GPU passthrough can unlock superior performance for virtual machines by allowing direct access to a physical GPU, which enhances tasks like gaming, video rendering, and other GPU-intensive workloads. One challenge with GPU passthrough is that the host operating system, in this case, Proxmox, might load drivers for the GPUs intended to pass to your VMs, preventing those devices from being used by the virtual machines. The podcast will explain how to resolve this issue by blacklisting the drivers in Proxmox.
The podcast will also discuss how IOMMU groups, clusters of PCI devices that share the same isolation context, can create a challenge with GPU passthrough. For example, if you want to assign one GPU to a Windows VM and another to an Arch Linux VM, but the GPUs are in the same IOMMU group, Proxmox may treat them as inseparable, making it impossible to assign them to different VMs simultaneously. The podcast will explain several approaches to resolve IOMMU group issues, such as checking BIOS settings, adding kernel parameters for IOMMU, and physical slot reconfiguration
[ad_2]
source
