#20693: Sage crashes when computing newforms
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Reporter: ehlen | Owner:
Type: defect | Status: new
Priority: critical | Milestone: sage-7.3
Component: modular forms | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by pbruin):
Replying to [comment:4 ehlen]:
> I would like to add a remark: something really extremely bad happened
with the implementation of relative Number Fields.
> It was always slow but now, and this might be related to this crash
here, spaces that I computed using older versions of sage (6.1 to be
concrete and give a pointer) within minutes or up to an hour or a bit
more, do not finish to be computed within a day now. A concrete example is
Gamma0(19), character {{{[zeta18^2]}}}, weight 14. I had the modular
symbols space computed with sage 6.1 and stored the cputime used to
compute it: 3780s. And now it didn't finish within 7 hours.
With the same branches applied as in comment:18, I tried
{{{
%prun Newforms(DirichletGroup(19)[2], 14, names='a')
}}}
and got a similar NTL crash as in comment:17 after about 1.5 hours.
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Ticket URL: <http://trac.sagemath.org/ticket/20693#comment:19>
Sage <http://www.sagemath.org>
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