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l4t_version.py
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l4t_version.py
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#!/usr/bin/env python3
# finds the versions of JetPack-L4T and CUDA from the build environment:
#
# L4T_VERSION (packaging.version.Version)
# JETPACK_VERSION (packaging.version.Version)
# PYTHON_VERSION (packaging.version.Version)
# CUDA_VERSION (packaging.version.Version)
# CUDA_ARCHITECTURES (list[int]) -- e.g. [53, 62, 72, 87]
# SYSTEM_ARCH (str) -- e.g. 'aarch64' or 'x86_64'
# LSB_RELEASE (str) -- e.g. '18.04' or '20.04'
# LSB_CODENAME (str) -- e.g. 'bionic' or 'focal'
#
import os
import re
import sys
import json
import platform
import subprocess
import glob
from packaging.version import Version
def get_l4t_version(version_file='/etc/nv_tegra_release'):
"""
Returns the L4T_VERSION in a packaging.version.Version object
Which can be compared against other version objects: https://packaging.pypa.io/en/latest/version.html
You can also access the version components directly. For example, on L4T R35.3.1:
version.major == 35
version.minor == 3
version.micro == 1
The L4T_VERSION will either be parsed from /etc/nv_tegra_release or the $L4T_VERSION environment variable.
"""
if platform.machine() != 'aarch64':
raise ValueError(f"L4T_VERSION isn't supported on {ARCH} architecture (aarch64 only)")
if 'L4T_VERSION' in os.environ and len(os.environ['L4T_VERSION']) > 0:
return Version(os.environ['L4T_VERSION'].lower().lstrip('r'))
if not os.path.isfile(version_file):
raise IOError(f"L4T_VERSION file doesn't exist: {version_file}")
with open(version_file) as file:
line = file.readline()
# R32 (release), REVISION: 7.1, GCID: 29689809, BOARD: t186ref, EABI: aarch64, DATE: Wed Feb 2 21:33:23 UTC 2022
# R34 (release), REVISION: 1.1, GCID: 30414990, BOARD: t186ref, EABI: aarch64, DATE: Tue May 17 04:20:55 UTC 2022
# R35 (release), REVISION: 2.1, GCID: 32398013, BOARD: t186ref, EABI: aarch64, DATE: Sun Jan 22 03:18:23 UTC 2023
# R35 (release), REVISION: 3.1, GCID: 32790763, BOARD: t186ref, EABI: aarch64, DATE: Wed Mar 15 07:54:12 UTC 2023
parts = [part.strip() for part in line.split(',')]
# parse the release
l4t_release = parts[0]
l4t_release_prefix = '# R'
l4t_release_suffix = ' (release)'
if not l4t_release.startswith(l4t_release_prefix) or not l4t_release.endswith(l4t_release_suffix):
raise ValueError(f"L4T release string is invalid or in unexpected format: '{l4t_release}'")
l4t_release = l4t_release[len(l4t_release_prefix):-len(l4t_release_suffix)]
# parse the revision
l4t_revision = parts[1]
l4t_revision_prefix = 'REVISION: '
if not l4t_revision.startswith(l4t_revision_prefix):
raise ValueError(f"L4T revision '{l4t_revision}' doesn't start with expected prefix '{l4t_revision_prefix}'")
l4t_revision = l4t_revision[len(l4t_revision_prefix):]
# return packaging.version object
return Version(f'{l4t_release}.{l4t_revision}')
def get_jetpack_version(l4t_version=get_l4t_version(), default='5.1'):
"""
Returns the version of JetPack (based on the L4T version)
https://github.com/rbonghi/jetson_stats/blob/master/jtop/core/jetson_variables.py
"""
if not isinstance(l4t_version, Version):
l4t_version = Version(l4t_version)
NVIDIA_JETPACK = {
# -------- JP6 --------
"36.2.0": "6.0 DP",
"36.0.0": "6.0 EA",
# -------- JP5 --------
"35.4.1": "5.1.2",
"35.3.1": "5.1.1",
"35.3.0": "5.1.1 PRE",
"35.2.1": "5.1",
"35.1.0": "5.0.2 GA",
"34.1.1": "5.0.1 DP",
"34.1.0": "5.0 DP",
"34.0.1": "5.0 PRE-DP",
# -------- JP4 --------
"32.7.4": "4.6.4",
"32.7.3": "4.6.3",
"32.7.2": "4.6.2",
"32.7.1": "4.6.1",
"32.6.1": "4.6",
"32.5.2": "4.5.1",
"32.5.1": "4.5.1",
"32.5.0": "4.5",
"32.5": "4.5",
"32.4.4": "4.4.1",
"32.4.3": "4.4",
"32.4.2": "4.4 DP",
"32.3.1": "4.3",
"32.2.3": "4.2.3",
"32.2.1": "4.2.2",
"32.2.0": "4.2.1",
"32.2": "4.2.1",
"32.1.0": "4.2",
"32.1": "4.2",
"31.1.0": "4.1.1",
"31.1": "4.1.1",
"31.0.2": "4.1",
"31.0.1": "4.0",
# -------- Old JP --------
"28.4.0": "3.3.3",
"28.2.1": "3.3 | 3.2.1",
"28.2.0": "3.2",
"28.2": "3.2",
"28.1.0": "3.1",
"28.1": "3.1",
"27.1.0": "3.0",
"27.1": "3.0",
"24.2.1": "3.0 | 2.3.1",
"24.2.0": "2.3",
"24.2": "2.3",
"24.1.0": "2.2.1 | 2.2",
"24.1": "2.2.1 | 2.2",
"23.2.0": "2.1",
"23.2": "2.1",
"23.1.0": "2.0",
"23.1": "2.0",
"21.5.0": "2.3.1 | 2.3",
"21.5": "2.3.1 | 2.3",
"21.4.0": "2.2 | 2.1 | 2.0 | 1.2 DP",
"21.4": "2.2 | 2.1 | 2.0 | 1.2 DP",
"21.3.0": "1.1 DP",
"21.3": "1.1 DP",
"21.2.0": "1.0 DP",
"21.2": "1.0 DP",
}
for key in NVIDIA_JETPACK:
if Version(key) == l4t_version:
return Version(NVIDIA_JETPACK[key].split(' ')[0])
if not default:
raise RuntimeError(f"invalid/unknown L4T_VERSION {l4t_version}")
else:
return Version(default)
def get_cuda_version(version_file='/usr/local/cuda/version.json'):
"""
Returns the installed version of the CUDA Toolkit in a packaging.version.Version object
The CUDA_VERSION will either be parsed from /usr/local/cuda/version.json or the $CUDA_VERSION environment variable.
