Uses the multiprocessing package to run many processes in parallel.

Check the example.py code to get started.

To run the example simply use python interactive mode: python -i example.py

And run both the linear and the parallelized function:

>>> a = check_collatz_linear(10**6)
Execution of check_collatz_linear took: 0:00:09.387807

>>> b = check_collatz_until(10**6)
Execution of check_collatz_until took: 0:00:01.196699