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[Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0
From: |
Michael Godfrey |
Subject: |
[Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0 |
Date: |
Mon, 03 Oct 2011 00:23:37 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:7.0) Gecko/20100101 Firefox/7.0 |
Follow-up Comment #2, bug #34461 (project octave):
On one x86_64 fc15 system I get:
octave:2> assert (s, ones (6, 1), 2*eps);
octave:3>
Reducing tolerance to eps:
octave:5> assert (s, ones (6, 1), eps);
error: assert (s,ones (6, 1),eps) expected
1
1
1
1
1
1
but got
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
maximum absolute error 4.44089e-16 exceeds tolerance 2.22045e-16
error: called from:
error: /usr/share/octave/3.4.2/m/testfun/assert.m at line 237, column 5
============================================
But on another I get, as reported:
octave:1> s = svds (speye (10));
octave:2> assert (s, ones (6, 1), 2*eps);
error: assert (s,ones (6, 1),2 * eps) expected
1
1
1
1
1
1
but got
1.00000
1.00000
1.00000
1.00000
1.00000
1.00000
maximum absolute error 8.88178e-16 exceeds tolerance 4.44089e-16
But then, if I do yum remove atlas-devel
I get:
octave:1> s = svds (speye (10));
octave:2> assert (s, ones (6, 1), 2*eps);
error: assert (s,ones (6, 1),2 * eps) expected
1
1
1
1
1
1
but got
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
maximum absolute error 1.77636e-15 exceeds tolerance 4.44089e-16
error: called from:
error: /usr/share/octave/3.4.2/m/testfun/assert.m at line 237, column 5
octave:2>
==================================
I removed atls-devel because I noticed that it was not
installed on the machine that works. But, I did not expect
the change above. I did notice that atlas-devel installs
libs in /usr/lib64/atlas:
/usr/lib64/atlas/libatlas.so
/usr/lib64/atlas/libcblas.so
/usr/lib64/atlas/libclapack.so
/usr/lib64/atlas/libf77blas.so
/usr/lib64/atlas/liblapack.so
/usr/lib64/atlas/libptcblas.so
/usr/lib64/atlas/libptf77blas.so
==========================================
This does not appear to make a difference, but something
about removing atlas-devel has changed the result.
Michael
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?34461>
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- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Jussi Lehtola, 2011/10/02
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Jussi Lehtola, 2011/10/02
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0,
Michael Godfrey <=
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Michael Godfrey, 2011/10/02
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Jussi Lehtola, 2011/10/03
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, marco atzeri, 2011/10/03
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Michael Godfrey, 2011/10/03
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Jussi Lehtola, 2011/10/03
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Michael Godfrey, 2011/10/03
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Michael Godfrey, 2011/10/04
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, Jussi Lehtola, 2011/10/05
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, John W. Eaton, 2011/10/10
- [Octave-bug-tracker] [bug #34461] Error in svds test with 3.4.3-rc0, marco atzeri, 2011/10/10