evorl

EvoRL is a fully GPU-accelerated framework for Evolutionary Reinforcement Learning, implemented with JAX. It supports Reinforcement Learning (RL), Evolutionary Computation (EC), Evolution-guided Reinforcement Learning (ERL), AutoRL, and seamless integration with GPU-optimized simulation environments.

24 articles 264 View on GitHub ↗
24 articles
How to Debug JIT Compilation Errors and Profile JAX Training Pipelines in EvoRL

Debug JIT errors and profile JAX training in EvoRL easily. Disable JIT, inspect compiled code with jax.debug.print, and analyze performance using jax.profiler and TensorBoard.

how-to-guide
Mar 1, 2026
How to Create Custom Neural Network Architectures for Policies in EvoRL

Learn to build custom neural network architectures for policies in EvoRL. Use the flexible make_policy_network factory to easily assemble MLP, CNN, and normalization components for your AI agents.

how-to-guide
Mar 1, 2026
How to Save and Load Model Checkpoints Using Orbax in EvoRL

Learn to efficiently save and load model checkpoints using Orbax in EvoRL. Explore helper functions and the Checkpoint Manager for seamless training.

how-to-guide
Mar 1, 2026
How to Implement On-Policy Algorithms (PPO, A2C, IMPALA) in EvoRL

Implement PPO A2C and IMPALA on policy algorithms in EvoRL easily. Discover how EvoRL's modular workflow simplifies training pipelines with custom agent factories and loss functions.

how-to-guide
Mar 1, 2026
How to Implement Off-Policy Algorithms (SAC, TD3, DDPG) in EvoRL: A Complete Guide

Easily implement SAC, TD3, and DDPG off-policy algorithms in EvoRL. Follow our guide to create agent classes and leverage OffPolicyWorkflowTemplate for efficient training.

how-to-guide
Mar 1, 2026
How to Optimize Training Performance Using `jax.jit` and `jax.vmap` in EvoRL

Optimize EvoRL training with jax.jit and jax.vmap. Compile loops and vectorize operations for faster execution and better GPU/TPU use. Eliminate Python overhead.

performance
Mar 1, 2026
How to Integrate Custom Evolutionary Computation (EC) Components with RL Workflows in EvoRL

Integrate custom EC components into EvoRL by implementing the EvoOptimizer abstract base class with init ask and tell methods. Learn how to inject your optimizer into hybrid ERL or pure EC workflows in this guide.

how-to-guide
Mar 1, 2026
How to Leverage EvoRL's Object-Oriented Functional Programming Model with JAX jit

Learn how EvoRL uses JAX jit with its object-oriented functional programming model. Discover how class instances act as static containers for pure functional kernels and immutable pytrees.

how-to-guide
Mar 1, 2026
How to Create Custom Environment Wrappers in EvoRL: A Complete Guide

Learn to create custom environment wrappers in EvoRL by subclassing Wrapper. Override step and expose new spaces to transform actions, observations, and rewards effectively.

how-to-guide
Mar 1, 2026
How to Set Up Logging with LogRecorder and WandbRecorder in EvoRL

Learn to set up logging in EvoRL with LogRecorder and WandbRecorder. Effortlessly track local metrics and visualize progress on Weights & Biases dashboards. Get started now.

how-to-guide
Mar 1, 2026
How to Implement Cross-Entropy Method for RL (CEM-RL) with Covariance Adaptation in EvoRL

Implement Cross-Entropy Method for RL with covariance adaptation in EvoRL. Configure SepCEM optimizer with ExponentialScheduleSpec for adaptive diagonal covariance decay. Get started today.

how-to-guide
Mar 1, 2026
How to Use PyTreeDict, PyTreeData, and PyTreeNode for JAX-Compatible Data Structures in EvoRL

Leverage PyTreeDict, PyTreeData, and PyTreeNode in EvoRL for JAX-compatible data structures. Effectively manage configurations, immutable data, and mutable state with JAX's JIT compilation and vectorization.

how-to-guide
Mar 1, 2026

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