[petsc-users] Modelica + PETSc?

[Matthew Knepley]

On Mon, Jun 24, 2024 at 10:29 AM Zou, Ling <lzou at anl.gov> wrote:

> This is the website I normally refer to
>
> https://urldefense.us/v3/__https://openmodelica.org/doc/OpenModelicaUsersGuide/latest/solving.html__;!!G_uCfscf7eWS!atB8LuQrlGQnbi8lXYaGJKrUHYTfhXYVS8-QcBlSPWc_cjEPT8rDhboXFr08Hx6cSDhSTlwO2WEXOpoY6C5F$ 
>
>
>
> Looks like DASSL is the default solver.
>
>
That is what I would have guessed. DASSL is a good solver, but quite dated.
I think PETSc can solve those problems, and more scalably. We would be
happy to give advice on conforming to their interface.

  Thanks,

    Matt


> PS: I was playing with Modelica with some toy problem I have, which solves
> fine but could not hold on with the steady-state solution for some reason.
> Maybe I did it wrong, or maybe I am not familiar with the solver. That was
> the reason of the Modelica+PETSc question since I am quite familiar with
> PETSc. Also, the combination seems to be a powerful pair.
>
>
>
> -Ling
>
>
>
> *From: *Matthew Knepley <knepley at gmail.com>
> *Date: *Monday, June 24, 2024 at 6:12 AM
> *To: *Zou, Ling <lzou at anl.gov>
> *Cc: *petsc-users at mcs.anl.gov <petsc-users at mcs.anl.gov>
> *Subject: *Re: [petsc-users] Modelica + PETSc?
>
> On Sun, Jun 23, 2024 at 5: 04 PM Zou, Ling via petsc-users <petsc-users@
> mcs. anl. gov> wrote: Hi all, I am just curious … any effort trying to
> include PETSc as Modelica’s solution option? (Modelica forum or email list
> seem to be quite dead
>
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> On Sun, Jun 23, 2024 at 5:04 PM Zou, Ling via petsc-users <
> petsc-users at mcs.anl.gov> wrote:
>
> Hi all, I am just curious … any effort trying to include PETSc as
> Modelica’s solution option?
>
> (Modelica forum or email list seem to be quite dead so asking here.)
>
>
>
> I had not heard of it before. I looked at the 3.6 specification, but it
> did not sy how the generated DAE were solved, or
>
> how to interface packages. Do they have documentation on that?
>
>
>
>   Thanks,
>
>
>
>     Matt
>
>
>
>
>
> -Ling
>
>
>
>
> --
>
> What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which their
> experiments lead.
> -- Norbert Wiener
>
>
>
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>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://urldefense.us/v3/__https://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!atB8LuQrlGQnbi8lXYaGJKrUHYTfhXYVS8-QcBlSPWc_cjEPT8rDhboXFr08Hx6cSDhSTlwO2WEXOjQrgtOM$  <https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!atB8LuQrlGQnbi8lXYaGJKrUHYTfhXYVS8-QcBlSPWc_cjEPT8rDhboXFr08Hx6cSDhSTlwO2WEXOjlJYUgi$ >
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