g -the global 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
DMRestoreGlobalVector() 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 DMCreateGlobalVector().
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/ex1.c.html
src/dm/impls/plex/tutorials/ex7.c.html
src/dm/impls/plex/tutorials/ex1f90.F90.html
src/dm/tutorials/ex12.c.html
src/dm/tutorials/ex51.c.html
src/dm/tutorials/ex11f90.F90.html
src/ksp/ksp/tutorials/ex73.c.html
src/snes/tutorials/ex12.c.html
src/snes/tutorials/ex22.c.html
src/snes/tutorials/ex33.c.html
src/snes/tutorials/ex62.c.html
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages