#11587: update Cremona's tables for Sage
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Reporter: was | Owner: cremona
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-4.7.2
Component: elliptic curves | Keywords:
Work_issues: | Upstream: N/A
Reviewer: John Cremona | Author:
Merged: | Dependencies:
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Changes (by cremona):
* status: needs_review => needs_info
* reviewer: => John Cremona
Comment:
I have a few questions. Also since I do not know SQLITE and do not have
the time to learn it just for this, the code will need to be reviewed by
someone else.
There are two spkgs at the link, and one patch on this ticket. Please can
you explain how they are related? Is one of the spkgs intended to be part
of the standard Sage distribution so that every copy of Sage has the mini-
database, as is the case now? And is the other one a replacement for the
optional large database?
Secondly, you warn that the database takes some time to create. Is this
once-only time which you had to spend in creating the database which is
part of the spkg, or is it time which must be spent by anyone installing
the large optional spkg?
To test this, I assume that the following steps are necessary; please
correct me if I am wrong.
1. apply patches at #11642
2. apply the patch here (trac_11587.patch)
3. sage -b
4. sage -i http://wstein.org/home/ohanar/cremona-
database/elliptic_curves-0.2.spkg
5. sage -b, test everything works
6. sage -i http://wstein.org/home/ohanar/cremona-
database/database_cremona_ellcurve-20110801.spkg
7. sage -b, test everything still works
Lastly: I expect that at regular intervals over the next few months I
will be releasing updates to the database (for example, the range
170k=180k is about 70% done already). Please leave rather clear
instructions for what to do for future updates; in particular, will it be
neceaary to rebuild everything, or just to read in the new files (e.g.
*.170000-179999 next time)?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11587#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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