intro story D-Flow FM

 

D-Flow Flexible Mesh

D-Flow Flexible Mesh (D-Flow FM) is the new software engine for hydrodynamical simulations on unstructured grids in 1D-2D-3D. Together with the familiar curvilinear meshes from Delft3D 4, the unstructured grid can consist of triangles, pentagons (etc.) and 1D channel networks, all in one single mesh. It combines proven technology from the hydrodynamic engines of Delft3D 4 and SOBEK 2 and adds flexible administration, resulting in:

  • Easier 1D-2D-3D model coupling, intuitive setup of boundary conditions and meteorological forcings (amongst others).
  • More flexible 2D gridding in delta regions, river junctions, harbours, intertidal flats and more.
  • High performance by smart use of multicore architectures, and grid computing clusters.
An overview of the current developments can be found here.
 
The D-Flow FM - team would be delighted if you would participate in discussions on the generation of meshes, the specification of boundary conditions, the running of computations, and all kinds of other relevant topics. Feel free to share your smart questions and/or brilliant solutions! 

 

=======================================================
We have launched a new website (still under construction so expect continuous improvements) and a new forum dedicated to Delft3D Flexible Mesh.
Please follow this link to the new forum: 
/web/delft3dfm/forum
Post your questions, issues, suggestions, difficulties related to our Delft3D Flexible Mesh Suite on the new forum.

=======================================================

** PLEASE TAG YOUR POST! **

  

 

Sub groups
D-Flow Flexible Mesh
DELWAQ
Cohesive sediments & muddy systems

 

Message Boards

running in mpi mode, error:"libflow2d3d.so: undefined symbol: mpi_initializ

SL
Sheng Lu, modified 7 Years ago.

running in mpi mode, error:"libflow2d3d.so: undefined symbol: mpi_initializ

Youngling Posts: 1 Join Date: 3/28/11 Recent Posts
Hi,

the systme information as follows,
LSB Version: :core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0- ia32:printing-4.0-noarch
Distributor ID: CentOS
Description: CentOS release 6.2 (Final) Red Hat Enterprise Linux
Release: 6.2
Codename: Final

Running environment: mvapich2-1.8/ifort v11.1

the source code version: 5.00.06.1677


When I run the delft3d running in mpi mode, there are errors as follows,

"libflow2d3d.so: undefined symbol: mpi_initialized_
[***@mnode-ib cjk2002]$ /usr/local/mvapi2/bin/mpiexec -launcher rsh -n 16 -f ./hosts
/usr/local/Delft3D/bin/d_hydro.exe TMP_config_flow2d3d_17492.xml
/usr/local/Delft3D/bin/d_hydro.exe: symbol lookup error: /home/***/Delft3D/lib/libflow2d3d.so: undefined symbol: mpi_initialized_
/usr/local/Delft3D/bin/d_hydro.exe: symbol lookup error: /home/***/Delft3D/lib/libflow2d3d.so: undefined symbol: mpi_initialized_
/usr/local/Delft3D/bin/d_hydro.exe: symbol lookup error: /home/***/Delft3D/lib/
"

Looking forward to suggestions and solutions,

Best Regards,

Sheng Lu
linux mpi red hat enterprise
Adri Mourits, modified 7 Years ago.

RE: running in mpi mode, error:"libflow2d3d.so: undefined symbol: mpi_initi (Answer)

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi Sheng Lu,

Please have a look at this (freshly written) FAQ item.

Regards,

Adri
AA
Anonymous Anonymous, modified 7 Years ago.

RE: running in mpi mode, error:"libflow2d3d.so: undefined symbol: mpi_initi

Jedi Master Posts: 333 Join Date: 7/30/20 Recent Posts
Hi Adri,


I checked the FAQ item and the log file from Delft3d which did not reveal the mentioned error.
Neither could I identify the outlined errors in the Mpich log.
Nevertheless, I deinstalled and recompiled mpich with -fPIC flag and tried again.
Unfortunately the error remains.
I checked for the files in the directories mentioned in the FAQ and the files are there.
(http://oss.deltares.nl/web/delft3d/source-code)

How do I get Delft3d to run in parallel mode using mpiexec?


Kind regards,

Oliver
Adri Mourits, modified 7 Years ago.

RE: running in mpi mode, error:"libflow2d3d.so: undefined symbol: mpi_initi

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi Oliver,

Does the info I posted Today in this thread and this thread help?

Regards,

Adri