# 6. Running the Case

After setting up the simulation, we will create a simulation run from it and then run it.

```{note}
For this step, your account on the AeroSim platform must be authorized for it. Please
contact AeroSim support in case you don't have authorization.
```

## Creating a Run

To create a run, we click the play button in the simulation, which opens a new run form.
It shows a summary of the simulation for you to check before running: the estimated
runtime at the chosen MLUPS, the time step, the mesh size and memory, and the total size
of the exports.

```{eval-rst}
.. figure:: /_static/img/workshops/first-abl-simulation/06-run-form.png
    :align: center

    The run form, with the runtime estimate, the mesh summary and the export budget.
    The warning at the bottom appears when the exports we configured add up to a large
    volume of data.
```

## Running the Simulation

After that, the simulation run is created. It freezes the configuration, and now we are
able to run it. For running it, click the play button, and then the simulation is
submitted to a queue. The case will then run as soon as there is an available GPU to
consume it from the queue.

```{eval-rst}
.. figure:: /_static/img/workshops/first-abl-simulation/06-created-run.png
    :align: center

    The created run under **Simulation Runs**, still with status *Not Started*.
```

## Monitoring the Simulation

During the simulation you can check its **Logs**, which show messages on the simulation
progression.

```{eval-rst}
.. figure:: /_static/img/workshops/first-abl-simulation/06-logs-example.png
    :align: center

    Simulation logs, reporting each step of the setup and the run.
```

Another tool to check the simulation are the **Monitors**, which report the global values
of the fields, such as pressure and velocity (in full scale and in LBM scale). This helps
to check whether the simulation is having weird behaviour, or how long it takes to
stabilize a pressure wave, for example.

```{eval-rst}
.. figure:: /_static/img/workshops/first-abl-simulation/06-monitors.png
    :align: center

    Monitors for pressure and the velocity components, mean, min and max over time. The
    initial transient in pressure settles well before :math:`t = 0`.
```

## Checking Results

After the simulation has finished, we can download its results from the **Results** node
of the run. Geometries, mesh and the exports are all available there, each item
downloadable on its own, and all of them are compatible with
[ParaView](https://www.paraview.org/).

```{eval-rst}
.. figure:: /_static/img/workshops/first-abl-simulation/06-results-download.png
    :align: center

    The results panel, listing the mesh, the geometries and every export as XDMF and H5
    files.
```

In the next chapter we will use these downloaded results for
[visualization and processing](07-results.md) in ParaView.