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
OFFLINE
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)

The administrator has disabled public write access.

Error: unable to load the dynamic library _api.dll 2 years 3 weeks ago #41476

pham
OFFLINE
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

The administrator has disabled public write access.

The following user(s) said Thank You: Mohamedalmetwally

Error: unable to load the dynamic library _api.dll 2 years 3 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.
	The administrator has disabled public write access.

Error: unable to load the dynamic library _api.dll 2 years 1 week ago #41559

Mohamedalmetwally
OFFLINE
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)

The administrator has disabled public write access.

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
	The administrator has disabled public write access.

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
	The administrator has disabled public write access.

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
	The administrator has disabled public write access.