Deploying Red Hat AI Inference Server in OpenShift Container Platform

Procedure

1. Create the Namespace CR for the Node Feature Discovery Operator:

   oc apply -f - <<EOF
   apiVersion: v1
   kind: Namespace
   metadata:
     name: openshift-nfd
     labels:
       name: openshift-nfd
       openshift.io/cluster-monitoring: "true"
   EOF

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2. Create the OperatorGroup CR:

   oc apply -f - <<EOF
   apiVersion: operators.coreos.com/v1
   kind: OperatorGroup
   metadata:
     generateName: openshift-nfd-
     name: openshift-nfd
     namespace: openshift-nfd
   spec:
     targetNamespaces:
     - openshift-nfd
   EOF

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3. Create the Subscription CR:

   oc apply -f - <<EOF
   apiVersion: operators.coreos.com/v1alpha1
   kind: Subscription
   metadata:
     name: nfd
     namespace: openshift-nfd
   spec:
     channel: "stable"
     installPlanApproval: Automatic
     name: nfd
     source: redhat-operators
     sourceNamespace: openshift-marketplace
   EOF

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Procedure

1. Create the Namespace CR for the NVIDIA GPU Operator:

   oc apply -f - <<EOF
   apiVersion: v1
   kind: Namespace
   metadata:
     name: nvidia-gpu-operator
   EOF

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2. Create the OperatorGroup CR:

   oc apply -f - <<EOF
   apiVersion: operators.coreos.com/v1
   kind: OperatorGroup
   metadata:
     name: gpu-operator-certified
     namespace: nvidia-gpu-operator
   spec:
    targetNamespaces:
    - nvidia-gpu-operator
   EOF

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3. Create the Subscription CR:

   oc apply -f - <<EOF
   apiVersion: operators.coreos.com/v1alpha1
   kind: Subscription
   metadata:
     name: gpu-operator-certified
     namespace: nvidia-gpu-operator
   spec:
     channel: "stable"
     installPlanApproval: Manual
     name: gpu-operator-certified
     source: certified-operators
     sourceNamespace: openshift-marketplace
   EOF

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Procedure

1. Create the Namespace CR for the AMD GPU Operator Operator:

   oc apply -f - <<EOF
   apiVersion: v1
   kind: Namespace
   metadata:
     name: openshift-amd-gpu
     labels:
       name: openshift-amd-gpu
       openshift.io/cluster-monitoring: "true"
   EOF

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2. Verify that the Service CA Operator is operational. Run the following command:

   $ oc get pods -A | grep service-ca

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   Example output

   openshift-service-ca-operator   service-ca-operator-7cfd997ddf-llhdg    1/1    Running    7    35d
   openshift-service-ca            service-ca-8675b766d5-vz8gg             1/1    Running    6    35d

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3. Verify that the Machine Config Operator is operational:

   $ oc get pods -A | grep machine-config-daemon

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   Example output

   openshift-machine-config-operator   machine-config-daemon-sdsjj   2/2    Running    10   35d
   openshift-machine-config-operator   machine-config-daemon-xc6rm   2/2    Running    0    2d21h

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4. Verify that the Cluster Image Registry Operator is operational:

   $ oc get pods -n openshift-image-registry

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   Example output

   NAME                                               READY   STATUS      RESTARTS   AGE
   cluster-image-registry-operator-58f9dc9976-czt2w   1/1     Running     5          35d
   image-pruner-29259360-2tdrk                        0/1     Completed   0          2d8h
   image-pruner-29260800-v9lkc                        0/1     Completed   0          32h
   image-pruner-29262240-swcmb                        0/1     Completed   0          8h
   image-registry-7b67584cd-sdxpk                     1/1     Running     10         35d
   node-ca-d2kzl                                      1/1     Running     0          2d21h
   node-ca-xxzrw                                      1/1     Running     5          35d

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5. Optional: If you plan to build driver images in the cluster, you must enable the OpenShift internal registry. Run the following commands:

   1. Verify current registry status:

      $ oc get pods -n openshift-image-registry

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      NAME                                               READY   STATUS      RESTARTS   AGE
      #...
      image-registry-7b67584cd-sdxpk                     1/1     Running     10         36d

