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# Changes: 3.6
```{rubric} General:
```
- User makefiles must be updated. You must change the lines
- include \$\{PETSC_DIR}/conf/variables and
- include \$\{PETSC_DIR}/conf/rules
to
- include \$\{PETSC_DIR}/lib/petsc/conf/variables and
- include \$\{PETSC_DIR}/lib/petsc/conf/rules
- PetscOptionsBool() no longer sets the value of the boolean based
on the value passed in
- Script for running MPIUni jobs is now bin/petsc-mpiexec.uni
- Removed all threadcomm support including --with-pthreadclasses and
--with-openmpclasses configure arguments
- Updated MUMPS version to 5.0.0 - and updated metis to 5.1.0,
parmetis to 4.0.3-p1 - in sync with MUMPS.
- Updated to hypre-2.10.0b, scotch_6.0.3, Elemental-0.85
```{rubric} Configure/Build:
```
- Add toplevel makefile targets *clean* and *distclean*. Target
*clean* deletes PETSc libraries built by makefile target *all*.
Target *distclean* deletes all build files created by *configure*
and \[*make all*\]. Target *clean* in example directories continues
to work as before [deletes object files and executables]
```{rubric} IS:
```
```{rubric} PetscDraw:
```
- PetscDrawBoxedString() changed to PetscDrawStringBoxed() added
PetscDrawBar object for drawing bar graphs added
PetscDrawStringCentered()
```{rubric} PF:
```
```{rubric} Vec:
```
```{rubric} VecScatter:
```
```{rubric} PetscSection:
```
```{rubric} Mat:
```
- MatGetVecs() replaced with MatCreateVecs() because it actually
does create the Vecs that need to be destroyed
- MatCreateMPIAIJConcatenateSeqAIJ and
MatCreateMPIBAIJConcatenateSeqBAIJ replaced with
MatCreateMPIMatConcatenateSeqMat
- MatGetRedundantMatrix() replaced with MatCreateRedundantMatrix()
- Added support for MUMPS sequential solver in Schur complement mode
- MatGetSubMatricesMPI() will extract parallel submatrices on
subcommunicators of the supplied IS objects. Unsorted, but not
repeated indices are okay.
- Removed MatMFFDAddNullSpace() just use MatSetNullSpace()
```{rubric} PC:
```
- Removed -pc_hypre_type euclid due to bit-rot
- Upgraded to SuiteSparse 4.4.1; Cholmod supports using GPUs
(developer repository only feature) --with-cuda
--download-suitesparse-gpu --with-64-bit-indices;
-mat_cholmod_useGPU 1 or 0; 1 by default when configured for it
- Upgraded to Superlu_DIST 4.0; Superlu_DIST supports using GPUs
(developer repository only feature) --with-cuda --with-openmp
--download-superlu_dist-gpu (developer repository only feature)
--with-64-bit-indices -mat_cholmod_useGPU 1 or 0; 1 by default
when configured for it
- Added PCBDDCSetChangeOfBasisMat for user defined change of basis
- PCBDDC: added adaptive selection of constraints: it is available
by command line options
- PCJacobiSetUseAbs() now takes a PetscBool argument allowing
toggling the option
- PCJacobiSetUseRowMax() and PCJacobiSetUseRowSum() have been merged
into PCJacobiSetType()
- PCFactorSetUseInplace() now takes a PetscBool argument. Added
PCFactorGetUseInplace()
- PCFactorSetAllowDiagonalFill() now takes a PetscBool argument.
Added PCFactorGetAllowDiagonalFill()
- PCEisenstatNoDiagonalScaling() changed to
PCEisenstatSetNoDiagonalScaling() and takes a boolean
- Added Interface to AMS solver from HYPRE for Nedelec
discretizations (-pc_hypre_type ams)
- Added Interface to ADS solver from HYPRE for Raviart-Thomas
discretizations (-pc_hypre_type ads)
- Contributed MKL PARDISO interface providing PCCholesky support.
