[petsc-users] DM arbitrary assignment of ranks

[Carlos Pachajoa]

Hello, 

 
                            I'm working on a CFD simulator that will be 
used for educational purposes.

I'm using PETSc to solve a Poisson equation for the pressure, using DM 
and a 5-point stencil. I would like to extend it to work on parallel.

Since the code will also be used to teach some fundamental concepts of 
parallel programming, it would be ideal if the user can set which rank 
deals with each subdomain. Out of the DM, one can obtain the corners of 
the region corresponding to a rank, however, I have not found a function 
to assign a processor to a region. I know that you can assign a set of 
rows to any processor when explicitly setting the columns of a matrix, 
but I wonder if this is also possible using DM.

Thank you for your time and your hints.

Best regards,

Carlos