cudnn安装时软链接问题

@记录一下再安装cudnn时候自己遇到的问题

问题

主要是在执行以下命令的时候遇到了问题：

sudo dpkg -i libcudnn8_8.2.0.53-1+cuda11.3_amd64.deb

反应了一段时间后就开始报错，错误内容如下，主要表达的意思就是没有建立软连接。

(Reading database ... 166835 files and directories currently installed.)
Preparing to unpack libcudnn8_8.2.0.53-1+cuda11.3_amd64.deb ...
Unpacking libcudnn8 (8.2.0.53-1+cuda11.3) over (8.2.0.53-1+cuda11.3) ...
Setting up libcudnn8 (8.2.0.53-1+cuda11.3) ...
Processing triggers for libc-bin (2.27-3ubuntu1.6) ...
/sbin/ldconfig.real: /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_adv_train.so.8 is not a symbolic link

/sbin/ldconfig.real: /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_ops_train.so.8 is not a symbolic link

/sbin/ldconfig.real: /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_ops_infer.so.8 is not a symbolic link

/sbin/ldconfig.real: /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_cnn_train.so.8 is not a symbolic link

/sbin/ldconfig.real: /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_cnn_infer.so.8 is not a symbolic link

/sbin/ldconfig.real: /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_adv_infer.so.8 is not a symbolic link

/sbin/ldconfig.real: /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn.so.8 is not a symbolic link

解决办法

我自己cuda安装的是cuda-11.3版本的，在终端中输入以下命令的时候要改成自己的cuda对应的版本。

sudo ln -sf /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_cnn_train.so.8.2.0 /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_cnn_train.so.8
sudo ln -sf /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_adv_infer.so.8.2.0 /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_adv_infer.so.8
sudo ln -sf /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_adv_train.so.8.2.0 /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_adv_train.so.8
sudo ln -sf /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_cnn_infer.so.8.2.0 /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_cnn_infer.so.8
sudo ln -sf /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn.so.8.2.0 /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn.so.8
sudo ln -sf /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_ops_infer.so.8.2.0 /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_ops_infer.so.8
sudo ln -sf /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_ops_train.so.8.2.0 /usr/local/cuda-11.3/targets/x86_64-linux/lib/libcudnn_ops_train.so.8

将以上命令依次输入后完美解决所有问题。