We don't have colored smoothers currently in PETSc.
> On Jan 10, 2023, at 12:56 PM, Jed Brown <[email protected]> wrote: > > 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
