compute-runtime VS intel-graphics-compiler

Well... Fuck! https://github.com/intel/compute-runtime/issues/643

For what it's worth, I was able to get IOMMU enabled and iGPU passthrough working for Plex on an Ubuntu 22.04 LXC container with a fresh install of Proxmox 8.0.3 (kenrel 6.2.16-3-pve) on an Intel i5-13400, ASRock B760M Pro RS/D4, also using Intel drivers released early today. I largely followed this guide.

For this little project unless someone chimes in with experience or can point to regarding the RX 6600 XT / 6650 XT / perhaps 7600 I might go with https://github.com/intel/compute-runtime . (They don't have perfect documentation re supported gpus either, the readme table doesn't list DG2, you need to go to releases to see that) . Phoronix reported it as pretty stable when they tested it with kernel 6.2 in March.

Update: I was able to fix my issue. I'm using Ubuntu 22.04.2 LTS and have the newest available kernel, 6.3.1. Installing the drivers via apt does not work, instead I needed to use https://github.com/intel/compute-runtime/releases/

Drivers: https://github.com/intel/compute-runtime/releases

wget https://github.com/intel/compute-runtime/releases/download/22.43.24595.30/intel-level-zero-gpu-dbgsym_1.3.24595.30_amd64.ddeb

For OpenCL HDR/DV tone-mapping, install the extra compute-runtime if running on host.

wget https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.12504.5/intel-igc-core_1.0.12504.5_amd64.deb

(I am intel-igc maintainer, it's quite unfortunate, but there isn't much to do until https://github.com/intel/intel-graphics-compiler/issues/258 gets fixed).

Oops, I was looking at the wrong package. If you haven't seen it, this is the upstream issue: https://github.com/intel/intel-graphics-compiler/issues/258

Part of the Intel Graphics Compiler is open sourced here. IGC is a component of the driver which is used to compile shader code down to hardware specific ISA. There is a closed source half of it that is used on on the windows side, so in that way it is reused on both the open and closed source sides. I don't know if Mesa uses this, I'd kinda be surprised if it doesn't.

apt update && apt upgrade -y echo deb [signed-by=/usr/share/keyrings/plex.gpg] https://downloads.plex.tv/repo/deb public main | sudo tee /etc/apt/sources.list.d/plexmediaserver.list sudo wget -O- https://downloads.plex.tv/plex-keys/PlexSign.key | gpg --dearmor | sudo tee /usr/share/keyrings/plex.gpg mkdir ~/neo wget https://github.com/intel/compute-runtime/releases/download/21.49.21786/intel-gmmlib_21.3.3_amd64.deb -P ~/neo wget https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.9441/intel-igc-core_1.0.9441_amd64.deb -P ~/neo wget https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.9441/intel-igc-opencl_1.0.9441_amd64.deb -P ~/neo wget https://github.com/intel/compute-runtime/releases/download/21.49.21786/intel-opencl-icd_21.49.21786_amd64.deb -P ~/neo dpkg -i ~/neo/intel-gmmlib_21.3.3_amd64.deb dpkg -i ~/neo/intel-igc-core_1.0.9441_amd64.deb dpkg -i ~/neo/intel-igc-opencl_1.0.9441_amd64.deb dpkg -i ~/neo/intel-opencl-icd_21.49.21786_amd64.deb

PlexMediaServer install: Intel i915 Hardware: Found PlexMediaServer install: Nvidia GPU card: Not Found PlexMediaServer install: PlexMediaServer install: OpenCL: Installed PlexMediaServer install: Intel Gmmlib: Not Installed PlexMediaServer install: Intel IGC Core: Not Installed PlexMediaServer install: Intel IGC OpenCL: Not Installed PlexMediaServer install: Intel OpenCL: Not Installed PlexMediaServer install: PlexMediaServer install: WARNING: The Intel GMM library, required for Intel Compute Runtime support, is missing. PlexMediaServer install: Please install package: 'intel-gmmlib' from https://github.com/intel/compute-runtime/releases/download/21.49.21786/intel-gmmlib_21.3.3_amd64.deb PlexMediaServer install: PlexMediaServer install: WARNING: The Intel IGC Core, required for Intel Compute Runtime support, is missing. PlexMediaServer install: Please install package: 'intel-igc-core' from https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.9441/intel-igc-core_1.0.9441_amd64.deb PlexMediaServer install: PlexMediaServer install: WARNING: The Intel IGC OpenCL library, required for Intel Compute Runtime support, is missing. PlexMediaServer install: Please install package: 'intel-igc-opencl' from https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.9441/intel-igc-opencl_1.0.9441_amd64.deb PlexMediaServer install: PlexMediaServer install: WARNING: The Intel OpenCL library, required for Intel Compute Runtime support, is missing. PlexMediaServer install: Please install package: 'intel-opencl' from https://github.com/intel/compute-runtime/releases/download/21.49.21786/intel-opencl-icd_21.49.21786_amd64.deb PlexMediaServer install: Intel Compute Runtime packages are available from: https://github.com/intel/compute-runtime/releases PlexMediaServer install: Please be certain to install them in the listed order.

