| -pc_jacobi_type <diagonal,rowmax,rowsum> | - - -pc_jacobi_abs - use the absolute value of the diagonal entry
|
Notes: By using KSPSetPCSide(ksp,PC_SYMMETRIC) or -ksp_pc_side symmetric
can scale each side of the matrix by the squareroot of the diagonal entries.
Zero entries along the diagonal are replaced with the value 1.0
See PCPBJACOBI for a point-block Jacobi preconditioner
See Also
PCCreate(), PCSetType(), PCType (for list of available types), PC,
PCJacobiSetType(), PCJacobiSetUseAbs(), PCJacobiGetUseAbs(), PCPBJACOBI
Level:beginner
Location:src/ksp/pc/impls/jacobi/jacobi.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages
Examples
src/ksp/ksp/examples/tutorials/ex1.c.html
src/ksp/ksp/examples/tutorials/ex7.c.html
src/ksp/ksp/examples/tutorials/ex15.c.html
src/ksp/ksp/examples/tutorials/ex23.c.html
src/ksp/ksp/examples/tutorials/ex58.c.html
src/ksp/ksp/examples/tutorials/ex1f.F.html
src/ksp/ksp/examples/tutorials/ex2f.F.html
src/ksp/ksp/examples/tutorials/ex15f.F.html
src/ksp/ksp/examples/tutorials/ex21f.F.html
src/snes/examples/tutorials/ex74f.F90.html