model running slightly differently in Veristand and in Simulink

[Lbgc]

Hello,

I have a model containing a c-code s-function.

The model runs fine in Simulink, where the s-function is also compiled to a mexw32. 

Then a dll is generated for Veristand 2011, using RTW and the veristand.tlc.

In Veristand, the results are the same as in Simulink. But at some point in time, I have a numerical error in the s-function due to a non-convergence of the solver. (the s-function has its own fixed-step solver inside). This error does not shows up in Simulink with the mexw32 s-function.

I tried to run this dll both on Windows deployment mode and in pharlap deployment on a PXI. I have the same results about the numerical non-convergence, so the problem seems to be in the way the dll is compiled.

What could be the reason for a different behavior in Simulink and in Veristand ?

Any suggestions ?

thanks.

[R.Kaszubiak]

Hi.

In fact, sometimes function are not full functionnal when the model is compiled.

You could avoid use s function

[GSinMN · Accepted solution]

I see that the original post is pretty old, and that it may have already been solved, but my team has been working through similar problems for a few months.  First thing to check would be version compatibility.  Keep in mind that even up to NIVS 2012, only RTW 2008 is officially supported. 

GSinMN