Re: [petsc-users] GPU implementation of serial smoothers

Is DILU a point-block method? We have -pc_type pbjacobi (and vpbjacobi if the node size is not uniform). The are good choices for scale-resolving CFD on GPUs. Mark Lohry <[email protected]> writes:

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