11.2.3. Configuring the Compute node for vGPU and deploying the overcloud

Procedure

1. Install Red Hat Enterprise Linux and the NVIDIA GRID driver on a temporary Compute node and launch the node. For more information about installing the NVIDIA GRID driver, see 「Building a custom GPU overcloud image」.

2. On the Compute node, locate the vGPU type of the physical GPU device that you want to enable. For libvirt, virtual GPUs are mediated devices, or mdev type devices. To discover the supported mdev devices, enter the following command:

   [root@overcloud-computegpu-0 ~]# ls /sys/class/mdev_bus/0000\:06\:00.0/mdev_supported_types/
   nvidia-11  nvidia-12  nvidia-13  nvidia-14  nvidia-15  nvidia-16  nvidia-17  nvidia-18  nvidia-19  nvidia-20  nvidia-21  nvidia-210  nvidia-22
   
   [root@overcloud-computegpu-0 ~]# cat /sys/class/mdev_bus/0000\:06\:00.0/mdev_supported_types/nvidia-18/description
   num_heads=4, frl_config=60, framebuffer=2048M, max_resolution=4096x2160, max_instance=4

3. Add the compute-gpu.yaml file to the network-environment.yaml file:

   resource_registry:
     OS::TripleO::Compute::Net::SoftwareConfig: /home/stack/templates/nic-configs/compute.yaml
     OS::TripleO::ComputeGpu::Net::SoftwareConfig: /home/stack/templates/nic-configs/compute-gpu.yaml
     OS::TripleO::Controller::Net::SoftwareConfig: /home/stack/templates/nic-configs/controller.yaml
     #OS::TripleO::AllNodes::Validation: OS::Heat::None

4. Add the following parameters to the node-info.yaml file to specify the number of GPU-enabled Compute nodes, and the flavor to use for the vGPU-designated Compute nodes:

   parameter_defaults:
     OvercloudControllerFlavor: control
     OvercloudComputeFlavor: compute
     OvercloudComputeGpuFlavor: compute-vgpu-nvidia
     ControllerCount: 1
     ComputeCount: 0
     ComputeGpuCount: 3 #set to the no of GPU nodes you have

5. Create a gpu.yaml file to specify the vGPU type of your GPU device:

   parameter_defaults:
     ComputeGpuExtraConfig:
       nova::compute::vgpu::enabled_vgpu_types:
         - nvidia-18

   注記

   Each physical GPU supports only one virtual GPU type. If you specify multiple vGPU types in this property, only the first type is used.

6. Deploy the overcloud, adding your new role and environment files to the stack along with your other environment files:

   (undercloud) $ openstack overcloud deploy --templates \
     -r /home/stack/templates/roles_data_gpu.yaml
     -e /home/stack/templates/node-info.yaml
     -e /home/stack/templates/network-environment.yaml
     -e [your environment files]
     -e /home/stack/templates/gpu.yaml