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# Changes: 2.1.5

General:

- Replace autoconf-configure with python-configure. Tested on Linux, IRIX, Alpha-OSF, Mac OSX

- Added PETSc interface to UMFPACK (Seq)

- SuperLU & SuperLU_DIST insterface is updated to the latest download versions. Complex version of these packages are now supported.

- Added Support for QR factorization into PETSc/SPOOLES interface (Seq)

- Added Support for installing PETSc with TAU instrumentation package. Please check config files in bmake/linux_tau.

- Added support for Cray SX-6 vector machine

Vec:

- Added VecMaxPointwiseDivide()

Mat:

- Added MatTranspose() for SBAIJ

- Added MatConvert_SeqAIJ_SeqSBAIJ()

- Added MatGetInertia()

- Added MatAXPY() to SBAIJ and BAIJ mat formats

- Added MatSetValuesBlocked() for SEQSBAIJ and MPISBAIJ formats

- Improved single precision SSE factorization routines

- Added scalable parallel binary viewer for MPIAIJ matrix

SLES:

- Added ICC preconditioner support for MATSEQAIJ

- PCSetUp() now defaults to ICC for SBAIJ

- BoomerAMG preconditioner now defaults to zero initial guess

- Added GetTotalBlocks() and GetLocalBlocks() to PCBJacobi

- Improved LU and ILU damping for AIJ matrix type - New factorization damping policy (check manual)

SNES:

TS:

- Added TSGetDuration()

Other:

- Turned off logging of objects and actions by default - saves memory usage

- Reduce memory usage for DA and SDA objects

- Support generation of SBAIJ matrices from DA

Fortran:

- Added f90 support for intel compilers on linux and linux64