Elmer Discussion Forum

Hi

could you try changing the preconditioning from ILU2 -> ILU0 and
rerunning? I had similiar trouble with two partitions. I don't think
the "Target Nodes" thing is even supposed to work in parallel.

Juha

Hi, the ElmerSolver should add the "Target Nodes" internally when "Target Coordinates" are used. Seems to work for me... Don't really have a clue what this might be about. Anyway, I made some more corrections after my first reply, could you still try updating your sources and re-...

Hi,

this is now fixed in the SVN. The trouble was that each partition added the 'Displacement n Load'
to a local node closest to given "Target Coordinates".

Thanks for the report!

Regards, Juha

Hi,
I'm sorry that i have not followed up on this earlier...
Could you also attach the mesh?
Regards,Juha

Hi

Generally this should work out of box, (if you get convergece). if you would care to share your case, i'll have a look?

Regards, Juha

Hi, The documentation seems badly out of date, sorry 'bout that. The normal orientation can be set using a BC section keyword Normal Target Body = Integer n such that the normal will then point in the direction of body "n". By default the normal will point towards the lower numbered body. ...

Hi,

if you have a simple & smallish example (sif+mesh), i could try investigating the
convergence troubles... ?

Regards, Juha

Hi Eelis, i'm afraid that at least the direct solver (using tree gauge) won't work in parallel. When using the ungauged system (and iterative solver, e.g. BiCGStabL; the transient system is not symmetric) the safest preconditioning is 'none', as the over determined system might give bad ILUs. This a...

Hi Matthias,

Is there a possibility that the UDF is compiled with different compiler
version to that ElmerSolver is compiled with? Or some similiar version
mixup?

Anyway, if you can post a test case, i can have a look if i can spot anything.

Regards,Juha

Yes,
the script probably needs the ELMER_HOME environment variable in order to work.
Have a nice weekend, Juha