petsc-3.7.7 2017-09-25
   
    Documentation: Changes: 2.1.0
    
    
    
      
      General:
      
        - 
          Simpler interface for structured grids, see
          src/snes/examples/tutorials/ex5.c
        
- 
          "System routines" including PLog..., Options..., Viewer...,
          Draw...., FList...,OList... now all begin with the string Petsc. For
          example, PetscOptionsGetInt() and PetscLogBegin().
        
- 
          The calling sequence for PetscMalloc() was changed to return and error
          code and deliver the pointer as a new final argument. Due to this
          change, the macros CHKPTRA() and CHKPTRQ() were dropped.
        
AO (Application Orderings):
      TS (Timestepping Solvers):
      SNES (Nonlinear Solvers):
      SLES (Linear Solvers):
      KSP (Krylov Subspace Methods):
      PC (Preconditioners):
      MAT (Matrices):
      
        - 
          When using MatCreate(), you must follow with a MatSetType() or
          MatSetFromOptions() before using the matrix.
        
- 
          Changed int
            MatShellSetOperation(Mat,MatOperation,void*);toint
            MatShellSetOperation(Mat,MatOperation,void(*)());
- 
          Changed int
            MatShellGetOperation(Mat,MatOperation,void**);toint
            MatShellGetOperation(Mat,MatOperation,void(**)());
- Changed IncompleteCholesky to ICC
DA (Distributed Arrays):
      
        - Changed the DAMG routines to DMMG routines.
- 
          DAGetColoring() now has new second argument that takes either
          IS_COLORING_GLOBAL or IS_COLOR_GLOBAL and a new third argument that
          takes the matrix type of either MATMPIAIJ or MATMPIBAIJ.
        
VEC (Vectors):
      
        - 
          Changed int VecSetOperation(Vec,VecOperation,void*);toint VecSetOperation(Vec,VecOperation,void(*)());
IS (Index Sets):
      General:
      Draw (Graphics):
      Viewers:
      System:
      Error Handling:
      
        - 
          CHKERRA() is now obselete; use CHKERRQ() instead. Changed the calling
          sequence of SETERRQ() to eliminate the second input parameter.
        
Event Logging:
      Fortran Interface:
      
      General:
      
        - Simpler interface for structured grids, see src/snes/examples/tutorials/ex5.c
- 
          Complete infrastructure for parallel multigrid for linear and
          nonlinear problems on structured grids. See
          src/snes/examples/tutorials/ex19.c
        
- Added manual pages for PETSc objects, enums etc.
- 
          Added html version of all source code and examples, accessable from
          docs/index.html and the manual pages.
        
AO (Application Orderings):
      TS (Timestepping Solvers):
      SNES (Nonlinear Solvers):
      SLES (Linear Solvers):
      KSP (Krylov Subspace Methods):
      
        - 
          Added support for "diagonal scaling" of preconditioned
          system as required by most ODE integrators via
          PCDiagonalScaleSet().
        
PC (Preconditioners):
      MAT (Matrices):
      
        - 
          Added the Henry Tufo/Paul Fischer libtfs scalable parallel direct
          solver for MPIAIJ matrices.
        
- Added routine MatFDColoringSetRecompute().
DA (Distributed Arrays):
      
        - 
          Added DAVecGetArray() to access the multidimensional arrays directly in
          the global parallel indexing. See src/snes/examples/tutorials/ex5.c and
          ex19.c
        
- 
          Add DAGetLocalVector()/DARestoreLocalVector() for inexpensive access
          to local work vectors.
        
VEC (Vectors):
      
        - Added DMComposite routines to help with PDE optimization and multicomponent PDEs.
IS (Index Sets):
      PF:
      Draw (Graphics):
      Viewers:
      System:
      Error Handling:
      Event Logging:
      Fortran Interface: