#11227: gcc-4.6.0 optimization bug with cliquer-1.2.p7.spkg
------------------------+---------------------------------------------------
Reporter: mariah | Owner: mariah
Type: defect | Status: needs_review
Priority: blocker | Milestone: sage-4.7
Component: packages | Keywords: cliquer
Work_issues: | Upstream: N/A
Reviewer: | Author: Jeroen Demeyer
Merged: | Dependencies:
------------------------+---------------------------------------------------
Changes (by newvalueoldvalue):
* priority: major => blocker
* status: new => needs_review
* milestone: sage-4.7.1 => sage-4.7
* author: => Jeroen Demeyer
Old description:
> On various 64-bit x86_64 Linux machines (for example, the Skynet machine
> eno), sage-4.7.alpha5 built with gcc-4.6.0 fails various tests with a
> timeout:
>
> {{{
> sage -t -long -force_lib devel/sage/sage/graphs/graph_generators.py #
> Time out
> sage -t -long -force_lib devel/sage/sage/graphs/graph_coloring.py # Time
> out
> sage -t -long -force_lib devel/sage/sage/graphs/graph.py # Time out
> sage -t -long -force_lib devel/sage/sage/graphs/cliquer.pyx # Time out
> }}}
>
> The problem can be seen by executing the following command, which should
> take milliseconds but simply hangs instead:
> {{{
> sage: clique_number(Graph({0:[1,2,3], 1:[2], 3:[0,1]}))
> }}}
>
> For other gcc 4.6.0 specific problems see #11216.
New description:
On various 64-bit x86_64 Linux machines (for example, the Skynet machine
eno), sage-4.7.alpha5 built with gcc-4.6.0 fails various tests with a
timeout:
{{{
sage -t -long -force_lib devel/sage/sage/graphs/graph_generators.py #
Time out
sage -t -long -force_lib devel/sage/sage/graphs/graph_coloring.py # Time
out
sage -t -long -force_lib devel/sage/sage/graphs/graph.py # Time out
sage -t -long -force_lib devel/sage/sage/graphs/cliquer.pyx # Time out
}}}
The problem can be seen by executing the following command, which should
take milliseconds but simply hangs instead:
{{{
sage: clique_number(Graph({0:[1,2,3], 1:[2], 3:[0,1]}))
}}}
New spkg adding flag `-fno-ivopts`:
[http://boxen.math.washington.edu/home/jdemeyer/spkg/cliquer-1.2.p8.spkg]
For other gcc 4.6.0 specific problems see #11216.
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11227#comment:8>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
