Locate source of Simulation Target diagnostics
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PJ
on 5 Nov 2025 at 22:02
When I run my Simulink model for the first time, I see diagnostics printed like VarDim N, SF Y, concat N, TLC YVarDim N, SF Y, concat N, TLC YVarDim N, SF Y, concat N, TLC Y. I am running in accelerator mode. I have found similar text printed in this example, but the example does not give context behind the diagnostics. The common file I have found containing the text VarDim is the codedescriptor.dmr file. What is the source of the diagnostic? How can I disable it?
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Leepakshi
on 12 Nov 2025 at 9:26
Hi,
This is an expected behaviour. The diagnostic messages such as VarDim N, SF Y, concat N, TLC Y that appear when running your Simulink model in accelerator mode are internal status outputs generated by Simulink Coder during code generation and simulation. Their appearance is not explained in the example documentation.
You can try updating MATLAB/Simulink to a newer version where such verbose diagnostics may have been removed. For a permanent fix, contact MathWorks support on below link:
Hope this helps!
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