TELEMAC-MASCARET Forum: Error: unable to load the dynamic library

Error: unable to load the dynamic library _api.dll 2 years 3 weeks ago #41443

Mohamedalmetwally
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Fresh Boarder
Posts: 28

Hello,

I am trying to run the telemac2d API example. I am facing the following error

utils.exceptions.TelemacException: Error: unable to load the dynamic library _api.dll
You can check the environment variable: PYTHONPATH
No module named '_api'

I'm using windows 10 and Telemac v8p3r1. I managed to compile the API.
My PYTHONPATH:

%HOMETEL%\scripts\python3; C:\opentelemac-mascaret\v8p3r1\builds\win7gfors\wrap_api\lib

My user environment Path:

%HOMETEL%\scripts\python3

I tried all the suggestions in the previous forum posts about the same topic or related like "unable to load the dynamic library _hermes.dll".
I have file named (_api.cp310-win_amd64.pyd) in (C:\opentelemac-mascaret\v8p3r1\builds\win7gfors\wrap_api\lib) I tried to change it to _api.pyd one time and _api.dll another time and copied it to "%HOMETEL%\scripts\python3", Unfortuonately all these trials failed.

Any suggestions?

Attachments:

systel_v8p3r1.cfg (3KB)

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Error: unable to load the dynamic library _api.dll 2 years 2 weeks ago #41476

pham
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Administrator
Posts: 1559
Thank you received: 602

Hello again,

In the other topic you have already posted, many of what I have already answered is also right here.

All you have already written here seem to show that your installation is not right and that it is not a TELEMAC-2D issue (can you run the TELEMAC-2D steering file simply by running telemac2d.py name_steering_file.cas?

I move your topic in the Windows installation section. Maybe you will get more answers,

Chi-Tuan

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The following user(s) said Thank You: Mohamedalmetwally

Error: unable to load the dynamic library _api.dll 2 years 2 weeks ago #41494

Mohamedalmetwally OFFLINE Fresh Boarder Posts: 28	Thank you very much for your suggestions. As recommended I used telemac2d.py to run a simple simulation and it worked. So, I think it's not related to the installation. Are there any other possible reasons? I asked someone, he said if the software uses Cmake it could be the issue.
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Error: unable to load the dynamic library _api.dll 2 years 1 week ago #41559

Mohamedalmetwally
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Fresh Boarder
Posts: 28

Hello Chi-Tuan,

I tried to install TELEMAC on another machine using Windows 10 and v8p3r1 I followed the instructions from the Installation on Windows wiki.opentelemac.org/doku.php?id=install..._windows_with_cygwin
and used the systel file as follows:

# _____                              _______________________________
# ____/ TELEMAC Project Definitions /______________________________/
#
[Configurations]
configs: win7gfors
# win7tels win7gfors win7gforsdbg  win7telsdbg
# _____                     ________________________________________
# ____/ windows 7 generals /_______________________________________/
[general]
#
root:       C:\opentelemac-mascaret\v8p3r1
version: v8p3r1
language:   2
modules:    system -dredgesim
options: api static
#
f2py_name: f2py
f2py_opt: -O3
pyd_fcompiler: gnu95
pyd_compiler: mingw32
libs_all:	
#
sfx_zip:    .zip
sfx_lib:    .a
sfx_mod:    .mod
sfx_exe:    .exe
#
val_root:   <root>\examples
val_rank:   all
cmd_obj_c: gcc -c <srcName> -o <objName>
# also possible val_rank:   <3 >7 6
#
# _____                         ____________________________________
# ____/ windows 7 intel scalar /___________________________________/
[win7tels]
#
cmd_obj:    ifort.exe /c /Ot /iface:cref /iface:nomixed_str_len_arg /nologo /fpp /names:uppercase /convert:big_endian <mods> <incs> <f95name>
cmd_lib:    xilib.exe /nologo /out:<libname> <objs>
cmd_exe:    xilink.exe /nologo /subsystem:console /stack:536870912 /out:<exename> <objs> <libs>
#
mods_all:   /include:<config>
#
sfx_obj:    .obj
#
# _____                               ____________________________________
# ____/ windows 7 intel scalar debug /___________________________________/
[win7telsdbg]
#
cmd_obj:    ifort.exe /c /debug:full /iface:cref /iface:nomixed_str_len_arg /nologo /fpp /names:uppercase /convert:big_endian <mods> <incs> <f95name>
cmd_lib:    xilib.exe /nologo /out:<libname> <objs>
cmd_exe:    xilink.exe /nologo /subsystem:console /stack:536870912 /out:<exename> <objs> <libs>
#
mods_all:   /include:<config>
#
sfx_obj:    .obj
#
# _____                            _________________________________
# ____/ windows 7 gfortran scalar /________________________________/
[win7gfors]
#
cmd_obj:    gfortran -cpp -c -O3 -fopenmp -fconvert=big-endian -frecord-marker=4 <mods> <incs> <f95name>
cmd_lib:    ar cru <libname> <objs>
cmd_exe:    gfortran -fopenmp -fconvert=big-endian -frecord-marker=4 -v -lm -o <exename> <objs>  <libs>
#
mods_all:   -I <config>
#
sfx_obj:    .o
#
# _____                                  _________________________________
# ____/ windows 7 gfortran scalar debug /________________________________/
[win7gforsdbg]
#
cmd_obj:    gfortran -cpp -c -O3 -fopenmp -fconvert=big-endian -frecord-marker=4 <mods> <incs> <f95name>
cmd_lib:    ar cru <libname> <objs>
cmd_exe:    gfortran -fopenmp -fconvert=big-endian -frecord-marker=4 -v -lm -o <exename> <objs> <libs>
#
mods_all:   -I <config>
#
sfx_obj:    .o
#

