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.. comment SPDX-License-Identifier: CC-BY-SA-4.0

.. Copyright (C) 2018 Chris Johns <chrisj@rtems.org>

Simulation
----------
.. index:: Simulation, Testing

Simulation is a important regression and development tool for RTEMS. Developers
use simulation to work on core parts of RTEMS as it provides excellent
debugging supporting. Simulation run via the RTEMS Tester allows a test to run
on each core of your testing host machine lower the time to run all tests.

.. _fig-tester-simulation:

.. figure:: ../../images/user/test-simulation.png
   :width: 30%
   :alt: RTEMS Tester Simulation
   :figclass: align-center

   RTEMS Tester Simulation

The :ref:`fig-tester-simulation` figure shows the structure of RTEMS Testing
using simulation. The executables are built and the ``rtems-test`` command is
run from the top of the build directory. The RTEMS Tester executes the
BSP specific simulator for each test capturing the output