Using Simulink

Blocks That Do Not Show Speed Improvements

The Simulink Accelerator is compatible with all MathWorks blocksets, but only two, the Fixed Point Blockset and the DSP Blockset, achieve significantly improved performance with the Accelerator.

Although you can greatly improve simulation performance of your models that use Simulink, Fixed Point Blockset, and DSP Blockset blocks, there is a subset of Simulink and DSP Blockset blocks that are currently not sped up by the Accelerator. The following table lists these blocks.

Table 12-1: Blocks That Do Not Achieve Performance Increases  

Simulink Blocks	DSP Blockset Blocks
Display	Biquadratic Filter
From File	Convolution
From Workspace	Direct-Form II Transpose Filter
Inport (root level only)	Dyadic Analysis Filter Bank/ Dyadic Synthesis Filter Bank
MATLAB Fcn	FIR Decimation/FIR Interpolation/ FIR Rate Conversion
Outport (root level only)	From Wave Device/From Wave File
Scope	Integer Delay/Variable Integer Delay
To File	Matrix Multiply/Matrix To Workspace
To Workspace	Triggered Signal To Workspace/ Triggered Signal From Workspace
Transport Delay	Time-Varying Direct-Form II Transpose Filter
Variable Transport Delay	To Wave File/To Wave Device
XY Graph	Wavelet Analysis/Wavelet Synthesis Zero Pad

In addition, the Accelerator does not speed up user-written S-Function blocks unless you inline them using the Target Language Compiler and have set SS_OPTION_USE_TLC_WITH_ACCELERATOR in the S-function itself. See Controlling S-Function Execution for more information.

Increasing Performance of Accelerator Mode

Using the Simulink Accelerator with the Simulink Debugger