PETSc
    
    
    
    
    
    
    
      
      General:
      
        - No longer support PETSC_ARCH=sun4
- The macros in petscconf.h now begin with PETSC_
- 
          PetsReal()andPetscImaginary()are nowPetscRealPart()PetscImaginaryPart()
- 
          -optionstable -> -options_table -optionsleft -> -options_left
          but old left for compatibility
        
AO (Application Orderings):
      TS (Timestepping Solvers):
      
        - 
          TSSetMonitor()now takes an additional final optional
          argument that monitor context.
SNES (Nonlinear Solvers):
      
        - SNES_EQ_LS etc changed to drop _, for example SNESEQLS
- 
          Changed calling sequence of SNES monitoring routines to add an
          additional output parameter indicating why it converged or
          diverged.
        
- 
          Added additional final argument to SNESSetMonitor()an optional destroy routine for the monitor context.
- 
          Changed calling sequence of MatSNESMFAddNullSpace()to takePCNullSpaceobject rather than array of
          vectors.
- 
          Added final ctx argument to SNESGetFunction(),SNESGetGradient()andSNESGetMinimizationFunction()
SLES (Linear Solvers):
      
        - See PC and KSP
- 
          SLESSolveTrans()is nowSLESSolveTranspose()
- 
          SLESSolve()now ALWAYS returns a 0 or positive iteration
          count. CallKSPGetConvergedReason()to see if converged
          or diverged and why.
KSP (Krylov Subspace Methods):
      
        - 
          Added additional final argument to KSPSetMonitor()an optional destroy routine for the monitor context.
- KSPSolvetrans()is now- KSPSolveTranspose()
- 
          Added flexible gmres (use fgmres or KSPFGMRES as the type) see
          KSPFGMRESSetModifyPC()for one way to change PC at
          each iteration.
PC (Preconditioners):
      
        - 
          MGSetRestriction()andMGSetInterpolation()now accept PETSc figures out which one it is based on the number of
          rows and columns. Now you don't need to use the Shell matrices if you
          computed it "the other way then PETSc use to expect".
- PCApplyTrans()is now- PCApplyTranspose()
- 
          options -pc_ilu_mat_ordering_type <nd,...> and
          -pc_lu_mat_ordering_type <nd,...> now set the ordering type.
        
MAT (Matrices):
      
        - 
          Added two additional arguments to MatCreate(MPI_Comm comm,int
            m,int n,int M,int N,Mat *)where m and n are the local
          ownership sizes. To get the effect of the oldMatCreate()use m and n equal to PETSC_DECIDE
- 
          Changed MatSetLocalToGlobalMappingBlocked()toMatSetLocalToGlobalMappingBlock()so that it would
          be less then 32 characters long.
- 
          MatSolveTrans()andMatSolveTransAdd()are
          nowMatSolveTransposeXXX()MatMultTrans()andMatMultTransAdd()are nowMatMultTransposeXXX()
- 
          MatCreateMPIAdj()changed toMatCreateMPICSR();MatCreateSeqAdj()dropped.
- 
          Another MatSetOption(),MAT_IGNORE_ZERO_ENTRIESfor
          AIJ matrices withADD_VALUES.
- 
          added matrix option MAT_KEEP_ZEROED_ROWScauses
            MatZeroRows()to keep the original nonzero data structure and
          just put 0.0 into the elements that are to be zeroed. Without this
          option it removes the locations from the nonzero structure.
DA (Distributed Arrays):
      VEC (Vectors):
      
        - Added VecGetArray2d() and VecRestoreArray2d()
IS (Index Sets):
      
        - 
          Added second argument to ISInvertPermutation() that indicates
          how many indices are to be  stored on that processor; ignored for one
          processor code. If you useISInvertPermutation()  simply add
          a second argument ofPETSC_DECIDE.
Draw (Graphics):
      
        - DrawHistxxx changed to DrawHGxxx
Viewers:
      System:
      
        - 
          Routines XXXRegister() are now XXXRegisterDynamic() used for
          registering new object types in dynamic libraries and
          XXXRegister_Private() is now XXXRegister() used to register new
          object types whose definitions are in the exectuable.
        
