title: Difference between the terms OpenMPI and MPI API from output of mpi_info
body: <p>when I type <code>ompi_info</code> on my terminal, I get a huge output on my terminal buffer, a part of which looks like : </p>
  
  <pre><code>Package: Open MPI buildd@lgw01-57 Distribution
  Open MPI: 1.10.2
  Open MPI repo revision: v1.10.1-145-g799148f
  Open MPI release date: Jan 21, 2016
  Open RTE: 1.10.2
  Open RTE repo revision: v1.10.1-145-g799148f
  Open RTE release date: Jan 21, 2016
  OPAL: 1.10.2
  OPAL repo revision: v1.10.1-145-g799148f
  OPAL release date: Jan 21, 2016
  MPI API: 3.0.0
  Ident string: 1.10.2
  Prefix: /usr
  Configured architecture: x86_64-pc-linux-gnu
  Configure host: lgw01-57
  Configured by: buildd
  </code></pre>
  
  <p>Ignoring the info on <em>release dates</em>, I am curious specifically about the meaning of  second line: <code>Open MPI : 1.10.2</code> and line number twelve: <code>MPI API : 3.0.0</code> . Does it mean the new functions from Open MPI version 3.0.0 available on the MPI version 1.10.2 ? </p>