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CHANGES: PETSc for Python

Author: Lisandro Dalcin
Contact: [email protected]

Release 3.12.0

  • Update to PETSc 3.12 release.

Release 3.11.0

  • Update to PETSc 3.11 release.

Release 3.10.1

  • Fix for removal of SNESTEST.

  • Fix Mat in-place divide.

    Release 3.10.0

  • Update to PETSc 3.10 release.

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.