title: OSError: libcublas.so.3: cannot open shared object file: No such file or directory
body: <p>I tried to import cudamat. Then I ran into the error:</p>
  <pre><code>OSError: libcublas.so.3: cannot open shared object file: No such file or directory
  </code></pre>
  <p>I tried to locate libcublas</p>
  <pre><code>/usr/local/MATLAB/MATLAB_Production_Server/R2013a/bin/glnxa64/libcublas.so.5.0
  /usr/local/MATLAB/MATLAB_Production_Server/R2013a/bin/glnxa64/libcublas.so.5.0.40
  /usr/local/cuda-5.5/lib/libcublas.so
  /usr/local/cuda-5.5/lib/libcublas.so.5.5
  /usr/local/cuda-5.5/lib/libcublas.so.5.5.22
  /usr/local/cuda-5.5/lib/libcublas_device.a
  /usr/local/cuda-5.5/lib64/libcublas.so
  /usr/local/cuda-5.5/lib64/libcublas.so.5.5
  /usr/local/cuda-5.5/lib64/libcublas.so.5.5.22
  /usr/local/cuda-5.5/lib64/libcublas_device.a
  /usr/local/cuda-5.5/targets/x86_64-linux/lib/libcublas.so
  /usr/local/cuda-5.5/targets/x86_64-linux/lib/libcublas.so.5.5
  /usr/local/cuda-5.5/targets/x86_64-linux/lib/libcublas.so.5.5.22
  /usr/local/cuda-5.5/targets/x86_64-linux/lib/libcublas_device.a
  </code></pre>
  <p>What can I do? I'm sorry I'm not familiar with ubuntu. Thank you !</p>
  <h1>QUESTION CLOSED</h1>
  <h1>I solved this myself.</h1>
  <p>first set PATH and LD_LIBRARY_PATH</p>
  <pre><code>$ export PATH=/usr/local/cuda-5.5/bin:$PATH
  $ export LD_LIBRARY_PATH=/usr/local/cuda-5.5/lib64:$LD_LIBRARY_PATH
  </code></pre>
  <p>Then build a symbolic link</p>
  <pre><code>sudo ln -s /usr/local/cuda-5.5/lib64/libcublas.so /usr/local/cuda-5.5/lib64/libcublas.so.3
  </code></pre>