#11754: Computation of rank-decompositions in Sage
-----------------------------+----------------------------------------------
Reporter: ncohen | Owner: jason, ncohen, rlm
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.0
Component: graph theory | Keywords:
Work_issues: | Upstream: N/A
Reviewer: David Coudert | Author: Nathann Cohen
Merged: | Dependencies:
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Comment(by dcoudert):
Not good with 30-vertices on my 32bits / sage.5.beta1 / gcc 4.6.1 computer
{{{
sage: G = graphs.RandomTree(30)
sage: G.rank_decomposition()
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call
last)
/path-to-sage/sage-5.0.beta1/devel/sage-myclone/sage/graphs/<ipython
console> in <module>()
/path-to-sage/sage-5.0.beta1/local/lib/python2.7/site-
packages/sage/graphs/graph.pyc in rank_decomposition(self, verbose)
2999
3000 from sage.graphs.graph_decompositions.rankwidth import
rank_decomposition
-> 3001 return rank_decomposition(self, verbose = verbose)
3002
3003 ### Matching
/path-to-sage/sage-5.0.beta1/local/lib/python2.7/site-
packages/sage/graphs/graph_decompositions/rankwidth.so in
sage.graphs.graph_decompositions.rankwidth.rank_decomposition
(sage/graphs/graph_decompositions/rankwidth.c:863)()
RuntimeError: Segmentation fault
}}}
and still compilation errors on the other computer
:(
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11754#comment:30>
Sage <http://www.sagemath.org>
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