GPU Support | Akash Network - Your Guide to Decentralized Cloud

This guide shows how to enable NVIDIA GPU support on your Akash provider after Kubernetes is deployed.

Don’t have GPUs? Skip to Persistent Storage (Rook-Ceph) or Provider Installation.

Prerequisites: You must have already configured the NVIDIA runtime in Kubespray before deploying your cluster. See Kubernetes Setup - Step 7.

Time: 30-45 minutes

STEP 1 - Install NVIDIA Drivers

Run these commands on each GPU node:

Update System

apt update
DEBIAN_FRONTEND=noninteractive apt -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" dist-upgrade
apt autoremove

Reboot the node after this step.

Add NVIDIA Repository

wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2404/x86_64/3bf863cc.pub
apt-key add 3bf863cc.pub
echo "deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2404/x86_64/ /" | tee /etc/apt/sources.list.d/cuda-repo.list
apt update

Install Driver

Install the recommended NVIDIA driver version 580:

DEBIAN_FRONTEND=noninteractive apt -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install nvidia-driver-580
apt -y autoremove

Reboot the node.

Verify Installation

nvidia-smi

You should see your GPUs listed with driver information.

SXM GPUs Only

If you have non-PCIe GPUs (SXM form factor), also install Fabric Manager:

apt-get install nvidia-fabricmanager-580
systemctl start nvidia-fabricmanager
systemctl enable nvidia-fabricmanager

STEP 2 - Install NVIDIA Container Toolkit

Run on each GPU node:

curl -s -L https://nvidia.github.io/libnvidia-container/gpgkey | apt-key add -
curl -s -L https://nvidia.github.io/libnvidia-container/stable/deb/nvidia-container-toolkit.list | tee /etc/apt/sources.list.d/libnvidia-container.list

apt-get update
apt-get install -y nvidia-container-toolkit nvidia-container-runtime

STEP 3 - Configure NVIDIA CDI

Run on each GPU node:

Generate CDI Specification

sudo nvidia-ctk cdi generate --output=/etc/cdi/nvidia.yaml

Configure NVIDIA Runtime

Edit /etc/nvidia-container-runtime/config.toml and ensure these lines are uncommented and set to:

accept-nvidia-visible-devices-as-volume-mounts = false
accept-nvidia-visible-devices-envvar-when-unprivileged = true

Note: This setup uses CDI (Container Device Interface) for device enumeration, which provides better security and device management.

STEP 4 - Create NVIDIA RuntimeClass

Run from a control plane node:

cat > nvidia-runtime-class.yaml << 'EOF'
kind: RuntimeClass
apiVersion: node.k8s.io/v1
metadata:
  name: nvidia
handler: nvidia
EOF

kubectl apply -f nvidia-runtime-class.yaml

STEP 5 - Label GPU Nodes

Label each GPU node (replace <node-name> with actual node name):

kubectl label nodes <node-name> allow-nvdp=true

Verify Labels

kubectl describe node <node-name> | grep -A5 Labels

You should see allow-nvdp=true.

STEP 6 - Install NVIDIA Device Plugin

Run from a control plane node:

helm repo add nvdp https://nvidia.github.io/k8s-device-plugin
helm repo update

helm upgrade -i nvdp nvdp/nvidia-device-plugin \
  --namespace nvidia-device-plugin \
  --create-namespace \
  --version 0.18.0 \
  --set runtimeClassName="nvidia" \
  --set deviceListStrategy=cdi-cri \
  --set nvidiaDriverRoot="/" \
  --set-string nodeSelector.allow-nvdp="true"

Verify Installation

kubectl -n nvidia-device-plugin get pods -o wide

You should see nvdp-nvidia-device-plugin pods running on your GPU nodes.

Check Logs

kubectl -n nvidia-device-plugin logs -l app.kubernetes.io/instance=nvdp

Expected output:

Detected NVML platform: found NVML library
Starting GRPC server for 'nvidia.com/gpu'
Registered device plugin for 'nvidia.com/gpu' with Kubelet

STEP 7 - Test GPU Functionality

Create a test pod:

cat > gpu-test-pod.yaml << 'EOF'
apiVersion: v1
kind: Pod
metadata:
  name: gpu-test
spec:
  restartPolicy: Never
  runtimeClassName: nvidia
  containers:
    - name: cuda-container
      image: nvcr.io/nvidia/k8s/cuda-sample:vectoradd-cuda11.6.0
      resources:
        limits:
          nvidia.com/gpu: 1
  tolerations:
  - key: nvidia.com/gpu
    operator: Exists
    effect: NoSchedule
EOF

kubectl apply -f gpu-test-pod.yaml

Verify Test

Wait for the pod to complete, then check logs:

kubectl logs gpu-test

Expected output:

[Vector addition of 50000 elements]
Copy input data from the host memory to the CUDA device
CUDA kernel launch with 196 blocks of 256 threads
Copy output data from the CUDA device to the host memory
Test PASSED
Done

Test nvidia-smi

Create an interactive test:

kubectl run gpu-shell --rm -it --restart=Never --image=nvidia/cuda:11.6.0-base-ubuntu20.04 -- nvidia-smi

You should see GPU information displayed.

Cleanup

kubectl delete pod gpu-test

Next Steps

Your Kubernetes cluster now has GPU support!

Optional enhancements:

TLS Certificates - Automatic SSL certificates
IP Leases - Enable static IPs

Note: After installing the provider, you’ll need to add GPU attributes to your provider.yaml to advertise GPU capabilities. This is covered in the Provider Installation guide.