PCJacobiSetType

Causes the Jacobi preconditioner to use either the diagonal, the maximum entry in each row, of the sum of rows entries for the diagonal preconditioner

Synopsis

#include "petscpc.h" 
PetscErrorCode PCJacobiSetType(PC pc, PCJacobiType type)

Logically Collective

Input Parameters

• pc - the preconditioner context

• type - PC_JACOBI_DIAGONAL, PC_JACOBI_ROWMAX, PC_JACOBI_ROWSUM

Options Database Key

• -pc_jacobi_type <diagonal,rowmax,rowsum> - the type of diagonal matrix to use for Jacobi

Developer Note

Why is there a separate function for using the absolute value?

See Also

PCJACOBI, PCJacobiSetUseAbs(), PCJacobiGetType()

Level

intermediate

Location

src/ksp/pc/impls/jacobi/jacobi.c

Implementations

PCJacobiSetType_Jacobi in src/ksp/pc/impls/jacobi/jacobi.c

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