Acceleration

Improve simulation speed with accelerator and rapid accelerator modes

Use Accelerator and Rapid Accelerator modes to achieve faster simulation without changing the model itself. To find out more, see What Is Acceleration?

Functions

`sim`	Simulate a Simulink model
`set_param`	Set system and block parameter values

`Simulink.BlockDiagram.buildRapidAcceleratorTarget`	Build Rapid Accelerator target for model and return run-time parameter set
`Simulink.BlockDiagram.getChecksum`	Return checksum of model
`Simulink.SubSystem.getChecksum`	Return checksum of nonvirtual subsystem
`slbuild`	Build standalone executable file or model reference target for model

Examples and How To

Design Your Model for Effective Acceleration
Learn about techniques to apply when using acceleration.
Perform Acceleration
Configure and run an accelerated model.
Interact with the Acceleration Modes Programmatically
Use command-line parameters for acceleration modes.
Run Accelerator Mode with the Simulink Debugger
Use the Accelerator mode with the debugger.
How to Improve Performance in Acceleration Modes
Improve acceleration performance.

Concepts

What Is Acceleration?
Introduces the accelerator and rapid accelerator modes.
How Acceleration Modes Work
Compares and contrasts normal, accelerator, and rapid accelerator modes.
Choosing a Simulation Mode
Based on your simulation needs, select to run your simulation in Normal, Accelerator, and Rapid Accelerator modes.
Code Regeneration in Accelerated Models
Identify the conditions under which code is regenerated.
Comparing Performance
Choose among acceleration speed tradeoffs and measure performance.

Featured Examples

Introduction to Accelerating Models

Simulink® Accelerator™ speeds up the execution of your model, by creating and compiling C code. This C code takes the place of the interpretive code that Simulink uses when in Normal mode (that is, when Simulink® is not in Accelerator mode). Simulink Accelerator generates the C code from the Simulink model and invokes the MATLAB® mex function to compile and dynamically link the generated code to Simulink. This code generation and compilation process happens the first time you accelerate the model and any time the model changes are significant enough to require re-generation (for example, the addition of a block).

Open Model

Determine Why Simulink Accelerator Is Regenerating Code

Sometimes Simulink® regenerates the simulation target for a model at the beginning of a simulation in Accelerator Mode but it is not always clear why regeneration happens. This example shows how to use Simulink MATLAB® commands to determine why Simulink regenerates code for Accelerator Mode simulations.

Open Live Script

Parallel Simulations Using Parsim: Parameter Sweep in Normal Mode

Run multiple simulations of a Monte Carlo study in parallel by using Parallel Computing Toolbox™. Parallel execution leverages the multiple cores of your host machine to run many simulations more quickly. These simulations could also be run in parallel on computer clusters using the MATLAB Parallel Server™. This example will work even if the Parallel Computing Toolbox™ or the MATLAB Parallel Server™ is not available, but the simulations will run in serial.

Open Model

Parallel Simulations Using Parsim: Parameter Sweep in Rapid Accelerator Mode

Open Model

Rapid Accelerator Simulations Using Parsim

The use of Rapid Accelerator in applications that require running parallel simulations for a range of input and parameter values.

Open Model