[petsc-users] PCSHELL

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:
>    PCFactorSetMatOrdering() is only effective if the PC is a subclass
>    of PCFactor, for example PCLU is a subclass of PCFactor as are
>    PCILU and PCCHOLESKY and PCICC

One could register their own function without deriving from PCFactor.

  PetscObjectComposeFunction((PetscObject)pc,"PCFactorSetMatOrderingType_C",PCFactorSetMatOrderingType_YourPCShell);
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