[Trilinos-Users] [Trilinos-Bugs] Request of information

[Bartlett, Roscoe A]

Michele,

The MOOCHO package (Trilinos/packages/moocho) can solve general non-convex nonlinear unconstrained optimization problems using a BFGS line-search method.  I think the general optimization community believes that BFGS is more robust and more efficient than nonlinear CG in general anyway.  There are several examples in MOOCHO for unconstrained problems.

Cheers,

- Ross


> -----Original Message-----
> From: trilinos-users-bounces at software.sandia.gov
> [mailto:trilinos-users-bounces at software.sandia.gov] On Behalf
> Of James Willenbring
> Sent: Monday, September 08, 2008 7:57 AM
> To: 'Michele De Stefano'; trilinos-users at software.sandia.gov
> Subject: Re: [Trilinos-Users] [Trilinos-Bugs] Request of information
>
> Moving this question to a more appropriate mail list.
>
> Please comment.
>
> -----Original Message-----
> From: trilinos-bugs-bounces at software.sandia.gov
> [mailto:trilinos-bugs-bounces at software.sandia.gov] On Behalf
> Of Michele De Stefano
> Sent: Monday, September 08, 2008 4:51 AM
> To: trilinos Bug Report
> Subject: [Trilinos-Bugs] Request of information
>
> Good morning.
>
> After reading the Trilinos documentation and tutorial I've
> not yet understood if Trilinos contains a package for
> non-linear, unconstrained optimization.
>
> May you clarify on this, please ?
>
> Is there a package that is able to perform, for example, a
> Non-Linear Conjugate Gradients algorithm ?
>
> If the answer is yes, could you tell me which is this package ?
>
> Thank you very much.
> Michele
>
> --
> Michele De Stefano
> Research Geophysicist,
> WesternGeco-Geosystem,
> Via Clericetti 42/A,
> 20133, MILANO - ITALY
> TEL:   +39 02 266279232
> FAX:   +39 02 266279279
> e-mail:  mstefano at milan.westerngeco.slb.com
>
>
>
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