pvlink

ParaView-Web RemoteRenderer in Jupyter

Installation

You can install pvlink using pip.

$ pip install pvlink

If you are using Jupyter Notebook 5.2 or earlier, you may also need to enable the nbextension:

$ jupyter nbextension enable --py [--sys-prefix|--user|--system] pvlink

To enable pvlink with Jupyter lab, make sure the Jupyter widgets extension is installed, and install the pvlink extension:

$ jupyter labextension install @jupyter-widgets/jupyterlab-manager # install the Jupyter widgets extension
$ jupyter labextension install pvlink

Usage

For examples see the example notebook.
The RemoteRenderer additionally requires the paraview.simple and paraview.web modules.

Jupyter Proxy Setup (using nginx)

To enable streaming these settings need to be set, in the nginx config file for Jupyter (for example: in /etc/nginx/conf.d/):

# top-level http config for websocket headers
# If Upgrade is defined, Connection = upgrade
# If Upgrade is empty, Connection = close
map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

... location ... {
   ...
           # websocket headers
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
  ...
}

An unused stream is automatically disconnected by nginx, after proxy_read_timeout's seconds are exceeded. The default value of 60s is reached quite fast, therefore it is recommended to increase this value. For example:

# HTTPS server to handle JupyterHub
server {
    listen 443 ssl;
    ...
    proxy_read_timeout 3600s;
    ...

Changelog

See Changelog