Re: [Getfem-users] some questions on sparse matrix operations on gmm++

[Umut Tabak]

On 06/14/2011 09:08 AM, Ronan Perrussel wrote:
> Dear Umut,
>
> I have partial answers to your questions.
>
> > + Is there a way to get the triplet data of a sparse, say csr matrix, 
> > directly from gmm++, or do I have to iterate over the non-zeros of 
> > the matrix, I am searching for a method like row_data, col_data, 
> > value_data or so, are these implemented transparently to the user? I 
> > would like to get these 3 arrays.
> gmm::csr_matrix< Scalar > MM;
> row_data -> MM.jc
> col_date -> MM.ir
> value_data -> MM.pr
Dear Ronan,

Thanks for the information, there are some compilation flags for mumps 
in the documentation, but does that mean that when I compile gmm++ with 
these flags and lu_solve will use mumps? One more question related to 
this subject, is that possible to keep the factorization information 
when using mumps as well?

Greetings,

Umut