How to Deploy Project on Jetson Orin Nano Using Compiled .so Files

Issue Overview

Users are encountering challenges while deploying projects on the Nvidia Jetson Orin Nano using compiled .so files. The primary symptoms include uncertainty about the deployment process, particularly regarding the deletion of original source code and the correct placement of compiled files in the system image.

The issue arises during the deployment phase, specifically when users attempt to create a system image that includes their compiled .so files and other necessary dependencies. Users have reported concerns about whether their approach is correct and if there are any specific considerations or best practices they should follow.

The relevant hardware is the Nvidia Jetson Orin Nano, and users are typically utilizing the SDK Manager tool for flashing images. The frequency of this issue appears to be consistent among users who are new to deploying applications on this platform. The impact of this problem can lead to confusion and potential errors in deployment, which may hinder project development and testing.

Possible Causes

• Configuration Errors: Users may not place the .so files in the correct directory within the root filesystem, leading to deployment failures.

• Software Bugs or Conflicts: There may be issues with the SDK Manager or other tools used for flashing images, which could result in improper installations.

• User Errors: Misunderstandings about the deployment process or incorrect deletion of source files can cause complications.

• Driver Issues: Outdated or incompatible drivers might affect how compiled files are recognized by the system.

• Environmental Factors: Insufficient power supply or overheating could lead to unexpected behavior during deployment.

Troubleshooting Steps, Solutions & Fixes

1. Verify Compilation:

   • Ensure that your code compiles correctly into a .so file without errors.
   • Use the following command to check if your .so file is generated:

     ls -l /path/to/your/compiled/file.so
     

2. Correct Placement of .so Files:

   • Copy your compiled .so file to the appropriate directory within the root filesystem on your host PC:

     cp /path/to/your/file.so Linux_for_Tegra/rootfs/
     

3. Creating a System Image:

   • After placing your .so file in the correct directory, proceed to create a system image that includes all necessary dependencies.
   • Follow these steps:
     • Navigate to your SDK Manager and select "Create Image".
     • Ensure that all required files are included in the image.

4. Flashing Images:

   • Use the SDK Manager for flashing images, but if you need to flash multiple images simultaneously, consider looking into bulk flashing options.
   • Refer to README files or community posts for guidance on mass flashing techniques.

5. Check Documentation:

   • Always refer to official documentation for version 35.3.1 and specific instructions on mass flashing into Orin Nano boards.

6. Testing After Flashing:

   • After flashing, run a test application that utilizes your .so file to ensure it functions as expected.
   • Use terminal commands to check if your application recognizes the .so file:

     ldd /path/to/your/application
     

7. Best Practices:

   • Keep backups of your original source code before deletion.
   • Document each step taken during deployment for future reference.
   • Regularly update your SDK Manager and related tools to avoid compatibility issues.

8. Further Investigation:

   • If issues persist after following these steps, consider seeking additional support from community forums or Nvidia’s official support channels.

By adhering to these guidelines and troubleshooting steps, users can effectively deploy their projects on the Nvidia Jetson Orin Nano using compiled .so files while minimizing potential issues.