/usr/local/bin/luajit: lib/LeakyReLU.lua:1: attempt to index global 'nn' (a nil value)

[Saren-Arterius]

It suddenly does not work anymore, after I have upgraded NVIDIA driver in host and docker...
I have no idea why would this happen...

root@8927a337995c:~/waifu2x# th waifu2x.lua 
/usr/local/bin/luajit: /root/waifu2x/lib/LeakyReLU.lua:1: attempt to index global 'nn' (a nil value)
stack traceback:
    /root/waifu2x/lib/LeakyReLU.lua:1: in main chunk
    [C]: in function 'require'
    waifu2x.lua:4: in main chunk
    [C]: in function 'dofile'
    /usr/local/lib/luarocks/rocks/trepl/scm-1/bin/th:131: in main chunk
    [C]: at 0x00404ac0

[c0d3rman]

This happened to me too. Adding
require "nn"
at the top of waifu2x.lua (And train.lua and any other files where the error shows up) fixed it.

[Saren-Arterius]

This is new...

/usr/local/bin/luajit: /usr/local/share/lua/5.1/torch/File.lua:260: unknown Torch class <torch.CudaTensor>
stack traceback:
    [C]: in function 'error'
    /usr/local/share/lua/5.1/torch/File.lua:260: in function 'readObject'
    /usr/local/share/lua/5.1/torch/File.lua:282: in function 'readObject'
    /usr/local/share/lua/5.1/torch/File.lua:268: in function 'readObject'
    /usr/local/share/lua/5.1/torch/File.lua:305: in function 'load'
    waifu2x.lua:32: in function 'convert_image'
    waifu2x.lua:116: in function 'waifu2x'
    waifu2x.lua:121: in main chunk
    [C]: in function 'dofile'
    /usr/local/lib/luarocks/rocks/trepl/scm-1/bin/th:131: in main chunk
    [C]: at 0x00404ac0

[nagadomi]

Fixed?

[Saren-Arterius]

I think at least it's my own problem now.

/usr/local/bin/luajit: /usr/local/share/lua/5.1/trepl/init.lua:363: /tmp/luarocks_cutorch-scm-1-178/cutorch/lib/THC/THCGeneral.c(10) : cuda runtime error (38) : no CUDA-capable device is detected at /tmp/luarocks_cutorch-scm-1-178/cutorch/lib/THC/THCGeneral.c:241
stack traceback:
    [C]: in function 'error'
    /usr/local/share/lua/5.1/trepl/init.lua:363: in function 'require'
    /root/waifu2x/lib/portable.lua:2: in main chunk
    [C]: in function 'require'
    waifu2x.lua:1: in main chunk
    [C]: in function 'dofile'
    /usr/local/lib/luarocks/rocks/trepl/scm-1/bin/th:131: in main chunk
    [C]: at 0x00404ac0

[Saren-Arterius]

Yep, confirmed it's my problem. I won't use docker for waifu2x anymore, because torch7 can be installed in Arch from now.

[glubsy]

Yeah, your docker image doesn't work, Saren. Just tried it.