[petsc-users] SuperLU options database

[Hong Zhang]

Su :
We provide these via runtime options. With the latest petsc release (v3.4),
you can get
petsc/src/ksp/ksp/examples/tutorials/ex2.c:
./ex2 -pc_type ilu -pc_factor_mat_solver_package superlu -hels |grep superlu
...
  -mat_superlu_ilu_droptol <0.0001>: ILU_DropTol (None)
  -mat_superlu_ilu_filltol <0.01>: ILU_FillTol (None)
  -mat_superlu_ilu_fillfactor <10>: ILU_FillFactor (None)
  -mat_superlu_ilu_droprull <9>: ILU_DropRule (None)
  -mat_superlu_ilu_norm <2>: ILU_Norm (None)
  -mat_superlu_ilu_milu <0>: ILU_MILU (None)

i.e., you can set/change your own options at runtime.

Hong

Hi, I am trying to use the external package SuperLU to solve a linear
> equation with ILUTP preconditioner. But the current PETSc only provides one
> option interface which is MatSuperluSetILUDropTol. There are actually many
> other options as suggested on the manual page of MATSOLVERSUPERLU, such as:
>
> *-mat_superlu_equil*
> *-mat_superlu_ilu_filltol*
> *-**mat_superlu_ilu_fillfactor*
>
> etc. However, they all need to be invoked via command line.
>
> Is there any way to set up other options for SuperLU in the code instead
> of using the command line? Because it's not so convenient to type in all
> those runtime commands every time you run a code.
>
> Thanks a lot.
>
> Su
>
>
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