[Trilinos-Users] Query in Amesos

[Jonathan Hu]

Hi Vignesh,

    I believe the Amesos factory returns 0 if the factory isn't 
available.   Remember that Amesos is an interface to 3rd party 
libraries.  Only Paraklete and KLU are provided with Amesos;  you must 
obtain and build the others, and configure Amesos to use them.  Please 
see 
http://trilinos.sandia.gov/packages/docs/r4.0/packages/amesos/doc/html/index.html 
for details on this process;  there's also a guide located in 
Trilinos/packages/amesos/doc/AmesosReferenceGuide.

Regards,
Jonathan

vigneshp wrote:
> Hello Jonathan,
> I am using the Amesos packages and trying to use the different solvers.
>
> This is a piece from my code :-
> InversePrecOp::InversePrecOp(Epetra_CrsMatrix &AA, std::string am_soltype) :
> A(AA)
> {
>   Problem = new Epetra_LinearProblem;
>   Problem->SetOperator(&AA) ;
>   Amesos A_Factory;
>   Solver = A_Factory.Create( "Amesos_Lapack", *Problem);
>   assert(Solver != NULL);
> }
>
> Solver returns null though. Works fine for Amesos_Klu. Kindly help me resolve
> this issue.
> Thank you for your time.
> Vignesh
> MIT Grad Student.
>