1. For vGPU test you’ll need a license, which can be requested here:
   https://www.nvidia.com/object/nvidia-enterprise-account.html
2. Other documentation for installing vGPU on  Red Hat / CentOS is here:
   https://docs.nvidia.com/grid/latest/grid-vgpu-user-guide/index.html#red-hat-el-kvm-install-configure-vgpu
3. Virtual GPU Software Quick Start Guide
   https://linuxcluster.wordpress.com/2019/01/28/virtual-gpu-software-quick-start-guide/

In summary the steps are:
– Install a piece of sw in the host/hypervisor to help virtualize GPUs
– Install the GPU drivers inside the guest OS of the VMs
– Install a license server (flex) for the licensing
– Configure license server and settings within the VM to connect to the license server