CUDA object file
File type: Source code and script file
A cuo file is a CUDA object file produced for use with the CUDA Toolkit.
It is a compiled build file rather than a human-readable CUDA source file.
File type category:
Source code and script file
Date updated: October 6, 2026
The cuo file extension is associated with the CUDA Toolkit from NVIDIA, a programming and development toolkit available for Microsoft Windows, macOS (OS X) and Linux.
A cuo file contains compiled CUDA object code used during the build process. The CUDA Toolkit uses this object file as an intermediate input when creating a library or executable.
The file is normally generated and consumed by the CUDA compilation tools. It is not generally intended for independent use, and its contents may not be meaningful as text.
Use the NVIDIA CUDA Toolkit compilation and build tools to use a cuo file. The file is normally handled automatically as part of a CUDA project build rather than opened in a standalone application.
On Microsoft Windows, use the CUDA Toolkit installed for the project. A text editor will not display the compiled object code in a useful form.
A cuo file is a compiled build artifact and does not have a useful general-purpose conversion. To produce a different object, library, or executable format, rebuild the corresponding CUDA source with the CUDA Toolkit for the required target platform.
Software applications that can open cuo files:
Microsoft Windows
Software applications that can edit cuo files:
Microsoft Windows
Software capable of saving cuo files:
Microsoft Windows
Software apps that create cuo files:
Microsoft Windows
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