error while loading shared libraries: libcudnn.so.7: cannot open shared object file: No such file or
1、错误：libcudnn.so.7
.build_release/tools/caffe
.build_release/tools/caffe: error while loading shared libraries: libcudnn.so.7: cannot open shared object file: No such file or directory
Makefile:542: recipe for target 'runtest' failed
make: *** [runtest] Error 127
原因分析：
主要是 /usr/local/lib/目录下找不到libcudnn.so.7这个文件， 该文件可以在usr/local/cuda-8.0/lib64/目录下找到，因此我们通过下面的命令将libcudnn.so.7这个文件复制一份过去，记得要加sudo权限，否则可能无法复制。
参考链接：
https://www.cnblogs.com/is-Tina/p/7719599.html
https://blog.csdn.net/qq_38451119/article/details/81126692
解决方案：
终端执行：
sudo cp /usr/local/cuda/lib64/libcudnn.so.7 /usr/local/lib/libcudnn.so.7
sudo ldconfig
执行后，不在报错，成功解决。
类似问题：
2、错误：libcudart.so.8.0
.build_release/tools/caffe
.build_release/tools/caffe: error while loading shared libraries: libcudart.so.8.0: cannot open shared object file: No such file or directory
Makefile:542: recipe for target 'runtest' failed
make: *** [runtest] Error 127
解决方法：执行
sudo cp /usr/local/cuda-8.0/lib64/libcudart.so.8.0 /usr/local/lib/libcudart.so.8.0 && sudo ldconfig
3、错误：libcublas.so.8.0
.build_release/tools/caffe
.build_release/tools/caffe: error while loading shared libraries: libcublas.so.8.0: cannot open shared object file: No such file or directory
Makefile:542: recipe for target 'runtest' failed
make: *** [runtest] Error 127
解决方案：执行
sudo cp /usr/local/cuda-8.0/lib64/libcublas.so.8.0 /usr/local/lib/libcublas.so.8.0 && sudo ldconfig
4、错误： libcurand.so.8.0
.build_release/tools/caffe
.build_release/tools/caffe: error while loading shared libraries: libcurand.so.8.0: cannot open shared object file: No such file or directory
Makefile:542: recipe for target 'runtest' failed
make: *** [runtest] Error 127
解决方案：执行
sudo cp /usr/local/cuda-8.0/lib64/libcurand.so.8.0 /usr/local/lib/libcurand.so.8.0 && sudo ldconfig