This document is relevant for: Inf1, Inf2, Trn1, Trn2, Trn3

Install JAX Manually

Install JAX with Neuron support on existing systems using pip.

⏱️ Estimated time: 15 minutes

Prerequisites

Requirement	Details
Instance Type	Inf2, Trn1, Trn2, or Trn3
Operating System	Ubuntu 26.04, Ubuntu 24.04, or Amazon Linux 2023. For the tested Linux kernel and GLIBC versions, see Neuron Runtime and Driver compatibility reference.
Python	Python 3.11, 3.12, 3.13, or 3.14
Sudo Access	Required for driver installation
Internet Access	For downloading packages

Installation Steps

Ubuntu 24.04

Step 1: Update System Packages

sudo apt-get update
sudo apt-get install -y python3-pip python3-venv

Step 2: Configure Neuron Repository

# Add Neuron repository
. /etc/os-release
sudo install -m 0755 -d /etc/apt/keyrings
sudo tee /etc/apt/sources.list.d/neuron.list > /dev/null <<EOF
deb [signed-by=/etc/apt/keyrings/neuron.gpg] https://apt.repos.neuron.amazonaws.com ${VERSION_CODENAME} main
EOF

# Add repository key
wget -qO - https://apt.repos.neuron.amazonaws.com/GPG-PUB-KEY-AMAZON-AWS-NEURON.PUB | sudo gpg --batch --yes --dearmor -o /etc/apt/keyrings/neuron.gpg

# Update package list
sudo apt-get update

Step 3: Install Neuron Driver and Runtime

sudo apt-get install -y aws-neuronx-dkms
sudo apt-get install -y aws-neuronx-runtime-lib
sudo apt-get install -y aws-neuronx-collectives

Step 4: Create Virtual Environment

python3.11 -m venv ~/neuron_venv_jax
source ~/neuron_venv_jax/bin/activate

Step 5: Install JAX and Neuron Packages

pip install -U pip
pip install jax-neuronx[stable] --extra-index-url=https://pip.repos.neuron.amazonaws.com

Step 6: Verify Installation

python3 << EOF
import jax
import jax_neuronx

print(f"JAX version: {jax.__version__}")
print(f"Devices: {jax.devices()}")

# Check Neuron devices
import subprocess
result = subprocess.run(['neuron-ls'], capture_output=True, text=True)
print(result.stdout)
EOF

⚠️ Troubleshooting: GPG key error

If you see “EXPKEYSIG” error during apt-get update:

sudo install -m 0755 -d /etc/apt/keyrings
wget -qO - https://apt.repos.neuron.amazonaws.com/GPG-PUB-KEY-AMAZON-AWS-NEURON.PUB | sudo gpg --batch --yes --dearmor -o /etc/apt/keyrings/neuron.gpg
sudo apt-get update -y

⚠️ Troubleshooting: Driver installation failed

If driver installation fails:

1. Check kernel headers are installed:

   sudo apt-get install -y linux-headers-$(uname -r)
   

2. Retry driver installation:

   sudo apt-get install --reinstall aws-neuronx-dkms
   

Ubuntu 26.04

Step 1: Update System Packages

sudo apt-get update
sudo apt-get install -y python3-pip python3-venv

Step 2: Configure Neuron Repository

# Add Neuron repository
. /etc/os-release
sudo install -m 0755 -d /etc/apt/keyrings
sudo tee /etc/apt/sources.list.d/neuron.list > /dev/null <<EOF
deb [signed-by=/etc/apt/keyrings/neuron.gpg] https://apt.repos.neuron.amazonaws.com ${VERSION_CODENAME} main
EOF

# Add repository key
wget -qO - https://apt.repos.neuron.amazonaws.com/GPG-PUB-KEY-AMAZON-AWS-NEURON.PUB | sudo gpg --batch --yes --dearmor -o /etc/apt/keyrings/neuron.gpg

# Update package list
sudo apt-get update

Step 3: Install Neuron Driver and Runtime

sudo apt-get install -y aws-neuronx-dkms
sudo apt-get install -y aws-neuronx-runtime-lib
sudo apt-get install -y aws-neuronx-collectives

