#10941: ModularSymbols(4727).cuspidal_submodule().decomposition() fails
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Reporter: nbruin | Owner: craigcitro
Type: defect | Status: needs_info
Priority: major | Milestone: sage-5.0
Component: modular forms | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Changes (by davidloeffler):
* status: new => needs_info
Comment:
This ticket puzzles me. On my research group's Sage box (not as powerful
as sage.math but less heavily loaded, thus faster in practice),
{{{ModularSymbols(N).cuspidal_subspace().decomposition()}}} takes so long
even for {{{N = 500}}} or so that it's somehow not even conceivable that
it could finish in any reasonable time for {{{N = 4727}}}. I tried, and
it's been running for 16 hours, and I haven't managed to reproduce the
above error but nor is there any sign of it terminating!
I'm tempted to suggest we close this as "worksforme" unless we can
reproduce the failure; but I can't help wondering how this was initially
spotted -- has there been some massive speed regression, so the
computation was feasible in Sage as of 7 months back?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10941#comment:2>
Sage <http://www.sagemath.org>
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