CFD Online Discussion Forums - Problem opening vtu-file in Paraview

I had the same issue from my LES results. So I generated my small size vtk from restart.dat file in MATLAB because my system freeze whenever I tried opening .vtu files from LES data dumped from SU2 code. So may be its just issue with code.

Quote:

Originally Posted by Situla (Post 774343)

Hello!

So I have been struggling for a while now trying to open my vtu files in Paraview. The error I get is this:

ERROR: In C:\bbd\ecd3383f\build\superbuild\paraview\src\VTK\ IO\XML\vtkXMLUnstructuredDataReader.cxx, line 657 vtkXMLUnstructuredGridReader (0000024E05BE8EC0): Cannot read cell connectivity from Cells in piece 0 because the "offsets" array is not monotonically increasing or starts with a value other than 0.

I obtained this vtu file by running CFD_SOL on my solution_flow.dat, which I again obtained from renaming the restart_flow.dat that is written at the end of the simulation.
This is the second (and very small) of four vtu files of a multi-physics problem (gas flow past three warm cylinders).
Most sense I can make of the error is by opening the vtu file in Notepad++, where I found these three lines:
<Cells>
<DataArray type="Int32" Name="connectivity" NumberOfComponents= "1" offset="1816" format="appended"/>
<DataArray type="Int32" Name="offsets" NumberOfComponents= "1" offset="3452" format="appended"/>

I am not sure if this "offset" variable is the same as in the error message, but it is clearly not 0.
This is my first multi-physics SU2 simulation, so I am not very experienced with how to deal with this.

I have attached the entire vtu-file and the mesh file.

Thank you for your time!
Martin

Edit: Above error appears with Paraview 5.8.0. I have tried opening this same exact file in Paraview 5.6.1, where I find a similar yet different error:

ERROR: In C:\bbd\ecd3383f\build\superbuild\paraview\src\VTK\ IO\XML\vtkXMLUnstructuredDataReader.cxx, line 616 vtkXMLUnstructuredGridReader (000001D73D38B500): Cannot read cell connectivity from Cells in piece 0 because the "offsets" array is not monotonically increasing or starts with a value less than 1.

What strikes me as bizarre is that in this version, Paraview seems to expect an array starting value > 0, whereas in the newer version, it seems Paraview would accept ONLY 0 as starting value. Clearly, there is not a value that can satisfy both conditions, which raises two questions: What value does it really need to be, and what value does my file have?

Edit2: added MWE