Release 3.9.1

• Add Mat.zeroRowsColumnsLocal().

• Add Mat.getISLocalMat().

• Add Mat.convertISToAIJ().

Release 3.9.0

• Update to PETSc 3.9 release.

Release 3.8.0

• Update to PETSc 3.8 release.

Release 3.7.0

• Update to PETSc 3.7 release.

Release 3.6.0

• Update to PETSc 3.6 release.

Release 3.5.1

• Add Log.{begin|view|destroy}().

• Add Mat.SOR() and Mat.SORType.

• Add DMPlex.createCoarsePointIS().

• Add LGMap.createSF().

• Add SNES.getVIInactiveSet().

• Add Vec.isaxpy().

• Add PC.setReusePreconditioner().

• Return correct type in DM.getCoordinateDM().

• Fix SWIG wrappers to handle 64bit PetscInt.

• Fix linker flags for Python from Fink.

Release 3.5

• Update to PETSc 3.5 release.

Release 3.4

• Update to PETSc 3.4 release.

• Add support for DMComposite and DMPlex.

• Change Mat.getSizes() to return ((m,M),(n,N)).

Release 3.3.1

• Fix Options.getAll() mishandling values with negative numbers.

• Minor backward compatibility fix for PETSc 3.2 .

• Minor bugfix for TSPYTHON subtype.

Release 3.3

• Update to PETSc 3.3 release.

• Change Vec.getLocalForm() to Vec.localForm() for use with context manager and add Vec.setMPIGhost().

• Add AO.createMemoryScalable() and LGMap.block() / LGMap.unblock()

• Add Object.handle property (C pointer as a Python integer). Can be used with ctypes to pass a PETSc handle.

• Add Comm.tompi4py() to get a mpi4py communicator instance.

Release 1.2

• Update to PETSc 3.2 release.

• Add new DM class , make DA inherit from DM.

• Better support for inplace LU/ILU and Cholesky/ICC factorization and factor PC subtypes.

• Now the Mat/PC/KSP/SNES/TS Python subtypes are implemented with Cython.

• Better interaction between Python garbage collector and PETSc objects.

• Support for PEP 3118 and legacy Python's buffer interface.

Release 1.1.2

This is a new-features and bug-fix release.

• Add support for copying and computing complements in IS (IS.copy() and IS.complement()).

• Add support for coarsening in DA (DA.coarsen()).

• Support for shallow copy and deep copy operations (use copy.copy and copy.deepcopy). Deep copy is only supported for a bunch of types (IS, Scatter, Vec, Mat)

• Support for pip install petsc4py to download and install PETSc.

Release 1.1.1

This is a new-features and bug-fix release.

• Support for setting PETSC_COMM_WORLD before PETSc initialization.

• Support for coordinates, refinement and interpolation in DA. Many thanks to Blaise Bourdin.

• Workaround build failures when PETSc is built with mpiuni.

• Workaround GIL-related APIs for non-threaded Python builds.

Release 1.1

• Update for API cleanups, changes, and new calls in PETSc 3.1 and some other missing features.

• Add support for Jed Brown's THETA an GL timestepper implementations.

• Fix the annoying issues related to Open MPI shared libraries dependencies and Python dynamic loading.

• Many minor bug-fixes. Many thanks to Ethan Coon, Dmitry Karpeev, Juha Jaykka, and Michele De Stefano.

Release 1.0.3

This is a bug-fix release.

• Added a quick fix to solve build issues. The macro __SDIR__ is no longer passed to the compiler in the command line.

Release 1.0.2

This is a new-features and bug-fix release.

• Now petsc4py works against core PETSc built with complex scalars.

• Added support for PETSc logging features like stages, classes and events. Stages and events support the context manager interface (with statement).

• Documentation generated with Epydoc and Sphinx is now included in the release tarball.

• Removed enumeration-like classes from the petsc4py.PETSc module namespace. For example, now you have to use PETSc.KSP.Type instead of PETSc.KSPType.

• The PETSc.IS to numpy.ndarray conversion now works for stride and block index sets.

• Implemented a more robust import machinery for multi-arch petsc4py installations. Now a wrong value in the PETSC_ARCH environmental variable emit a warning (instead of failing) at import time.

• The unittest-based testsuite now can run under nose with its default options.

• Removed the dependency on numpy.distutils, just use core Python distutils.

Release 1.0.1

This is a bug-fix release. Compile Cython-generated C sources with -Wwrite-strings removed, as this flag (inherited from PETSc) made GCC emit a lot of (harmless but annoying) warnings about conversion of string literals to non-const char pointers.

Release 1.0.0

This is the fist release of the all-new, Cython-based, implementation of PETSc for Python.