mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-30 08:16:57 +00:00
74 lines
2.9 KiB
Markdown
74 lines
2.9 KiB
Markdown
# 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:
|
|
```bash
|
|
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:
|
|
```bash
|
|
nvidia-ctk config default
|
|
```
|
|
will display the default config for the detected platform.
|
|
|
|
Whereas
|
|
```bash
|
|
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:
|
|
|
|
```bash
|
|
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)](https://tags.cncf.io/container-device-interface) 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:\
|
|
```bash
|
|
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:
|
|
|
|
```bash
|
|
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:
|
|
```bash
|
|
podman run --rm -ti --device=nvidia.com/gpu=gpu0 ubuntu nvidia-smi -L
|
|
```
|