#16803: Reimplement matrix_integer_dense using FLINT
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Reporter: mmasdeu | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.4
Component: linear algebra | Resolution:
Keywords: flint, matrix | Merged in:
Authors: Marc Masdeu | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/mmasdeu/16803-matrix_integer_dense_flint|
f6ac760964f32d4e1105a541333e4df38a22aecd
Dependencies: | Stopgaps:
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Comment (by jdemeyer):
Replying to [comment:9 was]:
> A first remark playing around with timings is that in sage-6.3 somebody
or something has definitely *completely massively screwed* up Linbox, or
how Linbox is built, or how we use linbox, which was the default
representation and library for arithmetic.
Are you sure this isn't an imaginary slow-down? Just for fun, I installed
some old versions of Sage on boxen and executed the command
{{{
$ time ./sage -c '_ = Matrix(ZZ,1000,1000,range(10^6))^5'
}}}
I tested Sage versions 2.9(*), 2.11(*), 3.0.6, 3.2.3, 4.1, 4.5, 4.7, 5.0,
5.12, 6.1.1, 6.3 and the above command always took about 12 minutes. Note
that boxen is not an idle machine, so it's difficult to get accurate
timings, but there is certainly no massive slow-down.
(*) For these versions, ATLAS didn't compile so I used the ATLAS package
from Sage 3.0.6.
--
Ticket URL: <http://trac.sagemath.org/ticket/16803#comment:22>
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