petsc-3.12.5 2020-03-29

DMForestSetAdaptivityForest

During the pre-setup phase, set the forest from which the current forest will be adapted (e.g., the current forest will be refined/coarsened/repartitioned from it) im DMSetUp(). Usually not needed by users directly: DMForestTemplate() constructs a new forest to be adapted from an old forest and calls this routine.

Synopsis

#include "petscdmforest.h" 
#include "petscdm.h" 
#include "petscdmlabel.h" 
PetscErrorCode DMForestSetAdaptivityForest(DM dm,DM adapt)

Note that this can be called after setup with adapt = NULL, which will clear all internal data related to the adaptivity forest from dm. This way, repeatedly adapting does not leave stale DM objects in memory.

Logically collective on dm

Input Parameter

	dm	- the new forest, which will be constructed from adapt
	adapt	- the old forest

Level

intermediate

Location

src/dm/impls/forest/forest.c

Examples