# Package set-up not propagating to workers with Distributed

**URL:** <https://discourse.julialang.org/t/package-set-up-not-propagating-to-workers-with-distributed/74952>\
**Category:** Performance\
**Tags:** distributed\
**Created:** [January 20, 2022, 6:09pm UTC](https://discourse.julialang.org/t/package-set-up-not-propagating-to-workers-with-distributed/74952 "2022-01-20T18:09:03Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![danielsoutar](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@danielsoutar](https://discourse.julialang.org/u/danielsoutar)\
**Post date:** [January 20, 2022, 6:09pm UTC](https://discourse.julialang.org/t/package-set-up-not-propagating-to-workers-with-distributed/74952/1 "2022-01-20T18:09:03Z")

</div>

Info:

```julia
$ julia --version
julia version 1.6.0
$ lscpu
~/root/MyPackage$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 39 bits physical, 48 bits virtual
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 158
Model name: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
...

```

Say I want the following package structure, and want to use ReTest’s parallel testing (my issue appears to be with how code-loading works in Distributed, so this isn’t really a ReTest-specific issue).

```julia
| root/
    | MyPackage/
        | Project.toml
        | Manifest.toml
        | src/
            | MyPackage.jl
        | test/
            | runtests.jl
            | MyPackageTests.jl

```

I initialised this package in the following way:

```julia
$ cd root && julia
(...) pkg> generate MyPackage;
$ cd MyPackage && julia
(...) pkg> activate .
(...) pkg> instantiate
(...) pkg> add ReTest InlineTest Distributed;
...

```

Fill in `MyPackage.jl`, `runtests.jl`, and `MyPackageTests.jl` with some Julia code.  
Not too important what that code is - although I am following the guide from [here in ReTest](https://github.com/JuliaTesting/ReTest.jl/blob/master/docs/src/index.md).

Then to set up:

```julia
$ julia
(...) pkg> activate .
(...) pkg> instantiate
(MyPackage) pkg> st
     Project MyPackage v0.1.0
      Status `~/root/MyPackage/Project.toml`
  [bd334432] InlineTest v0.2.0
  [e0db7c4e] ReTest v0.3.2
  [8ba89e20] Distributed
julia> LOAD_PATH
3-element Vector{String}:
 "@" # Should be current active environment for MyPackage
 "@v#.#" # Should be @v1.6 on my system
 "@stdlib" # Should be absolute path of current Julia installation's stdlib
julia> # Should this code be in .jl files? Don't think that should matter.
julia> using Distributed
julia> addprocs(2)
julia> @everywhere include("test/MyPackageTests.jl")
ERROR: On worker 2:
LoadError: ArgumentError: Package MyPackage not found in current path:
- Run `import Pkg; Pkg.add("MyPackage")` to install the MyPackage package.

Stacktrace:
 [1] require
   @ ./loading.jl:871
 [2] include
   @ ./client.jl:444
 [3] top-level scope
   @ none:1
 [4] eval
   @ ./boot.jl:360
 [5] #103
   @ /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.6/Distributed/src/process_messages.jl:274
 [6] run_work_thunk
   @ /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.6/Distributed/src/process_messages.jl:63
 [7] run_work_thunk
   @ /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.6/Distributed/src/process_messages.jl:72
 [8] #96
   @ ./task.jl:406
in expression starting at /path/to/root/MyPackage/test/MyPackageTests.jl:1

...and 2 more exceptions.

Stacktrace:
 [1] sync_end(c::Channel{Any})
   @ Base ./task.jl:364
 [2] macro expansion
   @ ./task.jl:383 [inlined]
 [3] remotecall_eval(m::Module, procs::Vector{Int64}, ex::Expr)
   @ Distributed /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.6/Distributed/src/macros.jl:223
 [4] top-level scope
   @ /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.6/Distributed/src/macros.jl:207

```

I’d like to understand why this is. On GitHub I see [this issue that was supposedly fixed](https://github.com/JuliaLang/julia/issues/26805). I can confirm when I run _that_ example that I also get the exact same problem as above with MyPackage.

Before filing a bug or opening an issue there, I’d like to check here in case this is a process problem on my part. If not, there’s evidently something wrong with Distributed/ReTest and I’ll open tickets for those. Any help much appreciated.