Effect of using masked subsystem on simulation speed?

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Jagmohan singh 2012-8-2

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Hello In my simulink model I am using a number of masked blocks. Each block based on their parameter and connection modifies itself. I want to know that how the simulation speed can be affected by using such masked subsystem inside the model.

Thanks

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Kaustubha Govind 2012-8-2

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AFAIK, the only effect of masks on simulation performance is that at initialization time, block dialog parameters are first evaluated in the mask workspace (if using mask workspace variables in the dialog). Initialization happens once at the start of simulation time and every time you Update Diagram (Ctrl+D) during simulation.

Are you seeing any runtime overhead?

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Jagmohan singh 2012-8-6

Actually initialization time is very less compared to run time in my case. So I could see it is the simulation time. Here I applogize for my mistake that I didn't look at the s-function properly in both cases. it was the matlab s-funtion in one case and C-Mex in another case. Now I have converted it into C-Mex now I see simulation time is of the same order for both the cases.