[Trilinos-Users] [EXTERNAL] Amesos2 Klu2 is not enabled or is not supported

[Siva Rajamanickam]

Truman,
   The first one is expected as KLU2 is no enabled by default. I am not sure why 
enabling it will get ignored, so it would be nice to know which version of 
Trilinos you are using.

  Also what is your problem domain ? You might be able to use Basker, a new 
templated solver easily, if you don't depend on specific features of KLU (like 
the block triangular form) for performance.

Thanks
Siva

On 03/24/2015 01:03 PM, Truman Ellis wrote:
> We have a code built on Epetra and Amesos that we are gradually migrating to 
> Tpetra and Amesos2 in order to add support for complex variables. My first 
> step in the conversion is just getting Amesos2 to work with our Epetra 
> objects. The old code declares an Amesos_klu solver
> Amesos_Klu klu(problem);
> where problem is an Epetra_LinearProblem.
> My new code uses the following:
>     Teuchos::RCP<Epetra_RowMatrix> A = Teuchos::rcp(problem.GetMatrix());
>     Teuchos::RCP<Epetra_MultiVector> X = Teuchos::rcp(problem.GetLHS());
>     Teuchos::RCP<Epetra_MultiVector> B = Teuchos::rcp(problem.GetRHS());
> Teuchos::RCP<Amesos2::Solver<Epetra_RowMatrix,Epetra_MultiVector> > solver = 
> Amesos2::create<Epetra_RowMatrix,Epetra_MultiVector>(A, X, B);
>     solver->solve();
>
> This all compiles fine, but when I try to run it, I get the following error:
> terminate called after throwing an instance of 'std::invalid_argument'
>   what(): 
> /workspace/truman/trilinos/lib/cmake/Trilinos/../../../include/Amesos2_Factory.hpp:565:
>
> Throw number = 1
>
> Throw test that evaluated to true: true
>
> Klu2 is not enabled or is not supported
> Aborted
>
> I tried explicitly adding the following line to my do-configure script for 
> building Trilinos:
> -D Amesos2_ENABLE_KLU2:BOOL=ON \
>
> But I get a CMake warning:
> CMake Warning:
>   Manually-specified variables were not used by the project:
>
>     Amesos2_ENABLE_KLU2
>
> Any thoughts on how to fix this?
>
> Thanks,
> Truman Ellis
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