Description

For certain blocks, enable optimized algorithms for row-major format code generation and corresponding row-major algorithms for model simulation.

Category:Math and Data Types

Settings

Default:Off

WhenArray layout(Simulink Coder)is set toRow-major, the code generator uses algorithms to maintain consistency of numeric results between the simulation and the generated code. Sometimes, the generated code for these algorithms might be inefficient. You can enable theUse algorithms optimized for row-major array layoutconfiguration parameter to enable efficient algorithms that are optimized for certain blocks. TheUse algorithms optimized for row-major array layoutparameter affects the simulation and the generated code.

This parameter affects only these blocks:

For these blocks, the column-major and row-major algorithms might differ in the order of output calculations, possibly resulting in slightly different numeric values.

Tips

WhenArray layoutis set toRow-major, the row-major algorithm operates on table data that is contiguous in memory. This table data leads to faster cache access, making these algorithms cache-friendly.

This table summarizes the relationship between array layout and cache-friendly algorithms. It is a best practice to use the algorithm that is optimized for the specified array layout to achieve good performance. For example, selectUse algorithms optimized for row-major array layoutwhen theArray layoutis set toRow-majorfor code generation.

Command-Line Information

Recommended Settings