IPython Interactive Computing and Visualization Cookbook

Interacting with asynchronous parallel tasks in IPython

In this recipe, we will show how to interact with asynchronous tasks running in parallel with IPython.

Getting ready

You need to start the IPython engines (see the previous recipe). The simplest option is to launch them from the Clusters tab in the notebook dashboard. In this recipe, we use four engines.

How to do it…

1. Let's import a few modules:

   In [1]: import time
           import sys
           from IPython import parallel
           from IPython.display import clear_output, display
           from IPython.html import widgets

2. We create a Client:

   In [2]: rc = parallel.Client()

3. Now, we create a load-balanced view on the IPython engines:

   In [3]: view = rc.load_balanced_view()

4. We define a simple function for our parallel tasks:

   In [4]: def f(x): ...