[CIG-SHORT] Pylith time stepping viscoelastic

[Francisco Delgado]

Hi Tabrez, it's a 3D simulation and it's slow in the sense that it will
take more than 1 day to run the 4 years simulation. The only thing I plan
to change is the chamber time pressurisation, so the stiffness matrix will
not change. Hence, wow can I change the solver?

Thanks

On Wed, May 11, 2016 at 3:55 PM, S Tabrez ALI <stali at geology.wisc.edu>
wrote:

> Which part is currently slow and is this a 2D or 3D case? You can perhaps
> try a sparse direct solver. The first solve will be slow but the rest
> should go fast (assuming the stiffness matrix is not changing).
>
>
> Tabrez
> ------------------------------
> *From:* CIG-SHORT <cig-short-bounces at geodynamics.org> on behalf of
> Francisco Delgado <fjd49 at cornell.edu>
> *Sent:* Wednesday, May 11, 2016 1:26:25 PM
> *To:* cig-short at geodynamics.org
> *Subject:* [CIG-SHORT] Pylith time stepping viscoelastic
>
> Dear Pylith developers
>
> I'm running a viscoelastic simulation of a pressurised magma chamber
> surrounded by a viscoelastic shell with a viscosity of 2*1e16 Pa s, a shear
> modulus of 30 GPa. The latter figures imply a stable time step of 0.0042
> years which will produce a very slow simulation over a period of 4 years in
> terms of computing time. Hence I wonder if there a way to increase the
> simulation speed.
>
> Thanks
>
> --
> --------------------------------------------------------
> Francisco Delgado
> PhD student in Geological Sciences
> Cornell University
>
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>



-- 
--------------------------------------------------------
Francisco Delgado
PhD student in Geological Sciences
Cornell University
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