Preconditioner - HYPRE
Usage:
-ksp_type (your choice) -pc_type hypre
-ksp_type preonly -pc_type hypre
Options:
-pc_hypre_type pilut
text
-pc_hypre_type parasails
text
-pc_hypre_type boomeramg
Multigrid
-pc_hypre_type euclid
text
Info: Since the hypre preconditioner can be utilized as a solver as well, sometimes this should be run with the option
-ksp_type preonly