【已解决】onnx无法找到CUDA的路径

报错

RuntimeError: D:\a_work\1\s\onnxruntime\python\onnxruntime_pybind_state.cc:857 onnxruntime::python::CreateExecutionProviderInstance CUDA_PATH is set bu
t CUDA wasnt able to be loaded. Please install the correct version of CUDA andcuDNN as mentioned in the GPU requirements page (https://onnxruntime.ai/docs/execution-providers/CUDA-ExecutionProvider.html#requirements), make sure they're in the PATH, and that your GPU is supported.

问题分析

onnx找到了gpu，但是还是不能调用

解决办法

1. 先检查一下cudnn的环境变量配置是否正确，如果不正确，先看看怎么安装cudnn

2. 接下来是环境变量没问题的情况

    环境变量没问题的话，一般就是cudnn和cuda以及onnx的版本不匹配
   
    版本匹配看这里
   
    查看好自己cudnn和cuda对应onnx版本后，输入这个
   

pip install onnxruntime-gpu==what_you_want_version --extra-index-url https://aiinfra.pkgs.visualstudio.com/PublicPackages/_packaging/onnxruntime-cuda-12/pypi/simple/

    将

what_you_want_version

换成你需要的版本，如我是cuda12.x以及cudnn8.x

    那么就是

pip install onnxruntime-gpu==1.18.1 --extra-index-url https://aiinfra.pkgs.visualstudio.com/PublicPackages/_packaging/onnxruntime-cuda-12/pypi/simple/