Projects: Difference between revisions

Jump to navigation Jump to search

Projects (edit)

Revision as of 01:24, 16 September 2020

987 bytes removed ,  16 September 2020
→‎Matlab-compatible ODE solvers in core-Octave: Strip finished items.
Line 81: Line 81:
== Matlab-compatible ODE solvers in core-Octave ==
== Matlab-compatible ODE solvers in core-Octave ==


* <strike> Adapt "odeset" and "odeget" from the odepkg package so that the list of supported options is more Matlab-compatible, in the sense that all option names that are supported by Matlab should be available. On the other hand, Matlab returns an error if an option which is not in the list of known options is passed to "odeset", but we would rather make this a warning in order to allow for special extensions, for example for symplectic integrators. </strike>
* <strike> Adapt the interface of "ode45" in odepkg to be completely Matlab compatible, fix its code and documentation style and move it to Octave-core. </strike>
* <strike> Build Matlab compatible versions of "ode15s" and "ode15i". jwe has prototype implementations [https://savannah.gnu.org/patch/?8102 here] of these built as wrappers to "dassl" and "daspk". An initial approach could be to just improve these wrappers, but eventually it would be better to have wrappers for "IDA" from the sundials library. </strike>
* Improve handling of sparse Jacobians in IDE/DAE solvers
* Improve handling of sparse Jacobians in IDE/DAE solvers
** Currently, in the IDA wrapper function __ode15__ an over conservative guess for the amount of memory to be allocated when assembling a sparse jacobian is used, essentially allocating enough space for a full jacobian then freeing the excess memory, an initial patch for fixing this has been posted on the tracker, for integrating this into Octave it must be generalized to support prior versions of SUNDIALS
** Currently, in the IDA wrapper function __ode15__ an over conservative guess for the amount of memory to be allocated when assembling a sparse jacobian is used, essentially allocating enough space for a full jacobian then freeing the excess memory, an initial patch for fixing this has been posted on the tracker, for integrating this into Octave it must be generalized to support prior versions of SUNDIALS
Retrieved from "https://wiki.octave.org/Special:MobileDiff/13331"

Navigation menu