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DSP アルゴリズムの高速化
関数 dspunfold
を使用してマルチスレッド MEX ファイルを生成し、MATLAB® 関数のシミュレーションのスループットを向上させることができます。
Simulink® では、データフロー領域は、モデルを自動的に分割し、複数のスレッドを使用してシステムをシミュレートします。アルゴリズムのレイテンシをシステムに追加することで、同時実行をさらに増やしてモデルのシミュレーションのスループットを向上させることができます。
関数
ブロック
Dataflow Subsystem | Subsystem whose execution domain is set to Dataflow |
トピック
展開
- 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 thedspunfold
function to generate a multithreaded MEX file from a MATLAB® function using unfolding technology. The MATLAB function can contain an algorithm which is stateless (has no states) or stateful (has states). - Signal Processing Algorithm Acceleration in MATLAB
Accelerate signal processing algorithm withcodegen
anddspunfold
. - How Is dspunfold Different from parfor?
This page should detail the users on when to use dspunfold and when to use parfor.
データフロー
- 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. This tab consolidates multicore analysis techniques leveraged in dataflow into an incremental and iterative workflow.
トラブルシューティング
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.