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.
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
|dm ||- the new forest, which will be constructed from adapt
|adapt ||- the old forest
Index of all DMFOREST routines
Table of Contents for all manual pages
Index of all manual pages