lapack and R.

[Tom 'spot' Callaway]

On Fri, 2005-09-23 at 18:47 +0100, Jose' Matos wrote:
> Hi Tom,
>   while reading the R-devel list I found a bug reported by Peter Dalgaard 
> against the lapack package in FC4. The bug follows:
> 
> *************************************************************************
> Hmm. Doesn't look like it is actually working, though. Install
> lapack-devel, configure --with-lapack, and make check dies with
> 
> running code in 'base-Ex.R' ...make[4]: *** [base-Ex.Rout] Error 1
> make[4]: Leaving directory `/home/pd/r-devel/BUILD/tests/Examples'
> make[3]: *** [test-Examples-Base] Error 2
> ....
> [pd at titmouse BUILD]$ tail tests/Examples/base-Ex.Rout.fail
> > kappa(x2 <- cbind(x1,2:11))# high! [x2 is singular!]
> [1] 8.351867e+16
> >
> > hilbert <- function(n) { i <- 1:n; 1 / outer(i - 1, i, "+") }
> > sv9 <- svd(h9 <- hilbert(9))$ d
> > kappa(h9)# pretty high!
> [1] 728289254735
> > kappa(h9, exact = TRUE) == max(sv9) / min(sv9)
> Error in La.svd(x, nu, nv) : BLAS/LAPACK routine 'DGEBRD' gave error code -10
> Execution halted
> 
> This happens on both x86_64 and x86 installs of FC4.
> 
> I have a strong sense of deja vu regarding this error.
> *************************************************************************
> 
> It looks like the "dejá vu" feeling comes from a previous bad patch in Debian.
> 
> Should I add this to Bugzilla? And then under R or under lapack? :-)

Yes. Please reference the Debian case if possible. File it under R.

~spot
-- 
Tom "spot" Callaway: Red Hat Senior Sales Engineer || GPG ID: 93054260
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