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   2. Configure the registry storage. The following example patches an emptyDir ephemeral volume in the cluster. Run the following command:

      $ oc patch configs.imageregistry.operator.openshift.io cluster --type merge \
        --patch '{"spec":{"storage":{"emptyDir":{}}}}'

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   3. Enable the registry:

      $ oc patch configs.imageregistry.operator.openshift.io cluster --type merge \
        --patch '{"spec":{"managementState":"Managed"}}'

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6. Install the Node Feature Discovery (NFD) Operator. See Installing the Node Feature Discovery Operator.
7. Install the Kernel Module Management (KMM) Operator. See Installing the Kernel Module Management Operator.

8. Configure node feature discovery for the AMD AI accelerator:

   1. Create a NodeFeatureDiscovery (NFD) custom resource (CR) to detect AMD GPU hardware. For example:

      apiVersion: nfd.openshift.io/v1
      kind: NodeFeatureDiscovery
      metadata:
        name: amd-gpu-operator-nfd-instance
        namespace: openshift-nfd
      spec:
        workerConfig:
          configData: |
            core:
              sleepInterval: 60s
            sources:
              pci:
                deviceClassWhitelist:
                  - "0200"
                  - "03"
                  - "12"
                deviceLabelFields:
                  - "vendor"
                  - "device"
              custom:
              - name: amd-gpu
                labels:
                  feature.node.kubernetes.io/amd-gpu: "true"
                matchAny:
                  - matchFeatures:
                      - feature: pci.device
                        matchExpressions:
                          vendor: {op: In, value: ["1002"]}
                          device: {op: In, value: [
                            "740f", # MI210
                          ]}
              - name: amd-vgpu
                labels:
                  feature.node.kubernetes.io/amd-vgpu: "true"
                matchAny:
                  - matchFeatures:
                      - feature: pci.device
                        matchExpressions:
                          vendor: {op: In, value: ["1002"]}
                          device: {op: In, value: [
                            "74b5", # MI300X VF
                          ]}

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      Note

      Depending on your specific cluster deployment, you might require a NodeFeatureDiscovery or NodeFeatureRule CR. For example, the cluster might already have the NodeFeatureDiscovery resource deployed and you don’t want to change it. For more information, see Create Node Feature Discovery Rule.

9. Create a MachineConfig CR to add the out-of-tree amdgpu kernel module to the modprobe blacklist. For example:

   apiVersion: machineconfiguration.openshift.io/v1
   kind: MachineConfig
   metadata:
     labels:
       machineconfiguration.openshift.io/role: worker
     name: amdgpu-module-blacklist
   spec:
     config:
       ignition:
         version: 3.2.0
       storage:
         files:
           - path: "/etc/modprobe.d/amdgpu-blacklist.conf"
             mode: 420
             overwrite: true
             contents:
               source: "data:text/plain;base64,YmxhY2tsaXN0IGFtZGdwdQo="

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   Where:

   machineconfiguration.openshift.io/role: worker

   Specifies the node role for the machine configuration. Set this value to master for single-node OpenShift clusters.

   Important

   The Machine Config Operator automatically reboots selected nodes after you apply the MachineConfig CR.

10. Create the DeviceConfig CR to start the AMD AI accelerator driver installation. For example:

    apiVersion: amd.com/v1alpha1
    kind: DeviceConfig
    metadata:
      name: driver-cr
      namespace: openshift-amd-gpu
    spec:
      driver:
        enable: true
        image: image-registry.openshift-image-registry.svc:5000/$MOD_NAMESPACE/amdgpu_kmod
        version: 6.2.2
      selector:
        "feature.node.kubernetes.io/amd-gpu": "true"

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    Where:

    image: image-registry.openshift-image-registry.svc:5000/$MOD_NAMESPACE/amdgpu_kmod

    Specifies the driver image location. By default, you do not need to configure a value for this field because the default value is used.

    After you apply the DeviceConfig CR, the AMD GPU Operator collects the worker node system specifications, builds or retrieve the appropriate driver image, uses KMM to deploy the driver, and finally deploys the ROCM device plugin and node labeller.

