# Flux failing on GPU
**URL:** https://discourse.julialang.org/t/flux-failing-on-gpu/18948
**Category:** Machine Learning
**Created:** [December 23, 2018, 8:34pm UTC](https://discourse.julialang.org/t/flux-failing-on-gpu/18948 "2018-12-23T20:34:17Z")
**Posts on this page:** 6
**Page:** 2
### Author:  [@jeremiedb](https://discourse.julialang.org/u/jeremiedb)
#### Post date: [February 19, 2020, 2:10am UTC](https://discourse.julialang.org/t/flux-failing-on-gpu/18948/21 "2020-02-19T02:10:43Z")
From what I read in the notebook, seems like cudnn isn’t from version 7.6 or higher. Have you validated CUDNN version shipped on AWS instance? For example:
`cat /usr/local/cuda-10.1/include/cudnn.h | grep CUDNN_MAJOR -A 2`.
If it’s effectively version 7.5.1 as indicated in warning messages, then I guess an upgrade of CUDNN might make it.
---
### Author:  [@maleadt](https://discourse.julialang.org/u/maleadt)
#### Post date: [February 19, 2020, 4:11pm UTC](https://discourse.julialang.org/t/flux-failing-on-gpu/18948/22 "2020-02-19T16:11:53Z")
You are using Flux 0.8.3, which had some bugs wrt. CUDA usage. Please upgrade that package.
---
### Author:  [@rmz](https://discourse.julialang.org/u/rmz)
#### Post date: [February 20, 2020, 4:15pm UTC](https://discourse.julialang.org/t/flux-failing-on-gpu/18948/23 "2020-02-20T16:15:57Z")
> [@jeremiedb](#):
>
> `cat /usr/local/cuda-10.1/include/cudnn.h | grep CUDNN_MAJOR -A 2` .
ok, I can do that:
```julia
$ cat /usr/local/cuda-10.1/include/cudnn.h | grep CUDNN_MAJOR
#define **CUDNN_MAJOR** 7
#define CUDNN_VERSION ( **CUDNN_MAJOR** * 1000 + CUDNN_MINOR * 100 + CUDNN_PATCHLEVEL)
$
```
---
### Author:  [@rmz](https://discourse.julialang.org/u/rmz)
#### Post date: [February 20, 2020, 4:39pm UTC](https://discourse.julialang.org/t/flux-failing-on-gpu/18948/24 "2020-02-20T16:39:02Z")
> [@maleadt](#):
>
> You are using Flux 0.8.3, which had some bugs wrt. CUDA usage. Please upgrade that package.
Hm. I had some difficulties doing that. Trace below. I removed all packages, then did Pkg.update(), then tried to add 1.10.1 which failed due to dependency issues. Then I tried the Pkg.add(“Flux”) command, which installed 0.8.3.
Do you have any hints on how I should proceed?
