From ripley at stats.ox.ac.uk  Thu Sep 22 11:36:29 2005
From: ripley at stats.ox.ac.uk (Prof Brian Ripley)
Date: Thu, 22 Sep 2005 10:36:29 +0100 (BST)
Subject: [Rd] looks in liblapack.a not liblapack.so
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Message-ID: <Pine.LNX.4.61.0509221034170.15750@gannet.stats>

On Thu, 22 Sep 2005, Peter Dalgaard wrote:

> 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.

Probably because it is discussed in the R-admin manual as having 
previously appeared in Debian and being traced to an erroneous patch to 
the Lapack 3.0 sources.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595



[Rd] looks in liblapack.a not liblapack.so
Prof Brian Ripley