Changed petscengine.h to petscmatlab.h
Changed PetscOptionsEList() to return the index of the string selected by the user (error if user enters impossible string)
VecLoad() has a new argument giving the Vector type to be created
If you use MAT_SYMMETRIC as option for MatSetOption() you will likely need to also use the option MAT_SYMMETRY_ETERNAL otherwise at the next MatAssembly the matrix will likly lose the symmetry flag.
Added MatISGetLocalMat() to allow preallocating the local matrix.
changed unmodifiedGramSchmidt name to classicalGramSchmidt everywhere.
Eliminated KSPGMRESIROrthogonalize() now have KSPGMRESSetCGSRefinement() to decide when to use iterative refinement
The SLES object has been removed from PETSc. All of this options are available via the KSP object. For example, -sles_view_binary ->ksp_view_binary, SLESCreate()->KSPCreate() The calling sequences SLESSetUp(sles,b,x) should be replaced with KSPSetRhs(ksp,b) KSPSetSolution(ksp,x) KSPSetUp(ksp). Similarly SLESSolve(sles,b,x) should be replaced with KSPSetRhs(ksp,b) KSPSetSolution(ksp,x) KSPSolve(ksp)
removed its argument from KSPSolve. Obtain the number of iterations via KSPGetIterationNumber()
SNESSolve() no longer returns number of iterations, use SNESGetIterationNumber() to get the number of iterations required
Added support for -dmmg_galerkin and DMMGSetUseGalerkin() for nonlinear problems (not sequential only)
added new PETSC_VIEWER_MATLAB for saving variables to Matlab .mat files
eliminated PetscViewerXXXXType and PetscViewerXXXSetType() replaced with PetscViewerFileType and PetscViewerSetFileType()
PETSC_BINARY_RDONLY,PETSC_BINARY_WRONLY,PETSC_BINARY_CREATE becomes PETSC_FILE_RDONLY,PETSC_FILE_WRONLY,PETSC_FILE_CREATE