#715: Parents probably not reclaimed due to too much caching
------------------------+---------------------------------------------------
Reporter: robertwb | Owner: somebody
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.8
Component: coercion | Keywords: weak cache coercion
Work_issues: | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #9138, #11900
------------------------+---------------------------------------------------
Comment(by SimonKing):
Replying to [comment:102 jpflori]:
> Testing sage.schemes with only one core gave me:
>
> * 1526.0 sec on vanilla
>
>
> * 1538.8 sec on vanilla +
[http://trac.sagemath.org/sage_trac/search/opensearch?q=ticket%3A715 #715]
That's very good news indeed!
> Running five tests of sage.schemes.elliptic_curves.padic_lseries gave
me:
>
> * 51.0, 48.7, 47.0, 47.0, 47.1 on vanilla
>
>
> * 49.0, 47.2, 48.4, 47.4, 47.7 on vanilla +
[http://trac.sagemath.org/sage_trac/search/opensearch?q=ticket%3A715 #715]
That looks like quite some randomness.
> My next step is to check for the memory leaks (same j invariant,
different j invariants, finite field example of Paul in
[http://trac.sagemath.org/sage_trac/search/opensearch?q=ticket%3A11521
#11521] ? or do that last one need a patch for the
[http://trac.sagemath.org/sage_trac/search/opensearch?q=wiki%3AHomSet
HomSet] cache ?
Yes, the finite field example is not solved:
{{{
sage: for p in prime_range(10^5):
....: K = GF(p)
....: a = K(0)
....:
sage: import gc
sage: gc.collect()
0
}}}
So, I am going to modify the ticket description of #11521, indicating that
the original elliptic curve example has been tackled here, but that there
remains an orthogonal problem.
> Afterward, I'll properly review your code and examples (that I've
already seen many times obviously :)).
Not so many times: Some examples are only in the very latest version of
the second patch.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:103>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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