Mesh reading error

[alexandre.lebouvier]

Hello everyone,

I just installed code saturne v 2.1.4 on Ubuntu and I got an error message when reading a mesh I used to use with previous versions. I tried another mesh I used before and I got the same error message even if the preprocessor seems to work fine :

/home/samuel/Code_Saturne_2.1/installer-214/installer/code_saturne-2.1.4/src/base/cs_io.c:697: Fatal error.

Error reading file: "/home/samuel/CFD_Plasma/PACS/STUDY/MESH/cathode.des".
File format is not the correct version.
The first 64 bytes expected contain:
"Code_Saturne I/O, BE, R0"
The first 64 bytes read contain:
""



Call stack:
1: 0x1e4e1c <bft_error+0x3c> (libbft.so.0)
2: 0x6d4e3e <+0x158e3e> (libsaturne.so.0)
3: 0x6d4fcd <cs_io_initialize+0x8d> (libsaturne.so.0)
4: 0x5f75ce <ledevi_+0x39e> (libsaturne.so.0)
5: 0x64bb35 <iniini_+0xac1> (libsaturne.so.0)
6: 0x64ce10 <initi1_+0x20> (libsaturne.so.0)
7: 0x5a7c22 <cs_run+0xc2> (libsaturne.so.0)
8: 0x5a7a80 <main+0x240> (libsaturne.so.0)
9: 0x4660113 <__libc_start_main+0xf3> (libc.so.6)
10: 0x8050a51 <> (cs_solver)
End of stack


Thanks,

Alex

[Yvan Fournier]

Hello,

This is strange. It seems as if in the GUI, you used "Import Meshes", instead "Use existing Mesh Input", but the GUI does not normally allow to select this.

So I would imagine either you forced the file name, or there is a bug in the GUI allowing you to make the wrong choice. In the Changelog for version 2.1, between 2.1.4 and 2.1.5, there is a fix entitled "Fix output format and input file path bugs in GUI mesh checking function.", so I would assume the second option.

So, importing the .des file is the way to go, and upgrading from 2.1.4 to 2.1.6 may avoid this issue and others.

Best regards,

Yvan

[alexandre.lebouvier]

I forgot to say that I don't use the GUI. I am not familiar yet with the new way to import mesh with the new scripts. I maybe have done sth wrong. I defined the path of my mesh in the cs_user_input_mesh routine and in 'domain.meshes=' of the launch script.

[Yvan Fournier]

Hello,

You do not need the "cs_user_input_mesh" function. By default, the code reads a file named "mesh_input" or all of the files in a directory with the same name, so this function is only for advanced uses, when for example you want to read multiple instances of a repeating pattern and translate them, and/or change mesh groups).

If you remove /empty this function, the meshes defined in domain_meshes should be used normally (i.e. imported as "mesh_input", then read by the code).

Regards,

Yvan

[alexandre.lebouvier]

That was the problem, it is working fine now. Once again, thank you very much Yvan.

Alex