In this article, author will first walk you through the distinction between concurrent programming and parallel execution, discuss about Python built-ins concurrent programming mechanisms and the pitfalls of multi-threading in Python. By Melvin Koh.
Concurrent programming is not equivalent to parallel execution, despite the fact that these two terms are often being used interchangeably.
Concurrency is a property which more than one operation can be run simultaneously but it doesn’t mean it will be. (Imagine if your processor is single-threaded)
Parallel is a property which operations are actually being run simultaneously. It is usually determined by the hardware constraints.
The article content is split into few sections:
- Understanding Concurrent Programming vs Parallel Execution
- Python Built-ins
- What is Global Interpreter Lock (GIL)?
- How to bypass GIL?
- Multiprocessing – Process-based Parallelism
The constraint of GIL was something that caught author in the very beginning of time as a Python developer. Good read![Read More]