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! 

 

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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.

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

 

Message Boards

ERROR RDMORLYR: memory alloc error

CE
Christopher Esposito, modified 7 Years ago.

ERROR RDMORLYR: memory alloc error

Padawan Posts: 35 Join Date: 10/16/12 Recent Posts
Hi All,

I have a simulation that runs without any problem in parallel, but gives the error in the title when I run it on a single processor.

These are being run on a Windows 7 x64 machine.

I am attaching my tri-diag file. Does anyone have any idea what could be the matter?

-Chris

Attachments:

Adri Mourits, modified 7 Years ago.

RE: ERROR RDMORLYR: memory alloc error

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

The Windows version of Delft3D-FLOW is 32bit, with a memory limitation around 2Gb. Your model is too big to fit in memory when being run in one process. When running in parallel the domain is devided over several processes, each using less memory than the single process run.

64bit Windows version is on our TO DO list.

Workarounds:
Use the 64bit Linux version
Use the single precision version
Run in parallel
Simplify your model

Regards,

Adri
CE
Christopher Esposito, modified 7 Years ago.

RE: ERROR RDMORLYR: memory alloc error

Padawan Posts: 35 Join Date: 10/16/12 Recent Posts
Thanks Adri, I thought that might be the problem....I'll go to one of the workarounds.

-Chris