burnup calculation problem

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burnup calculation problem

Postby j0937065063 » Tue Jun 12, 2018 12:22 am

Hello

I am trying to do a single 2D PWR fuel assembly model with ~200 nuclide tracing and about 40 time steps.

It gives me the following error:

- MPI task = 0
- OpenMP thread = 2
- RNG parent seed = 1528751737
- RNG history seed = 5450987530234881657

Fatal error in function TTALoop:

Max length of TTA chain exceeded.


Simulation aborted.

I try to change the nbuf to higher value, but still it gives me the same error somehow.

Is it something to do with memory allocation?

Thanks!


Best,
Vince
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Re: burnup calculation problem

Postby Jaakko Leppänen » Wed Jun 13, 2018 5:47 pm

Which Serpent version are you using?
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Re: burnup calculation problem

Postby j0937065063 » Wed Jun 13, 2018 6:48 pm

I am using 2.1.30.
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Re: burnup calculation problem

Postby j0937065063 » Wed Jun 13, 2018 6:49 pm

Also I am running it on a Mac OSX High Sierra machine using the -omp option.

I am not sure if it has something to do with that, but just provide the information for diagnostic.
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Re: burnup calculation problem

Postby Jaakko Leppänen » Thu Jun 14, 2018 2:58 pm

Could you send me the input?
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Re: burnup calculation problem

Postby j0937065063 » Thu Jun 14, 2018 4:21 pm

I just send the model to you.

Thanks!
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