PETSc version 3.17.4
Fix/Edit manual page

# DMForestGetBaseDM

Get the base DM of a DMForest forest. The forest will be hierarchically refined from the base, and all refinements/coarsenings of the forest will share its base. In general, two forest must share a base to be comparable, to do things like construct interpolators.

### Synopsis

    #include "petscdmforest.h"
    #include "petscdm.h"
    #include "petscdmlabel.h"
    PetscErrorCode DMForestGetBaseDM(DM dm, DM *base)

Not collective

### Input Parameter

| dm | - the forest

### Output Parameter

| base | - the base DM of the forest

### Notes

After DMSetUp(), the base DM will be redundantly distributed across MPI processes

### See Also

DMForestSetBaseDM()

### Level

intermediate

### Location

src/dm/impls/forest/forest.c
Index of all DMFOREST routines
Table of Contents for all manual pages
Index of all manual pages