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## Re: DAE daspk solver problem

**From**: |
c. |

**Subject**: |
Re: DAE daspk solver problem |

**Date**: |
Sat, 29 Oct 2016 09:02:01 +0200 |

On 28 Oct 2016, at 19:17, SunilShah <address@hidden> wrote:
>* For large scale problems, (> 1e5 variables), retaining sparsity is an*
>* important issue, so DASPK structure can offer some advantages. Even when*
>* the equations can be symbolically transformed, symbolic manipulation may not*
>* scale well (perhaps the problem with scaling in Modelica), or may destroy*
>* sparsity and therefore have inefficient discrete propagation.*
Unfortunately the sparsity is not exploited in the Octave interface.
>* Lastly, the fortran DASPK / DASKR can take advantage of implicit sparse*
>* solvers. Do octave implementations allow this?*
No, AFAIK there is no option in Octave to invoke the matrix-free iterative
solver
in DASPK from Octave.
c.

**DAE daspk solver problem**, *Lazy_Tom*, `2016/10/26`
**Re: DAE daspk solver problem**, *Sebastian Schöps*, `2016/10/27`
**Re: DAE daspk solver problem**, *Lazy_Tom*, `2016/10/27`
**Re: DAE daspk solver problem**, *Sebastian Schöps*, `2016/10/28`
**Re: DAE daspk solver problem**, *Bill Greene*, `2016/10/28`
**Re: DAE daspk solver problem**, *Lazy_Tom*, `2016/10/29`
**Re: DAE daspk solver problem**, *Sebastian Schöps*, `2016/10/29`
**Re: DAE daspk solver problem**, *SunilShah*, `2016/10/28`
**Re: DAE daspk solver problem**, *Bill Greene*, `2016/10/28`
**Re: DAE daspk solver problem**, *SunilShah*, `2016/10/28`
**Re: DAE daspk solver problem**,
*c.* **<=**
**Re: DAE daspk solver problem**, *Lazy_Tom*, `2016/10/29`