PlexMediaServer install: Pre-installation Validation. PlexMediaServer install: Pre-installation Validation complete. Unpacking plexmediaserver (1.26.2.5797-5bd057d2b) over (1.26.2.5797-5bd057d2b) ... Setting up plexmediaserver (1.26.2.5797-5bd057d2b) ... PlexMediaServer install: PlexMediaServer-1.26.2.5797-5bd057d2b - Installation starting. PlexMediaServer install: PlexMediaServer install: Now installing based on: PlexMediaServer install: Installation Type: Update PlexMediaServer install: Process Control: systemd PlexMediaServer install: Plex User: XXXXXX PlexMediaServer install: Plex Group: XXXXXX PlexMediaServer install: Video Group: video PlexMediaServer install: Metadata Dir: XXXXXXX PlexMediaServer install: Temp Directory: /mnt/ramdisk (set in Preferences.xml) PlexMediaServer install: Lang Encoding: en_US.UTF-8 PlexMediaServer install: Config file used: /etc/systemd/system/plexmediaserver.service.d/override.conf PlexMediaServer install: Intel i915 Hardware: Found PlexMediaServer install: Nvidia GPU card: Not Found PlexMediaServer install: PlexMediaServer install: OpenCL: Installed PlexMediaServer install: Intel Gmmlib: Not Installed PlexMediaServer install: Intel IGC Core: Not Installed PlexMediaServer install: Intel IGC OpenCL: Not Installed PlexMediaServer install: Intel OpenCL: Not Installed PlexMediaServer install: PlexMediaServer install: WARNING: The Intel GMM library, required for Intel Compute Runtime support, is missing. PlexMediaServer install: Please install package: 'intel-gmmlib' from https://github.com/intel/compute-runtime/releases/download/21.49.21786/intel-gmmlib_21.3.3_amd64.deb PlexMediaServer install: PlexMediaServer install: WARNING: The Intel IGC Core, required for Intel Compute Runtime support, is missing. PlexMediaServer install: Please install package: 'intel-igc-core' from https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.9441/intel-igc-core_1.0.9441_amd64.deb PlexMediaServer install: PlexMediaServer install: WARNING: The Intel IGC OpenCL library, required for Intel Compute Runtime support, is missing. PlexMediaServer install: Please install package: 'intel-igc-opencl' from https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.9441/intel-igc-opencl_1.0.9441_amd64.deb PlexMediaServer install: PlexMediaServer install: WARNING: The Intel OpenCL library, required for Intel Compute Runtime support, is missing. PlexMediaServer install: Please install package: 'intel-opencl' from https://github.com/intel/compute-runtime/releases/download/21.49.21786/intel-opencl-icd_21.49.21786_amd64.deb PlexMediaServer install: Intel Compute Runtime packages are available from: https://github.com/intel/compute-runtime/releases PlexMediaServer install: Please be certain to install them in the listed order. PlexMediaServer install: PlexMediaServer install: Completing final configuration. PlexMediaServer install: Starting Plex Media Server. PlexMediaServer install: PlexMediaServer-1.26.2.5797-5bd057d2b - Installation successful. Errors: 0, Warnings: 4

It's a bit tricky right now to figure out which registers store which variables, especially for pre-initialized registers. We're looking to improve this. The biggest complications are "implicit arguments" that need to be passed to the kernel but that aren't explicit arguments in your kernel signature. You can get a feel for the types of information that are passed to a kernel by looking at the Intel Graphics Compiler source.