#18589: isogeny efficiency improvement
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Reporter: | Owner:
cremona | Status: positive_review
Type: | Milestone: sage-6.8
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers: Jeroen Demeyer
elliptic curves | Work issues:
Keywords: | Commit:
isogeny | 3d687e5225f67808eb6c5af5fbf4cb93f2000c62
Authors: John | Stopgaps:
Cremona |
Report Upstream: N/A |
Branch: |
u/cremona/18589 |
Dependencies: |
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Comment (by cremona):
Replying to [comment:53 jdemeyer]:
> Thanks for the info.
>
> Interesting, it looks like the `gcd()` computation in `mult()` takes so
much time. I would assume that some kind of coefficient explosion occurs.
I think that the real point here is http://trac.sagemath.org/ticket/18461
which re-implemented univariate polynomial gcd! So it is possible that
without any of the changes on this ticket or #18611 we would have seen
anoticeable improvement. Anyway, between these two tickets we certainly
have more efficient code so the exercise was worth carrying out. Thanks!
--
Ticket URL: <http://trac.sagemath.org/ticket/18589#comment:54>
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