Unwanted model reference SIM target rebuilds

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Hi,
I have gone through this article about rebuilding models for simulations-
My integration model references many models that are set up in accelerated mode with rebuild set to 'if any changes detected'. This works for some time and I have rapid compile times, but when i come back to this model the next day, with the cache files and folder location intact, and press play without making any changes, it triggers a rebuild of all models. Is time also a factor in deciding whether to rebuild? This takes a lot of unnecessary time and I am positive the content of the files or solver or data hasn't changed. Any tips appreciated, thanks!

Answers (1)

Jonathan Agg
Jonathan Agg on 6 Apr 2022
Edited: Jonathan Agg on 6 Apr 2022
This documentation page provides ideas for investigating why a model reference gets rebuilt: https://uk.mathworks.com/help/simulink/slref/determining-why-simulink-accelerator-is-regenerating-code.html
The first step it recommends is to show more information in the Diagnostics Viewer:
set_param(model,'AccelVerboseBuild','on')
In this case, it will explain why a model reference target has been rebuilt. It's typically because the model or one of its dependencies has been changed in a structural way.
If you would like more help, please get in touch with our tech support team: https://uk.mathworks.com/support/contact_us.html.

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