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You can accelerate the parameter estimation computations by changing the simulation mode of your Simulink model. Simulink Design Optimization software supports Normal and Accelerator simulation modes. For more information about these modes, see Accelerating Models in the Simulink documentation.
The default simulation mode is Normal. In this mode, Simulink software uses interpreted code, rather than compiled C code during simulations.
In the Accelerator mode, Simulink Design Optimization software runs simulations during estimation with compiled C code. Using compiled C code speeds up the simulations and reduces the time to estimate parameters.
You cannot use the Accelerator mode if your model contains algebraic loops. If the model contains MATLAB function blocks, you must either remove them or replace them with Fcn blocks.
To set the simulation mode to Accelerator, open the Simulink model window and perform one of the following actions:
Select Simulation > Accelerator.
Choose Accelerator from the drop-down list as shown in the next figure.

Tip To obtain the maximum performance from the Accelerator mode, close all Scope blocks in your model. |
![]() | Estimating and Validating Parameters in the GUI | Speeding Up Parameter Estimation Using Parallel Computing | ![]() |

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