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Old   August 20, 2021, 01:26
Default UDF loading error 126
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YADU KRISHNAN N
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Unable to load the UDF library after successful compilation using VS2019. Error is showing as
Opening library "D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf"...
Error at Node 0: Error code: 126
Error at host: Error code: 126
Error: Error code: 126\n
Error Object: #f
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Old   August 20, 2021, 01:37
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Are you sure there were no errors during compiling? People tend to miss the errors printed on the screen...

Is your UDF loading external modules? Are you doing something well beyond what's shown in the manual?
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"The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform" is NOT the error after compiling. It is the error after loading. To see compiler errors, look at your screen after you click "build".
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Old   August 20, 2021, 01:45
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A warning is shown as

"UDF_Tempgrad.c(17) : warning C4700: uninitialized local variable 't' used " after building. UDF is as given below.


#include "udf.h"
DEFINE_ADJUST(adjust_fcn,d)
{
Thread *t;
Thread *tf;
cell_t c;
face_t f;
real x[ND_ND];
real cell[ND_ND];
int n;
real wf;
real nc;
real temp;
real tempgrad ;
real Twall=100;
real delta;
begin_c_loop_all(c,t)
{
c_face_loop(c,t,n)
{
tf = C_FACE_THREAD(c,t,n);
if(THREAD_TYPE(tf) == THREAD_F_WALL)
{
f = C_FACE(c,t,n);
F_CENTROID(x,f,t);
wf = x[1];
C_CENTROID(cell,c,t);
nc = cell[1];
delta = wf-nc;
temp = C_T(c,t);
tempgrad= (temp - Twall)/delta ;
}
}


}
end_c_loop_all(c,t)


}
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Old   August 20, 2021, 04:06
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UDF Error at Node 0: Error code: 126
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Old   August 20, 2021, 06:07
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libudf and case file are located at same place. still geting error. Please see the complete console text.


> Copied D:\Project\CDmicro1_files\dp0\FFF-1\Fluent/D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\UDF_Tempgrad.c to libudf\src
(system "copy "C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluent 21.1.0\src\udf\sconstruct.udf "libudf\win64\2ddp_host\SConstruct" ")
1 file(s) copied.
(system "copy "C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluent 21.1.0\src\udf\scons_default.bat "libudf\win64\2ddp_host\scons_test.bat" ")
1 file(s) copied.
Creating user_nt.udf file for 2ddp_host ...
(system "copy "C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluent 21.1.0\src\udf\makefile_nt.udf "libudf\win64\2ddp_host\makefile" ")
1 file(s) copied.
(chdir "libudf")(chdir "win64\2ddp_host")
D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf\win64\2ddp_host>rem

D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf\win64\2ddp_host>rem Copyright 1987-2021 ANSYS, Inc. All Rights Reserved.

D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf\win64\2ddp_host>rem
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30133 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

usage: cl [ option... ] filename... [ /link linkoption... ]

Microsoft (R) Program Maintenance Utility Version 14.29.30133.0
Copyright (C) Microsoft Corporation. All rights reserved.

# Generating ud_io1.h
resolve.exe -udf ..\..\src\UDF_Tempgrad.c -head_file ud_io1.h
cl /c /Za /DUDF_EXPORTING /DUDF_NT /DWIN64 /EHa /wd4224 -I. -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\win64\2ddp_host -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\main -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\addon-wrapper -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\io -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\species -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\pbns -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\numerics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\sphysics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\storage -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\mphase -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\bc -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\models -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\material -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\amg -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\util -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\mesh -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\udf -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\ht -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dx -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\turbulence -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\acoustics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\parallel -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\etc -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\ue -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dpm -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dbns -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\cortex\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\client\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\tgrid\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\multiport\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\multiport\mpi_wrapper\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\inclu de ..\..\src\UDF_Tempgrad.c
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30133 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

UDF_Tempgrad.c
D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf\src\UDF_Tempgrad.c(17) : warning C4700: uninitialized local variable 't' used
# Generating udf_names.c because of makefile UDF_Tempgrad.obj
cl /c /Za /DUDF_EXPORTING /DUDF_NT /DWIN64 /EHa /wd4224 -I. -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\win64\2ddp_host -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\main -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\addon-wrapper -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\io -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\species -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\pbns -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\numerics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\sphysics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\storage -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\mphase -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\bc -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\models -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\material -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\amg -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\util -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\mesh -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\udf -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\ht -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dx -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\turbulence -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\acoustics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\parallel -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\etc -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\ue -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dpm -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dbns -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\cortex\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\client\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\tgrid\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\multiport\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\multiport\mpi_wrapper\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\inclu de udf_names.c
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30133 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

udf_names.c
# Linking libudf.dll because of makefile user_nt.udf udf_names.obj UDF_Tempgrad.obj
link /Libpath:"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent "\fluent21.1.0\win64\2ddp_host /Libpath:"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent "\fluent21.1.0\multiport\win64\net\shared /dll /out:libudf.dll udf_names.obj UDF_Tempgrad.obj mport.lib fl2110.lib
Microsoft (R) Incremental Linker Version 14.29.30133.0
Copyright (C) Microsoft Corporation. All rights reserved.

