#12476: Join matrix is unreasonably slow
-----------------------------+----------------------------------------------
Reporter: hivert | Owner: sage-combinat
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: combinatorics | Keywords: poset, matrix, Cernay2012
Work_issues: | Upstream: N/A
Reviewer: | Author: Florent Hivert, Nathann Cohen
Merged: | Dependencies:
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Before
{{{
sage: %time posets.BooleanLattice(8)
CPU times: user 10.42 s, sys: 0.01 s, total: 10.43 s
Wall time: 10.51 s
Finite lattice containing 256 elements
}}}
After
{{{
sage: %time posets.BooleanLattice(8)
CPU times: user 0.75 s, sys: 0.01 s, total: 0.76 s
Wall time: 0.84 s
Finite lattice containing 256 elements
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12476>
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