环境

python3.7
windows10
cuda11.1
pytorch1.8.1
虚拟环境miniconda

目的

windows下载github中的torchlars包

遇到的问题

问题一：直接下载好文件夹输入指令：python setup.py install
出现错误：RuntimeError: Error compiling objects for extension
解决方法：应先输入python setup.py build develop

问题二：subprocess.CalledProcessError: Command ‘[‘ninja’, ‘-v’]’ returned non-zero exit status 1.
解决方法：
修改torchlars 中的setup文件：

# cmdclass={'build_ext': BuildExtension},
cmdclass={'build_ext': BuildExtension.with_options(use_ninja=False)},

具体步骤

1、检查Microsoft Visual Studio的版本（需2017、2019），如没有Microsoft Visual Studio或者版本不对，会出现bug：
fatal error C1189: #error: – unsupported Microsoft Visual Studio version! Only the versions between 2017 and 2019 (inclusive) are supported! The nvcc flag ‘-allow-unsupported-compiler’ can be used to override this version check; however, using an unsupported host compiler may cause compilation failure or incorrect run time execution. Use at your own risk. error: command ‘C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v11.1\bin\nvcc.exe’ failed with exit code 2

2、python setup.py build develop
3、python setup.py install