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If I run separate instances of Simulink, will set_param affect all instances?

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K E
K E 2012-3-28
When I use set_param to change a parameter, is the change local to that instance of the model, or is the changed value in effect if I open another concurrent instance of the model? I run parameter studies from a Matlab script which loads the Simulink model with load_system, changes a gain with set_param, but doesn't subsequenly save the changed model. To speed up the study completion, I start 4 instances of Matlab on my 4-core machine and run a separate instance of the script in each Matlab session. I want to make sure that changes with set_param are local and would not affect the other concurrent instances of the model.

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Kaustubha Govind
Kaustubha Govind 2012-3-28
As long as you don't save the changes to the model, it shouldn't affect any concurrent sessions.
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K E
K E 2012-3-28
Thanks Kaustubha. Once I am further along I will use the Parallel Computing toolbox for a more elegant approach, but glad to hear that I am not getting into trouble here.

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Sean de Wolski
Sean de Wolski 2012-3-28
I can't say with any certainty, but I wouldn't expect it to. I highly recommend that you check it!
Open two ML sessions, run it with the exact same configuration you are planning on using, and check the parameters in both sessions after.

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