Plex: Silence compiler warning

Plex: Remove superfluous argument from DMPlexDisitrbute()

Merge branch 'knepley/feature-plex-label-output' into mlange/feature-parallel-distribute

Conflicts:
src/dm/impls/plex/plexdistribute.c

Plex: Add performance and debug logging

Plex: Remap pointSF after building distributed overlap

This establishes the full migration pattenm for DMPlexDistribute().

Plex: Create partition overlap from distributed non-overlapping DM

This commit adds DMPlexDistributeOverlap, which computes the partition
overlap from an already distributed non-overlapping DM and b

Plex: Create partition overlap from distributed non-overlapping DM

This commit adds DMPlexDistributeOverlap, which computes the partition
overlap from an already distributed non-overlapping DM and builds the
correct parallel DM and it's pointSF. This is significantly faster when
FEM adjacency is used with overlap=1.

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DMLabel: Switch to using SF for distributing labels

Label distribution is now performed by creating a point-wise array of
stratum depths, migrating it over the given SF and re-constructing the
label

DMLabel: Switch to using SF for distributing labels

Label distribution is now performed by creating a point-wise array of
stratum depths, migrating it over the given SF and re-constructing the
label points on the receiver.

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Plex: Add routine to generate the migration SF from overlap SF

The migration SF re-maps local points and adds remote contributions from
the overlap SF generated by DMPlexCreateOverlap.

Plex: Turn remote overlap contributions into an SF

Local root donation and remote overlap contributions do not need to be
returned from DMPlexCreateOverlap. Instead we turn remote contributions
into

Plex: Turn remote overlap contributions into an SF

Local root donation and remote overlap contributions do not need to be
returned from DMPlexCreateOverlap. Instead we turn remote contributions
into an unordered SF.

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Plex: Move tree setup into its own subroutine

Plex: Move hybrid setup into its own subroutine

Plex: Move label and coordinate migration into their own subroutines

Plex: Move pointSF generation into its own subroutine

Plex: Move cone migration into its own subroutine

Merge branch 'knepley/feature-plex-partitioner-shell' into mlange/feature-parallel-distribute

Merge branch 'knepley/feature-parallel-partition' into mlange/feature-parallel-distribute

Conflicts:
include/petscdmplex.h

Partitioner+Plex: Added PetscPartitioner class
- Plex holds a PetscPartitioner
- Changed args so that PetscSections are modified, not created (also of DMPlexEnlargePartition)
- Now partition routine

Partitioner+Plex: Added PetscPartitioner class
- Plex holds a PetscPartitioner
- Changed args so that PetscSections are modified, not created (also of DMPlexEnlargePartition)
- Now partition routine takes a number of partitions instead of assuming commSize
- Added a shell partitioner intended to be used for regression testing

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Plex+Label: Added output flag for labels
- Meant storing labels in a struct inside Plex
- Added DMPlexGetLabelByNum()
- Added DMPlexGet/SetLabelOutput()
- Got rid of most of the mucking with the inte

Plex+Label: Added output flag for labels
- Meant storing labels in a struct inside Plex
- Added DMPlexGetLabelByNum()
- Added DMPlexGet/SetLabelOutput()
- Got rid of most of the mucking with the internal label storage

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Plex: Needs custom Fortran binding

Plex: Fix distribution for meshes without coordinates

Plex: Added methods to support distributed overlap calculation
- Added DMPlexCreateTwoSidedProcessSF()
- Added DMPlexDistributeOwnership()
- Added DMPlexCreateOverlap()

Plex: Added DMPlexDistributeFieldIS()
- Small doc fix

Merge branch 'tisaac/feature-fe-geom-dim' into tisaac/plex-flexible-projection

Use the new PetscFECellGeom

Conflicts:
include/petscdmplex.h
include/petscfe.h
src/dm/impls/plex/plexfem.c

Merge branch 'tisaac/thplex'

This merge brings in related work in the following areas:
- Added a local constraint matrix to DM (see DMSetDefaultConstraints())
- Added point-to-anchor-point constrain

Merge branch 'tisaac/thplex'

This merge brings in related work in the following areas:
- Added a local constraint matrix to DM (see DMSetDefaultConstraints())
- Added point-to-anchor-point constraints in DMPlex (see
DMPlexSetAnchors()), which build on the DM constraints
- Added hierarchically-constrained points to DMPlex (see
DMPlexSetReferenceTree(), DMPlexSetTree()), which builds on the anchor
constraints
- Tests for these constraints in src/dm/impls/plex/examples/ex3.c (try
runex3_* examples in that directory)
- Added quadrature order (see PetscQuadratureGet/SetOrder()) (work by
Matt Knepley)
- Added default return values for DMGetCoordinateDim() (defaults to
DMGetDimension())

Conflicts:
include/petscdmplex.h
src/dm/dt/interface/dt.c
src/dm/impls/plex/examples/tests/ex3.c
src/dm/impls/plex/makefile
src/dm/impls/plex/plexfem.c

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Plex: continue rename of Constraints to Anchors