Use of multiprocessing

The oldest approach that is possible comes with the standard library and can be found in the multiprocessing module.

A Pool class is available here, which offers a context manager to manage our workload.

It’s map method can be used to map a callable on a list of inputs.

As the function that is called is not allowed to have more than one parameter, we have to modify our function call by using functools.partial to settle all the other parameters that can considered to be constant.

Once all method calls have been executed, the result contains all return values in a list matching the length of the input array. This in turn is our desired 2D iterations array again.