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poor vector/matrix-proxy performance

(1)
Hallo, one of our students looked at the performance of the cholesky decomposition using ublas. The result is quite surprising: $ for i in 100 200 400 800
Gunter Winkler
1
post
Aug 24, 2005

restict traits

(1)
Hallo, matrix_matrix_binary uses restict_traits to identify the type of the iterators. Thus an expression (dense - banded) gives packed_proxy_tag as storage
Gunter Winkler
1
post
Jun 24, 2005

Computing JAJt

(1)
I wonder what is the most efficient way to compute the product J * A * Jt where J is a sparse matrix, A is diagonal and Jt is the transpost of J. In Ublas
lucaregini
1
post
May 22, 2005

precondition checks suppressed

(1)
In the constructor of matrix_range for instance, the precondition checks are commented out. Now there is no error generated when you create a matrix_range that
Toon Knapen
1
post
Mar 10, 2005

Unexpected behaviour of project()

(1)
The following line does not work (it is from a cholesky routine submitted a long time ago on this list): UBLAS::project(U.row (i))(UBLAS::range (i + 1, size))
Antonio Martino
1
post
Feb 3, 2005

ANN: new ml dedicated to Generic Linear Algebra

(1)
Hi all, I would like to inform you that a new mailinglist has been created that is dedicated to Generic Linear Algebra Software (GLAS). The aim of the glas-ml
Toon Knapen
1
post
Feb 2, 2005

bindings for 1.32?

(3)
Hi Toon, You accidently posted to yahoo groups. It is too easy to do! Michael
grinningguppi
3
posts
Jan 19, 2005

Broken HEAD

(4)
Could you provide us with a small example? BTW: use the ublas@... ml instead of the deprecated ml at yahoogroups.
Michael Stevens
4
posts
Jan 19, 2005

merged uBLAS_pure branch to HEAD

(4)
Toon, I just noticed the thread was/is actually being sent to the old yahoogroups list. I guess we need to be careful to post to lists.boost.org Michael
Toon Knapen
4
posts
Jan 4, 2005

new mailing list

(14)
... As I already posted, I have contacted Lars. And in the mean time he acknowledge that the necessary actions were taken by him.
Toon Knapen
14
posts
Dec 15, 2004

Re: [Boost-users] lu.hpp : permutation matrix error

(1)
... This is again the old include-policy problem. Previously the headers of ublas were not self-contained. This has been fixed but only on a branch (and thus
Toon Knapen
1
post
Dec 5, 2004

merge uBLAS_pure into HEAD

(1)
Hi all, Micheal has already put in a lot of effort to clean up uBLAS and has done all that in the uBLAS_pure branch (while the HEAD was being prepared for
Toon Knapen
1
post
Dec 2, 2004

Direction of ublas development: array_adaptor, bindings, ,multi_arr

(2)
Hi Russell, ... OK sounds good! ... I think the reason that array_adaptor is not yet a first class citizen is that it is just one of very many possible
Toon Knapen
2
posts
Dec 2, 2004

Re: [boost] IMPORTANT: yahoogroups admin rights problem

(1)
... I think we have a consensus in the ublas-dev to change from yahoogroups to the lists.boost.org server. Anyone can tell us how to manage this from a
Toon Knapen
1
post
Nov 25, 2004

ublas_pure bugs

(1)
Hi, I started using some of my old code with the ublas_pure branch. I came across some (small) errors: => In several places in the code, it is assumed that
gitarrenschlumpf
1
post
Nov 24, 2004
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