Useable with: -pc_type cholesky -mat_type sbaij
-pc_factor_mat_solver_package mkl_pardiso
- PCGASMSetTotalSubdomains() can now create multirank subdomains if
their number is less than comm size.
- PCGAMGSetReuseProl() is changed to PCGAMGSetReuseInterpolation()
```{rubric} KSP:
```
- Removed KSPSetNullSpace() always use MatSetNullSpace() provided to
the FIRST matrix argument to KSPSetOperators(), or
SNESSetJacobian(), or TSSetIJacobian()
- Added MatSetTransposeNullSpace() to indicate the null space of the
transpose operator
- Removed KSPSPECEST since its functionality is replaced by the
esteig functionality within KSPChebyshev
- Unified KSPChebyshev routines that work with estimating
eigenvalues with the prefix name KSPChebyshevEstEig... For example
KSPChebyshevSetEstimateEigenvalues() is now
KSPChebyshevEstEigSet() and
KSPChebyshevSetEstimateEigenvaluesRandom() is now
KSPChebyshevEstEigSetRandom() similarly
-ksp_chebyshev_estimate_eigenvalues_random is
-ksp_chebyshev_esteig_random. The previous for the (GMRES) KSP
used to estimate the eigenvalues is now esteig\_ not est\_
- KSPGetVecs() replaced with KSPCreateVecs() because it actually
does create the Vecs that need to be destroyed
```{rubric} SNES:
```
- Added KSPMonitorSNES() with command line option -ksp_monitor_snes
and -ksp_monitor_snes_lg to monitor SNES residual norm at each
linear iteration SNESMonitorVI() becomes SNESVIMonitor()
- Added SNESVIMonitorResidual() and -snes_vi_monitor_residual
```{rubric} SNESLineSearch:
```
```{rubric} TS:
```
- The postevent routine set with TSSetEventMonitor() now takes an
additional PetscBool argument 'forwardsolve'. The forwardsolve
flag is used to distinguish between a TS forward solve
(forwardsolve = 1) and adjoint solve (forwardsolve = 0).
- Added TSAdjointSolve() for adjoint sensitivity analysis
- EquationType is introduced to distinguish between ODEs and DAEs.
It needs to be set accordingly before solving the problem through
TSSetEquationType(). It currently only affects arkimex methods.
```{rubric} DM/DA:
```
- DMCreateInjection() now returns a Mat, rather than a VecScatter
- The MatType argument is removed from DMCreateMatrix(), you can use
DMSetMatType() to indicate the type you want used with a DM,
defaults to MATAIJ
- You can now use DMDASetAOType() to indicate the type of AO you
want used with a DMDA (defaults to AOBASIC)
```{rubric} DMPlex:
```
- Can now redistribute parallel meshes
- Can now increase the overlap of parallel meshes
- Added new mesh formats, Fluent CAS and Gmsh
```{rubric} PetscViewer:
```
- HDF5 viewer will save Vecs and DMDA Vecs with a dimension of 1 if
the bs/dof of the vector is 1. To always include this dimension as
a specific dimension in the HDF5 file even if it is of size 1
use PetscViewerHDF5SetBaseDimension2() or
-viewer_hdf5_base_dimension2 true
```{rubric} SYS:
```
- PetscOptionsHead() now takes a PetscOptions argument.
- PetscObjectAddOptionsHandler() now takes an event handler that
includes a PetscOptions argument.
PetscObjectProcessOptionsHandlers() requires this as input.
```{rubric} AO:
```
```{rubric} Fortran:
```
- Fortran include files are now in include/petsc/finclude instead of
include/finclude. Thus replace uses of #include "finclude/xxx.h"
with #include "petsc/finclude/xxx.h". Reason for change: to
namespace the finclude directory with PETSc for --prefix installs
of PETSc and for packaging systems
|
