Simulations can take a long time to run. Saving a playback lets you keep a finished simulation and open it again later to replay it, without running it again.

A playback is saved as a .cpmp file. It contains a copy of the model and the recorded simulation, including avatar movements, heatmaps, evacuation times and gate shares.

Saving a playback

  1. Run a simulation until it finishes.
  2. Go to File > Save Playback.
  3. Choose where to save the file and click Save. By default, the playback is saved in the same folder as your model, with the same name.

Saving progress is shown in the console at the bottom of the screen. When the save is finished, the console shows the file location and size.

Note: you can only save a playback after a simulation has finished. Running a new simulation, or opening another model, replaces the recording, so save the playback before doing either.

Note: playback files can be large for long simulations or simulations with many avatars.

Opening a playback

  1. Go to File > Open (Ctrl + O). The file browser shows both models (.cpm) and playbacks (.cpmp).
  2. Select the .cpmp file.

The model loads and the recorded simulation is ready to replay. A dialog shows the playback details:

  • Model: the name of the model.
  • Agents: the number of avatars in the simulation.
  • Evacuation Time: how long the simulation took to finish.
  • Recorded: the date and time the simulation was run.
  • Recorded With Version: the version of Smart Crowd Model used to run the simulation.

Once it is open, you can use the playback controls to replay, pause and change speed, and view heatmaps, the same as after running the simulation.

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