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Re: gcc 3.4 and Octave/lapack problems
From: |
Dmitri A. Sergatskov |
Subject: |
Re: gcc 3.4 and Octave/lapack problems |
Date: |
Fri, 12 Nov 2004 09:10:59 -0700 |
User-agent: |
Mozilla Thunderbird 0.8 (X11/20041020) |
Quentin Spencer wrote:
I also installed Fedora Core 3 and saw the same problems. I looked this
morning on the Red Hat ftp server and noticed the development branch had
an updated version of lapack:
http://download.fedora.redhat.com/pub/fedora/linux/core/development/SRPMS/lapack-3.0-26.src.rpm
I downloaded the SRPM and rebuilt it, and the linear algebra functions
like eig appear to be working correctly now (I'm using the same octave
2.1.61 I compiled yesterday with no changes). I have attached the SPEC
file. It appears to only change the -O flags. This updated release was
in response to a separate bug that was reported in lapack:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=138447
Thanks for pointing this bug out to me. I add my $0.10 to it :)
I believe a) this is a gcc issue, b) the "fix" by recompiling
with -O is fortuitous, and real fix is to do -ffloat-store.
I haven't done very thorough testing (I haven't tested Dmitri's Fortran
code, for example), but I don't see any problems so far.
Besides problems with eig() I found that schur() would run much slower
with broken lapack.
Quentin
Dmitri.
--
- gcc 3.4 and Octave/lapack problems, (continued)
- gcc 3.4 and Octave/lapack problems, John W. Eaton, 2004/11/11
- Re: gcc 3.4 and Octave/lapack problems, Dmitri A. Sergatskov, 2004/11/11
- Re: gcc 3.4 and Octave/lapack problems, John W. Eaton, 2004/11/11
- Re: gcc 3.4 and Octave/lapack problems, Dmitri A. Sergatskov, 2004/11/11
- Re: gcc 3.4 and Octave/lapack problems, Dmitri A. Sergatskov, 2004/11/11
- Re: gcc 3.4 and Octave/lapack problems, John W. Eaton, 2004/11/11
- Re: gcc 3.4 and Octave/lapack problems, Dmitri A. Sergatskov, 2004/11/12
- Re: gcc 3.4 and Octave/lapack problems, Jskud, 2004/11/12
- Re: gcc 3.4 and Octave/lapack problems, Dmitri A. Sergatskov, 2004/11/12
- Re: gcc 3.4 and Octave/lapack problems, Quentin Spencer, 2004/11/12
- Re: gcc 3.4 and Octave/lapack problems,
Dmitri A. Sergatskov <=