"""
if 'CUDA_VERSION' in os.environ and len(os.environ['CUDA_VERSION']) > 0:
return Version(os.environ['CUDA_VERSION'])
if not os.path.isfile(version_file):
# In case only the CUDA runtime is installed
so_file_path = "/usr/local/cuda/targets/aarch64-linux/lib/libcudart.so.*.*.*"
files = glob.glob(so_file_path)
if files:
file_path = files[0] # Assuming there is only one matching file
version_match = re.search(r'libcudart\.so\.(\d+\.\d+\.\d+)', file_path)
if version_match:
version_number = version_match.group(1)
return version_number
else:
print("Unable to extract version number.")
else:
#raise IOError(f"L4T_VERSION file doesn't exist: {version_file}")
return "0.0.0"
with open(version_file) as file:
versions = json.load(file)
return Version(versions['cuda_nvcc']['version'])
def get_l4t_base(l4t_version=get_l4t_version()):
"""
Returns the l4t-base or l4t-jetpack container to use
"""
if l4t_version.major >= 36: # JetPack 6
return "ubuntu:22.04" #"nvcr.io/ea-linux4tegra/l4t-jetpack:r36.0.0"
elif l4t_version.major >= 34: # JetPack 5
if l4t_version >= Version('35.4.1'):
return "nvcr.io/nvidia/l4t-jetpack:r35.4.1"
else:
return f"nvcr.io/nvidia/l4t-jetpack:r{l4t_version}"
else:
if l4t_version >= Version('32.7.1'):
return "nvcr.io/nvidia/l4t-base:r32.7.1"
else:
return f"nvcr.io/nvidia/l4t-base:r{l4t_version}"
def l4t_version_from_tag(tag):
"""
Extract the L4T_VERSION from a container tag by searching it for patterns like 'r35.2.1' / ect.
Returns a packaging.version.Version object, or None if a valid L4T_VERSION couldn't be found in the tag.
"""
tag = tag.split(':')[-1]
tag = re.split('-|_', tag)
for t in tag:
if t[0] != 'r' and t[0] != 'R':
continue
try:
return Version(t[1:])
except:
continue
return None
def l4t_version_compatible(l4t_version, l4t_version_host=get_l4t_version(), **kwargs):
"""
Returns true if the host OS can run containers built for the provided L4T version.
"""
if not l4t_version:
return False
if not isinstance(l4t_version, Version):
l4t_version = Version(l4t_version)
if l4t_version_host.major == 36: # JetPack 6 runs containers for JetPack 6
if l4t_version.major == 36:
return True
elif l4t_version_host.major == 35: # JetPack 5.1 can run other JetPack 5.1.x containers
if l4t_version.major == 35:
return True
elif l4t_version_host.major == 34: # JetPack 5.0 runs other JetPack 5.0.x containers
if l4t_version.major == 34:
return True
elif l4t_version_host >= Version('32.7'): # JetPack 4.6.1+ runs other JetPack 4.6.x containers
if l4t_version >= Version('32.7'):
return True
return l4t_version == l4t_version_host
def get_lsb_release():
"""
Returns a tuple of (LSB_RELEASE, LSB_CODENAME)
("18.04", "bionic")
("20.04", "focal")
"""
return (subprocess.run(["lsb_release", "-rs"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, check=True).stdout.strip(),
subprocess.run(["lsb_release", "-cs"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, check=True).stdout.strip())
# set L4T_VERSION and CUDA_VERSION globals
L4T_VERSION = get_l4t_version()
JETPACK_VERSION = get_jetpack_version()
CUDA_VERSION = get_cuda_version()
# Nano/TX1 = 5.3, TX2 = 6.2, Xavier = 7.2, Orin = 8.7
if L4T_VERSION.major >= 36: # JetPack 6
CUDA_ARCHITECTURES = [87]
elif L4T_VERSION.major >= 34: # JetPack 5
CUDA_ARCHITECTURES = [72, 87]
elif L4T_VERSION.major == 32: # JetPack 4
CUDA_ARCHITECTURES = [53, 62, 72]
# x86_64, aarch64
SYSTEM_ARCH = platform.machine()
# Python version (3.6, 3.8, ect)
PYTHON_VERSION = Version(f'{sys.version_info.major}.{sys.version_info.minor}')
# LSB release and codename ("20.04", "focal")
LSB_RELEASE, LSB_CODENAME = get_lsb_release()