Book Image

Python Parallel Programming Cookbook

By : Giancarlo Zaccone
Book Image

Python Parallel Programming Cookbook

By: Giancarlo Zaccone

Overview of this book

This book will teach you parallel programming techniques using examples in Python and will help you explore the many ways in which you can write code that allows more than one process to happen at once. Starting with introducing you to the world of parallel computing, it moves on to cover the fundamentals in Python. This is followed by exploring the thread-based parallelism model using the Python threading module by synchronizing threads and using locks, mutex, semaphores queues, GIL, and the thread pool. Next you will be taught about process-based parallelism where you will synchronize processes using message passing along with learning about the performance of MPI Python Modules. You will then go on to learn the asynchronous parallel programming model using the Python asyncio module along with handling exceptions. Moving on, you will discover distributed computing with Python, and learn how to install a broker, use Celery Python Module, and create a worker. You will understand anche Pycsp, the Scoop framework, and disk modules in Python. Further on, you will learnGPU programming withPython using the PyCUDA module along with evaluating performance limitations.
Table of Contents (13 chapters)
Python Parallel Programming Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 3. Process-based Parallelism

In this chapter, we will cover the following recipes:

  • Using the multiprocessing Python module

  • How to spawn a process

  • How to name a process

  • How to run a process in the background

  • How to kill a process

  • How to use a process in a subclass

  • How to exchange objects between processes

  • Using a queue to exchange objects

  • Using pipes to exchange objects

  • How to synchronize processes

  • How to manage a state between processes

  • How to use a process pool

  • Using the mpi4py Python module

  • Point-to-point communication

  • Avoiding deadlock problems

  • Collective communication using broadcast

  • Collective communication using a scatter function

  • Collective communication using a gather function

  • Collective communication using AlltoAll

  • Reduction operation

  • How to optimize the communication