[petsc-users] PCMG: level dependent smoothing steps

Pietro Benedusi pietro.benedusi at usi.ch
Tue Feb 19 09:06:56 CST 2019


Dear PETSc team,

Is there a way to set the number of smoothing steps done inside a specific multigrid level l ?
Something like:

PCMGSetNumberSmoothDown<https://www.mcs.anl.gov/petsc/petsc-3.8/docs/manualpages/PCMG/PCMGSetNumberSmoothDown.html#PCMGSetNumberSmoothDown>(PC<https://www.mcs.anl.gov/petsc/petsc-3.8/docs/manualpages/PC/PC.html#PC> pc,PetscInt<https://www.mcs.anl.gov/petsc/petsc-3.8/docs/manualpages/Sys/PetscInt.html#PetscInt> n, PetscInt<https://www.mcs.anl.gov/petsc/petsc-3.8/docs/manualpages/Sys/PetscInt.html#PetscInt> l)

In this way I could, for example set 3 smoothing steps on level 1 and 7 smoothing steps on level 2.

Thank you!
Pietro
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