- 
          The final argument to OptionsHasName() and
          OptionsGetXXX() is a PetscTruth * instead of an
          int*
        
- PETSc functions and objects that began with Table now begin with PetscTable
- 
          Changed these routines to return an error code.  extern int
          PetscStrchr(const char[],char,char **); extern int PetscStrrchr(const
          char[],char,char **); extern int PetscStrstr(const char[],const
          char[],char **); extern int PetscStrtok(const char[],const
          char[],char **); extern int PetscStrlen(const char[],int *); added
          PetscStrallocpy(const char[],char **); PetscStrncmp() and
          PetscStrcasecmp() now return PETSC_TRUE as a final argument if the
          strings match else PETSC_FALSE. Note this means removing ! from your
          current tests and adding it where you don't have it.
        
- PetscMemcmp() now has a final argument of true for matching memories.
- 
          The Fortran versions of the PetscStrxxx() and PetscMemxxx() routines
          also now have the error flag as the final argument
        
- 
          PetscFree() now always returns an error code that may be checked with
          CHKERRQ().  On systems where free() returns a void (and the user has
          no access to an error condition in free(), PetscFree() returns 0 i.e.
          no error; on other systems it returns the error number from
          free.
        
- The BT bitarray macros are now prefixed with PetscBT
Error Handling:
      Event Logging:
      Fortran Interface:
      
      General:
      
        - 
          When doing string substitutions in library directory paths etc one
          must use ${PETSC_DIR} ${BOPT} etc now instead of $PETSC_DIR etc. Also
          you can put anything in {anything} as long as it is an environmental
          variable or passed in the options database with -anything
        
- 
          Added PetscEmacsclientErrorHandler() -on_error_emacs [machinename] to
          allow emacs to jump to error; can be used with any other error
          handler.
        
- 
          So long as you have defined the macro __FUNC__ "main" before your
          main C/C++ subroutine you can use SETERRQ() and CHKERRQ() instead of
          SETERRA(), CHKERRA().
        
AO (Application Orderings):
      TS (Timestepping Solvers):
      SNES (Nonlinear Solvers):
      
        - 
          Added SNESSetLineSearchParams()andSNESGetLineSearchParams(), contributed by Matt
          Knepley.
- 
          Added SNESGetConvergedReason()to find out if
          aSNESSolve()has converged/diverged and why
- 
          Added SNESMonitorVecUpdate()and
          -snes_vecmonitor_update to display the Newton update at each
          iteration.
SLES (Linear Solvers):
      
      KSP (Krylov Subspace Methods):
      
        - 
          Added -ksp_gmres_krylov_monitor and
          KSPGMRESKrylovMonitor()to allow one to view the
          vectors in the Krylov space.
PC (Preconditioners):
      
        - 
          We now provide a drop tolerance based ILU for SeqAIJ matrix format
          via Yousef Saad's SPARSEKIT2 software. Use -pc_ilu_use_drop_tolerance
          <dt,dtcol,rowmax> or
          PCILUSetUseDropTolerance(pc,dt,dtcol,rowmax).
MAT (Matrices):
      DA (Distributed Arrays):
      VEC (Vectors):
      IS (Index Sets):
      Draw (Graphics):
      
        - DrawCreate()and- DrawOpenX()now can take
Viewers:
      
        - 
          Added ViewerASCIIUseTabs()to allow turning off
          tabbing during certain viewer operations.
- 
          Added ViewerGetSingleton(), ViewerRestoreSingleton()
          to allow managing the calling a a sequential viewer from within
          a parallel viewer.
- Added ViewerASCIISynchronizedPrintf(viewer,....)
- 
          Binary and ASCII viewers can create compressed files by simply
          appending a .gz on the filename.
        
- 
          PETSc now has a new viewer that generates rudimentary Postscript.
          Improvements, additions may be added as needed.
          DrawOpenPS(), orDrawSetType(,DRAW_PS);or -draw_type ps
System:
      
        - 
          using -trdump with PETSC_USE_STACK compile option (default for
          BOPT=g*) will print the entire stack for each malloc, allow one to
          more easily track down where mallocs where made that where not
          freed.
        
- Added PetscSum_Op to replace MPI_SUM for reductions with MPIU_SCALAR
- Added PetscMaxSum_Op to do max on first half of entries and sum on second half.
- Added CHKMEMQ and CHKMEMA macros to help track down memory corruption.
Error Handling:
      Event Logging:
      Fortran Interface:
      
        - Added Fortran 90 interface support for HP Convex and Solaris.machine.