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

[Ronan Perrussel]

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

> + There is a mumps interface in the source code of the library? Are  
> there any starter examples on how to use this interface?
I used it some time ago. At this time, it was explained in the user  
documentation. I cannot provide you more information.

Best regards,
Ronan