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jnc probe

Detects NVIDIA Jetson hardware on the current system and reports a detailed hardware profile. Use this command to verify that your Jetson device is recognized correctly before setting up workspaces, configuring system requirements, or troubleshooting platform-specific issues.

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Usage

jnc probe [OPTIONS]

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Options

OptionDefaultDescription
--jsontrueOutput results in JSON format

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Output

When Jetson hardware is detected, the command outputs a JSON object containing a JetsonProfile with the following fields:
FieldTypeDescriptionExample
archStringCPU architecture of the system"aarch64"
l4tString or nullLinux for Tegra (L4T) version. Queried from the nvidia-l4t-core dpkg package on JetPack 6+, or read from /etc/nv_tegra_release on older releases"36.4.0"
jetpackString or nullNVIDIA JetPack SDK version corresponding to the installed L4T release"6.1"
cudaString or nullCUDA driver version. Read from /proc/driver/nvidia/version, falling back to nvidia-smi if unavailable"12.2"
moduleString or nullJetson module name, read from /proc/device-tree/model"Jetson Orin Nano"
compute_capabilityString or nullCUDA compute capability of the GPU"8.7"
Fields shown as “String or null” will be null in the JSON output when the value cannot be determined (for example, when the corresponding file or package is not present).

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Supported Hardware

Currently supports the Jetson Orin Nano with JetPack 6 (L4T R36.x). Support for additional Jetson modules and JetPack versions is coming soon.

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Examples

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Jetson Orin Nano

jnc probe

{
  "arch": "aarch64",
  "l4t": "36.4.0",
  "jetpack": "6.1",
  "cuda": "12.2",
  "module": "Jetson Orin Nano",
  "compute_capability": "8.7"
}

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Non-Jetson System

On a system without Jetson hardware, the command returns a profile with null values for hardware-specific fields: 
jnc probe

{
  "arch": "x86_64",
  "l4t": null,
  "jetpack": null,
  "cuda": null,
  "module": null,
  "compute_capability": null
}

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Integration with System Requirements

You can use the L4T version reported by jnc probe to configure system requirements in your pixi.toml. This ensures that packages requiring a specific L4T release are resolved correctly: 
[system-requirements]
l4t = "36.4.0"
Run jnc probe first to confirm the L4T version on your device, then set the value in pixi.toml to match.