Re: Python can't find the mvnc Module

idata · ‎09-12-2018

I've been trying to setup the movidius library created by intel, but I keep getting stuck when I try to import the mvnc package.

To set up mvnc I followed the directions here: https://www.pyimagesearch.com/2018/02/19/real-time-object-detection-on-the-raspberry-pi-with-the-movidius-ncs/

and when it comes time to test if the install works, I run

make examples

which gives this error whenever I run it.

Traceback (most recent call last):
  File "/usr/local/bin/mvNCCompile", line 25, in <module>
    from Models.Blob import *
  File "/usr/local/bin/ncsdk/Models/Blob.py", line 19, in <module>
    from Controllers.MiscIO import *
  File "/usr/local/bin/ncsdk/Controllers/MiscIO.py", line 35, in <module>
    from mvnc import mvncapi

So I'm wondering how it would be possible to get python to recognize the mvnc module so I can import it into any of my code. Thank you for your help!

I'm running Ubuntu 18.04.1 LTS in a virtual machine on a windows 10 computer

Here's the full command line output:

./install-opencv.sh
Installing opencv python for non-Raspbian
[sudo] password for odyssey: 
Requirement already satisfied: opencv-python in /usr/local/lib/python3.6/dist-packages
Requirement already satisfied: numpy>=1.11.3 in /usr/lib/python3/dist-packages (from opencv-python)
Requirement already satisfied: opencv-contrib-python in /usr/local/lib/python3.6/dist-packages
Requirement already satisfied: numpy>=1.11.3 in /usr/lib/python3/dist-packages (from opencv-contrib-python)

make examples starting.
(cd examples; make)
make[1]: Entering directory '/home/odyssey/workspace/ncsdk/examples'
make -C apps/. 
make[2]: Entering directory '/home/odyssey/workspace/ncsdk/examples/apps'
make -C hello_ncs_py/. 
make[3]: Entering directory '/home/odyssey/workspace/ncsdk/examples/apps/hello_ncs_py'
nothing to make, use 'make run' to run.
make[3]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/apps/hello_ncs_py'
make -C multistick_cpp/. 
make[3]: Entering directory '/home/odyssey/workspace/ncsdk/examples/apps/multistick_cpp'

making googlenet
(cd ../../caffe/GoogLeNet; make compile; cd ../../apps/multistick_cpp; cp ../../caffe/GoogLeNet/graph ./googlenet.graph;)
make[4]: Entering directory '/home/odyssey/workspace/ncsdk/examples/caffe/GoogLeNet'

making prereqs
(cd ../../data/ilsvrc12; make)
make[5]: Entering directory '/home/odyssey/workspace/ncsdk/examples/data/ilsvrc12'
make[5]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/data/ilsvrc12'

making prototxt
Prototxt file already exists

making caffemodel
caffemodel file already exists

making compile
mvNCCompile -w bvlc_googlenet.caffemodel -s 12 deploy.prototxt
Traceback (most recent call last):
  File "/usr/local/bin/mvNCCompile", line 25, in <module>
    from Models.Blob import *
  File "/usr/local/bin/ncsdk/Models/Blob.py", line 19, in <module>
    from Controllers.MiscIO import *
  File "/usr/local/bin/ncsdk/Controllers/MiscIO.py", line 35, in <module>
    from mvnc import mvncapi
ModuleNotFoundError: No module named 'mvnc'
Makefile:80: recipe for target 'compile' failed
make[4]: *** [compile] Error 1
make[4]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/caffe/GoogLeNet'
cp: cannot stat '../../caffe/GoogLeNet/graph': No such file or directory
Makefile:9: recipe for target 'googlenet' failed
make[3]: *** [googlenet] Error 1
make[3]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/apps/multistick_cpp'
Makefile:12: recipe for target 'multistick_cpp/.' failed
make[2]: *** [multistick_cpp/.] Error 2
make[2]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/apps'
Makefile:12: recipe for target 'apps/.' failed
make[1]: *** [apps/.] Error 2
make[1]: Leaving directory '/home/odyssey/workspace/ncsdk/examples'
Makefile:57: recipe for target 'examples' failed
make: *** [examples] Error 2

