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

Optimal machine build for D3D?

SH
Shawn Harrison, modified 7 Years ago.

Optimal machine build for D3D?

Padawan Posts: 70 Join Date: 6/25/12 Recent Posts
Hi All,

I'm thinking to buy a new computer for the primary purpose of running D3D models. Of course, I enjoy heavy matlab computing as well.. and want graphics capabilities to make fast, intricate plots (and dual monitors).

I'm curious if any one has suggestions about recent builds or hardware specifications particularly well-suited for running fast, stable D3D simulations.
Mainly, I use D3D for morphological modeling (FLOW-WAVE coupling with sediment updating).

Thanks in advance for your advice,
Shawn
Adri Mourits, modified 7 Years ago.

RE: Optimal machine build for D3D?

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

Some tips:

Hardware:
Use Intel processors (in combination with the Intel compiler).
A lot of cores is only interesting when you can run parallel. If you mainly do combined FLOW - WAVE calculations, SWAN will use all cores but FLOW won't. Using DomainDecomposition will enable FLOW to use more than one core. Of course you can always do separate calculations at the same time.

Software:
Linux is faster than Windows.
Use the Intel compiler (in combination with Intel processors).

Regards,

Adri
SH
Shawn Harrison, modified 7 Years ago.

RE: Optimal machine build for D3D?

Padawan Posts: 70 Join Date: 6/25/12 Recent Posts
Thank you for the tips Adri. I will keep that in mind.

Any other tips? E.g. Intel i7 vs Xeon? Minimum graphics card, e.g. Is NVIDIA GeForce GT640 enough, or should I shoot more for NVIDIA Quadro 2000 bottom end?
Adri Mourits, modified 7 Years ago.

RE: Optimal machine build for D3D?

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

I did not do any detailed performance tests, but looking at some tests in another project, i7 seems to be faster than Xeon. Graphics is not a bottle neck.

Regards,

Adri
MB
Matt Brennan, modified 5 Years ago.

RE: Optimal machine build for D3D?

Youngling Posts: 3 Join Date: 2/11/13 Recent Posts
With two years since the last post on this thread, I was wondering if anyone has any updates regarding hardware suggestions for D3D
Qinghua Ye, modified 5 Years ago.

RE: Optimal machine build for D3D?

Jedi Council Member Posts: 612 Join Date: 3/2/11 Recent Posts
Hi Matt,

I must say, the demanding of hardware from Delft3D side didn't increase much. That is a good thing, isn't it? We do have some update in performance, such as, the latest default windows version is on 64-bit (on Linux it was 64-bit from 2 years ago), the parallel computing gets more stable now, etc.

In short, you may still prepare the hardware according to your budget.

Cheers,

Qinghua
MB
Matt Brennan, modified 5 Years ago.

RE: Optimal machine build for D3D?

Youngling Posts: 3 Join Date: 2/11/13 Recent Posts
Thanks for the update