DSP 算法加速

使用数据流多线程或生成的 MEX 函数加速

通过使用 dspunfold 函数生成多线程 MEX 文件，您可以提高 MATLAB^® 函数的仿真吞吐量。

在 Simulink^® 中，数据流域自动对您的模型进行分区，并使用多个线程对系统进行仿真。通过向系统添加算法延迟，您可以进一步提高并发性并改进模型的仿真吞吐量。

函数

`dspunfold`	Generates a multi-threaded MEX file from a MATLAB function
`codegen`	从 MATLAB 代码生成 C/C++ 代码

模块

Dataflow Subsystem

Subsystem whose execution domain is set to Dataflow

主题

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Workflow for Generating a Multithreaded MEX File using dspunfold
This section discusses the recommended workflow of generating the multithreaded MEX and verifying the results using the analyzer.
Multithreaded MEX File Generation
This example shows how to use the dspunfold function to generate a multithreaded MEX file from a MATLAB® function using unfolding technology.
Signal Processing Algorithm Acceleration in MATLAB
Accelerate signal processing algorithm with codegen and dspunfold.
How Is dspunfold Different from parfor?
This page should detail the users on when to use dspunfold and when to use parfor.

数据流

Dataflow Domain
Simulate a system using synchronous dataflow.
Multicore Simulation and Code Generation of Dataflow Domains
Types of parallelism. Simulation and code generation of dataflow domains using multiple threads.
Model Multirate Signal Processing Systems Using Dataflow
Use a Dataflow Subsystem to automatically calculate frame sizes in multirate systems.
Perform Multicore Analysis for Dataflow
When a system is configured to use a dataflow execution domain, the Multicore tab is activated on the Simulink toolstrip.

疑难解答

Why Does the Analyzer Choose the Wrong State Length?

This section discusses the example where the state length depends on the input which causes verification failure. Debugging steps are also included.

Why Does the Analyzer Choose a Zero State Length?

This section discusses the example where the input does not have an immediate effect on the output. Hence, state length of 0 is considered in spite of the algorithm containing states.