#6020: [with patch, needs work] bug in delta_qexp over finite fields
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Reporter: AlexGhitza | Owner: craigcitro
Type: defect | Status: new
Priority: major | Milestone: sage-4.0
Component: modular forms | Keywords: delta q-expansion finite field
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Comment(by davidloeffler):
On my 32-bit Linux laptop, I get these timings:
With NTL:
{{{
sage: sage: time b = delta_qexp(50000)
CPU times: user 0.95 s, sys: 0.04 s, total: 0.99 s
Wall time: 1.01 s
sage: sage: time b = delta_qexp(100000)
CPU times: user 2.03 s, sys: 0.04 s, total: 2.06 s
Wall time: 2.08 s
sage: sage: time b = delta_qexp(200000)
CPU times: user 4.46 s, sys: 0.13 s, total: 4.59 s
Wall time: 4.91 s
}}}
With FLINT, i.e. with the "if False" hack:
{{{
sage: sage: time b = delta_qexp(50000)
CPU times: user 0.76 s, sys: 0.07 s, total: 0.83 s
Wall time: 0.85 s
sage: sage: time b = delta_qexp(100000)
CPU times: user 1.62 s, sys: 0.16 s, total: 1.78 s
Wall time: 1.79 s
sage: sage: time b = delta_qexp(200000)
CPU times: user 3.50 s, sys: 0.40 s, total: 3.91 s
Wall time: 4.03 s
}}}
So FLINT is faster for me (but not by so much as for William).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6020#comment:4>
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