#9138: Categories for all rings
--------------------------+-------------------------------------------------
Reporter: jbandlow | Owner: nthiery
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.7
Component: categories | Keywords: introspection, categories for rings
Author: Simon King | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by SimonKing):
To be on the safe side, I repeated timings with the latest patch from
here, applied only on top of #9944:
{{{
$ ./sage -startuptime
...
== Slowest (including children) ==
1.396 sage.all (None)
0.398 sage.misc.all (sage.all)
0.285 functional (sage.misc.all)
0.282 sage.schemes.all (sage.all)
0.271 sage.rings.complex_double (functional)
...
}}}
and
{{{
sage: B.<t> = PolynomialRing(Integers(125))
sage: R = monsky_washnitzer.SpecialCubicQuotientRing(t^3 - t + B(1/4))
sage: P = R.poly_ring()
sage: x, T = R.gens()
sage: timeit('x*T')
625 loops, best of 3: 869 µs per loop
}}}
Without all these patches, I get
{{{
$ ./sage -startuptime
...
== Slowest (including children) ==
1.282 sage.all (None)
0.284 sage.schemes.all (sage.all)
0.241 sage.misc.all (sage.all)
0.184 twisted.persisted.styles (sage.all)
0.165 elliptic_curves.all (sage.schemes.all)
...
}}}
and
{{{
sage: B.<t> = PolynomialRing(Integers(125))
sage: R = monsky_washnitzer.SpecialCubicQuotientRing(t^3 - t + B(1/4))
sage: P = R.poly_ring()
sage: x, T = R.gens()
sage: timeit('x*T')
625 loops, best of 3: 501 µs per loop
}}}
I think the timing of the startup time is within the error margin. But
there is a slow-down of the Monsky-Washnitzer code. I have shown how to
solve the latter problem, based on #11115.
I leave the decision to the reviewer whether or not #11115, together with
a patch that puts a cached_method decorator in front of the modulus
method, should be a dependency for this ticket.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9138#comment:40>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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