I think it is just that you should bear in mind that your system is less accurate than a more modern one (and lots of compiler bugs have been fixed since gcc 3.2.3).
[I am surprised your sysadmins are happy running an OS that is lacking so many of the security features of current Linuxen. Ours are not!] On Thu, 19 Oct 2006, Armstrong, Whit wrote: > I see the comment here about some 64bit combinations failing. > > Well, my configuration fails. Is this really something to worry about? > > for R-patched: > fi1->cat SVN-REVISION > Revision: 39576 > Last Changed Date: 2006-10-03 > fi1-> > > >> ## failed for some 64bit-Lapack-gcc combinations: >> sm <- cbind(1, 3:1, 1:3) >> eigenok(sm, eigen(sm)) > Error: abs(A %*% V - V %*% diag(lam)) < Eps is not all TRUE >> eigenok(sm, eigen(sm, sym=FALSE)) > Error: abs(A %*% V - V %*% diag(lam)) < Eps is not all TRUE >> > > > I'm not using a nonstandard blas or lapack, just the ones included in R. > > > Here is my system information: > > fi1->gcc --version > gcc (GCC) 3.2.3 20030502 (Red Hat Linux 3.2.3-47) > Copyright (C) 2002 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is > NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR > PURPOSE. > > fi1->uname -a > Linux fi1.nyc.office.hcmny.com 2.4.21-32.ELsmp #1 SMP Fri Apr 15 > 21:03:28 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux > fi1-> > > > This is RHEL v3. I know gcc 3.2.3 is old, but I don't have root, and > our admins are not crazy about changing 1 system to accommodate 1 user, > so I'm happy to ignore the test failure if it's not something to worry > about. I'm not using lapack routines in my code, but I don't know to > what extent R makes use of lapack internally. > > Can anyone give me the skinny on whether this test failure really > matters? > > Thanks, > Whit > > > > > > This e-mail message is intended only for the named recipient(s) above. It may > contain confidential information. If you are not the intended recipient you > are hereby notified that any dissemination, distribution or copying of this > e-mail and any attachment(s) is strictly prohibited. If you have received > this e-mail in error, please immediately notify the sender by replying to > this e-mail and delete the message and any attachment(s) from your system. > Thank you. > > -- Brian D. Ripley, [EMAIL PROTECTED] 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 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
