Bug#774640: liblapack3: SVD throws error -4 in 3.5.0-4 while it runs with version 3.4.1.

[Sébastien Villemot]

Control: tags -1 + upstream
Control: forwarded -1 http://icl.cs.utk.edu/lapack-forum/viewtopic.php?t=4808

Dear Madlene,

Le samedi 03 octobre 2015 à 11:45 +0200, Sébastien Villemot a écrit :
> Le lundi 05 janvier 2015 à 17:48 +0100, Madlene Nussbaum a écrit :
> > Some computations in R gave a matrix. The single value
> > decomposition
> > of it worked fine previously, after an system upgrade I get the
> > following error in R:
> > 
> > -----
> > $ R
> > load("matrix-lapack-error4.RData")
> > La.svd(x,256,256)
> > 
> >  Error in La.svd(x, nu, nv) :
> >     BLAS/LAPACK routine 'DLASCL' gave error code -4
> > -----

I have been able to reproduce your problem. A minimal Fortran example
(with matrix data in binary form) is available at:

 http://people.debian.org/~sebastien/bug774640.f90
 http://people.debian.org/~sebastien/bug774640.data

I have forwarded the issue to the LAPACK authors (see the URL at the
top of this email). Let's wait for their answer.

Best,

-- 
 .''`.    Sébastien Villemot
: :' :    Debian Developer
`. `'     http://sebastien.villemot.name
  `-      GPG Key: 4096R/381A7594


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