[petsc-users] Need to Know about Trust-Region

[Barry Smith]

   BehZad,

    All the source code for the trust region method can be found in src/snes/impls/tr   You can find the details there.

    Barry



> BehZad

On Dec 12, 2011, at 2:49 AM, behzad baghapour wrote:

> Dear developers,
> 
> In Petsc user manual, it was mentioned that Trust-Region Method is working upon MINPACK routines. I need to know more details of the procedure like:
> 
> 1- How to update the TR bound?
> 2- How solving the minimization subproblem?
> 3- How to calculate the search direction? Is the "dogleg" direction is used?
> 
> Thanks a lot,
> BehZad