Simulink rapid acceleration creates temp files which fill drive

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schapplm 2013-12-3

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https://ww2.mathworks.cn/matlabcentral/answers/108407-simulink-rapid-acceleration-creates-temp-files-which-fill-drive

回答： schapplm 2013-12-5

I set up a parfor-loop which simulates a Simulink-model, like in this tutorial: http://www.mathworks.de/de/help/simulink/examples/rapid-accelerator-simulations-using-parfor.html

It works great and fast, but each Sim Command executes a exe-File which writes the Simulation output (tout, yout) to a temp file like "oup5ec41494_5f3b_4a75_8e18_0978da1bc809.mat" in the "slprj\raccel\modelname"-folder.

The file is being deleted after evaluation, but only to windows trash, so after thousands of iterations (I use the parfor loop in a genetic algorithm), my hard disk drive is full (after creating 160GB temp files). Is there a possibility, to make matlab delete the temp files without trash?

I am using Matlab 2012b with Windows 7 x64.

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Answer 1

schapplm 2013-12-5

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https://ww2.mathworks.cn/matlabcentral/answers/108407-simulink-rapid-acceleration-creates-temp-files-which-fill-drive#answer_117362

In Matlab 2013a, the problem seems to be solved.

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Answer 2

Ryan G 2013-12-4

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https://ww2.mathworks.cn/matlabcentral/answers/108407-simulink-rapid-acceleration-creates-temp-files-which-fill-drive#answer_117246

在 MATLAB Online 中打开

What's your parfor loop look like? You might be able to do something like

parfor i = 1:100
    eval(['myOutput' num2str(i) ' = sim(gcs)']) 
    %Not sure exact syntax, try not to use eval if possible
    % Process algorithm here
    delete(['myOutput' num2str(i)])
  end

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schapplm 2013-12-5

在 MATLAB Online 中打开

using the eval function does not help, because the temp file is generated outside matlab in the model-.exe-file that is generated by the rapid accelerator. So i cannot delete the temp-file in Matlab either, since it is deleted to recycle bin by the model.exe.

% Build the Rapid Accelerator target (create .exe-file)
rtp = Simulink.BlockDiagram.buildRapidAcceleratorTarget(sl_Modellname);
parfor i=1:100
    parameterSet = Simulink.BlockDiagram.modifyTunableParameters(rtp, ...
        'EKF_Q', EKF_Q, 'EKF_P0', EKF_P0); % modify some parameters
    simOut= sim(sl_Modellname, ...
            'SimulationMode', 'rapid', ...
            'RapidAcceleratorUpToDateCheck', 'off', ...
            'RapidAcceleratorParameterSets', parameterSet);
    % calculations with simOut
    % ...
end