PCSMG#
the hypre (structured grid) SMG multigrid solver
Options Database Keys#
-pc_smg_its
- number of iterations of SMG to use as preconditioner-pc_smg_num_pre_relax
- number of smoothing steps before coarse grid-pc_smg_num_post_relax
- number of smoothing steps after coarse grid-pc_smg_tol
- tolerance of SMG
Notes#
This is for CELL-centered descretizations
This must be used with the MATHYPRESTRUCT MatType.
This does not provide all the functionality of hypre’s SMG solver, it supports only one block per process defined by a PETSc DMDA.
See PCSYSPFMG, PCSMG, PCPFMG, and PCHYPRE for access to hypre’s other preconditioners
See Also#
Level#
advanced
Location#
src/ksp/pc/impls/hypre/hypre.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages