# Julia/Knet deep learning tutorial available with free GPUs from Google Colab

**URL:** <https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352>\
**Category:** Machine Learning\
**Created:** [September 22, 2018, 7:10pm UTC](https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352 "2018-09-22T19:10:40Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![denizyuret](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/denizyuret/32/568_2.png) [@denizyuret](https://discourse.julialang.org/u/denizyuret)\
**Post date:** [September 22, 2018, 7:10pm UTC](https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352/1 "2018-09-22T19:10:40Z")

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To try it out, please follow the instructions at [https://github.com/denizyuret/Knet.jl/tree/dy/1.1/tutorial](https://github.com/denizyuret/Knet.jl/tree/dy/1.1/tutorial) and let me know if anything does not work. Thanks @jekbradbury for figuring this out.

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**Author:** ![Ajaychat3](https://avatars.discourse-cdn.com/v4/letter/a/ecd19e/32.png) [@Ajaychat3](https://discourse.julialang.org/u/Ajaychat3)\
**Post date:** [September 23, 2018, 9:21am UTC](https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352/2 "2018-09-23T09:21:34Z")

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@denizyuret: Thanks. one question about gcc compiler. How do I check whether I have gcc installed or not. By the way I have MS visual c++ compiler installed that works for cython. I have also numba installed but do not know which compiler it is using.

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**Author:** ![Joshua\_Bowles](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joshua_bowles/32/4515_2.png) [@Joshua\_Bowles](https://discourse.julialang.org/u/Joshua_Bowles)\
**Post date:** [September 23, 2018, 2:12pm UTC](https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352/3 "2018-09-23T14:12:36Z")

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```julia
gcc --version
#OR
g++ --version

```

if you get an error you don’t have it installed. I believe you can install that compiler on MS as a standalone even after you’ve installed visual studio (where MS visual might have install `cl` ??).  
[Install C++ support in Visual Studio](https://docs.microsoft.com/en-us/cpp/build/vscpp-step-0-installation?view=vs-2017)

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<div class="post-metadata">

**Author:** ![Ajaychat3](https://avatars.discourse-cdn.com/v4/letter/a/ecd19e/32.png) [@Ajaychat3](https://discourse.julialang.org/u/Ajaychat3)\
**Post date:** [September 23, 2018, 2:32pm UTC](https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352/4 "2018-09-23T14:32:42Z")

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I don’t have gcc installed.

When I run the 5th cell in ‘Julia is fast’. I get the following error.

```julia
IOError: could not spawn `gcc -std=c99 -fPIC -O3 -msse3 -xc -shared -o 'C:\Users\chatura\AppData\Local\Temp\jl_C7CA.tmp.dll' -`: no such file or directory (ENOENT)

Stacktrace:
 [1] _jl_spawn(::String, ::Array{String,1}, ::Cmd, ::Tuple{Base.PipeEndpoint,Base.DevNull,Base.PipeEndpoint}) at .\process.jl:367
 [2] (::getfield(Base, Symbol("##495#496")){Cmd})(::Tuple{Base.PipeEndpoint,Base.DevNull,Base.PipeEndpoint}) at .\process.jl:509
 [3] setup_stdio(::getfield(Base, Symbol("##495#496")){Cmd}, ::Tuple{Pipe,Base.DevNull,IJulia.IJuliaStdio{Base.PipeEndpoint}}) at .\process.jl:490
 [4] #_spawn#494(::Nothing, ::Function, ::Cmd, ::Tuple{Pipe,Base.DevNull,IJulia.IJuliaStdio{Base.PipeEndpoint}}) at .\process.jl:508
 [5] _spawn(::Cmd, ::Tuple{Pipe,Base.DevNull,IJulia.IJuliaStdio{Base.PipeEndpoint}}) at .\process.jl:504
 [6] #open#504(::Bool, ::Bool, ::Function, ::Cmd, ::Base.DevNull) at .\process.jl:599
 [7] #open at .\none:0 [inlined]
 [8] open(::Cmd, ::String, ::Base.DevNull) at .\process.jl:567
 [9] open at .\process.jl:562 [inlined]
 [10] open(::getfield(Main, Symbol("##3#4")), ::Cmd, ::String) at .\process.jl:615
 [11] top-level scope at In[5]:15

```

Can’t I use MS visual c++ compiler and how? I have these components installed as part of visual studio. Sorry if this sounds silly but I am new to Julia and not a professional programmer.

```julia
C# and Visual Basic Roslyn compilers
MSBuild
Static analysis tools
Text Template Transformation
ASP.NET and web development
Visual Studio C++ core features
Visual C++ 2017 Redistributable Update
VC++ 2017 version 15.8 v14.15 latest v141 tools
Windows 10 SDK (10.0.17134.0)

```

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<div class="post-metadata">

**Author:** ![Joshua\_Bowles](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joshua_bowles/32/4515_2.png) [@Joshua\_Bowles](https://discourse.julialang.org/u/Joshua_Bowles)\
**Post date:** [September 23, 2018, 2:49pm UTC](https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352/5 "2018-09-23T14:49:14Z")

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i need to go through the colab notebooks myself to understand.

But the `gcc` compiler and Windows OS is not a Julia problem… that is c/c++ compilers and compatibility lameness. I don’t have access to Windows right now so I’m not sure what steps to take (or even if its worth the trouble trying to get `gcc` on windows ☹ ). You could start here: [http://mingw-w64.org/doku.php/download#mingw-builds](http://mingw-w64.org/doku.php/download#mingw-builds)

maybe someone else on this forum has better advice 🤷‍♂️

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<div class="post-metadata">

**Author:** ![Joshua\_Bowles](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joshua_bowles/32/4515_2.png) [@Joshua\_Bowles](https://discourse.julialang.org/u/Joshua_Bowles)\
**Post date:** [September 23, 2018, 2:54pm UTC](https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352/6 "2018-09-23T14:54:33Z")

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oh ahaha i should have looked at the notebook pane you were describing… I’m pretty sure you can just skip running much of that…

the example is building and compiling a C program and using that as an example of wrapping Julia and linking to it. From what I can see it’s just some expository code to show how easy it is for Julia to interop with C/C++

Having said that, I’ve never run Knet on Windows, only Linux and Mac, so I can’t speak to experience running Knet on windows.

But I’d say if you’re able to pkg install Knet and Pycall on your machine you’re likely good to go.

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<div class="post-metadata">

**Author:** ![Ajaychat3](https://avatars.discourse-cdn.com/v4/letter/a/ecd19e/32.png) [@Ajaychat3](https://discourse.julialang.org/u/Ajaychat3)\
**Post date:** [September 23, 2018, 3:29pm UTC](https://discourse.julialang.org/t/julia-knet-deep-learning-tutorial-available-with-free-gpus-from-google-colab/15352/7 "2018-09-23T15:29:53Z")

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@Joshua_Bowles: Thanks. I plan work on other parts of the notebook.