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 dynamic system
`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 or model reference target for model

Examples and How To

Design Your Model for Effective Acceleration

Techniques to apply when using acceleration

Perform Acceleration

How to configure and run an accelerated model

Interact with the Acceleration Modes Programmatically

How to use command-line parameters

Run Accelerator Mode with the Simulink Debugger

How to use the Accelerator mode with the debugger

How to Improve Performance in Acceleration Modes

Ways to 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

Describes the conditions under which code is regenerated

Comparing Performance

Understanding acceleration speed tradeoffs, and measuring performance

Featured Examples

Introduction to Accelerating Models

Simulink® Accelerator™ speeds up the execution of your model, by creating and compiling C code that 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 your 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 Script

Determining Why Simulink Accelerator Is Regenerating Code

Sometimes Simulink® regenerates the simulation target for a model at the beginning of a simulation in Accelerator Mode (TM) 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 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 Script