[JeroenH]

I am working with ANSYS Fluent 18.2 and VS2015 and when I try to build & load my UDF i get the following error:

The UDF library you are trying to load is not compiled for 3d on the current platform (win64).

It then says the system cannot find the file...

Now I have worked with UDFs before in a newer version of Fluent and I was able to resolve this issue back then by changing the path in Windows. This time however it was not my solution.

I found that when building the UDF it does not seem to complete the process. The message is as follows:

Copied C:\Users\Lex\Documens\RIFT\CFD_Combustion_Model\UD Fs est.c to libudf\src
user_nt.udf is outdated. So, recreating the file for 3d ...
(chdir "libudf\win64\3d")(system "copy "C:\PROGRA~l\ANSYSI~l\v182\fluent"\fluent18.2.0\sr c\udf\makefile_nt.udf "libudf\win64\3d\makefile" ")
1 file(s) copied.
(chdir "libudf")(chdir "win64\3d")# Generating ud_iol.h

Done.


In previous versions this message seemed more extensive. I started Fluent in parallel mode.

Anyone got a clue what the problem might be?


Thanks in advance

Jeroen

[pakk]

It has helped me in the past to remove the libudf folder before compiling. I don't know why...

[JeroenH]

I have tried this, but it has not resolved my issue. I think the problem is that not all files that should be generated are in the libudf folder. I don't know why it does not complete the build process of my UDF.

When I start the VS2015 command prompt and type 'cl' in the fluent directory I also get the following message: 'cl' is not recognized as an internal or external command.

[Gemini_WANG]

Hi,

Have u tried to set up compiling environment with the settings in the Environment tab of the Fluent Launcher?

[pakk]

Is your filename really "Fs est.c" including a space?

[JeroenH]

Originally Posted by pakk

Is your filename really "Fs est.c" including a space?

No it does not contain any spaces, i don't know why it looks that way on the forum.

[JeroenH]

Originally Posted by Gemini_WANG

Hi,

Have u tried to set up compiling environment with the settings in the Environment tab of the Fluent Launcher?

Yes, and it seems correct because the libudf folder is also being generated in the correct place.

[AlexanderZ]

remove libudf, in fluent press build and show compilation log here

[JeroenH]

This is what's in the log file:

'cl' is not recognized as an internal or external command,
operable program or batch file.
NMAKE : U1077: 'cl' : return code '0x1'
Stop.

It also shows there is a 'cl' error as mentioned before.

[Yasser]

this is environmental settings issue. It has nothing to do with the UDF

[JeroenH]

I am aware, but how do I fix this?

[Gemini_WANG]

Originally Posted by JeroenH

I am aware, but how do I fix this?

emmm... could u post a screen capture of the Environment tab of the Fluent Launcher?

[AlexanderZ]

are you running fluent from Visual Studio console?

if doesn't help:
you may reinstall Visual Studio on your machine,
there are a bunch of threads on forum according to NMAKE issue
old solution:
https://www.cfd-online.com/Wiki/Flue...UDF.29_Related

[JeroenH]

Originally Posted by Gemini_WANG

emmm... could u post a screen capture of the Environment tab of the Fluent Launcher?

I set it up in parallel:

Knipsel.PNG

[umeralizuberi]

use ansys 2021 r1, it has built-in compiler

[JeroenH]

Originally Posted by AlexanderZ

are you running fluent from Visual Studio console?

if doesn't help:
you may reinstall Visual Studio on your machine,
there are a bunch of threads on forum according to NMAKE issue
old solution:
https://www.cfd-online.com/Wiki/Flue...UDF.29_Related

I have already reinstalled Visual Studio 2015 twice, including the C++ package which is not installed by default as mentioned here: https://stackoverflow.com/questions/...not-recognized

I also added a path in the advanced system settings such that Fluent should be able to find VS 2015:

%SystemRoot%\system32;%SystemRoot%;C:\Program Files(x86)\Microsoft Visual Studio 14.0\Common7\Tools;C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin;C:\Program Files\ANSYS Inc\v182\fluent\ntbin\win64;

[JeroenH]

After reinstalling a third time I managed to compile and load my UDF. However, it still only works when I start Fluent via the x86_x64 cross tools command prompt.

When I start fluent via the workbench it still does not work. Any suggestions on how to fix this?

[Gemini_WANG]

Originally Posted by JeroenH

I set it up in parallel:

Attachment 83846

Is Visual Studio also installed in C:\? If not, try to change the environment setup batch into something like (I'm not familiar with VS 2015)

"VS_DIR\2015\Community\VC\Auxiliary\Build\vcvarsall.bat" x86_amd64

(remember substitute VS_DIR with your VS installation directory! And if yes, u may have a try as well)

Perhaps Fluent launcher cannot execute the VS batch directly, u can establish a .bat file that contains command

call "VS_DIR\2015\Community\VC\Auxiliary\Build\vcvarsall.bat" x86_amd64

If it still doesn't work, try to execute the VS batch mentioned above and capture its output (for example, via Windows Command Prompt). Then manually set 3 variables - path, include and lib - in the blank column "Other Environment variables" according to the output.