mirror of https://github.com/NVIDIA/nvidia-container-toolkit synced 2024-11-25 21:39:10 +00:00

History

Evan Lezar 893b3c1824 Fix incorrect ldconfig path Signed-off-by: Evan Lezar <elezar@nvidia.com>		2023-11-24 11:03:51 +01:00
..
cdi	Add --dev-root option to CDI spec generation	2023-11-20 21:29:35 +01:00
config	Switch to reflect package for config updates	2023-11-23 10:29:38 +01:00
hook	Fix incorrect ldconfig path	2023-11-24 11:03:51 +01:00
info	Define a basic logger interface	2023-06-12 10:46:10 +02:00
runtime	Add option to nvidia-ctk to enable CDI in docker	2023-11-23 10:15:58 +01:00
system	Use github.com/NVIDIA/go-nvlib imports	2023-11-15 21:38:26 +01:00
main.go	Add quiet mode to nvidia-ctk cli	2023-07-05 11:26:04 +02:00
README.md	Use tags.cncf.io for CDI imports	2023-11-01 12:40:51 +01:00

README.md

NVIDIA Container Toolkit CLI

The NVIDIA Container Toolkit CLI nvidia-ctk provides a number of utilities that are useful for working with the NVIDIA Container Toolkit.

Functionality

Configure runtimes

The runtime command of the nvidia-ctk CLI provides a set of utilities to related to the configuration and management of supported container engines.

For example, running the following command:

nvidia-ctk runtime configure --set-as-default

will ensure that the NVIDIA Container Runtime is added as the default runtime to the default container engine.

Configure the NVIDIA Container Toolkit

The config command of the nvidia-ctk CLI allows a user to display and manipulate the NVIDIA Container Toolkit configuration.

For example, running the following command:

nvidia-ctk config default

will display the default config for the detected platform.

Whereas

nvidia-ctk config

will display the effective NVIDIA Container Toolkit config using the configured config file, and running:

Individual config options can be set by specifying these are key-value pairs to the --set argument:

nvidia-ctk config --set nvidia-container-cli.no-cgroups=true

By default, all commands output to STDOUT, but specifying the --output flag writes the config to the specified file.

Generate CDI specifications

The Container Device Interface (CDI) provides a vendor-agnostic mechanism to make arbitrary devices accessible in containerized environments. To allow NVIDIA devices to be used in these environments, the NVIDIA Container Toolkit CLI includes functionality to generate a CDI specification for the available NVIDIA GPUs in a system.

In order to generate the CDI specification for the available devices, run the following command:\

nvidia-ctk cdi generate

The default is to print the specification to STDOUT and a filename can be specified using the --output flag.

The specification will contain a device entries as follows (where applicable):

An nvidia.com/gpu=gpu{INDEX} device for each non-MIG-enabled full GPU in the system
An nvidia.com/gpu=mig{GPU_INDEX}:{MIG_INDEX} device for each MIG-device in the system
A special device called nvidia.com/gpu=all which represents all available devices.

For example, to generate the CDI specification in the default location where CDI-enabled tools such as podman, containerd, cri-o, or the NVIDIA Container Runtime can be configured to load it, the following command can be run:

sudo nvidia-ctk cdi generate --output=/etc/cdi/nvidia.yaml

(Note that sudo is used to ensure the correct permissions to write to the /etc/cdi folder)

With the specification generated, a GPU can be requested by specifying the fully-qualified CDI device name. With podman as an exmaple:

podman run --rm -ti --device=nvidia.com/gpu=gpu0 ubuntu nvidia-smi -L