Accelerating Simulink Models
The Simulink software offer Accelerator and Rapid
Accelerator simulation modes that remove much of the computational
overhead required by Simulink models. These modes compile target code
of your model. Through this method, the Simulink environment can achieve
substantial performance improvements for larger models. The performance
gains are tied to the size and complexity of your model. Therefore,
large models that contain Computer Vision Toolbox™ blocks
run faster in Rapid Accelerator or Accelerator mode.
To change between Rapid Accelerator, Accelerator,
and Normal mode, use the drop-down list at the
top of the model window.

For more information on the accelerator modes in Simulink®, see Choosing a Simulation Mode (Simulink).