particle parallelization

[Shahab Golshan]

Hello,

I have a few questions on the parallelization aspects of a system containing particles and I would appreciate it if someone could answer them.

The first one is: Let's say I'm using 2 CPUs for a simulation. If I change a property of a ghost particle (located in a ghost cell for CPU0), will the property of the real particle on the other CPU change?

Thanks in advance

Shahab

[Bruno Blais]

Dear Shahab,

No, if you change a property of a particle on proc 0 and this particle is a ghost cell on proc 0, this property will not change on proc 1 (which would be its owner).

You would need to change the property on proc 1 and then I think the update on proc 0 will only be done when you call the exchange_ghost_particles function of the ParticleHandler class

[Wolfgang Bangerth]

Shahab,
the question has already been answered, but I thought I'd also put that into
the documentation:
https://github.com/dealii/dealii/pull/10663

Best
W.
--
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Wolfgang Bangerth email: bang...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/