#2705: random_matrix with sparse=True is very slow
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Reporter: dfdeshom | Owner: was
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-4.7.1
Component: linear algebra | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by ryan):
Well...apparently density=.05 is too dense for a 2000x2000 matrix
{{{
sage: time A = random_matrix(QQ, 2000, density=.01, sparse=True)
Time: CPU 2.17 s, Wall: 2.82 s
sage: time A = random_matrix(QQ, 2000, density=.01, sparse=False)
Time: CPU 3.25 s, Wall: 3.57 s
}}}
However, sparse matrices in sage are in need of some tender loving care
(according to some other sage devs)
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/2705#comment:5>
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