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.
This is intended to be used for vectors you need for a short time, like within a single function call.
For vectors that you intend to keep around (for example in a C struct) or pass around large parts of your
code you should use DMCreateLocalVector().
VecStride*() operations can be useful when using DM with dof > 1
See Also
DMCreateGlobalVector(), VecDuplicate(), VecDuplicateVecs(),
DMDACreate1d(), DMDACreate2d(), DMDACreate3d(), DMGlobalToLocalBegin(),
DMGlobalToLocalEnd(), DMLocalToGlobalBegin(), DMCreateLocalVector(), DMRestoreLocalVector(),
VecStrideMax(), VecStrideMin(), VecStrideNorm()
Level
beginner
Location
src/dm/interface/dmget.c
Examples
src/dm/impls/plex/tutorials/ex6.c.html
src/ksp/ksp/tutorials/ex42.c.html
src/ksp/ksp/tutorials/ex43.c.html
src/ksp/ksp/tutorials/ex49.c.html
src/ksp/ksp/tutorials/ex69.c.html
src/ksp/ksp/tutorials/ex70.c.html
src/snes/tutorials/ex3.c.html
src/snes/tutorials/ex5.c.html
src/snes/tutorials/ex12.c.html
src/snes/tutorials/ex14.c.html
src/snes/tutorials/ex15.c.html
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages