DMGlobalToLocalBegin#

Begins updating local vectors from global vector

Synopsis#

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

Neighbor-wise Collective on dm

Input Parameters#

Notes#

The operation is completed with DMGlobalToLocalEnd()

One can perform local computations between the DMGlobalToLocalBegin() and DMGlobalToLocalEnd() to overlap communication and computation

DMGlobalToLocal() is a short form of DMGlobalToLocalBegin() and DMGlobalToLocalEnd()

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

See Also#

DMCoarsen(), DMDestroy(), DMView(), DMCreateGlobalVector(), DMCreateInterpolation(), DMGlobalToLocal(), DMGlobalToLocalEnd(), DMLocalToGlobalBegin(), DMLocalToGlobal(), DMLocalToGlobalBegin(), DMLocalToGlobalEnd()

Level#

intermediate

Location#

src/dm/interface/dm.c

Examples#

src/dm/tutorials/ex1.c.html
src/dm/tutorials/ex3.c.html
src/dm/tutorials/ex5.c.html
src/dm/tutorials/ex6.c.html
src/dm/tutorials/ex7.c.html
src/dm/tutorials/ex9.c.html
src/ksp/ksp/tutorials/ex14f.F90.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/ex70.c.html

Implementations#

DMGlobalToLocalBegin_Composite in src/dm/impls/composite/pack.c
DMGlobalToLocalBegin_DA in src/dm/impls/da/dagtol.c
DMGlobalToLocalBegin_Moab in src/dm/impls/moab/dmmbvec.cxx
DMGlobalToLocalBegin_Network in src/dm/impls/network/network.c
DMGlobalToLocalBegin_Redundant in src/dm/impls/redundant/dmredundant.c
DMGlobalToLocalBegin_Sliced in src/dm/impls/sliced/sliced.c
DMGlobalToLocalBegin_Stag in src/dm/impls/stag/stag.c


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