> **julia\>** Pkg.update()
>
> **Updating** registry at `~/.julia/registries/General`
>
> **Updating** git-repo `https://github.com/JuliaRegistries/General.git`
>
> **Resolving** package versions…
>
> **Installed** ImageShow ─────────────────── v0.2.3
>
> **Installed** Plotly ────────────────────── v0.3.0
>
> **Installed** IJulia ────────────────────── v1.21.1
>
> **Installed** BenchmarkTools ────────────── v0.4.3
>
> **Installed** CUDAapi ───────────────────── v3.1.0
>
> **Installed** CUDAdrv ───────────────────── v6.0.0
>
> **Installed** CuArrays ──────────────────── v1.7.2
>
> **Installed** BSON ──────────────────────── v0.2.5
>
> **Installed** ImageMagick ───────────────── v1.1.2
>
> **Installed** CUDAnative ────────────────── v2.10.2
>
> **Installed** Plots ─────────────────────── v0.29.1
>
> **Installed** WebIO ─────────────────────── v0.8.13
>
> **Installed** GPUArrays ─────────────────── v2.0.1
>
> **Installed** Colors ────────────────────── v0.11.2
>
> **Installed** OrdinaryDiffEq ────────────── v5.29.0
>
> **Installed** FileIO ────────────────────── v1.2.2
>
> **Installed** Zstd\_jll ──────────────────── v1.4.4+0
>
> **Installed** DiffResults ───────────────── v1.0.2
>
> **Installed** NaNMath ───────────────────── v0.3.3
>
> **Installed** TimerOutputs ──────────────── v0.5.3
>
> **Installed** DiffRules ─────────────────── v1.0.1
>
> **Installed** DifferentialEquations ─────── v6.11.0
>
> **Installed** PlotUtils ─────────────────── v0.6.3
>
> **Installed** StatsBase ─────────────────── v0.32.1
>
> **Installed** AssetRegistry ─────────────── v0.1.0
>
> **Installed** Widgets ───────────────────── v0.6.2
>
> **Installed** ZMQ ───────────────────────── v1.2.0
>
> **Installed** Measures ──────────────────── v0.3.1
>
> **Installed** VertexSafeGraphs ──────────── v0.1.1
>
> **Installed** PaddedViews ───────────────── v0.5.1
>
> **Installed** libpng\_jll ────────────────── v1.6.37+2
>
> **Installed** MbedTLS ───────────────────── v0.7.0
>
> **Installed** GeometryTypes ─────────────── v0.7.7
>
> **Installed** LightGraphs ───────────────── v1.3.0
>
> **Installed** MacroTools ────────────────── v0.5.4
>
> **Installed** NLSolversBase ─────────────── v7.6.1
>
> **Installed** FFMPEG ────────────────────── v0.2.4
>
> **Installed** ExponentialUtilities ──────── v1.6.0
>
> **Installed** FunctionWrappers ──────────── v1.0.0
>
> **Installed** ImageMagick\_jll ───────────── v6.9.10-12+0
>
> **Installed** NNlib ─────────────────────── v0.6.4
>
> **Installed** ArrayInterface ────────────── v2.4.1
>
> **Installed** FillArrays ────────────────── v0.8.4
>
> **Installed** HTTP ──────────────────────── v0.8.8
>
> **Installed** Roots ─────────────────────── v0.8.4
>
> **Installed** ImageCore ─────────────────── v0.8.11
>
> **Installed** BinDeps ───────────────────── v1.0.0
>
> **Installed** DataAPI ───────────────────── v1.1.0
>
> **Installed** PlotThemes ────────────────── v1.0.1
>
> **Installed** DelayDiffEq ───────────────── v5.21.0
>
> **Installed** Showoff ───────────────────── v0.3.1
>
> **Installed** Pidfile ───────────────────── v1.1.0
>
> **Installed** DataValueInterfaces ───────── v1.0.0
>
> **Installed** StaticArrays ──────────────── v0.12.1
>
> **Installed** DiffEqFinancial ───────────── v2.2.1
>
> **Installed** SimpleTraits ──────────────── v0.9.1
>
> **Installed** PlotlyBase ────────────────── v0.3.0
>
> **Installed** MappedArrays ──────────────── v0.2.2
>
> **Installed** FiniteDiff ────────────────── v2.2.0
>
> **Installed** DiffEqJump ────────────────── v6.5.0
>
> **Installed** Requires ──────────────────── v1.0.1