Verification

1. Verify that the KMM worker pods are running:

   $ oc get pods -n openshift-kmm

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   Example output

   NAME                                       READY   STATUS    RESTARTS         AGE
   kmm-operator-controller-774c7ccff6-hr76v   1/1     Running   30 (2d23h ago)   35d
   kmm-operator-webhook-76d7b9555-ltmps       1/1     Running   5                35d

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2. Check device plugin and labeller status:

   $ oc -n openshift-amd-gpu get pods

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   Example output

   NAME                                                   READY   STATUS    RESTARTS        AGE
   amd-gpu-operator-controller-manager-59dd964777-zw4bg   1/1     Running   8 (2d23h ago)   9d
   test-deviceconfig-device-plugin-kbrp7                  1/1     Running   0               2d
   test-deviceconfig-metrics-exporter-k5v4x               1/1     Running   0               2d
   test-deviceconfig-node-labeller-fqz7x                  1/1     Running   0               2d

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3. Confirm that GPU resource labels are applied to the nodes:

   $ oc get node -o json | grep amd.com

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   Example output

   "amd.com/gpu.cu-count": "304",
   "amd.com/gpu.device-id": "74b5",
   "amd.com/gpu.driver-version": "6.12.12",
   "amd.com/gpu.family": "AI",
   "amd.com/gpu.simd-count": "1216",
   "amd.com/gpu.vram": "191G",
   "beta.amd.com/gpu.cu-count": "304",
   "beta.amd.com/gpu.cu-count.304": "8",
   "beta.amd.com/gpu.device-id": "74b5",
   "beta.amd.com/gpu.device-id.74b5": "8",
   "beta.amd.com/gpu.family": "AI",
   "beta.amd.com/gpu.family.AI": "8",
   "beta.amd.com/gpu.simd-count": "1216",
   "beta.amd.com/gpu.simd-count.1216": "8",
   "beta.amd.com/gpu.vram": "191G",
   "beta.amd.com/gpu.vram.191G": "8",
   "amd.com/gpu": "8",
   "amd.com/gpu": "8",

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Procedure

1. Create the Secret custom resource (CR) for the Hugging Face token. The cluster uses the Secret CR to pull models from Hugging Face.

   1. Set the HF_TOKEN variable using the token you set in Hugging Face.

      $ HF_TOKEN=<your_huggingface_token>

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   2. Set the cluster namespace to match where you deployed the Red Hat AI Inference Server image, for example:

      $ NAMESPACE=rhaiis-namespace

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   3. Create the Secret CR in the cluster:

      $ oc create secret generic hf-secret --from-literal=HF_TOKEN=$HF_TOKEN -n $NAMESPACE

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2. Create the Docker secret so that the cluster can download the Red Hat AI Inference Server image from the container registry. For example, to create a Secret CR that contains the contents of your local ~/.docker/config.json file, run the following command:

   oc create secret generic docker-secret --from-file=.dockercfg=$HOME/.docker/config.json --type=kubernetes.io/dockercfg -n rhaiis-namespace

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3. Create a PersistentVolumeClaim (PVC) custom resource (CR) and apply it in the cluster. The following example PVC CR uses a default IBM VPC Block persistence volume. You use the PVC as the location where you store the models that you download.

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: model-cache
     namespace: rhaiis-namespace
   spec:
     accessModes:
       - ReadWriteOnce
     resources:
       requests:
         storage: 20Gi
     storageClassName: ibmc-vpc-block-10iops-tier

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   Note

   Configuring cluster storage to meet your requirements is outside the scope of this procedure. For more detailed information, see Configuring persistent storage.

4. Create a Deployment custom resource (CR) that pulls the model from Hugging Face and deploys the Red Hat AI Inference Server container. Reference the following example Deployment CR, which uses AI Inference Server to serve a Granite model on a CUDA accelerator.

