[petsc-users] How to use jacobi or Gauss-seilder iteration to solve problem

[Karl Rupp]

Hi,

 > >   KSPSetType(ksp,?);

Jacobi and Gauss-Seidel are available as preconditioners. To use them as 
standalone solvers, make the linear solver run the preconditioner only 
via KSPPREONLY from here:
http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/KSP/KSPType.html
and then set the preconditioner (e.g. PCJACOBI) via PCSetType():
http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/PC/PCType.html


Best regards,
Karli