Learning Forum

[rexfoxoloughlin]

Hi all,nI've solved my parallel use errors and now we have new ones!nnError: No source files provided nError Object: #fnError: UDF library libudf not available atnC:\ANSYS\Dragonfly_files\dp0\FFF\FluentnError Object: #fnnGoogle seems to have no answers for me, can anyone help?nThanksnn

[Amine Ben Hadj Ali]

Are you referring to a header or source in your UDF? Which version are you using? Paste some more information.

[rexfoxoloughlin]

.

DrAmine thanks for responding, I have VS 2017, ANSYS 2020 R2, I use #include "udf.h" in my UDF but the issue occurs when trying to build "libudf", before my codes even come into it.

.

[YasserSelima]

if you have a folder libudf inside fluent working folder, delete it and try to re-compile

[Rob]

In Windows use Unload before trying to recompile the C code. It's a safety feature in Windows as the libudf is technically open when loaded in Fluent: LINUX is intelligent enough to let you recompile without this step.

[rexfoxoloughlin]

Hi everyone, thanks for answering.
I've actually managed to fix it:
I had both VS2017 and VS2019 so I uninstalled 2019. I then updated 2017.
When trying to run ANSYS from the cross tools command prompt I got a load of errors saying certain files weren't installed, and when I googled them they seemed to be involved in some video games, so I installed the Video Game Development Framework (C++) to add to the desktop development environment I already had installed.
Fluent still wouldn't launch from the cross tools command prompt so I tried it from workbench and somehow, it worked.
Before this I was getting the "this isn't compiled for parallel use" error which I fixed by moving everything to the C drive.
Thanks to everyone who helped out!
Now just to fix my code...

[Shyam Prasad V Atri]

.

Is there a way to check if the C++ compiler is working for UDF.

I installed ansys 2021 r2 two days ago and my UDF's are not working.

I keep getting this warning.

scons: warning: No version of Visual Studio compiler found - C/C++ compilers most likely not set correctly

I am trying to use the inbuilt compiler.

.

[Rob]

.

The inbuilt compiler should bypass the VS Studio issues. What operating system are you using?

.

[Shyam Prasad V Atri]

.

I am using windows

.

[Rob]

.

/forum/discussion/23003/installing-vs-for-udfs#latest duplicate.

.

[Amine Ben Hadj Ali]

.

Just use the built-in compiler if Fluent does not enforce using it.

.