idata · ‎09-12-2018

@Cynopolis Were you able to install the NCSDK successfully? Can you post the install log here? After a successful installation, make sure you run make examples in a new terminal window so that the pythonpath is set. You can check the pythonpath after installation by opening a new terminal window and typing in the following command: echo $PYTHONPATH

idata · ‎09-13-2018

Sure, I added a link to the install log because it's too long to just paste in. The install did go successfully.

and this is the output I get when I run echo $PYTHONPATH

:/opt/movidius/caffe/python

Here's the link to the install log:

https://drive.google.com/open?id=1q2FmC9aB2h_wvS8FiGnBV7kFE88RNdo9

idata · ‎09-13-2018

@Cynopolis Okay it looks like your install was successful. Can you do me a favor and go into one of the example folders like AgeNet, GenderNet or SqueezeNet and type in the command make run and see if it is able to run correctly? Thanks.

idata · ‎09-14-2018

making prereqs
(cd ../../data/ilsvrc12; make)
make[1]: Entering directory '/home/odyssey/workspace/ncsdk/examples/data/ilsvrc12'
make[1]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/data/ilsvrc12'

making prototxt
Prototxt file already exists

making caffemodel
caffemodel file already exists

making compile
mvNCCompile -w bvlc_googlenet.caffemodel -s 12 deploy.prototxt
Traceback (most recent call last):
  File "/usr/local/bin/mvNCCompile", line 25, in <module>
    from Models.Blob import *
  File "/usr/local/bin/ncsdk/Models/Blob.py", line 19, in <module>
    from Controllers.MiscIO import *
  File "/usr/local/bin/ncsdk/Controllers/MiscIO.py", line 35, in <module>
    from mvnc import mvncapi
ModuleNotFoundError: No module named 'mvnc'
Makefile:80: recipe for target 'compile' failed
make: *** [compile] Error 1

That's the error I get when I try to run GoogLeNet, I also tried both AlexNet and SqueezeNet and I get the same problem.

idata · ‎09-16-2018

Does anyone know how I could solve this problem? I'm thinking python doesn't know where the mvncapi.py file is, so is there a way to point it to that file?

idata · ‎09-16-2018

@Cynopolis

How is your environment variable registered?

$ sudo find / -name mvncapi.py
/usr/local/lib/python3.5/dist-packages/mvnc/mvncapi.py
/usr/local/lib/python2.7/dist-packages/mvnc/mvncapi.py
/home/xxxx/ncsdk/api/python/mvnc/mvncapi.py
/opt/movidius/NCSDK/ncsdk-armv7l/api/python/mvnc/mvncapi.py
/opt/movidius/NCSDK/ncsdk-x86_64/api/python/mvnc/mvncapi.py

Below is mine.

$ echo $PYTHONPATH
:/opt/movidius/caffe/python:/usr/local/lib

If "/usr/local/lib" is not displayed, the environment is wrong.

idata · ‎09-16-2018

Here's my out put for

sudo find / -name mvncapi.py
[sudo] password for odyssey: 
/home/odyssey/.local/share/Trash/files/workspace/ncsdk/api/python/mvnc/mvncapi.py
/home/odyssey/workspace/ncsdk/api/python/mvnc/mvncapi.py
/home/odyssey/workspace/mvncsdk/ncsdk-1.12.00.01/api/python/mvnc/mvncapi.py
find: ‘/run/user/1000/gvfs’: Permission denied
/opt/movidius/NCSDK/ncsdk-armv7l/api/python/mvnc/mvncapi.py
/opt/movidius/NCSDK/ncsdk-x86_64/api/python/mvnc/mvncapi.py
/usr/local/lib/python3.6/dist-packages/mvnc/mvncapi.py
/usr/local/lib/python2.7/dist-packages/mvnc/mvncapi.py

and here's my output for

echo $PYTHONPATH
:/opt/movidius/caffe/python

as you can see "usr/local/lib" isn't there, is there a way to fix that?

