Node description error

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RWTH_FCN
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Posts: 148
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Vensim version: DSS

Node description error

Post by RWTH_FCN »

Hi,

I have implemented new feature to my model but when I run it after completion of compiling process, I encounter with "floating point overflow-saving to time 167.000" error, but in command these errors are visible:

ERROR: line 195 of input - wrong value of parameters in the arc line.
ERROR: line 1 of input - node descriptions must be before arc descriptions.

How can I understand from which part of model this floating point overflow error is stemmed, considering two additional errors?
Best Regards,
Administrator
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Re: Node description error

Post by Administrator »

Is this from Vensim? I don't recognize the errors at all.
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RWTH_FCN
Senior Member
Posts: 148
Joined: Wed Feb 08, 2017 9:10 am
Vensim version: DSS

Re: Node description error

Post by RWTH_FCN »

Administrator wrote: Wed Oct 17, 2018 2:43 pm Is this from Vensim? I don't recognize the errors at all.
I have attached the error. My model has some external functions but its compiling process goes well and this error comes, when Vensim is simulating.
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node description2.jpg
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Administrator
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Re: Node description error

Post by Administrator »

If you search the source code of the external functions, do you see anything like "node descriptions"?

I've never seen those before, and they mean nothing to me. And searching the Vensim source code gives no match on "node descriptions". It looks like some custom code that reads in something with arcs and nodes (whatever they are).
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RWTH_FCN
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Posts: 148
Joined: Wed Feb 08, 2017 9:10 am
Vensim version: DSS

Re: Node description error

Post by RWTH_FCN »

Administrator wrote: Fri Oct 19, 2018 7:03 am If you search the source code of the external functions, do you see anything like "node descriptions"?

I've never seen those before, and they mean nothing to me. And searching the Vensim source code gives no match on "node descriptions". It looks like some custom code that reads in something with arcs and nodes (whatever they are).
Yes. this error is related to my compiler(C++). As I have not still solved this error, I would like to ask you another question regadring error monitoring in Vensim. Some of my variables with Auxilary type should get amount for all time steps, but when I trace its components with table it gets value only for the first time step. Do you have any suggestion that which parts have to be checked. As you can see in the picture, those three variables(red boxes) get no value for further time steps and creat " floating point overflow" error.
Best Regards,
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table.png
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Administrator
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Re: Node description error

Post by Administrator »

RWTH_FCN wrote: Tue Oct 23, 2018 2:18 pmYes. this error is related to my compiler(C++).
Vensim cannot report any errors with your external functions, and you need to ensure that they are well behaved. Just because they compile, that does not mean they work.

If you are missing values for aux variables, that looks like something is overwriting memory that it should not. The most likely cause in this case is the external functions, and there is nothing we can do to help you debug those.
Advice to posters seeking help (it really helps us to help you)
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