#20445: Iteration through finite Coxeter groups
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Reporter: | Owner:
stumpc5 | Status: new
Type: | Milestone: sage-7.2
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers:
combinatorics | Work issues:
Keywords: | Commit:
Authors: | 88ec6a0d7a77fe89034218fb05a328de8fbfaa37
Report Upstream: N/A | Stopgaps:
Branch: |
u/stumpc5/20445 |
Dependencies: |
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Comment (by stumpc5):
I just redid the computations and it seems to be about twice as fast as in
gap3:
{{{
sage: W = ReflectionGroup(['E',7])
sage: from sage.combinat.root_system.reflection_group_c import
parabolic_iteration
sage: timeit("for w in parabolic_iteration(W): pass",number=5)
5 loops, best of 3: 1.56 s per loop
sage: timeit("for w in parabolic_iteration(W): pass",number=5)
5 loops, best of 3: 1.43 s per loop
sage: W = ReflectionGroup(['E',8])
sage: %time for w in parabolic_iteration(W): pass
CPU times: user 9min 12s, sys: 3.81 s, total: 9min 16s
Wall time: 9min 16s
}}}
So we are slowly approaching the 5min...
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Ticket URL: <http://trac.sagemath.org/ticket/20445#comment:14>
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