idata · ‎09-16-2018

@Cynopolis

$ export PYTHONPATH=$PYTHONPATH:/usr/local/lib:/usr/local/lib/python3.6/dist-packages/mvnc

idata · ‎09-17-2018

I ran that command and now my python path looks like:

echo $PYTHONPATH
:/opt/movidius/caffe/python:/usr/local/lib:/usr/local/lib/python3.6/dist-packages/mvnc

but I ran make examples, and still got the same error:

./install-opencv.sh
Installing opencv python for non-Raspbian
[sudo] password for odyssey: 
Requirement already satisfied: opencv-python in /usr/local/lib/python3.6/dist-packages
Requirement already satisfied: numpy>=1.11.3 in /usr/lib/python3/dist-packages (from opencv-python)
Requirement already satisfied: opencv-contrib-python in /usr/local/lib/python3.6/dist-packages
Requirement already satisfied: numpy>=1.11.3 in /usr/lib/python3/dist-packages (from opencv-contrib-python)

make examples starting.
(cd examples; make)
make[1]: Entering directory '/home/odyssey/workspace/ncsdk/examples'
make -C apps/. 
make[2]: Entering directory '/home/odyssey/workspace/ncsdk/examples/apps'
make -C hello_ncs_py/. 
make[3]: Entering directory '/home/odyssey/workspace/ncsdk/examples/apps/hello_ncs_py'
nothing to make, use 'make run' to run.
make[3]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/apps/hello_ncs_py'
make -C multistick_cpp/. 
make[3]: Entering directory '/home/odyssey/workspace/ncsdk/examples/apps/multistick_cpp'

making googlenet
(cd ../../caffe/GoogLeNet; make compile; cd ../../apps/multistick_cpp; cp ../../caffe/GoogLeNet/graph ./googlenet.graph;)
make[4]: Entering directory '/home/odyssey/workspace/ncsdk/examples/caffe/GoogLeNet'

making prereqs
(cd ../../data/ilsvrc12; make)
make[5]: Entering directory '/home/odyssey/workspace/ncsdk/examples/data/ilsvrc12'
make[5]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/data/ilsvrc12'

making prototxt
Prototxt file already exists

making caffemodel
caffemodel file already exists

making compile
mvNCCompile -w bvlc_googlenet.caffemodel -s 12 deploy.prototxt
Traceback (most recent call last):
  File "/usr/local/bin/mvNCCompile", line 25, in <module>
    from Models.Blob import *
  File "/usr/local/bin/ncsdk/Models/Blob.py", line 19, in <module>
    from Controllers.MiscIO import *
  File "/usr/local/bin/ncsdk/Controllers/MiscIO.py", line 35, in <module>
    from mvnc import mvncapi
ImportError: cannot import name 'mvncapi'
Makefile:80: recipe for target 'compile' failed
make[4]: *** [compile] Error 1
make[4]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/caffe/GoogLeNet'
cp: cannot stat '../../caffe/GoogLeNet/graph': No such file or directory
Makefile:9: recipe for target 'googlenet' failed
make[3]: *** [googlenet] Error 1
make[3]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/apps/multistick_cpp'
Makefile:12: recipe for target 'multistick_cpp/.' failed
make[2]: *** [multistick_cpp/.] Error 2
make[2]: Leaving directory '/home/odyssey/workspace/ncsdk/examples/apps'
Makefile:12: recipe for target 'apps/.' failed
make[1]: *** [apps/.] Error 2
make[1]: Leaving directory '/home/odyssey/workspace/ncsdk/examples'
Makefile:57: recipe for target 'examples' failed
make: *** [examples] Error 2

idata · ‎09-17-2018

@Cynopolis Maybe your bash .profile file isn't loading your .bashrc file. https://askubuntu.com/questions/161249/bashrc-not-executed-when-opening-new-terminal

idata · ‎09-18-2018

I checked to see if both .bashrc and .profile existed in my home folder, and they do. By the looks of it, the .profile script is correctly locating the .bachrc file and loading it. Here's that code:

