Torch error when run demo 2,3: table index is nil

[trungdn]

I try to run demo on Raspberry Pi 3 - ARM but it got some error:

Context of the issue.

/home/trungdn/torch/install/share/lua/5.1/torch/File.lua:370: table index is nil
stack traceback:
/home/trungdn/torch/install/share/lua/5.1/torch/File.lua:370: in function 'readObject'
/home/trungdn/torch/install/share/lua/5.1/nn/Module.lua:158: in function 'read'
/home/trungdn/torch/install/share/lua/5.1/torch/File.lua:351: in function 'readObject'
/home/trungdn/torch/install/share/lua/5.1/torch/File.lua:409: in function 'load'
...lib/python2.7/dist-packages/openface/openface_server.lua:40: in main chunk
[C]: in function 'dofile'
...ngdn/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:145: in main chunk
[C]: at 0x00014895
Traceback (most recent call last):
File "./demos/classifier.py", line 189, in
infer(args)
File "./demos/classifier.py", line 119, in infer
rep = getRep(img).reshape(1, -1)
File "./demos/classifier.py", line 78, in getRep
rep = net.forward(alignedFace)
File "/usr/local/lib/python2.7/dist-packages/openface/torch_neural_net.py", line 150, in forward
rep = self.forwardPath(t)
File "/usr/local/lib/python2.7/dist-packages/openface/torch_neural_net.py", line 107, in forwardPath
""".format(self.cmd, self.p.stdout.read()))
Exception:

OpenFace: openface_server.lua subprocess has died.

• Is the Torch command th on your PATH? Check with which th.
• If th is on your PATH, try running ./util/profile-network.lua
  to see if Torch can correctly load and run the network.
  If this gives illegal instruction errors, see the section on
  this in our FAQ at http://cmusatyalab.github.io/openface/faq/
• See this GitHub issue if you are running on
  a non-64-bit machine:
  Architecture issues with Torch.load #42
• Please post further issues to our mailing list at
  https://groups.google.com/forum/#!forum/cmu-openface

Diagnostic information:

cmd: ['/usr/bin/env', 'th', '/usr/local/lib/python2.7/dist-packages/openface/openface_server.lua', '-model', '/home/trungdn/openface/demos/../models/openface/nn4.small2.v1.t7', '-imgDim', '96']

stdout:

Steps to reproduce.

I try to follow the instruction on issue #42 about using 32bit manchine
th> require 'nn'
th> require 'dpnn'
th> net = torch.load('/openface/nn4.small2.v1.ascii.t7', 'ascii')
cannot open </openface/nn4.small2.v1.ascii.t7> in mode r at /home/trungdn/torch/pkg/torch/lib/TH/THDiskFile.c:649
stack traceback:
[C]: at 0x76baa051
[C]: in function 'DiskFile'
/home/trungdn/torch/install/share/lua/5.1/torch/File.lua:405: in function 'load'
[string "net = torch.load('/openface/nn4.small2.v1.asc..."]:1: in main chunk
[C]: in function 'xpcall'
/home/trungdn/torch/install/share/lua/5.1/trepl/init.lua:669: in function 'repl'
...ngdn/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:199: in main chunk
[C]: at 0x00014895

When I run profile-network.lua
/home/trungdn/torch/install/bin/luajit: cannot open <./models/openface/nn4.small2.v1.t7> in mode r at /home/trungdn/torch/pkg/torch/lib/TH/THDiskFile.c:649
stack traceback:
[C]: at 0x76af2051
[C]: in function 'DiskFile'
/home/trungdn/torch/install/share/lua/5.1/torch/File.lua:405: in function 'load'
profile-network.lua:27: in main chunk
[C]: in function 'dofile'
...ngdn/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:145: in main chunk
[C]: at 0x00014895
trungdn@trungdn-desktop:~/openface/util$

Look like it can not find or open models file. But even with ascii models it still has the same issue.
I try to run those commands too but it stop in the middle

git clone https://github.com/mvitez/torch7.git mvittorch7
cd mvittorch7
luarocks make rocks/torch-scm-1.rockspec
lib/TH/CMakeFiles/TH.dir/build.make:134: recipe for target 'lib/TH/CMakeFiles/TH.dir/THTensor.c.o' failed
make[2]: *** [lib/TH/CMakeFiles/TH.dir/THTensor.c.o] Error 1
CMakeFiles/Makefile2:284: recipe for target 'lib/TH/CMakeFiles/TH.dir/all' failed
make[1]: *** [lib/TH/CMakeFiles/TH.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
lib/TH/CMakeFiles/TH_static.dir/build.make:134: recipe for target 'lib/TH/CMakeFiles/TH_static.dir/THTensor.c.o' failed
make[2]: *** [lib/TH/CMakeFiles/TH_static.dir/THTensor.c.o] Error 1
CMakeFiles/Makefile2:247: recipe for target 'lib/TH/CMakeFiles/TH_static.dir/all' failed
make[1]: *** [lib/TH/CMakeFiles/TH_static.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

Error: Build error: Failed building.

OS and hardware information.

• Operating system: [todo] ARMv8
• Torch version: [todo] LuaJIT 2.1.0-beta1
• CPU architecture: [todo]
• GPU type (if using): [todo]

[gauravkaila]

@trungdn , what was the solution to your problem? I am facing similar issues while using Nvidia Jetson TX1