

```

I posted this [question](https://discourse.julialang.org/t/error-precompiling-on-cluster/104974) before, but I phrased it badly, and that is why I opened this new thread.

I’d love to know if there is a “good” way to run julia 1.9 on a cluster or if the best thing is to go back to julia 1.7 (which is the version I had before and was working well).

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**Author:** ![albheim](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/albheim/32/34660_2.png) [@albheim](https://discourse.julialang.org/u/albheim)\
**Post date:** [October 16, 2023, 8:39pm UTC](https://discourse.julialang.org/t/how-to-properly-run-julia-1-9-on-lsf-cluster/104999/2 "2023-10-16T20:39:06Z")

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Are you running with distributed workers or what does running on a cluster entail?

Can you try to run it locally with a few workers on you computer and see if you run into the same problem?

Can you try to delete the `~/.julia/compiled` folder and instantiate everything again? Have had similar problems that seemingly came from some borked compilation, and were solved by just removing and instantiating.

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**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [October 17, 2023, 7:21am UTC](https://discourse.julialang.org/t/how-to-properly-run-julia-1-9-on-lsf-cluster/104999/3 "2023-10-17T07:21:25Z")

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I am just running many instances of the same script, so I am not dealing with distributed workers or anything like that.

Using the tip from [this thread](https://discourse.julialang.org/t/error-precompiling-on-cluster/104974/17) setting

```julia
export JULIA_CPU_TARGET="generic;icelake-server,clone_all"

```

I got a bit ahead. I still get the warnings I mentioned above, but there is no segmentation fault. I am still waiting for things to finish to see how they turn out.

If things do not go well, I will try to delete the `~/.julia/compiled` folder and instantiate again.

Will update soon! Thanks!

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<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [October 19, 2023, 8:48am UTC](https://discourse.julialang.org/t/how-to-properly-run-julia-1-9-on-lsf-cluster/104999/4 "2023-10-19T08:48:02Z")

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See this [post](https://discourse.julialang.org/t/error-precompiling-on-cluster/104974/24) for the solution. Thanks!