#6020: [with plan, needs patch] bug in delta_qexp over finite fields
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Reporter: AlexGhitza | Owner: craigcitro
Type: defect | Status: new
Priority: major | Milestone: sage-4.0.1
Component: modular forms | Keywords: delta q-expansion finite field
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Comment(by craigcitro):
I'm going to fix this soon, at SD15 if not before. (Me giving three talks
during SD15 may prevent it from happening before.)
Here's the status, though: we've discovered that on 64-bit OSX and on
`sage.math`, it's much faster to just call the naive code (the `else`
clause in the patch above. However, it's '''slower''' on 32-bit OSX. So I
looked at the code a little more, and we're spending a fair amount of time
doing silly things (coercion, poor use of truncation, etc.). So I'm going
to make a new ticket with some fixes/additions to the polynomial code, and
then rewrite this patch to use these improvements. I suspect that it'll
beat the old code on all architectures in that case (I'm basing this on
some rough timings on my laptop), in which case we're all set.
I'm changing the status to something slightly snarky to summarize the
above. :)
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6020#comment:6>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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