petsc-3.6.2 2015-10-02
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## PC

- <CONCEPT>registering preconditioners</CONCEPT> Solves a linear system in parallel with KSP.
  Input parameters include:
  -m <mesh_x> : number of mesh points in x-direction
  -n <mesh_n> : number of mesh points in y-direction
- <CONCEPT>setting a user-defined shell preconditioner</CONCEPT> Solves a linear system in parallel with KSP. Also
  illustrates setting a user-defined shell preconditioner and using the
  macro __FUNCT__ to define routine names for use in error handling.
  Input parameters include:
  -user_defined_pc : Activate a user-defined preconditioner
- <CONCEPT>setting a user-defined shell preconditioner</CONCEPT>
  Solves a linear system in parallel with KSP. Also indicates
  use of a user-provided preconditioner. Input parameters include:
  -user_defined_pc : Activate a user-defined preconditioner
- <CONCEPT>setting a user-defined shell preconditioner</CONCEPT>
  Solves a linear system in parallel with KSP. Also indicates
  use of a user-provided preconditioner. Input parameters include: