# Changes: 3.13

```{rubric} General:
```

- Update `make test` to run the full test suite. Use
  `make check` to run the short test
- Remove last PetscBool argument from PetscBinaryWrite() and
  PetscBinarySynchronizedWrite()
- Change PetscLayoutFindOwner() and PetscLayoutFindOwnerIndex() to
  return a PetscMPIInt instead of a PetscInt
- Support for Compaq F90 is removed along with supporting flags
  PETSC_HAVE_FORTRAN_STDCALL, PETSC_BLASLAPACK_STDCALL,
  HAVE_FORTRAN_MIXED_STR_ARG
- Promote all example directories `examples/tutorials/` and
  `examples/tests/` to `tutorials/` and `tests/` respectively
- Make title argument of PetscOptionsBegin() obligatory

```{rubric} Configure/Build:
```

```{rubric} IS:
```

- Add ISSetInfo(): set local and global properties of an IS (whether
  the IS is sorted, unique, a permutation, an interval, or identity)
- Add ISGetInfo(): query local and global properties of an IS

```{rubric} PetscDraw:
```

```{rubric} PetscSF:
```

- Fix few bugs in PETSCSFWINDOW when using PETSCSF_WINDOW_SYNC_LOCK
  or PETSCSF_WINDOW_SYNC_ACTIVE synchronization types
- Add window reusage for PETSCSFWINDOW and support for different
  creation flavor types. See PetscSFWindowFlavorType man page for
  details
- Set default of -use_gpu_aware_mpi from false to true

```{rubric} PF:
```

```{rubric} Vec:
```

- VecPinToCPU() is deprecated in favor of VecBindToCPU()
- Add Vec{Set|Get}PinnedMemoryMin() and -vec_pinned_memory_min
  option. Note that VECCUDA now defaults to using pinned memory for
  host allocations

```{rubric} VecScatter:
```

```{rubric} PetscSection:
```

```{rubric} PetscPartitioner:
```

- PetscPartitionerPartition() does not longer gets a DM as input.
  Vertex weights can be specified through PetscSection
- Add support for target partition weights for
  PETSCPARTITIONERSIMPLE, PETSCPARTITIONERPARMETIS and
  PETSCPARTITIONERPTSCOTCH

```{rubric} Mat:
```

- Improve the performance of MatConvert_AIJ_BAIJ by preallocating
  the Mat before dispatching to MatConvert_Basic
- Change the behavior of MatConvert_AIJ_SBAIJ for block size greater
  than one, the block structure is now preserved (even for the
  diagonal entries)
- Fix various bugs related with matrix conversions from Hermitian
  SBAIJ matrices with complex numbers
- Add MatPropagateSymmetryOptions to propagate symmetry information
  from one matrix to another
- Fix a bug in MATSUPERLU_DIST interface when MATMPIAIJ with
  commsize 1 is used
- Add MATCHOLMOD support for block solves
- --download-suitesparse now uses the official SuiteSparse
  repository
- MatPinToCPU() is deprecated in favor of MatBindToCPU()
- Fix MatAXPY for MATSHELL
- MatAXPY(Y,0.0,X,DIFFERENT_NONZERO_PATTERN) no longer modifies the
  nonzero pattern of Y to include that of X
- Add support of selective 64-bit MUMPS, i.e., the regular/default
  build of MUMPS. One should still build PETSc --with-64-bit-indices
  to handle matrices with >2G nonzeros
- Add MatProductCreate(), MatProductCreateWithMat(),
  MatProductSetType(), MatProductSetAlgorithm(),
  MatProductSetFill(), MatProductSetFromOptions(),
  MatProductSymbolic(), MatProductNumeric(),
  MatProductReplaceMats(), MatProductClear()
- Deprecate MatMatMultSymbolic(), MatMatMultNumeric()
- Deprecate MatMatTransposeMultSymbolic(),
  MatMatTransposeMultNumeric()
- Deprecate MatPtAPSymbolic(), MatPtAPNumeric()
- Deprecate MatRARtSymbolic(), MatRARtNumeric()
- Fix a deadlock with MATELEMENTAL; if one configures PETSc with
  Elemental *and* has PETSC_COMM_WORLD != MPI_COMM_WORLD, it is now
  one's responsability to explicitly call
  PetscElementalInitializePackage()/PetscElementalFinalizePackage()
  outside of PetscInitialize()/PetscFinalize().
  PetscElementalInitializePackage()/PetscElementalFinalizePackage()
  are collective on MPI_COMM_WORLD.

```{rubric} PC:
```

- Change the default behavior of PCASM and PCGASM to not
  automatically switch to PCASMType BASIC if the matrices are
  symmetric
- Change the default behavior of PCCHOLESKY to use nested dissection
  ordering for AIJ matrix

```{rubric} KSP:
```

- Add KSPHPDDMGetDeflationSpace and KSPHPDDMSetDeflationSpace for
  recycling Krylov methods in KSPHPDDM

```{rubric} SNES:
```

- Deprecate `-snes_test_jacobian_display` and
  `-snes_test_jacobian_display_threshold`. `-snes_test_jacobian`
  accepts an optional threshold parameter (since v3.10) and
  `-snes_test_jacobian_view` should be used in favor of
  `-snes_test_jacobian_display`

```{rubric} SNESLineSearch:
```

- Add SNESLineSearchGetType() in v3.13.1.

```{rubric} TS:
```

```{rubric} TAO:
```

- TAOPDIPM: A new solver in TAO for general NLP problems

```{rubric} DM/DA:
```

- DMCopyLabels(): add two additional input flags
- DMPlexDistribute(): fix a bug associated with vertex partition
  weights and overlapped meshes
- DMPlexDistribute(): vertex partition weights are now computed by
  summing all the local section dofs in the transitive closure of
  each cell
- Add PetscTabulation to hold function tabulation data
- Add DMEnclosureType to describe relations between meshes
- Add DMGetEnclosureRelation() and DMGetEnclosurePoint() to discover
  relations between meshes
- Add DMPolytopeType to describe different cell constructions

```{rubric} DMPlex:
```

- DMPlexInterpolate() now works correctly for distributed DMPlex
- The idea of hybrid and ghost cells has been removed from Plex in
  favor of cell type
- Plex can now classify points by cell type, stored in a DMLabel.
  This is useful for operations that require more than topological
  data, such as mesh interpolation, geometric calculations, and is
  also used an index to avoid repeated topological queries
- Add DMPlexSetCellType() and DMPlexCreateReferenceCellByType()
- Distribution sorts strata by cell type.
- Plex can now allow any number of cell types in a single mesh.
  Interpolation, refinement, and extraction of submeshes mixed
  meshes work smoothly. Both oriented and tensor-product prisms can
  be used in the same mesh
- Cell refiners have been abstracted. Currently there are two
  (regular refinement, and conversion to hexes). The plan is to add
  more, such as local extrusion and conversion to simplices
- Remove SimplexToTensor in favor of DM_REFINER_TO_BOX
- DMForest now responds to DMPlexGetOverlap() and propagates its
  overlap to the underlying Plex
- Add DMPlexGetSimplexOrBoxCells() to replace
  DMPlexGetInteriorCellStratum()
- Add DMPolytopTypeGetDim(), DMPolyTopeTypeGetConeSize(),
  DMPolytopeTypeGetNumVertices()
- Add DMLabelSetStratumBounds()
- Add DMPlexOrientCell() which orients a single cell
- Add DMPlexCompareOrientations() which compares the cone point
  order of a single cell with the given reference cone
- Add DMPlexIsInterpolated() which finds out whether the plex is
  interpolated
- Add DMPlexIsInterpolatedCollective() which finds out whether the
  plex is interpolated on all ranks
- Add DMPlexIsDistributed() which finds out whether the plex is
  distributed

```{rubric} DMNetwork:
```

