Concurrent Execution on Simulink® Real-Time™

This example uses:

This example shows how to apply explicit partitioning to enhance concurrent execution of a real-time application that you generate by using Simulink Real-Time.

Simulink Real-Time supports concurrent execution by using implicit partitioning or explicit partitioning of models. This example shows the relationship between the explicit partitioning of the tasks in the model subsystems and the execution of tasks by using the Simulink Real-Time profiling tool.

The example modelslrt_ex_mds_and_tasksruns at sample rate of 0.001 second.

To run the model with adjusted sample rate of 0.01 second, change the sample rated before running the example. In the MATLAB Command Window, type:

Ts = 0.01;

Open, Build, and Download the Model

The explicit partitioning in the top-level model occurs in subsystem1.

open_system(fullfile(matlabroot,'toolbox','slrealtime','examples','slrt_ex_mds_subsystem1'));

The explicit partitioning in the top-level model occurs in subsystem2.

open_system(fullfile(matlabroot,'toolbox','slrealtime','examples','slrt_ex_mds_subsystem2'));

Open the modelslrt_ex_mds_and_tasks. The model is mapped to seven threads:Model1_R1,Model1_R2,Model1_R3,Model1_R4,Model2_R1,Model2_R3, andModel2_R4.

These threads run at sample rates ofTs,2*Ts,3*Ts,4*Ts,Ts,3*Ts, and4*Ts.

model='slrt_ex_mds_and_tasks'; open_system(fullfile(matlabroot,'toolbox','slrealtime','examples',model));

应用明确的分区,在仿真软件金宝appitor, on theReal-Timetab, clickHardware Settings, and then selectSolver>Configure Tasks. Select theTasks and Mappingnode.

Build, download, and run the model.

set_param(model,'RTWVerbose','off'); evalc('slbuild(model)'); tg = slrealtime; load(tg,model);% Open TET MonitorslrtTETMonitor;% Start profiler on the target computerstartProfiler(tg); start(tg); pause(2); stop(tg);

Display Profiling Data

The profiling data shows the execution time of each thread on a multi-core target computer.

profData = tg.getProfilerData; profData.plot;

Processing data on target computer ... Transferring data from target computer ... Processing data on host computer ...

View TET Information in TET monitor

View TET Information in the Simulation Data Inspector

Close the Model

bdclose('all');