I’m encountering an error while a PyTorch-based project tries to JIT compile bias_act.cu. The build fails with the following message from nvcc:
nvcc fatal : Could not set up the environment for Microsoft Visual Studio using 'C:/Program Files (x86)/Microsoft Visual Studio/2022/BuildTools/VC/Tools/MSVC/14.43.34808/bin/HostX86/x64/../../../../../../../VC/Auxiliary/Build/vcvars64.bat'
ninja: build stopped: subcommand failed.
The path to vcvars64.bat seems correct, and running it manually in a terminal sets up the environment successfully (e.g., cl.exe becomes available). However, nvcc fails when attempting to use it automatically.
Details:
- This happens during JIT compilation of
bias_act.cu - CUDA version: 12.6
- Visual Studio Build Tools 2022 are installed (no full IDE, just Build Tools)
- The following is included in my system
PATH:
C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.43.34808\bin\Hostx86\x64