Changes: 2.1.0#
Changes#
(See Features below)
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*);to- int MatShellSetOperation(Mat,MatOperation,void(*)());
- Changed - int MatShellGetOperation(Mat,MatOperation,void**);to- int 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*);to- int 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:
Features#
(See Changes above)
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, accessible 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: