Chapter 7. Enabling accelerators 7.1. Enabling NVIDIA GPUs Before you can use NVIDIA GPUs in OpenShift AI, you must install the NVIDIA GPU Operator. Important The NVIDIA GPU add-on is no longer supported. Instead, enable GPUs by installing the NVIDIA GPU Operator. If your deployment has a previously-installed NVIDIA GPU add-on, before you install the NVIDIA GPU Operator, use Red Hat OpenShift Cluster Manager to uninstall the NVIDIA GPU add-on from your cluster. Prerequisites You have logged in to your OpenShift cluster. You have the cluster-admin role in your OpenShift cluster. You have installed an NVIDIA GPU and confirmed that it is detected in your environment. Procedure To enable GPU support on an OpenShift cluster, follow the instructions here: NVIDIA GPU Operator on Red Hat OpenShift Container Platform in the NVIDIA documentation. Important After you install the Node Feature Discovery (NFD) Operator, you must create an instance of NodeFeatureDiscovery. In addition, after you install the NVIDIA GPU Operator, you must create a ClusterPolicy and populate it with default values. Delete the migration-gpu-status ConfigMap. In the OpenShift web console, switch to the Administrator perspective. Set the Project to All Projects or redhat-ods-applications to ensure you can see the appropriate ConfigMap. Search for the migration-gpu-status ConfigMap. Click the action menu (...) and select Delete ConfigMap from the list. The Delete ConfigMap dialog appears. Inspect the dialog and confirm that you are deleting the correct ConfigMap. Click Delete . Restart the dashboard replicaset. In the OpenShift web console, switch to the Administrator perspective. Click Workloads Deployments . Set the Project to All Projects or redhat-ods-applications to ensure you can see the appropriate deployment. Search for the rhods-dashboard deployment. Click the action menu (...) and select Restart Rollout from the list. Wait until the Status column indicates that all pods in the rollout have fully restarted. Verification The reset migration-gpu-status instance is present on the Instances tab on the AcceleratorProfile custom resource definition (CRD) details page. From the Administrator perspective, go to the Operators Installed Operators page. Confirm that the following Operators appear: NVIDIA GPU Node Feature Discovery (NFD) Kernel Module Management (KMM) The GPU is correctly detected a few minutes after full installation of the Node Feature Discovery (NFD) and NVIDIA GPU Operators. The OpenShift command line interface (CLI) displays the appropriate output for the GPU worker node. For example: Note In OpenShift AI, Red Hat supports the use of accelerators within the same cluster only. Red Hat does not support remote direct memory access (RDMA) between accelerators, or the use of accelerators across a network, for example, by using technology such as NVIDIA GPUDirect or NVLink. After installing the NVIDIA GPU Operator, create an accelerator profile as described in Working with accelerator profiles . 7.2. Intel Gaudi AI Accelerator integration To accelerate your high-performance deep learning models, you can integrate Intel Gaudi AI accelerators into OpenShift AI. This integration enables your data scientists to use Gaudi libraries and software associated with Intel Gaudi AI accelerators through custom-configured workbench instances. Intel Gaudi AI accelerators offer optimized performance for deep learning workloads, with the latest Gaudi 3 devices providing significant improvements in training speed and energy efficiency. These accelerators are suitable for enterprises running machine learning and AI applications on OpenShift AI. Before you can enable Intel Gaudi AI accelerators in OpenShift AI, you must complete the following steps: Install the latest version of the Intel Gaudi AI Accelerator Operator from OperatorHub. Create and configure a custom workbench image for Intel Gaudi AI accelerators. A prebuilt workbench image for Gaudi accelerators is not included in OpenShift AI. Manually define and configure an accelerator profile for each Intel Gaudi AI device in your environment. OpenShift AI supports Intel Gaudi devices up to Intel Gaudi 3. The Intel Gaudi 3 accelerators, in particular, offer the following benefits: Improved training throughput: Reduce the time required to train large models by using advanced tensor processing cores and increased memory bandwidth. Energy efficiency: Lower power consumption while maintaining high performance, reducing operational costs for large-scale deployments. Scalable architecture: Scale across multiple nodes for distributed training configurations. Your OpenShift platform must support EC2 DL1 instances to use Intel Gaudi AI accelerators in an Amazon EC2 DL1 instance. You can use Intel Gaudi AI accelerators in workbench instances or model serving after you enable the accelerators, create a custom workbench image, and configure the accelerator profile. To identify the Intel Gaudi AI accelerators present in your deployment, use the lspci utility. For more information, see lspci(8) - Linux man page . Important The presence of Intel Gaudi AI accelerators in your deployment, as indicated by the lspci utility, does not guarantee that the devices are ready to use. You must ensure that all installation and configuration steps are completed successfully. Additional resources lspci(8) - Linux man page Amazon EC2 DL1 Instances Intel Gaudi AI Operator OpenShift installation What version of the Kubernetes API is included with each OpenShift 4.x release? 7.2.1. Enabling Intel Gaudi AI accelerators Before you can use Intel Gaudi AI accelerators in OpenShift AI, you must install the required dependencies, deploy the Intel Gaudi AI Accelerator Operator, and configure the environment. Prerequisites You have logged in to OpenShift. You have the cluster-admin role in OpenShift. You have installed your Intel Gaudi accelerator and confirmed that it is detected in your environment. Your OpenShift environment supports EC2 DL1 instances if you are running on Amazon Web Services (AWS). You have installed the OpenShift command-line interface (CLI). Procedure Install the latest version of the Intel Gaudi AI Accelerator Operator, as described in Intel Gaudi AI Operator OpenShift installation . By default, OpenShift sets a per-pod PID limit of 4096. If your workload requires more processing power, such as when you use multiple Gaudi accelerators or when using vLLM with Ray, you must manually increase the per-pod PID limit to avoid Resource temporarily unavailable errors. These errors occur due to PID exhaustion. Red Hat recommends setting this limit to 32768, although values over 20000 are sufficient. Run the following command to label the node: Optional: To prevent workload distribution on the affected node, you can mark the node as unschedulable and then drain it in preparation for maintenance. For more information, see Understanding how to evacuate pods on nodes . Create a custom-kubelet-pidslimit.yaml KubeletConfig resource file: Populate the file with the following YAML code. Set the PodPidsLimit value to 32768: apiVersion: machineconfiguration.openshift.io/v1 kind: KubeletConfig metadata: name: custom-kubelet-pidslimit spec: kubeletConfig: PodPidsLimit: 32768 machineConfigPoolSelector: matchLabels: custom-kubelet: set-pod-pid-limit-kubelet Apply the configuration: This operation causes the node to reboot. For more information, see Understanding node rebooting . Optional: If you previously marked the node as unschedulable, you can allow scheduling again after the node reboots. Create a custom workbench image for Intel Gaudi AI accelerators, as described in Creating custom workbench images . After installing the Intel Gaudi AI Accelerator Operator, create an accelerator profile, as described in Working with accelerator profiles . Verification From the Administrator perspective, go to the Operators Installed Operators page. Confirm that the following Operators appear: Intel Gaudi AI Accelerator Node Feature Discovery (NFD) Kernel Module Management (KMM) 7.3. AMD GPU Integration You can use AMD GPUs with OpenShift AI to accelerate AI and machine learning (ML) workloads. AMD GPUs provide high-performance compute capabilities, allowing users to process large data sets, train deep neural networks, and perform complex inference tasks more efficiently. Integrating AMD GPUs with OpenShift AI involves the following components: ROCm workbench images : Use the ROCm workbench images to streamline AI/ML workflows on AMD GPUs. These images include libraries and frameworks optimized with the AMD ROCm platform, enabling high-performance workloads for PyTorch and TensorFlow. The pre-configured images reduce setup time and provide an optimized environment for GPU-accelerated development and experimentation. AMD GPU Operator : The AMD GPU Operator simplifies GPU integration by automating driver installation, device plugin setup, and node labeling for GPU resource management. It ensures compatibility between OpenShift and AMD hardware while enabling scaling of GPU-enabled workloads. 