   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: granite
     namespace: rhaiis-namespace
     labels:
       app: granite
   spec:
     replicas: 1
     selector:
       matchLabels:
         app: granite
     template:
       metadata:
         labels:
           app: granite
       spec:
         imagePullSecrets:
           - name: docker-secret
         volumes:
           - name: model-volume
             persistentVolumeClaim:
               claimName: model-cache
           - name: shm
             emptyDir:
               medium: Memory
               sizeLimit: "2Gi"
           - name: oci-auth
             secret:
               secretName: docker-secret
               items:
                 - key: .dockercfg
                   path: config.json
         serviceAccountName: default
         initContainers:
           - name: fetch-model
             image: ghcr.io/oras-project/oras:v1.2.0
             env:
               - name: DOCKER_CONFIG
                 value: /auth
             command: ["/bin/sh","-c"]
             args:
               - |
                 set -e
                 # Only pull if /model is empty
                 if [ -z "$(ls -A /model)" ]; then
                   echo "Pulling model..."
                   oras pull registry.redhat.io/rhelai1/granite-3-1-8b-instruct-quantized-w8a8:1.5 \
                     --output /model \
                 else
                   echo "Model already present, skipping model pull"
                 fi
             volumeMounts:
               - name: model-volume
                 mountPath: /model
               - name: oci-auth
                 mountPath: /auth
                 readOnly: true
         containers:
           - name: granite
             image: 'registry.redhat.io/rhaiis/vllm-cuda-rhel9@sha256:a6645a8e8d7928dce59542c362caf11eca94bb1b427390e78f0f8a87912041cd'
             imagePullPolicy: IfNotPresent
             env:
               - name: VLLM_SERVER_DEV_MODE
                 value: '1'
             command:
               - python
               - '-m'
               - vllm.entrypoints.openai.api_server
             args:
               - '--port=8000'
               - '--model=/model'
               - '--served-model-name=granite-3-1-8b-instruct-quantized-w8a8'
               - '--tensor-parallel-size=1'
             resources:
               limits:
                 cpu: '10'
                 nvidia.com/gpu: '1'
                 memory: 16Gi
               requests:
                 cpu: '2'
                 memory: 6Gi
                 nvidia.com/gpu: '1'
             volumeMounts:
               - name: model-volume
                 mountPath: /model
               - name: shm
                 mountPath: /dev/shm
         restartPolicy: Always

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   +

   Where:

   namespace: rhaiis-namespace

   Specifies the deployment namespace. The value of metadata.namespace must match the namespace where you configured the Hugging Face Secret CR.

   claimName: model-cache

   Specifies the persistent volume claim name. The value of spec.template.spec.volumes.persistentVolumeClaim.claimName must match the name of the PVC that you created.

   initContainers:

   Defines a container that runs before the main application container to download the required model from Hugging Face. The model pull step is skipped if the model directory has already been populated, for example, from a previous deployment.

   mountPath: /dev/shm

   Mounts the shared memory volume required by the NVIDIA Collective Communications Library (NCCL). Tensor parallel vLLM deployments fail without this volume mount.

1. Increase the deployment replica count to the required number. For example, run the following command:

   oc scale deployment granite -n rhaiis-namespace --replicas=1

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2. Optional: Watch the deployment and ensure that it succeeds:

   $ oc get deployment -n rhaiis-namespace --watch

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   Example output

   NAME      READY   UP-TO-DATE   AVAILABLE   AGE
   granite   0/1     1            0           2s
   granite   1/1     1            1           14s

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1. Create a Service CR for the model inference. For example:

   apiVersion: v1
   kind: Service
   metadata:
     name: granite
     namespace: rhaiis-namespace
   spec:
     selector:
       app: granite
     ports:
       - protocol: TCP
         port: 80
         targetPort: 8000

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2. Optional: Create a Route CR to enable public access to the model. For example:

   apiVersion: route.openshift.io/v1
   kind: Route
   metadata:
     name: granite
     namespace: rhaiis-namespace
   spec:
     to:
       kind: Service
       name: granite
     port:
       targetPort: 80

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3. Get the URL for the exposed route. Run the following command:

   $ oc get route granite -n rhaiis-namespace -o jsonpath='{.spec.host}'

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   Example output

   granite-rhaiis-namespace.apps.example.com

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Procedure

1. Create the Secret custom resource (CR) for the Hugging Face token. The cluster uses the Secret CR to pull models from Hugging Face.

