//www.mcs.anl.gov/petsc/petsc-current/src/ksp/ksp/tutorials/ex42.c.html#line2059">main program source code</a></li>
  <li><a href="https://www.mcs.anl.gov/petsc/petsc-current/src/ksp/ksp/tutorials/ex42.c.html#line819">physics source code</a></li>
</ul>

<p>DO THE FOLLOWING:</p>
<ul>
  <li> Compile src/ksp/ksp/tutorials/ex42.c
    <pre>
      cd petsc/src/ksp/ksp/tutorials
      make ex42
  </pre>
  </li>
  <li> Solve with the default solver
    <pre>
     mpiexec -n 4 ./ex42  -stokes_ksp_monitor   <a href="