#include "petscdm.h" #include "petscdmlabel.h" #include "petscds.h" PetscErrorCode DMLocalToGlobal(DM dm,Vec l,InsertMode mode,Vec g)Neighbor-wise Collective on dm
|dm||- the DM object|
|l||- the local vector|
|mode||- if INSERT_VALUES then no parallel communication is used, if ADD_VALUES then all ghost points from the same base point accumulate into that base point.|
|g||- the global vector|
In the ADD_VALUES case you normally would zero the receiving vector before beginning this operation. INSERT_VALUES is not supported for DMDA; in that case simply compute the values directly into a global vector instead of a local one.