[petsc-users] GPU implementation of serial smoothers

[Mark Lohry]

I'm running GAMG with CUDA, and I'm wondering how the nominally serial
smoother algorithms are implemented on GPU? Specifically SOR/GS and ILU(0)
-- in e.g. AMGx these are applied by first creating a coloring, and the
smoother passes are done color by color. Is this how it's done in petsc AMG?

Tangential, AMGx and OpenFOAM offer something called "DILU", diagonal ILU.
Is there an equivalent in petsc?

Thanks,
Mark
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