petsc-3.7.1 2016-05-15
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PCComputeExplicitOperator

Computes the explicit preconditioned operator.

Synopsis

#include "petscksp.h" 
PetscErrorCode  PCComputeExplicitOperator(PC pc,Mat *mat)
Collective on PC Many br

Input Parameter

pc -the preconditioner object Many br

Output Parameter

mat -the explict preconditioned operator Many br

Notes

This computation is done by applying the operators to columns of the Many bridentity matrix. Many br

Currently, this routine uses a dense matrix format when 1 processor Many bris used and a sparse format otherwise. This routine is costly in general, Many brand is recommended for use only with relatively small systems. Many br

Many br

Keywords

PC, compute, explicit, operator

See Also

KSPComputeExplicitOperator()

Level:advanced
Location:
src/ksp/pc/interface/precon.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages