petsc-dev 2014-08-28
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DMGetLocalVector

Gets a Seq PETSc vector that may be used with the DMXXX routines. This vector has spaces for the ghost values.

Synopsis

#include "petscdm.h" 
PetscErrorCode  DMGetLocalVector(DM dm,Vec *g)
Not Collective

Input Parameter

dm -the distributed array

Output Parameter

g -the local vector

Note

The vector values are NOT initialized and may have garbage in them, so you may need to zero them.

The output parameter, g, is a regular PETSc vector that should be returned with DMRestoreLocalVector() DO NOT call VecDestroy() on it.

VecStride*() operations can be useful when using DM with dof > 1

Keywords

distributed array, create, local, vector

See Also

DMCreateGlobalVector(), VecDuplicate(), VecDuplicateVecs(),
DMDACreate1d(), DMDACreate2d(), DMDACreate3d(), DMGlobalToLocalBegin(), DMGlobalToLocalEnd(), DMLocalToGlobalBegin(), DMCreateLocalVector(), DMRestoreLocalVector(), VecStrideMax(), VecStrideMin(), VecStrideNorm()

Level:beginner
Location:
src/dm/interface/dmget.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/dm/examples/tutorials/ex6.c.html
src/ksp/ksp/examples/tutorials/ex31.c.html
src/ksp/ksp/examples/tutorials/ex42.c.html
src/ksp/ksp/examples/tutorials/ex43.c.html
src/ksp/ksp/examples/tutorials/ex49.c.html
src/snes/examples/tutorials/ex3.c.html
src/snes/examples/tutorials/ex5.c.html
src/snes/examples/tutorials/ex7.c.html
src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex14.c.html
src/snes/examples/tutorials/ex15.c.html