Hello, I am using MOOSE to perform simulation and then I solve system in PETSc by using my own solver. I am currently working via SNES interface ( to obtain Jacobian, ... ) I would like to create my own version of multigrid method. I was thinking about using DM attached in SNES struct. Unfortunately, I am not able to use any data from there. I can get type of it and it says : libmeshDM TYPE. I think, PETSc version of multigrid it uses automatically. How is this done/ can be done? Or alternatively, I would need obtain scatters vectors to create restriction/interpolation operators. Is it possible to pass somehow this information out of libmesh/moose into petsc? Thanks, alena
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