Gentoo Archives: gentoo-science

From: Christopher Schwan <cschwan@××××××××××××××××××.de>
To: gentoo-science@l.g.o
Subject: Re: [gentoo-science] [sage-on-gentoo] updates
Date: Sat, 22 May 2010 10:33:45
Message-Id: 201005221233.15971.cschwan@students.uni-mainz.de
In Reply to: Re: [gentoo-science] [sage-on-gentoo] updates by Steven Trogdon
1 Hi,
2
3 On Friday 21 May 2010 22:55:03 Steven Trogdon wrote:
4 > On 05/21/10 - 05:40:38, François Bissey wrote:
5 > > Hi all,
6 > >
7 > > sage-4.4.2 has just been released. I am guessing that Christopher
8 > > may be preparing for exams in June so I will probably do the bump.
9 > > I have already bumped sage-doc.
10 > >
11 > > Other matters:
12 > > -The situation on amd64 is still bad. There has been a silent (no
13 > > revbump)
14 > > update to cython to deal with a strict-aliasing problem:
15 > > http://bugs.gentoo.org/show_bug.cgi?id=294585
16 > > I don't have the hardware so I cannot check if it has an influence on
17 > > our
18 > > problems but it is worth a try.
19 >
20 > Just for the record, I've tried sage-4.4.1 and sage-4.4.2 with a
21 > rebuild of cython and I still have the random "corrupted double-linked
22 > list" failures on my amd64. Has anyone had any success using valgrind
23 > to debug this. Is it possible to even use portage valgrind to debug
24 > Sage? I have 3.5.0 installed, built with FEATURES=splitdebug and Sage
25 > seems to cleverly avoid all attempts at using it.
26
27 I think you already saw this thread (if not this is what you are looking for):
28
29 http://groups.google.com/group/sage-
30 devel/browse_thread/thread/cd8005be927fc896
31
32 To use valgrind on amd64 follow these steps:
33
34 - emerge valgrind-3.5.0 (previous versions did not work)
35 - valgrind prints out a message to reinstall libc (or was it glibc ?) with
36 FEATURES=splitdebug - thats defintely needed
37 - edit sage-valgrind in Sage's local/bin directory: remove "--
38 suppressions=..." option or point to this file (see thread above) and add --
39 trace-children=yes
40 - start sage with "sage -valgrind"
41
42 >
43 > Steve
44
45 Christopher