7.3.1. Verifying AMD GPU availability on your cluster Before you proceed with the AMD GPU Operator installation process, you can verify the presence of an AMD GPU device on a node within your OpenShift cluster. You can use commands such as lspci or oc to confirm hardware and resource availability. Prerequisites You have administrative access to the OpenShift cluster. You have a running OpenShift cluster with a node equipped with an AMD GPU. You have access to the OpenShift CLI ( oc ) and terminal access to the node. Procedure Use the OpenShift CLI to verify if GPU resources are allocatable: List all nodes in the cluster to identify the node with an AMD GPU: Note the name of the node where you expect the AMD GPU to be present. Describe the node to check its resource allocation: In the output, locate the Capacity and Allocatable sections and confirm that amd.com/gpu is listed. For example: Check for the AMD GPU device using the lspci command: Log in to the node: Run the lspci command and search for the supported AMD device in your deployment. For example: Verify that the output includes one of the AMD GPU models. For example: Optional: Use the rocminfo command if the ROCm stack is installed on the node: Confirm that the ROCm tool outputs details about the AMD GPU, such as compute units, memory, and driver status. Verification The oc describe node <node_name> command lists amd.com/gpu under Capacity and Allocatable . The lspci command output identifies an AMD GPU as a PCI device matching one of the specified models (for example, MI210, MI250, MI300). Optional: The rocminfo tool provides detailed GPU information, confirming driver and hardware configuration. Additional resources AMD GPU Operator GitHub Repository 7.3.2. Enabling AMD GPUs Before you can use AMD GPUs in OpenShift AI, you must install the required dependencies, deploy the AMD GPU Operator, and configure the environment. Prerequisites You have logged in to OpenShift. You have the cluster-admin role in OpenShift. You have installed your AMD GPU and confirmed that it is detected in your environment. Your OpenShift environment supports EC2 DL1 instances if you are running on Amazon Web Services (AWS). Procedure Install the latest version of the AMD GPU Operator, as described in Install AMD GPU Operator on OpenShift . After installing the AMD GPU Operator, configure the AMD drivers required by the Operator as described in the documentation: Configure AMD drivers for the GPU Operator . Note Alternatively, you can install the AMD GPU Operator from the Red Hat Catalog. For more information, see Install AMD GPU Operator from Red Hat Catalog . After installing the AMD GPU Operator, create an accelerator profile, as described in Working with accelerator profiles . Verification From the Administrator perspective, go to the Operators Installed Operators page. Confirm that the following Operators appear: AMD GPU Operator Node Feature Discovery (NFD) Kernel Module Management (KMM) Note Ensure that you follow all the steps for proper driver installation and configuration. Incorrect installation or configuration may prevent the AMD GPUs from being recognized or functioning properly.

Commands:
Expected output when the GPU is detected properly describe node <node name> Capacity: cpu: 4 ephemeral-storage: 313981932Ki hugepages-1Gi: 0 hugepages-2Mi: 0 memory: 16076568Ki nvidia.com/gpu: 1 pods: 250 Allocatable: cpu: 3920m ephemeral-storage: 288292006229 hugepages-1Gi: 0 hugepages-2Mi: 0 memory: 12828440Ki nvidia.com/gpu: 1 pods: 250
label node <node_name> custom-kubelet=set-pod-pid-limit-kubelet
create -f custom-kubelet-pidslimit.yaml
apiVersion: machineconfiguration.openshift.io/v1 kind: KubeletConfig metadata: name: custom-kubelet-pidslimit spec: kubeletConfig: PodPidsLimit: 32768 machineConfigPoolSelector: matchLabels: custom-kubelet: set-pod-pid-limit-kubelet
apply -f custom-kubelet-pidslimit.yaml
get nodes
describe node <node_name>
Capacity: amd.com/gpu: 1 Allocatable: amd.com/gpu: 1
debug node/<node_name> chroot /host
lspci | grep -E "MI210|MI250|MI300"
03:00.0 Display controller: Advanced Micro Devices, Inc. [AMD] Instinct MI210
rocminfo