[petsc-users] MUMPS Metis options

[Pierre Jolivet]

> On 5 Mar 2024, at 2:20 PM, Michal Habera <michal.habera at gmail.com> wrote:
> 
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> Dear all,
> 
> MUMPS allows custom configuration of the METIS library which it uses
> for symmetric permutations using "mumps_par%METIS OPTIONS",
> see p. 35 of https://urldefense.us/v3/__https://mumps-solver.org/doc/userguide_5.6.2.pdf__;!!G_uCfscf7eWS!YlgQB0Z4fqIbHPr0NbNaJZivhlC-hjMLgRjRGox9nvwZQ1ptSyRvtQHlzqAJwdQgbUWP0HpQWM-NV5C0TiKNzA$  <https://urldefense.us/v3/__https://mumps-solver.org/doc/userguide_5.6.2.pdf__;!!G_uCfscf7eWS!aqzhWg_iCZLsu1jTz2sWKIpVkAIDvmvt-_4ojHy5ZtC2eWYBRlCU3zlqh72rGtso5KuDhEuf9yFxMNOGRhHoQBLH_kmf$>.
> 
> Is it possible to provide these options to MUMPS via PETSc API? I can
> only find a way to control integer and real control parameters.

It is not possible, but I guess we could add something like MatMumpsSetMetisOptions(Mat A, PetscInt index, PetscInt value), just like MatMumpsSetIcntl().

Thanks,
Pierre

> -- 
> Kind regards,
> 
> Michal Habera

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