Configure Your Model for Concurrent Execution
Follow these steps to configure your Simulink® model to take advantage of concurrent execution.
- Open your model. 
- On the Modeling tab, click Model Settings. 
- Select Solver, then in the Solver selection section, choose - Fixed-stepfor the Type and- auto (Automatic solver selection)for the Solver.
- Under Solver details, select Allow tasks to execute concurrently on target. Selecting this check box is optional for models referenced in the model hierarchy. When you select this option for a referenced model, Simulink allows each rate in the referenced model to execute as an independent concurrent task on the target processor. 
- Select Code Generation > Interface > Advanced parameters, clear the MAT-file logging check box. 
Once you have a model that executes concurrently on your computer, you can further configure your model in the following ways: