Bug#569436: [Pkg-scicomp-devel] Bug#569436: Bug#569436: lapack: zgesvd seems to give incorrect results

Kumar Appaiah a.kumar at alumni.iitm.ac.in
Sat Feb 13 15:59:24 UTC 2010


Dear Sylvestre,

On Sat, Feb 13, 2010 at 04:56:54PM +0100, Sylvestre Ledru wrote:
> reassign 569436 blas 1.2-3
> retitle 569436 blas: zgesvd seems to give incorrect results
> thanks
> 
> Le samedi 13 février 2010 à 09:45 -0600, Kumar Appaiah a écrit :
> > Dear Sylvestre,
> > 
> > I've zeroed down the bug to the last blas upload. Note that for the
> > intel program, the expected Left singular vectors are:
> OK, well spotted.
> I adopted blas last week since there was no longer any active maintainer
> on this.
> Most of the modifications are minor [1] and won't produce this bug
> except
> * Explicit dependency on gcc 4.3 removed (Closes: #533807)
> but the changelog does not say what this explicit dep has been added...

I would also suspect that this is a compiler related issue; for your
modifications are only in the control file and changelog. I'll try to
probe this further, and let you know.

Thanks.

Kumar
-- 
My heart, the bird of the wilderness, has found its sky in your eyes.
- Rabindranath Tagore (The Gardener, 1915)
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