the hypre SysPFMG multigrid solver
|-pc_syspfmg_its <its> number of iterations of SysPFMG to use as preconditioner||- . -pc_syspfmg_num_pre_relax <steps> number of smoothing steps before coarse grid
|-pc_syspfmg_num_post_relax <steps> number of smoothing steps after coarse grid||- . -pc_syspfmg_tol <tol> tolerance of SysPFMG
|-pc_syspfmg_relax_type ||- relaxation type for the up and down cycles, one of Weighted-Jacobi,Red/Black-Gauss-Seidel
Notes: This is for CELL-centered descretizations
This must be used with the MATHYPRESSTRUCT matrix type.
This is less general than in hypre, it supports only one part, and one block per process defined by a PETSc DMDA.
Also, only cell-centered variables.
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages