Dr. Dror

Foo is not just a "Bar"

Running Visdom examples within a Docker container

Docker could be a great tool when you want to try out new technologies without taking the risk of breaking your own system. I decided to use Docker when having a quick look into Visdom the new toy from Facebook. I'll outline the steps I took.

Start a minimal container

Here I decided to use the readymade continuumio/anaconda3. I started a container:

docker run -i -t -p 8097:8097 -v ~/tmp:/opt/notebooks --name visdom-test continuumio/anaconda3 /bin/bash

Next, I installed Visdom:

pip install visdom

Lastly, I could run the server:

python -m visdom.server

At this point I could open http://localhost:8097 and see the empty visualization.

Running some examples

Basic example

I placed a file fb-visdom-example.py in ~/tmp containing the example:

import visdom
import numpy as np
vis = visdom.Visdom()
vis.text('Hello, world!')
vis.image(np.ones((3, 10, 10)))

Then, I started another bash process on my container:

docker exec -it visdom-test /bin/bash

From the new console I could run the example python /opt/notebooks/fb-visdom-example.py

Running demo.py

Now, I wanted to run demo.py. To that end I simply cloned the repository:

cd /
git clone https://github.com/facebookresearch/visdom.git

and ran the example python /visdom/example/demo.py. As a matter of fact, this example breaks on this setting with the following error:

Traceback (most recent call last):
  File "visdom/example/demo.py", line 232, in <module>
    viz.mesh(X=X, Y=Y, opts=dict(opacity=0.5))
AttributeError: 'Visdom' object has no attribute 'mesh'

It is almost the end of the demo, but still a little annoying; I opened a bug. It turns out that you'd have to install Visdom from the sources and not using pip in order to avoid this problem.