NI MATRIXx Reference Manual

Vectorized Code Generation

This chapter discusses various ways to generate vectorized code.

This includes describing the options available, design guidelines,

and implementation details about the vectorized code.

Introduction

AutoCode has the capability to generate vectorized code. The default code

generation style, however, remains to be all scalars. Vectorized code has

two attributes:

• Signals are represented as arrays instead of scalars in the generated

code

• Algorithms use loops to roll the code into a compact algorithm

Some of the benefits of vectorized code generation include:

• Smaller source size

• Smaller object code size

• Efficient implementation of large systems

• Loops with general BlockScript blocks

• Mixed scalar and vectorized code within the same model

You do not have to change your pre-release 7.x SystemBuild models to get

the benefits of vectorization. AutoCode implements all of the standard

block algorithms in a vectorized way that can be realized in MATRIXx 7.x

and later. Of course, a model designed specifically to take advantage of

vectorized code will perform better than one designed for scalar code.

How Code Is Generated

This section introduces the look of vectorized code by comparing the

code to the equivalent scalar code. The gain block illustrates most of the

concepts of vectorized code generation. For this example, assume a

10 input/output gain block with various gain parameters connected directly

to the subsystem external input and output.