Book Image

Python Parallel Programming Cookbook - Second Edition

By : Giancarlo Zaccone
Book Image

Python Parallel Programming Cookbook - Second Edition

By: Giancarlo Zaccone

Overview of this book

<p>Nowadays, it has become extremely important for programmers to understand the link between the software and the parallel nature of their hardware so that their programs run efficiently on computer architectures. Applications based on parallel programming are fast, robust, and easily scalable. </p><p> </p><p>This updated edition features cutting-edge techniques for building effective concurrent applications in Python 3.7. The book introduces parallel programming architectures and covers the fundamental recipes for thread-based and process-based parallelism. You'll learn about mutex, semaphores, locks, queues exploiting the threading, and multiprocessing modules, all of which are basic tools to build parallel applications. Recipes on MPI programming will help you to synchronize processes using the fundamental message passing techniques with mpi4py. Furthermore, you'll get to grips with asynchronous programming and how to use the power of the GPU with PyCUDA and PyOpenCL frameworks. Finally, you'll explore how to design distributed computing systems with Celery and architect Python apps on the cloud using PythonAnywhere, Docker, and serverless applications. </p><p> </p><p>By the end of this book, you will be confident in building concurrent and high-performing applications in Python.</p>
Table of Contents (16 chapters)
Title Page

What is software testing?

As mentioned in the introduction of this chapter, software testing is a process used to identify deficiencies of correctness, completeness, and reliability in a software product that is being developed.

With this activity, we, therefore, want to ensure the quality of the product by searching search for defects, or a sequence of instructions and procedures that, when executed with particular input data and in particular operating environments, generate malfunctions. A malfunction is a behavior of the software that is not expected by the user; therefore, it is different from the specifications and from the implicit or explicit requirements defined for such applications. 

The purpose of testing is, therefore, to detect defects through malfunctions, so as to minimize the probability of such malfunctions occurring in the normal use of the software...