- 1 year ago
PyTorch Error checking compiler version for cl (cpp_extension.py)
If you encounter an error related to checking the compiler version for cl
when using PyTorch's cpp_extension.py
module, it usually indicates an issue with the Microsoft Visual C++ compiler installation or configuration. Here are some steps you can try to resolve the error:
Verify Visual C++ Installation: Ensure that you have a compatible version of Visual C++ installed on your system. For PyTorch, it generally requires Visual C++ 2015 or later versions. You can check the installed Visual C++ versions in the "Add or Remove Programs" section of the Control Panel.
Check PATH Environment Variable: Verify that the directory containing the
cl.exe
compiler executable is included in thePATH
environment variable. The Visual C++ compiler typically gets installed in a location likeC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64
or similar. Make sure this directory or a similar one is added to thePATH
environment variable.Install Visual Studio Build Tools: If Visual Studio or the required build tools are not installed, you may need to install them. The Visual Studio Build Tools package provides a lightweight installation of the necessary build components, including the compiler. Download and install the appropriate version of Visual Studio Build Tools from the Microsoft website.
Run Developer Command Prompt: Open the Developer Command Prompt for Visual Studio (or the appropriate version) from the Start menu. This command prompt sets up the necessary environment variables for the Visual C++ compiler. Execute your Python script or command from this command prompt to ensure the correct environment is set up.
Reinstall PyTorch and Extensions: If the issue persists, you can try reinstalling PyTorch and any related extensions. Use
pip uninstall
to remove the existing installations, and then reinstall PyTorch and the required dependencies from scratch.PyTorch-specific Troubleshooting: Consult the PyTorch documentation or community resources for any PyTorch-specific troubleshooting steps related to compiler version checks or build issues.
By following these steps, you can address the error related to checking the compiler version for cl
when using PyTorch's cpp_extension.py
.