petsc-master 2019-11-13
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PCDeflationSetSpaceToCompute

Set deflation space type and size to compute.

Synopsis

#include "petscksp.h" 
PetscErrorCode PCDeflationSetSpaceToCompute(PC pc,PCDeflationSpaceType type,PetscInt size)
Logically Collective

Input Parameters

pc - the preconditioner context
type - deflation space type to compute (or PETSC_IGNORE)
size - size of the space to compute (or PETSC_DEFAULT)

Options Database Keys

-pc_deflation_compute_space <haar> - compute PCDeflationSpaceType deflation space
-pc_deflation_compute_space_size <1> - size of the deflation space

Notes

For wavelet-based deflation, size represents number of levels.

The deflation space is computed in PCSetUP().

See Also

PCDeflationSetLevels(), PCDEFLATION

Level

intermediate

Location

src/ksp/pc/impls/deflation/deflation.c

Implementations

PCDeflationSetSpaceToCompute_Deflation in src/ksp/pc/impls/deflation/deflation.c

Index of all PC routines
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Index of all manual pages