最近安装maxnet_gpu版本，出现错误，特此记录和给出解决方法。 OSError: libnccl.so.2: cannot open shared object file: No such file or directory mxnet 主要是缺少 libnccl库。由于登录官网下载需要注册，这里记录一下对应cuda10.2的安装命令。

Ubuntu18.04版本的，实测20版本也能用

$ wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-keyring_1.0-1_all.deb

$ sudo dpkg -i cuda-keyring_1.0-1_all.deb

$ sudo apt-get update

sudo apt install libnccl2=2.15.5-1+cuda10.2 libnccl-dev=2.15.5-1+cuda10.2

CUDA 11.8版本

Network Installer for Ubuntu22.04

$ wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/cuda-keyring_1.0-1_all.deb

$ sudo dpkg -i cuda-keyring_1.0-1_all.deb

$ sudo apt-get update

Network Installer for Ubuntu20.04

$ wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/cuda-keyring_1.0-1_all.deb

$ sudo dpkg -i cuda-keyring_1.0-1_all.deb

$ sudo apt-get update

Network Installer for Ubuntu18.04

$ wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-keyring_1.0-1_all.deb

$ sudo dpkg -i cuda-keyring_1.0-1_all.deb

$ sudo apt-get update

最后：

sudo apt install libnccl2=2.15.5-1+cuda11.8 libnccl-dev=2.15.5-1+cuda11.8

好文链接

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