petsc-master 2017-10-22
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PCASMGetSubKSP

Gets the local KSP contexts for all blocks on this processor.

Synopsis

#include "petscpc.h" 
PetscErrorCode  PCASMGetSubKSP(PC pc,PetscInt *n_local,PetscInt *first_local,KSP *ksp[])
Collective on PC iff first_local is requested

Input Parameter

pc -the preconditioner context

Output Parameters

n_local - the number of blocks on this processor or NULL
first_local - the global number of the first block on this processor or NULL, all processors must request or all must pass NULL
ksp - the array of KSP contexts

Note

After PCASMGetSubKSP() the array of KSPes is not to be freed.

You must call KSPSetUp() before calling PCASMGetSubKSP().

Fortran note

The output argument 'ksp' must be an array of sufficient length or PETSC_NULL_KSP. The latter can be used to learn the necessary length.

Keywords

PC, ASM, additive Schwarz, get, sub, KSP, context

See Also

PCASMSetTotalSubdomains(), PCASMSetTotalSubdomains(), PCASMSetOverlap(),
PCASMCreateSubdomains2D(),

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

Examples

src/ksp/ksp/examples/tutorials/ex8.c.html