>
> **Installed** RecipesBase ───────────────── v0.8.0
>
> **Installed** ArrayLayouts ──────────────── v0.1.5
>
> **Installed** RecursiveFactorization ────── v0.1.0
>
> **Installed** DataStructures ────────────── v0.17.9
>
> **Installed** RandomNumbers ─────────────── v1.4.0
>
> **Installed** Distances ─────────────────── v0.8.2
>
> **Installed** Zlib\_jll ──────────────────── v1.2.11+8
>
> **Installed** SpecialFunctions ──────────── v0.10.0
>
> **Installed** ChainRulesCore ────────────── v0.6.1
>
> **Installed** Graphics ──────────────────── v1.0.1
>
> **Installed** ArnoldiMethod ─────────────── v0.0.4
>
> **Installed** IteratorInterfaceExtensions ─ v1.0.0
>
> **Installed** DiffEqNoiseProcess ────────── v3.9.0
>
> **Installed** Hiccup ────────────────────── v0.2.2
>
> **Installed** CEnum ─────────────────────── v0.2.0
>
> **Installed** VersionParsing ────────────── v1.2.0
>
> **Installed** PlotlyJS ──────────────────── v0.13.1
>
> **Installed** ColorTypes ────────────────── v0.9.1
>
> **Installed** SteadyStateDiffEq ─────────── v1.5.0
>
> **Installed** GR ────────────────────────── v0.46.0
>
> **Installed** ForwardDiff ───────────────── v0.10.9
>
> **Installed** Compat ────────────────────── v2.2.0
>
> **Installed** OffsetArrays ──────────────── v1.0.2
>
> **Installed** JSExpr ────────────────────── v0.5.1
>
> **Installed** RecursiveArrayTools ───────── v2.1.0
>
> **Installed** GenericSVD ────────────────── v0.2.2
>
> **Installed** FunctionalCollections ─────── v0.5.0
>
> **Installed** FixedPointNumbers ─────────── v0.7.1
>
> **Installed** WebSockets ────────────────── v1.5.2
>
> **Installed** AbstractFFTs ──────────────── v0.5.0
>
> **Installed** Parsers ───────────────────── v0.3.11
>
> **Installed** ResettableStacks ──────────── v1.0.0
>
> **Installed** ZygoteRules ───────────────── v0.2.0
>
> **Installed** Sundials ──────────────────── v3.8.2
>
> **Installed** DiffEqBase ────────────────── v6.16.0
>
> **Installed** Inflate ───────────────────── v0.1.1
>
> **Installed** JSON ──────────────────────── v0.21.0
>
> **Installed** SortingAlgorithms ─────────── v0.3.1
>
> **Installed** Mustache ──────────────────── v0.5.13
>
> **Installed** LLVM ──────────────────────── v1.3.3
>
> **Installed** TableTraits ───────────────── v1.0.0
>
> **Installed** Tables ────────────────────── v1.0.1
>
> **Installed** DiffEqPhysics ─────────────── v3.5.0
>
> **Installed** ZeroMQ\_jll ────────────────── v4.3.2+0
>
> **Installed** Adapt ─────────────────────── v1.0.1
>
> **Installed** BandedMatrices ────────────── v0.14.3
>
> **Installed** DiffEqCallbacks ───────────── v2.12.0
>
> **Installed** Reexport ──────────────────── v0.2.0
>
> **Installed** DimensionalPlotRecipes ────── v1.1.0
>
> **Installed** LineSearches ──────────────── v7.0.1
>
> **Installed** Conda ─────────────────────── v1.4.1
>
> **Installed** SparseDiffTools ───────────── v1.3.3
>
> **Installed** URIParser ─────────────────── v0.4.0
>
> **Installed** BinaryProvider ────────────── v0.5.8
>
> **Installed** OrderedCollections ────────── v1.1.0
>
> **Installed** LaTeXStrings ──────────────── v1.0.3
>
> **Installed** IniFile ───────────────────── v0.5.0
>
> **Installed** SoftGlobalScope ───────────── v1.0.10
>
> **Installed** Parameters ────────────────── v0.12.0
>
> **Installed** NLsolve ───────────────────── v4.3.0
>
> **Installed** MuladdMacro ───────────────── v0.2.2
>
> **Installed** BoundaryValueDiffEq ───────── v2.4.0
>
> **Installed** OpenSpecFun\_jll ───────────── v0.5.3+1
>
> **Installed** DocStringExtensions ───────── v0.8.1
>
