petsc-3.14.6 2021-03-30
PCFieldSplitSetIS
Sets the exact elements for field
Synopsis
#include "petscpc.h"
PetscErrorCode PCFieldSplitSetIS(PC pc,const char splitname[],IS is)
Logically Collective on PC
Input Parameters
| pc | - the preconditioner context
|
| splitname | - name of this split, if NULL the number of the split is used
|
| is | - the index set that defines the vector elements in this field
|
Notes
Use PCFieldSplitSetFields(), for fields defined by strided types.
This function is called once per split (it creates a new split each time). Solve options
for this split will be available under the prefix -fieldsplit_SPLITNAME_.
See Also
PCFieldSplitGetSubKSP(), PCFIELDSPLIT, PCFieldSplitSetBlockSize()
Level
intermediate
Location
src/ksp/pc/impls/fieldsplit/fieldsplit.c
Examples
src/snes/tutorials/ex28.c.html
src/snes/tutorials/ex70.c.html
Implementations
PCFieldSplitSetIS_FieldSplit in src/ksp/pc/impls/fieldsplit/fieldsplit.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages