Changes: 2.1.6

General:

• Added support for Cray X1

• Added option ‘-suggest’ to petscarch script. It suggests some possible PETSC_ARCHes to use

• Installation instructions are rewritten

Vec:

• VecNorm now caches NORM_2

• Added VecStrideScale(), VecStrideGather(), VecStrideScatter()

• Added VecBlockNorm(),VecBlockMax(),VecBlockMin(),VecBlockScale()

Mat:

• The interface to external packages that support direct solvers has been reorganized. This is implemented using new matrix types MATSEQAIJSPOOLES, MATMPIAIJSPOOLES, MATSEQSBAIJSPOOLES, MATMPISBAIJSPOOLES, MATSUPERLU, MATSUPERLU_DIST, MATUMFPACK,MATESSL, MATLUSOL, MATAIJMUMPS, MATSBAIJMUMPS, MATDSCPACK

• Added new convenience matrix types which automatically switch between Seq and MPI implementations depending on the size of the communicator used during creation: MATAIJ, MATBAIJ, MATSBAIJ, MATMAIJ, MATDENSE, MATBDIAG

• Changed default matrix-free compute h to use WP since it uses fewer reductions

• Replace the datatypes MatLUInfo and MatILUInfo by MatFactorInfo

• Added cholesky support to SeqAIJ

• Added support for SUBSET_NONZERO_PATTERN with MatAXPY for AIJ & BAIJ

• Added MatIsSymmetric() for AIJ

• Added LDA support in SeqDense

• The ncols argument made optional in MatGetRow()

• Added MAT_KEEP_ZEROED_ROWS for MPIROWBS

• Removed -aij_oneindex support from AIJ code

• Added MatPartitioningSetPartitionWeights() - usable with ParMetis

• MatGetSubMatrices() now works for ROWBS

PC:

• Added PCICCSetDamping() or -pc_icc_damping

• Added -pc_constant_null_space

• Added PCILUSetShift() or -pc_ilu_shift to support damping using the identity

• Added PCLUSetShift() or -pc_lu_shift to support damping using the identity

• Added PCICCSetShift() or -pc_icc_shift to support damping using the identity

KSP:

• Added a new ksp_type LGMRES

• Added KSPSetComputeSingularValues() support to ksp_type FGMRES

TS:

• Added support for Runge-Kutta using ts_type TS_RUNGE_KUTTA

DMMG:

• -dmmg_jacobian_period -1 => jacobian is frozen after initial construction

DA:

• Allow user preallocation of jacobian using DASetGetMatrix()

• DAGetMatrix now correctly returns the requested type.

• -mat_type typename overloads the requested type for DAGetMatrix

SYS:

• Added new viewer_type PETSC_VIEWER_NETCDF, PETSC_VIEWER_HDF4

• PETSc error handlers now trap many more signals.

Fortran:

• PetscPushErrorHandler() and PetscPopErrorHandler() now supported

• PetscPrintf() and PetscSynchronizedPrintf() now work in fortran with a single string

External Packages:

• Added TSPVodeGetParameters()

• Parmetis-3 support added using MatPartitionSetNParts(), ISPartitionCount()

• MUMPS support added, including complex (using mat_type MATAIJMUMPS, MATSBAIJMUMPS)

• Updated SuperLU_DIST interface to SuperLU_DIST_2.0

• Added Spooles complex support

• Added Spooles cholesky for SeqAIJ

• ADIC: ad_GRAD_MAX is now set in the application and compiled into code when compiling appplication

• The following variable names - in the buildsystem are changed - that correspond with SuperLU_DIST SUPERLUDIST_INCLUDE -> SUPERLU_DIST_INCLUDE SUPERLUDIST_LIB -> SUPERLU_DIST_LIB PETSCHAVE_SUPERLU -> PETSC_HAVE_SUPERLU