[Trilinos-Users] [EXTERNAL] Scaling Nonlinear Systems

[Pawlowski, Roger P]

Hi Qi Cheng,


NOX does support both function (left) and solution (right) scaling. The following unit tests demonstrate the capability:


Trilinos/packages/nox/test/epetra/Thyra/Thyra_RowSumScaling.C

Trilinos/packages/nox/test/epetra/Thyra/Thyra_RightScaling.C


Best,

Roger


________________________________
From: Trilinos-Users <trilinos-users-bounces at trilinos.org> on behalf of Qi Cheng Hua <QiCheng.Hua at gmx.de>
Sent: Monday, January 23, 2017 4:22 PM
To: trilinos-users at trilinos.org
Subject: [EXTERNAL] [Trilinos-Users] Scaling Nonlinear Systems

Dear Sir or Madam,

I would like to use the nonlinear Nox solvers to solve nonlinear systems. To address the case of ill-conditioned nonlinear systems, other software allow prescribing scaling factors both for the solution vector and for the residual vector. Is there a similar option for Nox and if not, is something planned in this matter?

Best regards,
Qi Cheng Hua
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