PCDeflationSetSpaceToCompute#

Set deflation space type and size to compute.

Synopsis#

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 - 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#

KSP: Linear System Solvers, PCDeflationSetLevels(), PCDEFLATION

Level#

intermediate

Location#

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

Implementations#

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


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