third-party dynamic library (libcudnn.so) that Paddle depends on is not configured correctl

Run the code of Baidu PaddlePaddle , Report the following error , And give tips , Is due to cuda Errors caused by not configuring well .

W0705 10:39:02.694573 2471961 gpu_context.cc:278] Please NOTE: device: 0, GPU Compute Capability: 8.6, Driver API Version: 11.4, Runtime API Version: 11.2
W0705 10:39:02.694808 2471961 dynamic_loader.cc:305] The third-party dynamic library (libcudnn.so) that Paddle depends on is not configured correctly. (error code is /usr/local/cuda/lib64/libcudnn.so: cannot open shared object file: No such file or directory)
  Suggestions:
  1. Check if the third-party dynamic library (e.g. CUDA, CUDNN) is installed correctly and its version is matched with paddlepaddle you installed.
  2. Configure third-party dynamic library environment variables as follows:
  - Linux: set LD_LIBRARY_PATH by `export LD_LIBRARY_PATH=...`
  - Windows: set PATH by `set PATH=XXX;

But the computer is installed paddle, And run successfully gpu Code , So it should be configured cuda and cudnn.

Solution steps (linux In the environment ： Set up “LD_LIBRARY_PATH” Dynamic link library )：

1. lookup Linux Ordinary users in their own Anaconda In the virtual environment directory cudnn

   (paddle) [email protected]:~/anaconda3/envs/paddle/lib$ pwd
   /home/ninjia/anaconda3/envs/paddle/lib
   

2. stay /home/ninjia The configuration file under the directory .bashrc perhaps .bash_profile Add export sentence , The former in every login and every open shell Read once , The latter is read only once when logging in . My habit is to add ~/.bashrc in , At the end of the file , The following statement can be used to set “ Dynamic link library ” LD_LIBRARY_PATH take effect ：

   export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/ninjia/anaconda3/envs/paddle/lib
   

3. After modification ,source .bashrc take effect

   (base) [email protected]:~$ source .bashrc
   

LD_LIBRARY_PATH Detailed explanation

LD_LIBRARY_PATH Detailed explanation
LD_LIBRARY_PATH yes Linux Environment variable name , This environment variable is mainly used to specify the search of shared libraries （ Dynamic link library ） In addition to the default path .

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Reference material ：
PreconditionNotMetError: The third-party dynamic library (libcublas.so) that Paddle depends on is no
linux Of LD_LIBRARY_PATH Variable is set
Set up Linux Of LD_LIBRARY_PATH Variable
The third-party dynamic library (libcudnn.so) that Paddle depends on is not configured correctly
LD_LIBRARY_PATH Detailed explanation