Parfor in simulink linearization

Question

Alberto Mora 2017-10-26

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https://ww2.mathworks.cn/matlabcentral/answers/363368-parfor-in-simulink-linearization

评论： Hugo Fournier 2023-2-13

I need to compute a huge amount of bode analysis of a system. For this reason, from my script I have a for loop where I linearize my Simulink model, and after that I estimate the bode diagram (frequency response function - FRF). Considering that complessive computational time is quite big, is there a possibility to run this analysis in parallel mode to reduce the computational time? I tried to do it: the problem is that when one worker run a linearization of the model and at the same time another worker run the linearization of the next iteration, the second "linearization" is invalid because the first is running.

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Hugo Fournier 2023-2-13

Hi Alberto,

I have a similar issue trying to linearize several models with Matlab. I have read https://www.mathworks.com/help/slcontrol/ug/batch-linearization-using-linearize.html?s_tid=srchtitle, but there are two main limitations to this approach

1) There does not seem to be a way to perform the batch computations with parallel computation, and the parfor loop does not help either

2) The grids of parameters only includes variations of scalars, not more complicated objects

I would be very interested if someone found a solution to these issues

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Answer 1

Alberto Mora 2017-12-12

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https://ww2.mathworks.cn/matlabcentral/answers/363368-parfor-in-simulink-linearization#answer_295886

编辑：Alberto Mora 2020-11-5

I found the solution at this (<- removed page) or this reference.

In my own case, the reduction of computational time is about -35%.

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Deukwon Ko 2020-11-5

Can I ask what did you use the command?

Alberto Mora 2020-11-5

It seems that the page I wrote was deleted from Mathworks website. Anyhow, have a look to https://www.mathworks.com/help/slcontrol/ug/batch-linearization-using-linearize.html?s_tid=srchtitle or to other articles in the Matwoks website: there are many suggestion about that. Just choose the correct word for the research.

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Answer 2

Edric Ellis 2017-10-30

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https://ww2.mathworks.cn/matlabcentral/answers/363368-parfor-in-simulink-linearization#answer_288482

Perhaps you can use parsim - this makes it simpler to run Simulink simulations in parallel. As well as the reference page, there is a more detailed example here.

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Alberto Mora 2017-10-30

编辑：Alberto Mora 2017-10-30

Dear Mr Edric Ellis, I am not sure that is the answer, because I do not run time-simulation, but I just evaluate Frequency Response Function. According to your link, parsim comand is referred to time-simulation.

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