#7199: inefficiency of creation of sparse matrices
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Reporter: zimmerma | Owner: was
Type: enhancement | Status: positive_review
Priority: major | Milestone: sage-4.5.3
Component: linear algebra | Keywords:
Author: Yann Laigle-Chapuy | Upstream: N/A
Reviewer: Paul Zimmermann | Merged:
Work_issues: |
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Changes (by newvalueoldvalue):
* status: needs_review => positive_review
* reviewer: => Paul Zimmermann
* author: => Yann Laigle-Chapuy
Comment:
Replying to [comment:4 ylchapuy]:
> With the provided patch, `essai1` becomes faster than `essai3`.
I confirm, with Sage 4.4.4, still on a 2.83Ghz Core 2 (note however the
regression in the timing for {{{essai3}}} between 4.1.1 and 4.4.4, which
is independent from this patch):
{{{
sage: count=200
sage: dimen=30
sage: timeit('essai1()')
5 loops, best of 3: 431 ms per loop
sage: timeit('essai3()')
5 loops, best of 3: 1.18 s per loop
}}}
Good work,Yann!
Paul
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7199#comment:5>
Sage <http://www.sagemath.org>
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