Error: Transparency violation error.

Hi I have a mfile(mfileinmfile_trial.m) in which i am calling another mfile(for_example.m) which inturn runs 2 simulink models. I am using a for loop to run this simulation. Bute when i change the for loop to parfor loop i get these errors

"" Error using for_example (line 1)

Transparency violation error.

See Parallel Computing Toolbox documentation about Transparency.

Error in mfileinmfile_trial (line 5)

parfor i=1:q

Caused by:

    Error using clear

    Transparency violation error.

     See Parallel Computing Toolbox documentation about Transparency. ""

Can you please help out with the solution...

The code of "mfileinmfile_trial.m" is:

clear all

clc

q=1;

parfor i=1:q

%for i=1:q

    %parfor_example_WS;

    for_example;
end

Answer 1

[Edric Ellis]

Transparency violations occur when you try to add variables to the body of the PARFOR loop in a way that isn't clear from the text of the PARFOR loop. See this section of Loren's blog for some more details, or the documentation.

I presume 'for_example' is a script. This probably creates new variables - this is a transparency violation. Try making 'for_example' a function. To work with Simulink models, you may well need to

assignin('base', 'paramName', value)

so that Simulink can see the values.

There's more about running Simulink in parallel using parsim here.