UserWarning: CUDA initialization: Unexpected error from cudaGetDeviceCount(). Did you run some cuda functions before calling NumCudaDevices() that might have already set an error? Error 802: system not yet initialized (Triggered internally at ../c10/cuda/CUDAFunctions.cpp:108.)

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1. 下载 nvidia-fabric-manager-535.183.01 RPM 包，首先，访问 NVIDIA CUDA 下载页面 或 NVIDIA驱动程序下载页面，选择对应的 Linux 版本和驱动版本，找到 nvidia-fabric-manager 相关链接。可以直接使用以下命令从已知的存储库获取该包(请确认这是正确的路径)：
wget https://developer.download.nvidia.com/compute/cuda/repos/rhel7/x86_64/nvidia-fabric-manager-535.183.01-1.x86_64.rpm

2.下载完成后，使用 dnf 或 rpm 来安装这个包：
sudo rpm -ivh nvidia-fabric-manager-535.183.01-1.x86_64.rpm

3.启用并启动服务：
sudo systemctl enable nvidia-fabricmanager
sudo systemctl start nvidia-fabricmanager

4.确认服务已启动：
sudo systemctl status nvidia-fabricmanager

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sudo nano /etc/dnf/dnf.conf

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[main]

gpgcheck=1

installonly_limit=3

clean_requirements_on_remove=True

exclude=nvidia-fabricmanager*

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