title: Hello_World not playing with mpi4py on Cluster:II
body: <p>Again, trying to learn mpi4py on the local cluster. I hence wrote a hello_world program, and it JUST WON'T RUN! I have attached the .py code, and the error. Could someone point out what I am doing wrong? Thanks in advance.</p>
  
  <p>hello world:</p>
  
  <pre><code>from mpi4py import MPI
  comm=MPI.COMM_WORLD
  print("Hello, World! My rank is: " + str(comm.rank))
  </code></pre>
  
  <p>error message:</p>
  
  <pre><code>Traceback (most recent call last):
   File "./MPI_Hello_World.py", line 1, in &lt;module&gt;
   from mpi4py import MPI
  
  ImportError: libmpich.so.3: cannot open shared object file: No such file or directory
  Traceback (most recent call last):
  File "./MPI_Hello_World.py", line 1, in &lt;module&gt;
  from mpi4py import MPI
  
  
  ImportError: libmpich.so.3: cannot open shared object file: No such file or directory
  Traceback (most recent call last):
  File "./MPI_Hello_World.py", line 1, in &lt;module&gt;
  from mpi4py import MPI
  
  ImportError: libmpich.so.3: cannot open shared object file: No such file or directory
  Traceback (most recent call last):
  File "./MPI_Hello_World.py", line 1, in &lt;module&gt;
  from mpi4py import MPI
  
  ImportError: libmpich.so.3: cannot open shared object file: No such file or directory
  Traceback (most recent call last):
  File "./MPI_Hello_World.py", line 1, in &lt;module&gt;
  from mpi4py import MPI
  
  ImportError: libmpich.so.3: cannot open shared object file: No such file or directory
  Traceback (most recent call last):
  File "./MPI_Hello_World.py", line 1, in &lt;module&gt;
  from mpi4py import MPI
  
  ImportError: libmpich.so.3: cannot open shared object file: No such file or directory
  </code></pre>
  
  <p><a href="https://stackoverflow.com/questions/20097763/hello-world-not-playing-with-mpi4pi-on-cluster">See here for the part-I of the question.</a></p>