> **Installed** Blink ─────────────────────── v0.12.1
>
> **Installed** CommonSubexpressions ──────── v0.2.0
>
> **Installed** StochasticDiffEq ──────────── v6.19.1
>
> **Installed** IterativeSolvers ──────────── v0.8.1
>
> **Installed** JpegTurbo\_jll ─────────────── v2.0.1+0
>
> **Installed** Libtiff\_jll ───────────────── v4.0.10+0
>
> **Installed** Missings ──────────────────── v0.4.3
>
> **Installed** Contour ───────────────────── v0.5.1
>
> **Installed** TreeViews ─────────────────── v0.3.0
>
> **Installed** Observables ───────────────── v0.2.3
>
> **Installed** Mux ───────────────────────── v0.7.1
>
> **Installed** Lazy ──────────────────────── v0.14.0
>
> **Installed** PoissonRandom ─────────────── v0.4.0
>
> **Installed** MultiScaleArrays ──────────── v1.6.0
>
> **Updating** `~/.julia/environments/v1.3/Project.toml`
>
> [no changes]
>
> **Updating** `~/.julia/environments/v1.3/Manifest.toml`
>
> [no changes]
>
> **Building** Conda ───→ `~/.julia/packages/Conda/3rPhK/deps/build.log`
>
> **Building** MbedTLS ─→ `~/.julia/packages/MbedTLS/a1JFn/deps/build.log`
>
> **Building** IJulia ──→ `~/.julia/packages/IJulia/yLI42/deps/build.log`
>
> **Building** GR ──────→ `~/.julia/packages/GR/NSt7D/deps/build.log`
>
> **Building** FFMPEG ──→ `~/.julia/packages/FFMPEG/guN1x/deps/build.log`
>
> **Building** Plots ───→ `~/.julia/packages/Plots/12uaJ/deps/build.log`
>
> **Building** WebIO ───→ `~/.julia/packages/WebIO/2nnB1/deps/build.log`
>
> **Building** NNlib ───→ `~/.julia/packages/NNlib/3krvM/deps/build.log`
>
> **Building** Blink ───→ `~/.julia/packages/Blink/4FM8Y/deps/build.log`
>
> **Building** PlotlyJS → `~/.julia/packages/PlotlyJS/AhkM5/deps/build.log`
>
> **Building** Sundials → `~/.julia/packages/Sundials/GuMs0/deps/build.log`
>
> **julia\>** Pkg.add(Pkg.PackageSpec(;name=“Flux”, version=“0.10.1”))
>
> **Resolving** package versions…
>
> **ERROR:** Unsatisfiable requirements detected for package Flux [587475ba]:
>
> Flux [587475ba] log:
>
> ├─possible versions are: [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.9.0, 0.10.0-0.10.1] or uninstalled
>
> ├─restricted to versions 0.10.1 by an explicit requirement, leaving only versions 0.10.1
>
> └─restricted by compatibility requirements with Colors [5ae59095] to versions: [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.9.0] or uninstalled — no versions left
>
> └─Colors [5ae59095] log:
>
> ├─possible versions are: [0.9.0, 0.9.2-0.9.6, 0.10.0-0.10.2, 0.11.0-0.11.2] or uninstalled
>
> └─restricted to versions 0.11.2 by an explicit requirement, leaving only versions 0.11.2
>
> Stacktrace:
>
> [1] **#propagate\_constraints!#61(** ::Bool, ::typeof(Pkg.GraphType.propagate\_constraints!), ::Pkg.GraphType.Graph, ::Set{Int64} **)** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/GraphType.jl:1007**
>
> [2] **propagate\_constraints!** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/GraphType.jl:948** [inlined]
>
> [3] **#simplify\_graph!#121(** ::Bool, ::typeof(Pkg.GraphType.simplify\_graph!), ::Pkg.GraphType.Graph, ::Set{Int64} **)** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/GraphType.jl:1462**
>
> [4] **simplify\_graph!** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/GraphType.jl:1462** [inlined] (repeats 2 times)
>
> [5] **resolve\_versions!(** ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1} **)** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Operations.jl:321**
>
> [6] **#add#112(** ::Bool, ::Pkg.BinaryPlatforms.Linux, ::typeof(Pkg.Operations.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1} **)** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Operations.jl:1010**
