|
From: | Michael D Godfrey |
Subject: | Re: Octave 3.4.3-rc0 release candidate available for ftp |
Date: | Sat, 01 Oct 2011 18:07:46 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:6.0.2) Gecko/20110906 Thunderbird/6.0.2 |
On 10/01/2011 04:24 PM, Jussi Lehtola wrote:
This is very weird. As far as I know, this test has not failed in a very long time.On Sat, 01 Oct 2011 15:59:45 -0700 Michael D Godfrey<address@hidden> wrote:> 1. System that fails is: model name : Dual Core AMD > Opteron(tm) Processor 275 > 2. System that passes is: model name : Intel(R) Core(TM) > i7 CPU 860 @ 2.80GHz> > But, the system which fails passed until recently. And, of course,> there may be other > software differences despite the fact that both systems are > up-to-date fc15.> > Since the one make check failure is within a very small margin of> eps, I think this should > not be considered to be more that a curious anomaly.Could the svds tolerance be increased as well, so that my build would complete without errors? I ran the build on an Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz.-- Jussi Lehtola Fedora Project Contributor address@hidden
My failures are all just like: 450: maximum absolute error 2.22478e-16 exceeds tolerance 2.22045e-16 which is: octave:1> 2.22478e-16 /eps ans = 1.0020 ============================================So, the difference is trivial. It could not do any real harm if the tolerance were changed to 1.1*eps, for example. But, it would be best if the cause of this failure
could somehow be discovered.The fact the you (Jussi) see it on an Intel processor, just about eliminates the
possibility of some (very unlikely) chance that it is CPU-dependent.To add to the confusion, I just did a new rebuild from hg on the second fc15 system that was failing. Nothing else changed, but now it passes. This is an Intel(R) Atom(TM) CPU D525 @ 1.80GHz
There is a chance that there have been changes in gnulib, so I will go back to the last failing
machine and start over. Michael
[Prev in Thread] | Current Thread | [Next in Thread] |