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Subject: Re: [ublas] recommendation for submatrix assignment
From: Umut Tabak (u.tabak_at_[hidden])
Date: 2010-08-09 06:35:02

On 08/09/2010 12:23 PM, Umut Tabak wrote:
> Dear all,
> I was looking for some ways to assign submatrices efficiently in
> ublas(I am using the precompiled binaries provided by Debian testing,
> not the latest version of ublas), I have some questions on this and
> would be glad if some experienced ones can help me:
> + which sparse matrix type is best suited for assignment(submatrix
> assignment) and extraction? \
As a follow up to my own question, using a compressed matrix in subrange
assingment decreased the time substantially

...matrix is loading into boost sparse matrix...
...matrix interfaced to boost in : 0.43
...matrix is being ported to PETSc sparseAIJ format...
...matrix ported to PETSc in : 0.38
starting subrange assignments
subrange assignments completed in : 0.43

There is more to test, I guess, but would still appreciate pointers ;-)