DMGlobalToLocal

update local vectors from global vector

Synopsis

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMGlobalToLocal(DM dm, Vec g, InsertMode mode, Vec l)

Neighbor-wise Collective

Input Parameters

• dm - the DM object

• g - the global vector

• mode - INSERT_VALUES or ADD_VALUES

• l - the local vector

Notes

The communication involved in this update can be overlapped with computation by instead using DMGlobalToLocalBegin() and DMGlobalToLocalEnd().

DMGlobalToLocalHookAdd() may be used to provide additional operations that are performed during the update process.

See Also

DM Basics, DM, DMGlobalToLocalHookAdd(), DMCoarsen(), DMDestroy(), DMView(), DMCreateGlobalVector(), DMCreateInterpolation(), DMGlobalToLocalEnd(), DMLocalToGlobalBegin(), DMLocalToGlobal(), DMLocalToGlobalBegin(), DMLocalToGlobalEnd(), DMGlobalToLocalBegin() DMGlobalToLocalEnd()

Level

beginner

Location

src/dm/interface/dm.c

Examples

src/dm/impls/stag/tutorials/ex1.c
src/dm/impls/stag/tutorials/ex3.c
src/dm/impls/stag/tutorials/ex4.c
src/dm/impls/stag/tutorials/ex6.c
src/dm/tutorials/ex2.c
src/snes/tutorials/ex3k.kokkos.cxx

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Index of all DM routines
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Index of all manual pages