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Re: [TRNSYS-users] Fwd: Invalid floating point operation



Manos,

  An invalid floating point error is a math error like dividing by zero or taking the log of a negative number somewhere in the code. It happens in parametric studies sometimes when an unrealistic combination of parameter values is being run. If such a problem occurs you can get the project (*.tpf) or the *.dck of that particular configuration in a parametric run and send it to your distributor so that they can find the spot in the code so as to better handle the error. It may be that the simulation will still generate an error and stop but it should not do so with such an unhelpful error as an invalid floating point error.

kind regards,

 David

 

On 12/8/2022 9:57 AM, Emmanouel Katsigiannis via TRNSYS-users wrote:
Dear fellow TRNSYS users,

I would like to raise the subject of "Invalid floating point operation", since going through the mailing list for earlier mentions on the matter did not really help.  
I've noticed that this error does not necessarily seem to be a component or input-dependent issue. 
For instance, when I run a single simulation with type56 and this error occurs, I rerun it without any differentiation and the simulation is completed successfully. Similarly, when I run a parametric simulation of many cases via TRNEDIT and this error pops up in a specific case, I rerun the single simulation successfully without changing anything.
I 've also tried several PCs, in case there is anyhow related to the operating system without concluding to any helpful outcome.

Any ideas/ comments/ suggestions on that?         

Best regards, 

Manos Katsigiannis
Energy and Sustainability Engineer, M.Sc.
Researcher | NTUA | School of Mechanical Εngineering

S:  ma_kats

 



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