Learn JAX with Real Code Examples
Updated Nov 24, 2025
Learning Path
Learn Python and NumPy fundamentals
Understand functional programming principles
Practice autograd and `grad` on simple functions
Experiment with `jit`, `vmap`, and `pmap`
Build research or ML pipelines using Flax/Optax/JAX
Skill Improvement Plan
Week 1: NumPy-like computations and arrays
Week 2: Automatic differentiation with `grad`
Week 3: JIT compilation and benchmarking
Week 4: Vectorization with `vmap` and parallelization with `pmap`
Week 5: Full ML pipelines with Flax/Optax and TPU/GPU acceleration
Interview Questions
What is JAX and how is it different from NumPy?
Explain `grad`, `jit`, `vmap`, and `pmap` with examples
How does JAX handle GPU/TPU acceleration?
How do you implement a neural network using JAX?
What are the advantages of composable transformations in JAX?
Cheat Sheet
Array = JAX array (like NumPy)
grad(f) = derivative of function f
jit(f) = compiled function for speed
vmap(f) = vectorized map over batches
pmap(f) = parallel map across devices
Books
Programming with JAX
Deep Learning with JAX and Flax
Hands-On Differentiable Programming
Functional Machine Learning in Python
JAX for Scientific Computing
Tutorials
JAX official tutorials
Flax/Optax example notebooks
YouTube walkthroughs for JAX ML pipelines
Colab examples for GPU/TPU acceleration
Hands-on exercises for vectorization and parallelization
Official Docs
https://jax.readthedocs.io/
https://github.com/google/jax
Community Links
JAX GitHub repository
StackOverflow JAX tag
Flax/Haiku communities
Reddit ML and AI research channels
Discord/Slack ML groups
Community Support
JAX GitHub repository
Google Research JAX discussions
StackOverflow JAX tag
Flax/Haiku communities
Reddit and Discord AI/ML channels