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

[Sébastien Villemot]

Control: tag -1 + moreinfo

Dear Madlene,

Le lundi 05 janvier 2015 à 17:48 +0100, Madlene Nussbaum a écrit :
> Package: liblapack3
> Version: 3.5.0-4
> Severity: normal

> 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
> -----

> How do I track down this error code?
> Is this a bug in liblapack3 or what did change?

Sorry for the late reply.

I guess this is a bug in LAPACK.

Unfortunately, I can't download the FTP link that you sent me,
containing the matrix (
ftp://usys-ftp.ethz.ch/ITES/STEP/nussbaum/R/matrix-lapack-error4.RData)
.

Could you possibly send me the RData file by e-mail?

Best,

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



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