[jhns]

Hi,

I have Ansys running on a linux-cluster with 72 cores and the Ansys HPC license for 32 cores.
Solving cfx tasks works nice but I can't find any information about meshing on multiple cores from command line.
Maybe someone of you can help me?

1. Is there a way to generate the mesh from command line?
2. Is it possible to use multiple cores on multiple servers for generating meshes?

[Kapi]

Hi Jhns,

1. Is there a way to generate the mesh from command line?

Yes you can, with the help of scripting. First you have create workbench journal file(.wbjn) with which can open workbench, open mesh and create mesh with all boundary condition.
To create mesh through WBJN file you need to have a javascript (.js) file which list the things(boundary condition) you want to do in mesh (coded)
Once you have JS file and wbjn file, you can call WBJN file via command line something like this

"C:\Program Files\ANSYS Inc\v150\Framework\bin\Win64\RunWB2.exe" -I -R Project.wbjn

As far as I know you cant force mesh to run with multiple cores

2. Is it possible to use multiple cores on multiple servers for generating meshes?

but you can give number of cores in Tools>Options>Meshing>"number of CPUs for parallel part meshing
if Meshing feels the use of multiple cores it will take on its own but if it feels it doesn't need more cores then it wont.
Someone please correct me if I am wrong

Hope it helps,

Cheers KAPI

[jhns]

Thank you!


I hoped there would be a possibility to mesh not only with multiple cores but also on multiple machines using MPI, because I only have 8 GB of memory per computing node but I need something like 20 GB, so distributed memory really would help.

But the solution with the javascript file is a goo starting point.

[Kapi]

Thats right!

There are few options depending upon how many licenses you have.

You can break your geometry in several parts and mesh it separately in different meshes, that way you can run multiple mesh at the same time, its less time consuming and you can get a very good mesh in no time plus you will be able to use all your cores if you need!

With my personal experience, its better to divide the geometry and then mesh so you know what kind of elements you need for that part of geometry.

Hope it helps

Kapi