Floating point error source not being shown

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damani
Junior Member
Posts: 3
Joined: Sun Feb 07, 2021 4:46 pm
Vensim version: PRO

Floating point error source not being shown

Post by damani »

In my sensitivity run, I get the message shown below. Problem is it does not tell me the variable whose computation is giving this error.

Floating point error at time 24 - filling with NA
with sensitivity parameters:
Zone 1 elevation = 431.643
Double cropped land Trad init = 217.139
Rainfall variation from normal for sensitivity = 1.10768
Area2 = 533.049
Bandhara 2 capacity = 328.077
Price sensitivity multiplier = 0.901749
Conductivity = 38.8466
Floating point error at time 37 - filling with NA
****and so on*****
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saveList1.lst
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SDPaperModel0502v4.mdl
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tomfid
Administrator
Posts: 3806
Joined: Wed May 24, 2006 4:54 am

Re: Floating point error source not being shown

Post by tomfid »

You can use the parameters shown to rerun a single run that will expose the problem.
damani
Junior Member
Posts: 3
Joined: Sun Feb 07, 2021 4:46 pm
Vensim version: PRO

Re: Floating point error source not being shown

Post by damani »

Sure. But please take it as a feature request. Simulator already knows the information - it can easily show it at that point. Often just by knowing the variable and looking at the formula, one will know what went wrong. Thanks,
tomfid
Administrator
Posts: 3806
Joined: Wed May 24, 2006 4:54 am

Re: Floating point error source not being shown

Post by tomfid »

It may not be known, because optimization and sensitivity runs preserve less information for the sake of speed, but I agree that this is a useful request. I'll see what's possible.
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