#15549: Streamline construction of PARI objects
-------------------------------------+-------------------------------------
Reporter: pbruin | Owner:
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-6.1
Component: interfaces | Resolution:
Keywords: pari performance | Merged in:
Authors: Peter Bruin | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/pbruin/15549-pari_gen_construction|
7a98efbcf2b16ae420cf5f7f05f9f39e0f3894ed
Dependencies: #15461 | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by pbruin):
* status: new => needs_review
* commit: => 7a98efbcf2b16ae420cf5f7f05f9f39e0f3894ed
Old description:
> Clean up the construction of PARI objects by inlining some functions and
> initialising the `_refers_to` dictionary only when necessary.
>
> Before:
> {{{
> sage: %timeit -r 1 pari(0)
> 1000000 loops, best of 1: 1.02 us per loop
> }}}
> After:
> {{{
> sage: %timeit -r 1 pari(0)
> 1000000 loops, best of 1: 875 us per loop
> }}}
New description:
Clean up the construction of PARI objects by inlining some functions and
initialising the `_refers_to` dictionary only when necessary.
Before:
{{{
sage: %timeit -r 1 pari(0)
1000000 loops, best of 1: 1.02 us per loop
}}}
After:
{{{
sage: %timeit -r 1 pari(0)
1000000 loops, best of 1: 875 ns per loop
}}}
--
Comment:
Replying to [comment:2 jdemeyer]:
> Are you sure the ticket description is right? If so, you '''slowed this
down''' by a factor of 858.
That was a typo; I don't know why I didn't simply copy-paste this...
----
Last 10 new commits:
||[[http://git.sagemath.org/sage.git/commit/?id=7a98efb|7a98efb]]||streamline
construction of PARI gen||
||[[http://git.sagemath.org/sage.git/commit/?id=5bb8f8d|5bb8f8d]]||remove
commented-out method gen.python()||
||[[http://git.sagemath.org/sage.git/commit/?id=3fa4f1d|3fa4f1d]]||remove
redundant methods from sage.libs.pari.gen||
||[[http://git.sagemath.org/sage.git/commit/?id=511f05b|511f05b]]||remove
global variable mytop||
||[[http://git.sagemath.org/sage.git/commit/?id=866f7fd|866f7fd]]||remove
methods sage.libs.pari.gen.*_unsafe||
||[[http://git.sagemath.org/sage.git/commit/?id=05b93b7|05b93b7]]||remove
"pbw" as an abbreviation for "prec_bits_to_words"||
||[[http://git.sagemath.org/sage.git/commit/?id=95a622a|95a622a]]||better
fix for real_double.pyx||
||[[http://git.sagemath.org/sage.git/commit/?id=11a3bfb|11a3bfb]]||more
fixes related to relocation of PariInstance||
||[[http://git.sagemath.org/sage.git/commit/?id=34013cc|34013cc]]||fixes
in sage.libs.pari||
||[[http://git.sagemath.org/sage.git/commit/?id=db8cd7e|db8cd7e]]||top-
level changes related to PariInstance||
--
Ticket URL: <http://trac.sagemath.org/ticket/15549#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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