Step 4: Create Virtual Environment

python3.14 -m venv ~/neuron_venv_jax
source ~/neuron_venv_jax/bin/activate

Step 5: Install JAX and Neuron Packages

pip install -U pip
pip install jax-neuronx[stable] --extra-index-url=https://pip.repos.neuron.amazonaws.com

Step 6: Verify Installation

python3 << EOF
import jax
import jax_neuronx

print(f"JAX version: {jax.__version__}")
print(f"Devices: {jax.devices()}")

# Check Neuron devices
import subprocess
result = subprocess.run(['neuron-ls'], capture_output=True, text=True)
print(result.stdout)
EOF

⚠️ Troubleshooting: GPG key error

If you see “EXPKEYSIG” error during apt-get update:

sudo install -m 0755 -d /etc/apt/keyrings
wget -qO - https://apt.repos.neuron.amazonaws.com/GPG-PUB-KEY-AMAZON-AWS-NEURON.PUB | sudo gpg --batch --yes --dearmor -o /etc/apt/keyrings/neuron.gpg
sudo apt-get update -y

⚠️ Troubleshooting: Driver installation failed

If driver installation fails:

1. Check kernel headers are installed:

   sudo apt-get install -y linux-headers-$(uname -r)
   

2. Retry driver installation:

   sudo apt-get install --reinstall aws-neuronx-dkms
   

Amazon Linux 2023

Step 1: Update System Packages

sudo yum update -y
sudo yum install -y python3-pip python3-devel

Step 2: Configure Neuron Repository

# Add Neuron repository
sudo tee /etc/yum.repos.d/neuron.repo > /dev/null <<EOF
[neuron]
name=Neuron YUM Repository
baseurl=https://yum.repos.neuron.amazonaws.com
enabled=1
metadata_expire=0
EOF

# Import GPG key
sudo rpm --import https://yum.repos.neuron.amazonaws.com/GPG-PUB-KEY-AMAZON-AWS-NEURON.PUB

Step 3: Install Neuron Driver and Runtime

sudo yum install -y aws-neuronx-dkms
sudo yum install -y aws-neuronx-runtime-lib
sudo yum install -y aws-neuronx-collectives

Step 4: Create Virtual Environment

python -m venv ~/neuron_venv_jax
source ~/neuron_venv_jax/bin/activate

Step 5: Install JAX and Neuron Packages

pip install -U pip
pip install jax-neuronx[stable] --extra-index-url=https://pip.repos.neuron.amazonaws.com

Step 6: Verify Installation

python3 << EOF
import jax
import jax_neuronx

print(f"JAX version: {jax.__version__}")
print(f"Devices: {jax.devices()}")

# Check Neuron devices
import subprocess
result = subprocess.run(['neuron-ls'], capture_output=True, text=True)
print(result.stdout)
EOF

⚠️ Troubleshooting: Repository access error

If you cannot access the Neuron repository:

1. Verify network connectivity

2. Check proxy settings if behind corporate firewall

3. Ensure GPG key is imported correctly

⚠️ Troubleshooting: Driver installation failed

Ensure kernel-devel package is installed:

sudo yum install -y kernel-devel-$(uname -r)

Next Steps

Now that JAX is installed:

1. Try a Quick Example:

   import jax
   import jax.numpy as jnp
   
   # Simple operation on Neuron
   x = jnp.array([1.0, 2.0, 3.0])
   y = jnp.array([4.0, 5.0, 6.0])
   result = jax.numpy.multiply(x, y)
   print(result)
   

2. Read Documentation:

   • JAX Support on Neuron

   • API Reference Guide for JAX Neuronx

3. Explore Setup Guide:

   • Install JAX for Neuron

Additional Resources

• Install JAX via Deep Learning AMI - Use pre-configured DLAMI instead

• Install JAX via Deep Learning Container - Use pre-configured Docker containers

• Deploy on AWS - Container-based deployment

• Installation Troubleshooting - Common issues and solutions

• AWS Neuron SDK Release Notes - Version compatibility information

This document is relevant for: Inf1, Inf2, Trn1, Trn2, Trn3