Problem with Exodus output file of MSRE of Moltres Getting started

[gamma-spectrum]

Dear all,

I have Moltres (version 2025.09.02) within a MOOSE installation (version 2025.09.04) and I'm currently following the tutorial Introduction to the Moltres Input File Syntax and I'm in section Introduction to the Moltres Input File Syntax.

I have launched my compiled version of Moltres following the instructions of the web page

cd projects/moltres/tutorial/eigenvalue
../../moltres-opt -i nts.i > nts.output

After inspecting the messages sent to standard output (in file nts.output) it seemed that simulation finished correctly. As example, within Postprocessor Values k_eff was 1.013509.

However, when I open the Exodus file (nts_exodus.e) with latest ParaView version (6.0.1) results are not correct, like if values in mesh were filled with random numbers. In order to check the results, I have found the old Moltres tutorial of this case as well as the results in a previous GitHub version. Within this repository, Exodus file is auto_diff_rho.e and it is stored in folder moltres/tests/twod_axi_coupled/gold.

While first figure belongs to the reference case (file auto_diff_rho.e) and it shows the values of first precursors group

second figure belongs to my simulated case (file nts_exodus.e) and values of first precursors group are not shown

Input and output files are shared within this GitHub Gist link.

Kind regards,
Juan García

[smpark7]

Hello, your exodus results should be fine if you switch to the latest timestep. The tool bar at the top of your paraview shows that you're looking at time=0. For auto_diff_rho,e, the simulation only outputs the final solution. For nts_exodus.e, it outputs the initial and final states. pre1=4.4e-07 is effectively pre1=0 at the initial state.

[gamma-spectrum]

Dear Sun Myung,

You are right. On top of ParaView there is the Time box to choose the time step to represent the data, as it can be seen in this picture.

Thank you very much.

Kind regards,
Juan García