Re: dividing simulation box using mpi

[Jean-Noël Grad]

Hi,

There is a script `samples/visualization_cellsystem.py` that helps 
visualizing domain decomposition for different values of 
`system.cell_system.node_grid`. For example, under the line 
`system.cell_system.skin = 0.4`, add 
`system.cell_system.node_grid=[2,1,2]` and run the script with `mpiexec 
-n 4 ./pypresso ../samples/visualization_cellsystem.py` to see how the 
domain decomposition changed compared to the default value of 
`node_grid`. Only the cellsystem of MPI rank 0 is displayed in wireframes.

Best regards,
JN

On 4/20/20 7:04 AM, Rudolf Weeber wrote:
> Hi,
> On Mon, Apr 20, 2020 at 12:45:59AM +0000, Pouyan Keshavarz wrote:
> > I am looking for a way to change the order of the simulation box decomposition 
> > after using mpi. For example, when I have a simulation box with geometry 
> > 50*30*20 and using four cores in mpi, the local boxes create having dimensions 
> > 25*15*20. But, I would like to have 25*30*10 local simulation boxes. Can it be 
> > done?
> Yes. You should be able to set system.cell_system.node_grid, e.g., to [2,1,2].
>
> Regards, Rudolf