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Merged
romildo merged 1 commit into from
May 10, 2020
Merged

nixos/nvidia : added nvidia-persistenced #77054

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23 changes: 23 additions & 0 deletions nixos/modules/hardware/video/nvidia.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -34,10 +34,12 @@ let
enabled = nvidia_x11 != null;

cfg = config.hardware.nvidia;

pCfg = cfg.prime;
syncCfg = pCfg.sync;
offloadCfg = pCfg.offload;
primeEnabled = syncCfg.enable || offloadCfg.enable;
nvidiaPersistencedEnabled = cfg.nvidiaPersistenced;
in

{
Expand Down Expand Up @@ -129,6 +131,15 @@ in
<option>hardware.nvidia.prime.intelBusId</option>).
'';
};

hardware.nvidia.nvidiaPersistenced = mkOption {
default = false;
type = types.bool;
description = ''
Update for NVIDA GPU headless mode, i.e. nvidia-persistenced. It ensures all
GPUs stay awake even during headless mode.
'';
};
};

config = mkIf enabled {
Expand Down Expand Up @@ -220,6 +231,18 @@ in
++ optional (nvidia_x11.persistenced != null && config.virtualisation.docker.enableNvidia)
"L+ /run/nvidia-docker/extras/bin/nvidia-persistenced - - - - ${nvidia_x11.persistenced}/origBin/nvidia-persistenced";

systemd.services."nvidia-persistenced" = mkIf nvidiaPersistencedEnabled {
description = "NVIDIA Persistence Daemon";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "forking";
Restart = "always";
PIDFile = "/var/run/nvidia-persistenced/nvidia-persistenced.pid";
ExecStart = "${nvidia_x11.persistenced}/bin/nvidia-persistenced --verbose";
ExecStopPost = "${pkgs.coreutils}/bin/rm -rf /var/run/nvidia-persistenced";
};
};

boot.extraModulePackages = [ nvidia_x11.bin ];

# nvidia-uvm is required by CUDA applications.
Expand Down