# if running bash
if [ -n "$BASH_VERSION" ]; then
    # include .bashrc if it exists
    if [ -f "$HOME/.bashrc" ]; then
        . "$HOME/.bashrc"
    fi
fi

idata · ‎09-18-2018

@Cynopolis It could be related to line endings depending on how you got the NCSDK. I recommend removing and re-downloading the NCSDK. Try the following steps:

Uninstall your current NCSDK by using the uninstall.sh script in the ncsdk folder.

Delete your current NCSDK folder.

Get a new copy of the NCSDK files using the command: wget https://ncs-forum-uploads.s3.amazonaws.com/ncsdk/ncsdk-01_12_00_01-full/ncsdk-1.12.00.01.tar.gz

Extract the files using the command tar xvf ncsdk-1.12.00.01.tar.gz

Install the NCSDK by typing in cd ncsdk-1.12.00.01 and then make install

Afterwards, try typing in the command: make examples

Let me know if this works for you.

idata · ‎09-18-2018

I have the same issue but have been waiting for a reply.

Isn't this going back to version 1 of the SDK? Not version 2?

idata · ‎09-20-2018

I am also facing the exact problem. Make install successful but make examples failed. I tried several ways to make it run. None of the ways is working!

idata · ‎09-21-2018

@mthakkar Hi, have you tried going through each of the steps I listed above to see if they work for you? Please try each step even if it seems redundant and I'd appreciate it if you could let me know if it works/doesn't work. Thanks.

@chicagobob123 Yeah, this was for NCSDK v1.12 as that is the version being installed by Cynopolis. If NCSDK v2.05 is desired, you can just replace the wget command with: wget https://ncs-forum-uploads.s3.amazonaws.com/ncsdk/ncsdk-02_05_00_02-full/ncsdk-2.05.00.02.tar.gz

idata · ‎09-21-2018

I will try and reinstall the thing from scratch this asap. Let you know.

Something is going on. I traced the path down and there was no mnvc anything to compile anything.

Not sure whats going on. The installations seem more unstable now than ever.

idata · ‎09-24-2018

@chicagobob123 I just tried installing NCSDK 2.05.00.02 on a fresh machine and using steps 3-6 (but for ncsdk 2.05) from above and I didn't have any issues. This was on an HP Envy laptop running Ubuntu 16.04.

Get a new copy of the NCSDK files using the command: wget https://ncs-forum-uploads.s3.amazonaws.com/ncsdk/ncsdk-02_05_00_02-full/ncsdk-2.05.00.02.tar.gz

Extract the files using the command tar xvf ncsdk-2.05.00.02.tar.gz

Install the NCSDK by typing in cd ncsdk-2.05.00.02 and then make install

Afterwards, plug your NCS device into your machine and try typing in the command make examples

idata · ‎09-24-2018

I got through this and it seems to work. You had the instructions down pretty good except you didn't mention I needed the stick plugged in to build. I know it should have been a given, just saying that it needs to be plugged in. Now back to getting my Pi working again.

idata · ‎09-24-2018

@chicagobob123 I'll make the edit. Thanks.

idata · ‎10-01-2018

I installed SDK at an Ubuntu 16.04 lattepanda with intel processor. Initially MVNC did not import, after this I tried with sudo, then it worked. Since this, I can only run it with sudo. It has not been a problem since then, but trying to run the examples, the caffe library cannot be imported. it shows that caffe is not installed with sudo, without sudo it shows the following error: ImportError: /opt/movidius/ssd-caffe/build/lib/libcaffe.so.1.0.0-rc3: undefined symbol: _ZN6google4base21CheckOpMessageBuilder9NewStringB5cxx11Ev

I did a fresh installation of the movidius SDK and caffe, but the problem persist.