[TRNSYS-users] Fwd: Invalid floating point operation

[David BRADLEY]

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
> M: +30 697 6094 653 <tel:+30+697+6094+653>
>
> S: ma_kats <https://mysignature.io/redirect/skype:ma_kats?chat>
> E: makatstuc at gmail.com
>
>
>
>
> _______________________________________________
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> TRNSYS-users at lists.onebuilding.org
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-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
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