petsc-3.7.7 2017-09-25

PCASMGetSubKSP

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

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

Collective on PC iff first_local is requested

pc -the preconditioner context

	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

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

Currently for some matrix implementations only 1 block per processor is supported.

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

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

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