TELEMAC compiled as shown in the attached figure but the same problem with the dynamic library still exists when trying to run the API telemac2d example.

I checked the TelAPY manual, it mentioned

the TELEMAC-MASCARET SYSTEM and all its external libraries must be compiled in dynamic form.

How I can compile in dynamic form in windows?

I found these lines

[gfortran.dyn]
brief: GFortran compiler with Open MPI in dynamic mode
#
options: api
#
sfx_lib:    .so
#
mpi_cmdexec: mpirun -machinefile MPI_HOSTFILE -np <ncsize> <exename>
#
cmd_obj:    mpif90 -c -cpp -fPIC -O2 -fconvert=big-endian -frecord-marker=4 -DHAVE_MPI -DHAVE_MUMPS -DHAVE_MED -DHAVE_VTK <mods> <incs> <f95name>
cmd_lib:    mpif90 -fPIC -shared -fconvert=big-endian -frecord-marker=4 -lpthread -lm -o <libname> <objs>
cmd_exe:    mpif90 -fPIC -fconvert=big-endian -frecord-marker=4 -lpthread -lm -o <exename> <objs> <libs>
#
libs_all: -L$MUMPSHOME/lib -ldmumps -lmumps_common -lpord
          -L$SCALAPACKHOME/lib -lscalapack
          -lblas
          -lm -L$MEDHOME/lib -lmed -L$HDF5HOME/lib -lhdf5 -ldl -lstdc++ -lz
          -L$METISHOME/lib -lmetis
 
cmd_obj_c: gcc -c -fPIC <srcName> -o <objName>

in the Installation on Linux, I added them to my configuration file, but nothing changed.

I'm really not familiar with these things.

I need your kind advice. Thank you for your understanding.

Best regards,
Mohamed

Attachments:

ApiCompiled.png (40KB)

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Error: unable to load the dynamic library _api.dll 3 months 2 weeks ago #45353

SANDOVAL OFFLINE Junior Boarder Posts: 45 Thank you received: 2	Hello Mohamedalmetwally, have you solved the problem to run dynamic simulations on windows? Regards Ricardo
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Error: unable to load the dynamic library _api.dll 3 months 2 weeks ago #45356

Mohamedalmetwally OFFLINE Fresh Boarder Posts: 28	Hello Ricardo, I have stopped using the Windows version. Perhaps you can try the new version of Telemac v8p5, as it works well for me on Linux. Regards, Mohamed
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Error: unable to load the dynamic library _api.dll 3 months 2 weeks ago #45357

SANDOVAL OFFLINE Junior Boarder Posts: 45 Thank you received: 2	That's great. Maybe could you share your systel.cfg and pysource.sh files that have you used for dynamic telemac v8p5 compilation on Linux? Best regards Ricardo
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