From ripley at stats.ox.ac.uk  Mon Mar 27 21:05:20 2006
From: ripley at stats.ox.ac.uk (ripley at stats.ox.ac.uk)
Date: Mon, 27 Mar 2006 21:05:20 +0200 (CEST)
Subject: [Rd] Matrix inner product crashes on x86_64 (PR#8715)
Message-ID: <20060327190520.767B04269A@slim.kubism.ku.dk>

Not reproducible for me (and do you really think that something as simple 
as this would not have been found on x86_64 long before now?)

This is almost certainly caused by your use of an inappropriate external 
BLAS.  Something has probably been compiled for a different processor than 
the one you are using, since illegal instructions are a compiler (not R) 
issue that I have seen quite often on ix86 systems when this happened.

Use --without-blas when recompiling R and see if it then works.

On Mon, 27 Mar 2006, jtlindgr at cs.helsinki.fi wrote:

>
> Matrix inner product seems to crash R2.2.1 on a 64bit arch.
> More precisely, the crash happens atleast if the matrix is
> non-square. The bug can be reproduced (atleast here) with
>
> bash$ bin/R
>> X<-matrix(data=0,nrow=100,ncol=10);
>> mat<-X%*%t(X);
> Illegal instruction
> bash$
>
> The crash doesnt happen if the matrix is specified square,
> e.g. 10x10. The underlying OS was
>
> Linux version 2.6.12-xeon-csl3 (root at chuck) (gcc version 3.4.5 20050809 (prerelease) (Ubuntu 3.4.4-6ubuntu8)) #1 SMP Wed Feb 22 18:34:17 EET 2006
>
> and its running on Intel(R) Xeon(TM) MP CPU 3.66GHz.
>
> I configured R from the source tar.gz myself; each phase of
> "./configure --with-x=no ; make ; make install"
> passed without aborting on any errors.
>
>
> Cheers,
> J.
>
> --please do not edit the information below--
>
> Version:
> platform = x86_64-unknown-linux-gnu
> arch = x86_64
> os = linux-gnu
> system = x86_64, linux-gnu
> status =
> major = 2
> minor = 2.1
> year = 2005
> month = 12
> day = 20
> svn rev = 36812
> language = R
>
> Locale:
> LC_CTYPE=fi_FI at euro;LC_NUMERIC=C;LC_TIME=en_US.ISO-8859-15;LC_COLLATE=en_US.ISO-8859-15;LC_MONETARY=fi_FI at euro;LC_MESSAGES=en_US.ISO-8859-15;LC_PAPER=C;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=C;LC_IDENTIFICATION=C
>
> Search Path:
> .GlobalEnv, package:methods, package:stats, package:graphics, package:grDevices, package:utils, package:datasets, Autoloads, package:base
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
>

-- 
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] Matrix inner product crashes on x86_64 (PR#8715)
ripley at stats.ox.ac.uk