Import Error: libnvinfer.so.5

AI & Data Science Deep Learning (Training & Inference) TensorRT
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1

Description

I installed jetbot from ‘GitHub - NVIDIA-AI-IOT/jetbot: An educational AI robot based on NVIDIA Jetson Nano.’. When i use ‘from jetbot import ObjectDetector’ and ‘model = ObjectDetector(‘ssd_mobilenet_v2_coco.engine’)’ for object detection, a error occur.
:OSError: libnvinfer.so.5: cannot open shared object file: No such file or directory

Environment

TensorRT Version: 7.1.3.0
CUDA Version: 10.2
Operating System + Version: Ubuntu 18.04.5 LTS (GNU/Linux 4.9.201-tegra aarch64)
Python Version (if applicable): 3.6.9
TensorFlow Version (if applicable): 2.4.0+nv21.3
PyTorch Version (if applicable): 1.6.0
jetbot: 0.3.0

Steps To Reproduce

import jetbot
from jetbot import ObjectDetector
model = ObjectDetector(‘ssd_mobilenet_v2_coco.engine’)

  • Full traceback of errors encountered
    Python 3.6.9 (default, Jan 26 2021, 15:33:00)
    [GCC 8.4.0] on linux
    Type “help”, “copyright”, “credits” or “license” for more information.

import jetbot
2021-04-19 17:45:44.299976: I tensorflow/stream_executor/platform/default/dso_loader.cc:49] Successfully opened dynamic library libcudart.so.10.2
from jetbot import ObjectDetector
model = ObjectDetector(‘ssd_mobilenet_v2_coco.engine’)
Traceback (most recent call last):
File “”, line 1, in
File “/usr/local/lib/python3.6/dist-packages/jetbot-0.3.0-py3.6.egg/jetbot/object_detection.py”, line 26, in init
load_plugins()
File “/usr/local/lib/python3.6/dist-packages/jetbot-0.3.0-py3.6.egg/jetbot/ssd_tensorrt/ssd_tensorrt.py”, line 57, in load_plugins
ctypes.CDLL(library_path)
File “/usr/lib/python3.6/ctypes/init.py”, line 348, in init
self._handle = _dlopen(self._name, mode)
OSError: libnvinfer.so.5: cannot open shared object file: No such file or directory
Please somebody help me

3

Hi @Ant_IN_Cloud,

Looks like you’ve not installed all dependencies required. We request you to please make sure all dependencies installed correctly. For your reference,

Thank you.

4

Thank you very much for your reply, this problem has been solved. That`s because the version error of jetbot, the correct version of jetbot is 0.4.3, we install the version is 0.3.0.

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