[HectorRedal]

Hello,


I have created a CFD software that uses the Finite Element Method and it is GUI-based that is ready to download for anyone.


The software can be found at:
https://sites.google.com/view/dynamfluid/


I hope you enjoy it!


Any comment / suggestion / question is welcome.
If needed help for installing the software or using it, don't hesitate to contact me.



Best regards,

[LVDH]

Thumbs up.

In the description it says that it is a 2D CFD software. In the sample I see 3D meshes. So is it 3D?

Do you have any example of scalabilty?

And what about a Linux version?

[HectorRedal]

Your are right: It is both a 2D and a 3D CFD solver. I have corrected the description of the software, including an statement that it supports 3D problems as well.


What do you mean by scalability example? What are you referring to?
Running the same problem in different hardware with different processors having different cores / threads per processor? And comparing the performance as the number of cores per system increases?



Unfortunately there is not a version that can run on top of Linux.
I have developed the software for Win32 and Windows x64 based systems.


There is an Windows emulator that can be run in Linux: Wine.

[LVDH]

Originally Posted by HectorRedal

What do you mean by scalability example? What are you referring to?
Running the same problem in different hardware with different processors having different cores / threads per processor? And comparing the performance as the number of cores per system increases?

I mean running on the same hardware with different number of CPU cores the see how the speed improves by using more computing power.

Originally Posted by HectorRedal

There is an Windows emulator that can be run in Linux: Wine.

Well, as far as I know Wine is not an emulator.
But jokes aside, I am asking because if you want to run larger simulations one day, the software will have to work under Linux as the bigger computers run exactly that.
What language or tools did you use to create your software?

[HectorRedal]

Originally Posted by LVDH

I mean running on the same hardware with different number of CPU cores the see how the speed improves by using more computing power.

I have carried out some comparisons between different hardwares:
- 2 cores (4 threads).

- 10 cores (20 threads).


I have measured the loadability between both hardware configurations and the time spent in solving a fixed size problem.
- 2 cores: 70% of maximum cpu capacity used, 3 minutes taken to solve the problem

- 10 cores: 40% of maximum cpu capcity used, 20 seconds taken to solve the problem.



The bottleneck of the application is the calculation of the disperse matrix in the poisson equation. I am using eigen library for the math computation, but the eigen library is single threaded. I have not found a means for performing the disperse matrix inverse using a library that supports parallelism.

Originally Posted by LVDH

Well, as far as I know Wine is not an emulator.
But jokes aside, I am asking because if you want to run larger simulations one day, the software will have to work under Linux as the bigger computers run exactly that.
What language or tools did you use to create your software?

I have developed the software using Microsoft Visual Studio and C++ language.
The program uses a ODBC database engine for accessing the ODBC database (where the problem / project data is stored).


I understand your point regarding Linux.
Obviously it has not been a good idea having chosen the Windows platform for the application.
The migration of the application would imply:
- Developing the GUI part from scratch.
- Minimal adaptation of the core (Solver).
- Developing the database manager layer from scracth as well, (well, previous to this, looking for a database manager for storing the application project data).

[wkernkamp]

I think ODBC is supported under linux, so maybe that part is easy as well.

[HectorRedal]

Originally Posted by wkernkamp

I think ODBC is supported under linux, so maybe that part is easy as well.

I think I will have to dive into it and investigate a bit how this can be done.
Thanks for the information.