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Re: [Getfem-users] submatrix addressing and assignment of this to a csr

From: Umut Tabak
Subject: Re: [Getfem-users] submatrix addressing and assignment of this to a csr matrix
Date: Wed, 04 May 2011 12:25:17 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20101226 Icedove/3.0.11

On 05/04/2011 12:14 PM, Andriy Andreykiv wrote:
Dear Umut,

My "experience" tells me to just plagiarize as much as possible from
getfem itself.
In doing so you might find that a lot of the stiffness matrices are
declared with a type sparse_matrix, which comes from:

typedef getfem::modeling_standard_sparse_matrix sparse_matrix;

and this, in its turn comes from

typedef gmm::col_matrix<modeling_standard_sparse_vector>

(where they also use:  typedef gmm::rsvector<scalar_type>

So, in my code ALL the global size matrices are "sparse_matrix" type.
It works quite fast, so I don't bother to check whether this is THE
fastest way, but, may be, the other getfemers will comment on this.

Best regards,

Dear Andriy,
Thanks for the detailed explanation...

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