# Errors reported during Pkg.test("CUDA")

**URL:** <https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316>\
**Category:** GPU\
**Created:** [April 23, 2025, 3:17am UTC](https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316 "2025-04-23T03:17:40Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![Audrius-St](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/audrius-st/32/24175_2.png) [@Audrius-St](https://discourse.julialang.org/u/Audrius-St)\
**Post date:** [April 23, 2025, 3:17am UTC](https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316/1 "2025-04-23T03:17:40Z")

</div>

Hello,

While I’ve been using Julia for a number of years now, this is my first attempt to use CUDA with Julia. I’ve encountered some errors while running the tests.

OS: Windows 11 | Version 10.0.26120 Build 26120

```julia
julia> using CUDA

(@v1.11) pkg> test CUDA
     Testing CUDA

Testing Running tests...
┌ Info: System information:
│ CUDA runtime 12.8, artifact installation
│ CUDA driver 12.8
│ NVIDIA driver 572.61.0
│
│ CUDA libraries:
│ - CUBLAS: 12.8.4
│ - CURAND: 10.3.9
│ - CUFFT: 11.3.3
│ - CUSOLVER: 11.7.3
│ - CUSPARSE: 12.5.8
│ - CUPTI: 2025.1.1 (API 26.0.0)
│ - NVML: 12.0.0+572.61
│
│ Julia packages:
│ - CUDA: 5.7.3
│ - CUDA_Driver_jll: 0.12.1+1
│ - CUDA_Runtime_jll: 0.16.1+0
│
│ Toolchain:
│ - Julia: 1.11.5
│ - LLVM: 16.0.6
│
│ 1 device:
└ 0: NVIDIA GeForce GTX 1080 (sm_61, 7.283 GiB / 8.000 GiB available)
[ Info: Testing using device 0 (NVIDIA GeForce GTX 1080). 

. . .

 From worker 4: WARNING: Method definition var"#5780#kernel"(Any) in module Main at C:\Users\. . .\.julia\packages\CUDA\oymHm\test\core\execution.jl:360 overwritten at C:\Users\. . . \.julia\packages\CUDA\oymHm\test\core\execution.jl:368.

. . .

base/examples (6) | failed at 2025-04-22T22:27:51.941
Worker 6 terminated.
Unhandled Task ERROR: EOFError: read end of file
Stacktrace:
 [1] (::Base.var"#wait_locked#832")(s::Sockets.TCPSocket, buf::IOBuffer, nb::Int64)
   @ Base .\stream.jl:979
 [2] unsafe_read(s::Sockets.TCPSocket, p::Ptr{UInt8}, nb::UInt64)
   @ Base .\stream.jl:987
 [3] unsafe_read
   @ .\io.jl:890 [inlined]
 [4] unsafe_read(s::Sockets.TCPSocket, p::Base.RefValue{NTuple{4, Int64}}, n::Int64)
   @ Base .\io.jl:889
 [5] read!
   @ .\io.jl:894 [inlined]
 [6] deserialize_hdr_raw
   @ C:\Users\Audrius Stundzia\AppData\Local\Programs\Julia-1.11.5\share\julia\stdlib\v1.11\Distributed\src\messages.jl:167 [inlined]
 [7] message_handler_loop(r_stream::Sockets.TCPSocket, w_stream::Sockets.TCPSocket, incoming::Bool)
   @ Distributed C:\Users\Audrius Stundzia\AppData\Local\Programs\Julia-1.11.5\share\julia\stdlib\v1.11\Distributed\src\process_messages.jl:172
 [8] process_tcp_streams(r_stream::Sockets.TCPSocket, w_stream::Sockets.TCPSocket, incoming::Bool)
   @ Distributed C:\Users\Audrius Stundzia\AppData\Local\Programs\Julia-1.11.5\share\julia\stdlib\v1.11\Distributed\src\process_messages.jl:133
 [9] (::Distributed.var"#103#104"{Sockets.TCPSocket, Sockets.TCPSocket, Bool})()
   @ Distributed C:\Users\Audrius Stundzia\AppData\Local\Programs\Julia-1.11.5\share\julia\stdlib\v1.11\Distributed\src\process_messages.jl:121

. . .

Test Summary: | Pass Error Broken Total Time
  Overall | 28796 1 12 28809
 core/cudadrv | 2074 3 2077
 base/texture | 56 4 60
 core/nvml | 27 1 28
 base/examples | 1 1
 base/kernelabstractions | 2462 4 2466

```

As in the Julia CUDA manual, " On Windows, also make sure you have the [Visual C++ redistributable](https://aka.ms/vs/16/release/vc_redist.x64.exe) installed." I downloaded the Visual C++ redistributable [2015 - 2019] and tried to install it.

It turns out that there is a more recent version [2015 - 2022] already installed on my system

 ![MS VS C++ redistributable](https://global.discourse-cdn.com/julialang/original/3X/b/7/b72be87a8b09c236632221b31e555be0030a317b.jpeg)

which prevents the linked redistributable from being installed.  
Is having the more recent redistributable installed okay?

Advice on how to address these errors would be appreciated.

---

<div class="post-metadata">

**Author:** ![maleadt](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/maleadt/32/10097_2.png) [@maleadt](https://discourse.julialang.org/u/maleadt)\
**Post date:** [April 23, 2025, 5:02am UTC](https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316/2 "2025-04-23T05:02:23Z")

</div>

Yes, that should be fine. If you don’t have it installed, you’ll run into `The specified module could not be found` errors during testing.

The `base/examples` test failures are probably unrelated. Try running each example in isolation (from the `examples/` folder in the repository) to see which one fails.

