mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-25 21:39:10 +00:00
01b4381282
This allows someone to (for example) pass the following environment variables: NVIDIA_VISIBLE_DEVICES_0="0,1" NVIDIA_VISIBLE_DEVICES_1="2,3" NVIDIA_VISIBLE_DEVICES_WHATEVER="4,5" and have the nvidia-container-toolkit automatically merge these into: NVIDIA_VISIBLE_DEVICES="0,1,2,3,4,5" This is useful (for example) if the full list of devices comes from multiple, disparate sources. Note: This will override whatever the original value of NVIDIA_VISIBLE_DEVICES was (*excluding* its original value) if it also exists as an environment variable already. We exclude the original value to ensure that we have a way to override the default value of NVIDIA_VISIBLE_DEVICES set to "all" inside a container image. Signed-off-by: Kevin Klues <kklues@nvidia.com>
86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
package main
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import (
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"log"
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"os"
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"path"
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"github.com/BurntSushi/toml"
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)
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const (
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configPath = "/etc/nvidia-container-runtime/config.toml"
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driverPath = "/run/nvidia/driver"
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)
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var defaultPaths = [...]string{
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path.Join(driverPath, configPath),
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configPath,
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}
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// CLIConfig: options for nvidia-container-cli.
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type CLIConfig struct {
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Root *string `toml:"root"`
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Path *string `toml:"path"`
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Environment []string `toml:"environment"`
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Debug *string `toml:"debug"`
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Ldcache *string `toml:"ldcache"`
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LoadKmods bool `toml:"load-kmods"`
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NoPivot bool `toml:"no-pivot"`
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NoCgroups bool `toml:"no-cgroups"`
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User *string `toml:"user"`
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Ldconfig *string `toml:"ldconfig"`
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AlphaMergeVisibleDevicesEnvvars bool `toml:"alpha-merge-visible-devices-envvars"`
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}
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type HookConfig struct {
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DisableRequire bool `toml:"disable-require"`
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SwarmResource *string `toml:"swarm-resource"`
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NvidiaContainerCLI CLIConfig `toml:"nvidia-container-cli"`
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}
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func getDefaultHookConfig() (config HookConfig) {
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return HookConfig{
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DisableRequire: false,
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SwarmResource: nil,
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NvidiaContainerCLI: CLIConfig{
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Root: nil,
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Path: nil,
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Environment: []string{},
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Debug: nil,
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Ldcache: nil,
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LoadKmods: true,
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NoPivot: false,
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NoCgroups: false,
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User: nil,
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Ldconfig: nil,
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AlphaMergeVisibleDevicesEnvvars: false,
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},
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}
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}
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func getHookConfig() (config HookConfig) {
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var err error
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if len(*configflag) > 0 {
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config = getDefaultHookConfig()
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_, err = toml.DecodeFile(*configflag, &config)
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if err != nil {
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log.Panicln("couldn't open configuration file:", err)
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}
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} else {
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for _, p := range defaultPaths {
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config = getDefaultHookConfig()
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_, err = toml.DecodeFile(p, &config)
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if err == nil {
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break
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} else if !os.IsNotExist(err) {
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log.Panicln("couldn't open default configuration file:", err)
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}
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}
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}
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return config
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}
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