#10558: ModularSymbols got much slower since sage 4.3
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Reporter: mderickx | Owner: craigcitro
Type: defect | Status: new
Priority: major | Milestone: sage-4.6.2
Component: modular forms | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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These tests were both performed in about the same moment on sage.math
{{{
----------------------------------------------------------------------
| Sage Version 4.3, Release Date: 2009-12-24 |
| Type notebook() for the GUI, and license() for information. |
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sage: time ModularSymbols(Gamma1(47),sign=1)
CPU times: user 0.81 s, sys: 0.14 s, total: 0.95 s
Wall time: 0.95 s
Modular Symbols space of dimension 115 for Gamma_1(47) of weight 2 with
sign 1 and over Rational Field
sage: time ModularSymbols(Gamma1(97),sign=1)
CPU times: user 8.59 s, sys: 3.32 s, total: 11.91 s
Wall time: 11.91 s
Modular Symbols space of dimension 440 for Gamma_1(97) of weight 2 with
sign 1 and over Rational Field
sage: time ModularSymbols(Gamma1(next_prime(150)),sign=1)
CPU times: user 46.75 s, sys: 19.66 s, total: 66.41 s
Wall time: 66.41 s
Modular Symbols space of dimension 1025 for Gamma_1(151) of weight 2 with
sign 1 and over Rational Field
sage:
}}}
{{{
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| Sage Version 4.6, Release Date: 2010-10-30 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: time ModularSymbols(Gamma1(47),sign=1)
CPU times: user 2.57 s, sys: 0.00 s, total: 2.57 s
Wall time: 2.61 s
Modular Symbols space of dimension 115 for Gamma_1(47) of weight 2 with
sign 1 and over Rational Field
sage: time ModularSymbols(Gamma1(97),sign=1)
CPU times: user 39.48 s, sys: 0.02 s, total: 39.50 s
Wall time: 39.50 s
Modular Symbols space of dimension 440 for Gamma_1(97) of weight 2 with
sign 1 and over Rational Field
sage: time ModularSymbols(Gamma1(next_prime(150)),sign=1)
CPU times: user 228.80 s, sys: 0.09 s, total: 228.89 s
Wall time: 228.89 s
Modular Symbols space of dimension 1025 for Gamma_1(151) of weight 2 with
sign 1 and over Rational Field
sage:
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10558>
Sage <http://www.sagemath.org>
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