Re: [ublas] Problem with Boost bindings

From: Michele De Stefano (micdestefano_at_[hidden])
Date: 2007-08-27 06:57:30

Hi Kresmir.
First of all, thank you very much.

The problem was I had the ATLAS compiled library installed but not the
corresponding headers
(I had done the installation through "Yum Extender" on my Fedora 7, but I
had not added the
development SW ... now I have done it and I was able to compile the
example).

I have other questions for you.

Are your bindings able to treat sparse matrices too ?

I ask this because I've tried to use your "gemv" binding (blas.hpp) and I
was able to make the
program work only with a dense matrix, column_major storage. Is this
behavior correct or am
I doing something wrong ?

Saying it in other terms, is it possible to use row_major storage with your
"gemv" too ?
(I ask this only for information, because I already know that the same
operation can be done using
the "axpy_prod" function of the official Boost).

On 8/24/07, Kresimir Fresl <fresl_at_[hidden]> wrote:
>
> Hi Michele,
>
> > The first error I receive is that the compiler (gcc 4.1.2) cannot find
> > atlas/clapack.h or atlas/cblas.h.
>
> If I understand correctly, these are ATLAS headers. Their location
> depends on your installation (of ATLAS). You should edit
> bindings/atlas/cblas_inc.hpp and clapack_inc.hpp to provide your paths.
>
> > [...]
> > Has someone an idea ?
>
> Unfortunately, I cannot help for other errors. Although it probably
> sounds strange, I currently don't have a working version of ublas and
> bindings.
>
> Regards,
>
> fres
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