Simulation Accelerator Modes
Simulink can generate C/C++ executable code to shorten simulation time. Two simulation modes generate code:
Accelerator
Rapid Accelerator
SimMechanics supports the two accelerator modes. You can access the simulation accelerator modes in the Simulink Editor window for your model. Click Simulation > Mode, and select Accelerator or Rapid Accelerator. Accelerator modes do not require additional Simulink code generation products.