Manual Performance Optimization

Optimize model settings manually, identify and resolve performance bottlenecks

Achieve faster simulation with your models by manually optimizing the model using one or more of these techniques. For more information, see How Optimization Techniques Improve Performance and Accuracy.

Tools

Simulink Profiler

Analyze distribution of simulation execution time among model components

Functions

`sldiagnostics`	Display diagnostic information of Simulink system
`generateReport`	Create report of data from profiling simulation run using Simulink Profiler (Since R2023a)

Objects

Simulink.profiler.Data Access profiling information created using Simulink Profiler (Since R2020a)

Model Settings

Model Configuration Parameters: Simulation Target

Topics

Speed Up Simulation
Techniques for improving simulation speed.
Check and Improve Simulation Accuracy
How to interpret simulation accuracy and incorrect simulations.
How Profiler Captures Performance Data
How the Profiler identifies parts of your model that slow down simulation.
How Optimization Techniques Improve Performance and Accuracy
Use optimization techniques to understand model behavior and modify model settings to improve performance and accuracy.
Modeling Techniques That Improve Performance
Approaches for improving model performance.
Running Multiple Simulations
Run multiple simulations from the parsim and batchsim commands, and the Multiple Simulations panel in Simulink^® Editor.
Understanding Total Time and Self Time in Profiler Reports
The Simulink Profiler displays the performance of the components of your model and their simulation phases.

Featured Examples

Model Advisor

The capabilities of the Model Advisor to check a model or subsystem for conditions and configuration settings that can result in inaccurate or inefficient simulation of the system represented by the model or generation of inefficient code from the model. The Model Advisor produces a report that lists all the suboptimal conditions or settings that it finds, suggesting better model configuration settings where appropriate.

Open Live Script

Introduction to Profiling Models

Identify issues that can contribute to poor simulation performance.

Open Model

Simulink Model Discretizer

This interactive example shows how to discretize the Actuator Model in the slexAircraftExample model.

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Parallel Simulations Using Parsim: Test-Case Sweep

Run multiple Simulink® simulations corresponding to different test cases in the Signal Editor block using SimulationInput objects and the parsim command. The parsim command uses Parallel Computing Toolbox™, if it is available, to run simulations in parallel, otherwise the simulations are run in serial.

Open Model

Multiple Simulations Workflow Tips

The goal of this example is to provide helpful tips for running multiple simulations using parallel simulation tools. This example will work even if the Parallel Computing Toolbox™ is not available, but the simulations will run in serial. We will be using the model sldemo_suspn_3dof.

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