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Old   July 28, 2014, 07:18
Default Problem with compiled UDFs
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Hello guys,

I'm using Fluent 15.0 on Windows XP 64 Bit with MS Visual Studio C++ 2008 Express and MS .net Framework 2.0 (64 Bit).

My problem is, that fluent can compile my UDFs without errors, but it seems to me that fluent doesn't execute them, it does not make a difference whether I start my simulation after compiling or without.
But if I try to compile a UDF with errors (e.g. forgot a semicolon), an error message is displayed in the console. Therefore I think the compiler works. I changed the system-variable "path" how it is explained in

http://www.cfd-online.com/Wiki/Fluen...with_Fluent_13

Subsection: "How can I manage to compile my UDF with Windows 7 64bit?"

If I just write a little UDF to print something on console, nothing will be displayed. My code:

#include "udf.h"

DEFINE_ADJUST(ausgabe,d)
{
Message("test");
}

I hope somebody can help me.

Regards
Nils
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Old   July 28, 2014, 10:46
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Can you compile the code
Code:
DEFINE_ON_DEMAND(test)
{
     Message("test");
}
And then select in the menu Define->User-Defined->Execute On Demand, select "test" and see if something comes up on the screen?
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Old   July 30, 2014, 04:18
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Hello,

I just tested it and nothing comes up on the screen.

Regards
Nils
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Old   July 30, 2014, 05:15
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Quote:
Originally Posted by nilsstudent View Post
Hello,

I just tested it and nothing comes up on the screen.

Regards
Nils
Surely something must have shown up on the screen when you compiled it???

My screen shows:
Quote:
Copied D:\test/test.c to test\src
udf_names.c and user_nt.udf files in 3d are upto date.
(system "copy "c:\PROGRA~1\ANSYSI~1\v150\fluent"\fluent15.0.7\sr c\makefile_nt.udf "test\win64\3d\makefile" ")
1 file(s) copied.
(chdir "test")(chdir "win64\3d")
Done.
Don't you see something like that?
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Old   July 30, 2014, 05:30
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Yes,

after Building:

Setting Post Processing and Surfaces information ... Done.
Copied E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent/E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent est.c to libudf\src
udf_names.c and user_nt.udf files in 3ddp_host are upto date.
(system "copy "E:\PROGRA~1\ANSYSI~1\v150\fluent"\fluent15.0.0\sr c\makefile_nt.udf "libudf\win64\3ddp_host\makefile" ")
1 file(s) copied.
(chdir "libudf")(chdir "win64\3ddp_host")udf_names.c and user_nt.udf files in 3ddp_node are upto date.
(system "copy "E:\PROGRA~1\ANSYSI~1\v150\fluent"\fluent15.0.0\sr c\makefile_nt.udf "libudf\win64\3ddp_node\makefile" ")
1 file(s) copied.
(chdir "libudf")(chdir "win64\3ddp_node")
Done.

After Loading:

Opening library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf"...
Library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf\win64\3ddp_ho st\libudf.dll" opened
Opening library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf"...
Library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf\win64\3ddp_no de\libudf.dll" opened
Opening library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf"...
Library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf\win64\3ddp_no de\libudf.dll" opened
Opening library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf"...
Library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf\win64\3ddp_no de\libudf.dll" opened
Opening library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf"...
Library "E:\Documents and Settings\Student\Desktop\Simulation\Shell\particle Tracking_files\dp0\FFF\Fluent\libudf\win64\3ddp_no de\libudf.dll" opened
test
Done.

Did you mean this?
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Old   July 30, 2014, 05:44
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And

test::libudf

is visible at the "execute on demand"-window, but nothing happens after clicking.
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Old   July 30, 2014, 06:05
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Strange: for me it also does not show on the screen.

However, when I replace it by
Code:
Message("test%d\n",0);
something shows...
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Old   August 4, 2014, 04:46
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Hi,

now this shows up:

test0
test0
test0
test0
test0

So obviously the compiler works.

But when I change it to:

#include "udf.h"

DEFINE_EXECUTE_AT_END(test)
{
Message("test%d\n",0);
}

There's not the output on the console.
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Old   August 6, 2014, 10:35
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Does somebody know, why there are 5 "test"-outputs although I executed the UDF only once?
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Old   August 6, 2014, 10:43
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That is because you are running in parallel, so 5 instances of your udf are loaded (one for the host, and 4 for the nodes if I am correct). If you want to see it only once, replace "Message" by "Message0".
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Old   August 6, 2014, 10:45
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Oh, thank you
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