   1. Set the HF_TOKEN variable using the token you set in Hugging Face:

      $ HF_TOKEN=<your_huggingface_token>

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   2. Set the cluster namespace to match where you deployed the Red Hat AI Inference Server image, for example:

      $ NAMESPACE=rhaiis-namespace

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   3. Create the Secret CR in the cluster:

      $ oc create secret generic hf-secret --from-literal=HF_TOKEN=$HF_TOKEN -n $NAMESPACE

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2. Create the Docker secret so that the cluster can download the Red Hat AI Inference Server image from the container registry. For example, to create a Secret CR that contains the contents of your local ~/.docker/config.json file, run the following command:

   $ oc create secret generic docker-secret --from-file=.dockercfg=$HOME/.docker/config.json --type=kubernetes.io/dockercfg -n rhaiis-namespace

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3. Create a PersistentVolumeClaim (PVC) custom resource (CR) and apply it in the cluster. The following example PVC CR uses a default IBM VPC Block persistence volume. You use the PVC as the location where you store the models that you download.

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: model-cache
     namespace: rhaiis-namespace
   spec:
     accessModes:
       - ReadWriteOnce
     resources:
       requests:
         storage: 20Gi
     storageClassName: <STORAGE_CLASS_NAME>

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   Note

   Configuring cluster storage to meet your requirements is outside the scope of this procedure. For more detailed information, see Configuring persistent storage.

4. Create a Deployment custom resource (CR) that pulls the model from Hugging Face and deploys the Red Hat AI Inference Server container. Reference the following example Deployment CR, which uses AI Inference Server to serve a Granite model with IBM Spyre AI accelerators.

   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: granite-spyre
     namespace: rhaiis-namespace
     labels:
       app: granite-spyre
   spec:
     replicas: 1
     selector:
       matchLabels:
         app: granite-spyre
     template:
       metadata:
         labels:
           app: granite-spyre
       spec:
         serviceAccountName: default
         volumes:
           - name: model-volume
             persistentVolumeClaim:
               claimName: model-cache
           - name: shm
             emptyDir:
               medium: Memory
               sizeLimit: "2Gi"
         initContainers:
           - name: fetch-model
             image: registry.redhat.io/ubi9/python-311:latest
             env:
               - name: HF_TOKEN
                 valueFrom:
                   secretKeyRef:
                     name: hf-secret
                     key: HF_TOKEN
               - name: HF_HOME
                 value: /tmp/hf_home
               - name: HF_REPO_ID
                 value: "ibm-granite/granite-3.3-8b-instruct"
             command:
               - /bin/bash
               - -lc
             args:
               - |
                 set -euo pipefail
                 mkdir -p /tmp/model
                 if [ -z "$(ls -A /tmp/model 2>/dev/null)" ]; then
                   echo "Installing huggingface_hub..."
                   pip install --no-cache-dir -U huggingface_hub
   
                   echo "Downloading model from Hugging Face: ${HF_REPO_ID}"
                   echo "Using HF_HOME=${HF_HOME}"
   
