PCAIRSetAutoTruncateTol#

Sets the relative tolerance used by PCAIR to decide if a coarse-grid solver is good enough to truncate the hierarchy

Synopsis#

PETSC_EXTERN PetscErrorCode PCAIRSetAutoTruncateTol(PC pc, PetscReal input_real)

Logically Collective

Input Parameters#

pc - the PCAIR preconditioner context
input_real - the relative tolerance used to determine if a coarse-grid solver is good enough to truncate the hierarchy

Options Database Key#

-pc_air_auto_truncate_tol input_real - tolerance to use with auto truncation; defaults to 1e-14

See Also#

KSP: Linear System Solvers, PCAIR, PCAIRGetAutoTruncateTol(), PCAIRSetAutoTruncateStartLevel()

Level#

advanced

Index of all PC routines
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Index of all manual pages