---

<div class="post-metadata">

**Author:** ![Audrius-St](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/audrius-st/32/24175_2.png) [@Audrius-St](https://discourse.julialang.org/u/Audrius-St)\
**Post date:** [April 23, 2025, 8:26pm UTC](https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316/3 "2025-04-23T20:26:09Z")

</div>

Thanks for your reply and advice.

In the directory  
`C:\Users\. . .\.julia\packages\CUDA\oymHm\examples`

I found the following

 ![examples_directory](https://global.discourse-cdn.com/julialang/original/3X/0/b/0bf9585df641b3d06b990a86b9b733e5dba0e43b.jpeg)

```julia
julia> include("hello_world.jl")
Greetings from block 2, thread 1!
Greetings from block 2, thread 2!
Greetings from block 1, thread 1!
Greetings from block 1, thread 2!

```

```julia
julia> include("pairwise.jl")
Test Passed

```

```julia
julia> include("peakflops.jl")
3.2044053e12

```

```julia
julia> include("vadd.jl")
Test Passed

```

As all the tests worked, is this the correct `examples/` directory to run the tests?

---

<div class="post-metadata">

**Author:** ![maleadt](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/maleadt/32/10097_2.png) [@maleadt](https://discourse.julialang.org/u/maleadt)\
**Post date:** [April 24, 2025, 6:31am UTC](https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316/4 "2025-04-24T06:31:46Z")

</div>

Yes, but the subdirectories you see there contain other examples. Also, the test suite executes with `--check-bounds=yes`, in case that would cause something to fail.

---

<div class="post-metadata">

**Author:** ![Audrius-St](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/audrius-st/32/24175_2.png) [@Audrius-St](https://discourse.julialang.org/u/Audrius-St)\
**Post date:** [April 26, 2025, 9:52pm UTC](https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316/5 "2025-04-26T21:52:06Z")

</div>

> [@maleadt](#):
>
> Yes, but the subdirectories you see there contain other examples.

Had a look and ran:

C:\Users\ . . .\ .julia\packages\CUDA\oymHm\examples\driver

 ![examples_driver_directory](https://global.discourse-cdn.com/julialang/original/3X/3/6/36b1934b36b5dcab5e6d9a6b8b16b967ebdd7901.jpeg)

```julia
julia> using CUDA

julia> include("vadd.jl")
Test Passed

```

C:\Users\ . . .\ .julia\packages\CUDA\oymHm\examples\wmma

```julia
julia> using CUDA

julia> include("high-level.jl")
PS C:\Users\ . . . \.julia\packages\CUDA\oymHm\examples\wmma>

```

```julia
julia> using CUDA

julia> include("low-level.jl")
PS C:\Users\ . . . \.julia\packages\CUDA\oymHm\examples\wmma>

```

Both scripts seem to crash, no error messages, and force an exit from Julia.

> Also, the test suite executes with `--check-bounds=yes`, in case that would cause something to fail.

```julia
PS C:\Users\. . . > julia -t auto --check-bounds=no

Precompiling InteractiveUtils...
  3 dependencies successfully precompiled in 5 seconds
Precompiling REPL...
  3 dependencies successfully precompiled in 50 seconds. 3 already precompiled.

```

```julia
julia> using CUDA
Precompiling CUDA...
  96 dependencies successfully precompiled in 143 seconds. 4 already precompiled.
Precompiling REPLExt...
  1 dependency successfully precompiled in 8 seconds. 26 already precompiled.
Precompiling StyledStringsExt...
  1 dependency successfully precompiled in 1 seconds. 4 already precompiled.

```

```julia
(@v1.11) pkg> test CUDA
     Testing CUDA

```

results in the same errors in `base/examples` as listed in my original post.

---

<div class="post-metadata">

**Author:** ![maleadt](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/maleadt/32/10097_2.png) [@maleadt](https://discourse.julialang.org/u/maleadt)\
**Post date:** [April 28, 2025, 6:42am UTC](https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316/6 "2025-04-28T06:42:39Z")

</div>

> [@Audrius-St](#):
>
> ```julia
> julia> using CUDA
> 
> julia> include("high-level.jl")
> PS C:\Users\Audrius Stundzia\.julia\packages\CUDA\oymHm\examples\wmma>
> 
> ```
> 
> ```julia
> julia> using CUDA
> 
> julia> include("low-level.jl")
> PS C:\Users\Audrius Stundzia\.julia\packages\CUDA\oymHm\examples\wmma>
> 
> ```
> 
> Both scripts seem to crash, no error messages, and force an exit from Julia.

That makes it hard to debug, of course. But it does seem like the source of the test suite failures.

In any case, if you don’t use WMMA, you shouldn’t run in this being problematic. Also, IIUC the wmma tests themselves seem to pass fine on your system, so maybe this is just a problem with the examples.

---

<div class="post-metadata">

**Author:** ![Audrius-St](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/audrius-st/32/24175_2.png) [@Audrius-St](https://discourse.julialang.org/u/Audrius-St)\
**Post date:** [April 28, 2025, 5:45pm UTC](https://discourse.julialang.org/t/errors-reported-during-pkg-test-cuda/128316/7 "2025-04-28T17:45:17Z")

</div>

> [@maleadt](#):
>
> . . .
> 
> In any case, if you don’t use WMMA, you shouldn’t run in this being problematic. Also, IIUC the wmma tests themselves seem to pass fine on your system, so maybe this is just a problem with the examples.

Thank you for your replies and advice, will now give CUDA a go and see if any issues arise in application.