                   python -c 'import os; from huggingface_hub import snapshot_download; snapshot_download(repo_id=os.environ["HF_REPO_ID"], local_dir="/tmp/model", local_dir_use_symlinks=False, token=os.environ.get("HF_TOKEN"), resume_download=True); print("Model download completed:", os.environ["HF_REPO_ID"])'
                 else
                   echo "Model already present in /tmp/model, skipping download."
                 fi
             volumeMounts:
               - name: model-volume
                 mountPath: /tmp/model
         containers:
           - name: vllm
             image: registry.redhat.io/rhaiis/vllm-spyre-rhel9:3.2.5-1765361213
             command:
               - /bin/bash
               - -lc
               - |
                 source /opt/rh/gcc-toolset-14/enable
                 source /etc/profile.d/ibm-aiu-setup.sh
                 exec python3 -m vllm.entrypoints.openai.api_server \
                   --model=/tmp/model \
                   --port=8000 \
                   --served-model-name=spyre-model \
                   --max-model-len=32768 \
                   --max-num-seqs=32 \
                   --tensor-parallel-size=4
             env:
               - name: HF_HOME
                 value: /tmp/hf_home
               - name: FLEX_DEVICE
                 value: VF
               - name: TOKENIZERS_PARALLELISM
                 value: "false"
               - name: DTLOG_LEVEL
                 value: error
               - name: TORCH_SENDNN_LOG
                 value: CRITICAL
               - name: VLLM_SPYRE_USE_CB
                 value: "1"
               - name: VLLM_SPYRE_REQUIRE_PRECOMPILED_DECODERS
                 value: "1"
               - name: TORCH_SENDNN_CACHE_ENABLE
                 value: "1"
             ports:
               - name: http
                 containerPort: 8000
             resources:
               requests:
                 cpu: "16"
                 memory: "160Gi"
                 ibm.com/spyre_vf: "4"
               limits:
                 cpu: "23"
                 memory: "200Gi"
                 ibm.com/spyre_vf: "4"
             volumeMounts:
               - name: model-volume
                 mountPath: /tmp/model
                 readOnly: true
               - name: shm
                 mountPath: /dev/shm

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   Where:

   namespace: rhaiis-namespace

   Specifies the deployment namespace. The value of metadata.namespace must match the namespace where you configured the Hugging Face Secret CR.

   claimName: model-cache

   Specifies the persistent volume claim name. The value of spec.template.spec.volumes.persistentVolumeClaim.claimName must match the name of the PVC that you created.

   initContainers

   Defines a container that runs before the main application container to download the required model from Hugging Face by using the huggingface_hub Python library. The model download step is skipped if the model directory has already been populated, for example, from a previous deployment.

   FLEX_DEVICE

   Specifies the device type for IBM Spyre accelerators. Set to VF for virtual function mode.

   TOKENIZERS_PARALLELISM

   Disables tokenizer parallelism to prevent resource conflicts.

   VLLM_SPYRE_USE_CB

   Enables continuous batching for improved throughput on IBM Spyre accelerators.

   VLLM_SPYRE_REQUIRE_PRECOMPILED_DECODERS

   Requires precompiled decoders for optimal performance on Spyre accelerators.

   TORCH_SENDNN_CACHE_ENABLE

   Enables caching for the SendNN backend to improve model loading times.

   ibm.com/spyre_vf

   Requests IBM Spyre virtual function devices from the cluster. The number specifies how many Spyre AI accelerator devices to allocate.

   mountPath: /dev/shm

   Mounts the shared memory volume required for tensor parallel inference across multiple Spyre accelerators.

5. Increase the deployment replica count to the required number.

   $ oc scale deployment granite-spyre -n rhaiis-namespace --replicas=1

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6. Optional: Watch the deployment and ensure that it succeeds, for example:

   $ oc get deployment -n rhaiis-namespace --watch

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   Example output:

   NAME            READY   UP-TO-DATE   AVAILABLE   AGE
   granite-spyre   0/1     1            0           2s
   granite-spyre   1/1     1            1           5m

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7. Create a Service CR for the model inference. For example:

   apiVersion: v1
   kind: Service
   metadata:
     name: granite-spyre
     namespace: rhaiis-namespace
     labels:
       app: granite-spyre
   spec:
     selector:
       app: granite-spyre
     ports:
       - name: http
         protocol: TCP
         port: 8000
         targetPort: 8000
     type: ClusterIP

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   Note

   spec.selector.app must match the label in your Deployment pod.

8. Optional: Create a Route CR to enable public access to the model with TLS encryption. For example:

   apiVersion: route.openshift.io/v1
   kind: Route
   metadata:
     name: granite-spyre
     namespace: rhaiis-namespace
     annotations:
       haproxy.router.openshift.io/timeout: 600s
   spec:
     to:
       kind: Service
       name: granite-spyre
     port:
       targetPort: http
     tls:
       termination: edge
       insecureEdgeTerminationPolicy: Redirect

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9. Get the URL for the exposed route. Run the following command:

   $ oc get route granite-spyre -n rhaiis-namespace -o jsonpath='{.spec.host}'

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   Example output:

   granite-spyre-rhaiis-namespace.apps.example.com

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