parallel (2D)
'''''''''''''

:Sources:

.. collapse:: parallel_2d.cc (click to expand)

.. literalinclude:: examples/c++/solid_mechanics_model/parallel/parallel_2d.cc
:language: c++
:lines: 20-

.. collapse:: material.dat (click to expand)

.. literalinclude:: examples/c++/solid_mechanics_model/parallel/material.dat
:language: text

:Location:

``examples/c++/solid_mechanics_model/`` `parallel <https://gitlab.com/akantu/akantu/-/blob/master/examples/c++/solid_mechanics_model/parallel>`_

In ``parallel``, an example of how to run a 2D parallel simulation is presented.

First, the mesh needs to be distributed among the processors. This is done with::

const auto & comm = Communicator::getStaticCommunicator();
Int prank = comm.whoAmI();
if (prank == 0) {
mesh.read("square_2d.msh");
}
mesh.distribute();

Here ``prank`` designate the processor rank. The mesh is read only by processor 0 and then distributed among all the processors.
All the prints are done only by processor 0. For instance::

if (prank == 0) {
std::cout << model.getMaterial(0) << std::endl;
}

.. figure:: examples/c++/solid_mechanics_model/parallel/images/parallel.png
:align: center
:width: 60%

Displacement in the x direction.