#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 craigcitro):
This is pretty interesting: I get entirely different timings on my laptop,
which is why I didn't remove the NTL code. I wonder if something funky
went on with my FLINT compilation?
The `NTL` version:
{{{
sage: time b = delta_qexp(50000)
CPU times: user 0.50 s, sys: 0.02 s, total: 0.52 s
Wall time: 0.53 s
sage: time b = delta_qexp(100000)
CPU times: user 1.04 s, sys: 0.04 s, total: 1.08 s
Wall time: 1.15 s
sage: time b = delta_qexp(200000)
CPU times: user 2.08 s, sys: 0.09 s, total: 2.18 s
Wall time: 2.20 s
}}}
The `FLINT` version:
{{{
sage: time b = delta_qexp(50000)
CPU times: user 1.01 s, sys: 0.35 s, total: 1.36 s
Wall time: 1.37 s
sage: time b = delta_qexp(100000)
CPU times: user 2.08 s, sys: 0.70 s, total: 2.78 s
Wall time: 2.81 s
sage: time b = delta_qexp(200000)
CPU times: user 4.34 s, sys: 1.46 s, total: 5.80 s
Wall time: 5.88 s
}}}
That seems really weird ... I'm going to try looking at this tomorrow when
I'm sitting next to you. This is kinda weird; I'd like to do some random
timing comparisons.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6020#comment:3>
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