- Add DMNetworkSetComponentNumVariables(),
  DMNetworkGetComponentVariableOffset(), and
  DMNetworkGetComponentVariableGlobalOffset() to set number of
  variables for a component, and retrieve its local/global offsets.

```{rubric} DT:
```

- All tabulated data is now stored in PetscTabulation structures.
  This changes interfaces in PetscDS, PetscFE, and PetscFV
- Rename DefaultTabulation to CellTabulation everywhere
- PetscDTGaussJacobiQuadrature() is now truly Gauss-Jacobi
  quadrature. The quadrature for the simplex (without weight
  function) is now called PetscDTStroudConicalQuadrature()
- Add PetscDTJacobiEval(), PetscDTGaussLobattoJacobiQuadrature()
- Add PetscDTIndexToBary() and PetscDTBaryToIndex() for barycentric
  lattice calculations
- Add PetscDTNodeType to enumerate methods of defining interpolation
  nodes
- PetscDualSpace now has PetscDualSpaceSetFormDegree() and
  PetscDualSpaceGetFormDegree() for governing functional
  pushforward/pullback behavior
- PETSCDUALSPACELAGRANGE now has PetscDualSpaceGetTrimmed() and
  PetscDualSpaceSetTrimmed() for creating degrees of freedom for
  trimmed polynomial spaces
- PETSCDUALSPACELAGRANGE now has PetscDualSpaceGetNodeType() and
  PetscDualSpaceSetNodType() for controlling the placement of
  interpolation nodes
- PETSCDUALSPACEBDM is no longer a standalone type of
  PetscDualSpace: it is now a constructor alias for
  PETSCDUALSPACELAGRANGE

```{rubric} PetscViewer:
```

- Remove last PetscBool argument from PetscViewerBinaryWrite()
- Add "fieldnum" argument to PetscViewerVTKAddField() to indicate
  only one field of the vector should be viewed

```{rubric} SYS:
```

- Rename PetscSignalSegvCheckPointer() to
  PetscSignalSegvCheckPointerOrMpi()

- Extend -info option controlling PetscInfo(). It now takes takes
  optional arguments
  `-info [filename][:[~]list,of,classnames[:[~]self]]`. See
  PetscInfo() manpage

- Add new API to control PetscInfo() programatically:

  - Add PetscInfoEnabled() - Indicate whether a given PETSc class
    is allowed in PetscInfo()
  - Add PetscInfoSetFile() - Set output destination of PetscInfo()
  - Add PetscInfoGetFile() - Get output destination of PetscInfo()
  - Add PetscInfoSetClasses() - Sets the classes which PetscInfo()
    is filtered for/against
  - Add PetscInfoGetClass() - Indicates whether the provided
    classname is marked as a filter in PetscInfo() as set by
    PetscInfoSetClasses()
  - Add PetscInfoProcessClass() - Activates or deactivates a class
    based on the filtering status of PetscInfo()
  - Add PetscInfoGetInfo() - Returns the current state of several
    indicator flags for PetscInfo()
  - Add PetscInfoSetFilterCommSelf() - Sets PetscInfoCommFlag enum
    to control communicator size filtering for PetscInfo()
  - Add PetscInfoDestroy() - Destroys and resets internal
    PetscInfo() filter options
  - Change PetscInfoAllow() to only activate/deactivate
    PetscInfo(), file setting is now handled separately by
    PetscInfoSetFile()

- Add PetscSubcommGetParent() - Gets the communicator that was used
  to create the PetscSubcomm

- Add PetscSubcommGetContiguousParent() - Gets a communicator that
  that is a duplicate of the parent but has the ranks reordered by
  the order they are in the children

- Add PetscSubcommGetChild() - Gets the communicator created by the
  PetscSubcomm

- Change the default option of -build_twosided from ibarrier to
  allreduce for communicators with no more than 1024 ranks

```{rubric} AO:
```

```{rubric} Sieve:
```

```{rubric} Fortran:
```