[dsn]

Hi everyone,

I have modified and implemented a new turbulence model in openfoam and compiled the library succesfully. I have also used the turbulence model without any problem on a single processor. But when i try to decompose the domain and run it in parallel, I get the follwing error

Processor 1
    Number of cells = 6473
    Number of faces shared with processor 0 = 100
    Number of faces shared with processor 3 = 67
    Number of processor patches = 2
    Number of processor faces = 167
    Number of boundary faces = 13109
--> FOAM Warning : 
    From function dlOpen(const fileName&, const bool)
    in file POSIX.C at line 1179
    dlopen error : /home/aditya/OpenFOAM/aditya-2.3.0/platforms/linux64GccDPOpt/lib/libmyIncompressibleRASTransitionModel.so: undefined symbol: _ZTIN4Foam14incompressible8RASModelE
--> FOAM Warning : 
    From function dlLibraryTable::open(const fileName&, const bool)
    in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 99
    could not load "libmyIncompressibleRASTransitionModel.so"

The name of the library is ""libmyIncompressibleRASTransitionModel.so". Is there anything extra that needs to be done when you implement your own model to make it run in parallel. It would be great if someone can help me out with this.

Thanks in advance!!

[ybapat]

Hello,
Add line
libs ("libmyIncompressibleRASTransitionModel.so");
to controlDict file so that decomposepar is able to load your library.

Regards,
-Yogesh

[adityadsn]

Hi,

I do have that line in my control dict. It works perfectly when i run the case in serial but when i try to run it in parallel it gives me the error. when i use the decomposePar command, i get the above mentioned error.

[wyldckat]

Quick answer: Change the line:

libs   ("libmyIncompressibleRASTransitionModel.so");

To possibly this:

libs   (
"libmyIncompressibleRASTransitionModel.so"
"libincompressibleRASModels.so"
);

Because of this error:

undefined symbol: _ZTIN4Foam14incompressible8RASModelE

This error doesn't happen with the solver, because the solver already is linked to this library for the RAS models.

[dsn]

Thank you so much wyldkat. That worked!!

But I'm a little curious because this worked

libs ("libincompressibleRASModels.so" "libmyIncompressibleRASTransitionModel.so" "libfindroot.so"  );

but this did not. It gave me an error.

libs ( "libmyIncompressibleRASTransitionModel.so" "libfindroot.so" "libincompressibleRASModels.so" );

Can you tell me why this happens and why do we need to link the libincompressibleRAS.so in the first place while running user defined turbulence models.

Regards,
Aditya

[wyldckat]

Originally Posted by dsn

Can you tell me why this happens and why do we need to link the libincompressibleRAS.so in the first place while running user defined turbulence models.

Quick answer: I thought it was pretty obvious that your library "libmyIncompressibleRASTransitionModel.so" depends on this symbol:

undefined symbol: _ZTIN4Foam14incompressible8RASModelE

And this symbol is defined in the library "libincompressibleRASModels.so".
Unfortunately I was in a hurry and didn't think about the loading priority, namely that we must first load the library that has the symbol we need, so that we can load our own library.

[makayasa]

Hi all,
after running paraFoam, in the terminal to get a message like this.

From function dlOpen(const fileName&, const bool)
in file POSIX.C at line 1179
dlopen error : /home/yasa/OpenFOAM/yasa-2.3.0/platforms/linuxGccDPOpt/lib/libmyIncompressibleRASModels.so: undefined symbol: _ZTIN4Foam14incompressible8RASModelE

FOAM Warning :
From function dlLibraryTable:pen(const fileName&, const bool)
in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 99
could not load "libmyIncompressibleRASModels.so"

How to fix it? Please help, this is my final assignment

[Newuser10]

Hello guys,

I got same message but after I run the solver "pisoFoam" .... the message was:

pisoFoam: symbol lookup error: /.../..../OpenFOAM/......-2.1.0/platforms/linux64GccDPOpt/lib/libincompressibleRASModels.so: undefined symbol: _ZTIN4Foam14incompressible8RASModelE

I do not know how to solve!!!!!! any idea ??

Thanks a lot ..
Sami

[potentialFoam]

Dear Sami,

seems as if the same library is not linked.
Can you please post your controlDict-file?

Peter

[geth03]

Originally Posted by Newuser10

Hello guys,

I got same message but after I run the solver "pisoFoam" .... the message was:

pisoFoam: symbol lookup error: /.../..../OpenFOAM/......-2.1.0/platforms/linux64GccDPOpt/lib/libincompressibleRASModels.so: undefined symbol: _ZTIN4Foam14incompressible8RASModelE

I do not know how to solve!!!!!! any idea ??

Thanks a lot ..
Sami

you didnt link the missing lib correctly, obviously there is some link missing.
after you add it you need to compile once again.