[Trilinos-Users] Solvers and preconditioners available for Epetra_VbrMatrices

Bartlett, Roscoe A. bartlettra at ornl.gov
Fri Sep 16 07:16:15 MDT 2011


The basic Thyra/Epetra adapters only require Epetra_Operator but the adpaters in Stratimikos for Ifpack, ML, AztecOO, etc. require Epetra_RowMatrix.  However, this means that if you create your own preconditioner, you just need to wrap it as an Epetra_Operator then in a Thyra adapter object and you can use it with Straimikos iterative solvers (bypassing any built-in preconditioners).


-----Original Message-----
From: trilinos-users-bounces at software.sandia.gov [mailto:trilinos-users-bounces at software.sandia.gov] On Behalf Of Bartlett, Roscoe A.
Sent: Thursday, September 15, 2011 9:19 PM
To: 'Alberto F. Martín-Huertas'; Heroux, Michael A
Cc: Javier Principe; trilinos-users at software.sandia.gov
Subject: Re: [Trilinos-Users] Solvers and preconditioners available for Epetra_VbrMatrices


> -----Original Message-----
>  Does your comment also apply for
>  Stratimikos+Thyra ? In particular, can one wrap
>  Thyra abstract linear algebra objects
>  around Epetra_VbrRowMatrices ?

Epetra_VbrRowMatrix derives from Epetra_Operator so VBR should work just fine with Thyra and Stratimikos.  If it does not work, let us know.


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