>
> [7] **#add** at **./none:0** [inlined]
>
> [8] **#add#25(** ::Bool, ::Pkg.BinaryPlatforms.Linux, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1} **)** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/API.jl:102**
>
> [9] **add(** ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1} **)** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/API.jl:72**
>
> [10] **#add#24** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/API.jl:69** [inlined]
>
> [11] **add** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/API.jl:69** [inlined]
>
> [12] **#add#20** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/API.jl:66** [inlined]
>
> [13] **add(** ::Pkg.Types.PackageSpec **)** at **/buildworker/worker/package\_linux64/build/usr/share/julia/stdlib/v1.3/Pkg/src/API.jl:66**
>
> [14] top-level scope at **REPL[8]:1**
>
> **julia\>** Pkg.add(“Flux”)
>
> **Resolving** package versions…
>
> **Installed** Juno ─────────────── v0.8.0
>
> **Installed** AbstractTrees ────── v0.3.2
>
> **Installed** CodecZlib ────────── v0.6.0
>
> **Installed** ZipFile ──────────── v0.9.1
>
> **Installed** Tracker ──────────── v0.2.6
>
> **Installed** Media ────────────── v0.5.0
>
> **Installed** Flux ─────────────── v0.8.3
>
> **Installed** TranscodingStreams ─ v0.9.5
>
> **Updating** `~/.julia/environments/v1.3/Project.toml`
>
> [587475ba] + Flux v0.8.3
>
> **Updating** `~/.julia/environments/v1.3/Manifest.toml`
>
> [1520ce14] + AbstractTrees v0.3.2
>
> [944b1d66] + CodecZlib v0.6.0
>
> [587475ba] + Flux v0.8.3
>
> [e5e0dc1b] + Juno v0.8.0
>
> [e89f7d12] + Media v0.5.0
>
> [9f7883ad] + Tracker v0.2.6
>
> [3bb67fe8] + TranscodingStreams v0.9.5
>
> [a5390f91] + ZipFile v0.9.1
>
> [9abbd945] + Profile
>
> **Building** CodecZlib → `~/.julia/packages/CodecZlib/5t9zO/deps/build.log`
>
> **julia\>**
---
### Author:  [@maleadt](https://discourse.julialang.org/u/maleadt)
#### Post date: [February 20, 2020, 5:11pm UTC](https://discourse.julialang.org/t/flux-failing-on-gpu/18948/25 "2020-02-20T17:11:06Z")
> [@rmz](#):
>
> Flux [587475ba] log:
>
> ├─possible versions are: [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.9.0, 0.10.0-0.10.1] or uninstalled
>
> ├─restricted to versions 0.10.1 by an explicit requirement, leaving only versions 0.10.1
>
> └─restricted by compatibility requirements with Colors [5ae59095] to versions: [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.9.0] or uninstalled — no versions left
>
> └─Colors [5ae59095] log:
>
> ├─possible versions are: [0.9.0, 0.9.2-0.9.6, 0.10.0-0.10.2, 0.11.0-0.11.2] or uninstalled
>
> └─restricted to versions 0.11.2 by an explicit requirement, leaving only versions 0.11.2
Flux does not support the latest version of Colors which you have installed, so it downgrades to a version of Flux that doesn’t use Colors. [CompatHelper: bump compat for "Colors" to "0.11" by github-actions[bot] · Pull Request #1038 · FluxML/Flux.jl · GitHub](https://github.com/FluxML/Flux.jl/pull/1038) will fix that.
---
### Author:  [@rmz](https://discourse.julialang.org/u/rmz)
#### Post date: [February 21, 2020, 8:00am UTC](https://discourse.julialang.org/t/flux-failing-on-gpu/18948/26 "2020-02-21T08:00:01Z")
Awsome. Thank you. It seems the protocol is “get rid of all packages, install flux, then . instal everything else.” (I’m not fully conversant with the dependency management in Julia, but I’m getting there 🙂 )
[Previous page](https://discourse.julialang.org/t/flux-failing-on-gpu/18948.md?page=1)