Creating library libudf.lib and object libudf.exp
(system "copy "C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluent 21.1.0\src\udf\sconstruct.udf "libudf\win64\2ddp_node\SConstruct" ")
1 file(s) copied.
(system "copy "C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluent 21.1.0\src\udf\scons_default.bat "libudf\win64\2ddp_node\scons_test.bat" ")
1 file(s) copied.
Creating user_nt.udf file for 2ddp_node ...
(system "copy "C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluent 21.1.0\src\udf\makefile_nt.udf "libudf\win64\2ddp_node\makefile" ")
1 file(s) copied.
(chdir "libudf")(chdir "win64\2ddp_node")
D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf\win64\2ddp_node>rem

D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf\win64\2ddp_node>rem Copyright 1987-2021 ANSYS, Inc. All Rights Reserved.

D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf\win64\2ddp_node>rem
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30133 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

usage: cl [ option... ] filename... [ /link linkoption... ]

Microsoft (R) Program Maintenance Utility Version 14.29.30133.0
Copyright (C) Microsoft Corporation. All rights reserved.

# Generating ud_io1.h
resolve.exe -udf ..\..\src\UDF_Tempgrad.c -head_file ud_io1.h
cl /c /Za /DUDF_EXPORTING /DUDF_NT /DWIN64 /EHa /wd4224 -I. -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\win64\2ddp_node -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\main -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\addon-wrapper -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\io -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\species -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\pbns -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\numerics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\sphysics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\storage -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\mphase -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\bc -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\models -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\material -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\amg -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\util -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\mesh -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\udf -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\ht -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dx -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\turbulence -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\acoustics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\parallel -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\etc -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\ue -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dpm -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dbns -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\cortex\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\client\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\tgrid\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\multiport\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\multiport\mpi_wrapper\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\inclu de ..\..\src\UDF_Tempgrad.c
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30133 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

UDF_Tempgrad.c
D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf\src\UDF_Tempgrad.c(17) : warning C4700: uninitialized local variable 't' used
# Generating udf_names.c because of makefile UDF_Tempgrad.obj
cl /c /Za /DUDF_EXPORTING /DUDF_NT /DWIN64 /EHa /wd4224 -I. -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\win64\2ddp_node -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\main -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\addon-wrapper -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\io -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\species -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\pbns -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\numerics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\sphysics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\storage -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\mphase -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\bc -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\models -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\material -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\amg -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\util -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\mesh -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\udf -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\ht -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dx -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\turbulence -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\acoustics -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\parallel -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\etc -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\ue -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dpm -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\src\dbns -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\cortex\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\client\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\tgrid\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\multiport\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\fluen t21.1.0\multiport\mpi_wrapper\src -I"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent"\inclu de udf_names.c
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30133 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

udf_names.c
# Linking libudf.dll because of makefile user_nt.udf udf_names.obj UDF_Tempgrad.obj
link /Libpath:"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent "\fluent21.1.0\win64\2ddp_node /Libpath:"C:\PROGRA~1\ANSYSI~1\ANSYSS~1\v211\fluent "\fluent21.1.0\multiport\win64\mpi\shared /dll /out:libudf.dll udf_names.obj UDF_Tempgrad.obj mport.lib fl_mpi2110.lib
Microsoft (R) Incremental Linker Version 14.29.30133.0
Copyright (C) Microsoft Corporation. All rights reserved.

Creating library libudf.lib and object libudf.exp

Done.

LAPTOP-1PSN8BVE: Opening library "D:\Project\CDmicro1_files\dp0\FFF-1\Fluent\libudf"...
Error at Node 0: Error code: 126


Error at host: Error code: 126


Error: Error code: 126\n
Error Object: #f
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Old   August 20, 2021, 14:09
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The uninitialized variable is also something you need to solve: you adjust thread "t" , but don't say what "t" refers to. But that is unrelated to error 126.

Is this the only udf with this problem? Have you successfully used UDFs before on this system?
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"The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform" is NOT the error after compiling. It is the error after loading. To see compiler errors, look at your screen after you click "build".
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Old   August 22, 2021, 00:10
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I haven't done any UDFs in my system before. Checked some other UDFs. They are also showing problem.
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