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==============
Changes: 2.2.1
==============
.. rubric:: General:
- Introduced 4 new PETSc data types: PetscInt, PetscErrorCode,
PetscMPIInt and PetscBLASInt. For 99% of users these are just int
or integer*4 and you do **not** need to change your code.
- For users with more than roughly 2 billion unknowns you can run
configure with --with-64-bit-ints and then PetscInt will represent
64 bit integers, long long int in C and integer*8 in Fortran. But
the the other 3 types remain 32 bit (i.e. int in C and integer*4
in Fortran). Now you can index into vectors and matrices with
virtually unlimited sizes.
.. rubric:: Vec:
- VecSetStashInitialSize() -> VecStashSetInitialSize()
- VecConvertMPIToAll() and VecConvertMPIToZero() have been replaced
with VecScatterCreateToAll() and VecScatterCreateToZero()
.. rubric:: IS:
- ISSum() now has a throughput argument instead of one in and one
output.
.. rubric:: Mat:
- MatSetStashInitialSize() -> MatStashSetInitialSize()
- added MatFactorInfoInitialize()
- added MatStashGetInfo()
- added MatGetVecs()
- added MatIsSymmetric(), MatIsTranspose() now take a tolerance flag
for equality (use 0.0 for identical)
- added MatMPIAIJSetPreallocationCSR() and
MatMPIBAIJSetPreallocationCSR()
.. rubric:: PC:
- ICC now uses Manteuffel shift by default
- If matrix is symmetric, PC defaults to ICC when possible, if you
told with MatSetOption(mat,MAT_SYMMETRIC)
- PCSetVector() is gone (no longer needed)
- PCNullSpaceAttach() is gone, use KSPSetNullSpace()
- MatGetSubmatrices() now preserves symmetric flag of original
matrix
- hypre BoomerAMG (-pc_type hypre -pc_hypre_type boomeramg) now uses
one 1 cycle of multigrid as preconditioner (Previously it used
either a decrease in residual of 10^-7 or a maximum of 20
iterations
.. rubric:: KSP:
- Note that a relative residual tolerance now means that \||r_k|\| <
tol*||b|\|
- Removed KSPSetRhs() and KSPSetSolution(), pass
- Added KSPSetNullSpace(), KSPGetNullSpace()
.. rubric:: DA:
- Added DAGetGhostedCoordinates() and DAGetCoordinateDA() (see
src/dm/da/examples/tutorials/ex3.c)
- Added DACoor2d and DACoor3d (see
src/dm/da/examples/tutorials/ex3.c)
- DAGetInterpolation() now provides the correct interpolation for
nonuniform grids using the coordinate information provided with
DASetCoordinates(). (see src/dm/da/examples/tutorials/ex3.c)
.. rubric:: config/configure.py:
- --with-c/f-blas-lapack -> --download-c/f-blas-lapack=yes
- --with-c/f-blas-lapack-if-needed ->
--download-c/f-blas-lapack=ifneeded
- added --download-mpich=yes,no,ifneeded
- added --download-mpich-device=
- added --download-mpich-machines=[machines]
- added configure including download support for hypre, parmetis
- added configure support (without download) to Mumps, UMF,
Superlu,SuperLU_dist,DSCPACK
- Made configure much more robust
.. rubric:: SNES:
- Added -snes_converged_reason
- Added SNESSetRhs(snes,rhs) to allow for solving F(x) = rhs
.. rubric:: TS:
.. rubric:: DMMG:
- Added DMMGSetNullSpace()
.. rubric:: SYS:
.. rubric:: Fortran:
.. rubric:: ExternalPackages:
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