ubuntu@ubuntu-ST-KN:~/caffe$ sudo make runtest -j8
.build_release/tools/caffe
.build_release/tools/caffe: error while loading shared libraries: libcudart.so.9.0: cannot open shared object file: No such file or directory
Makefile:544: recipe for target 'runtest' failed
make: *** [runtest] Error 127

是由于找不到lib这个文件。

一般我们在Linux下执行某些外部程序的时候可能会提示找不到共享库的错误, 比如:

tmux: error while loading shared libraries: libevent-1.4.so.2: cannot open shared object file: No such file or directory

原因一般有两个, 一个是操作系统里确实没有包含该共享库(lib*.so.*文件)或者共享库版本不对, 遇到这种情况那就去网上下载并安装上即可. 

另外一个原因就是已经安装了该共享库, 但执行需要调用该共享库的程序的时候, 程序按照默认共享库路径找不到该共享库文件. 

所以安装共享库后要注意共享库路径设置问题

https://www.cnblogs.com/Anker/p/3209876.html

解决方式：

执行如下命令：

ubuntu@ubuntu-ST-KN:~/caffe$ sudo cp /usr/local/cuda/lib64/libcudart.so.9.0 /usr/local/lib/libcudart.so.9.0 && sudo ldconfig
ubuntu@ubuntu-ST-KN:~/caffe$ sudo make runtest -j8

注意：

因为我的 /usr/local/cuda 是 /usr/local/cuda-9.0的symbol link，如下图所示，所以这里可以用：

sudo cp /usr/local/cuda/lib64/libcudart.so.9.0 /usr/local/lib/libcudart.so.9.0 && sudo ldconfig

代替

sudo cp /usr/local/cuda-9.0/lib64/libcudart.so.9.0 /usr/local/lib/libcudart.so.9.0 && sudo ldconfig

类似问题如下：

ubuntu@ubuntu-ST-KN:~/caffe$ sudo make runtest -j8

.build_release/tools/caffe
.build_release/tools/caffe: error while loading shared libraries: libcublas.so.9.0: cannot open shared object file: No such file or directory
Makefile:544: recipe for target 'runtest' failed
make: *** [runtest] Error 127

ubuntu@ubuntu-ST-KN:~/caffe$  sudo cp /usr/local/cuda/lib64/libcublas.so.9.0 /usr/local/lib/libcublas.so.9.0 && sudo ldconfig
ubuntu@ubuntu-ST-KN:~/caffe$ sudo make runtest -j8

.build_release/tools/caffe
.build_release/tools/caffe: error while loading shared libraries: libcurand.so.9.0: cannot open shared object file: No such file or directory
Makefile:544: recipe for target 'runtest' failed
make: *** [runtest] Error 127
ubuntu@ubuntu-ST-KN:~/caffe$ sudo cp /usr/local/cuda/lib64/libcurand.so.9.0 /usr/local/lib/libcurand.so.9.0 && sudo ldconfig
ubuntu@ubuntu-ST-KN:~/caffe$ sudo make runtest -j8

.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:544: recipe for target 'runtest' failed
make: *** [runtest] Error 127
ubuntu@ubuntu-ST-KN:~/caffe$ sudo cp /usr/local/cuda/lib64/libcudnn.so.7 /usr/local/lib/libcudnn.so.7 && sudo ldconfig
ubuntu@ubuntu-ST-KN:~/caffe$ sudo make runtest -j8