[petsc-users] Number of levels in PCGAMG

[Erik Andreassen]

Hi,

I would like to know how to change the number of multigrid levels in AMG. I have tried PCMGSetLevels, which does not work, and I suspect that the PC is not recognized as a multigrid preconditioner, because I'm PCGAMG as the preconditioner to the coarse level solver of a PCMG. However, I do not understand why it is not recognized as a multigrid preconditioner.

Please let me know if the above is unclear,
Erik
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