petsc-dev 2014-08-28
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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
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/snes/examples/tutorials/ex28.c.html
src/snes/examples/tutorials/ex70.c.html