#9944: categories for polynomial rings
--------------------------------------------+-------------------------------
Reporter: robertwb | Owner: nthiery
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: categories | Resolution:
Keywords: | Work_issues:
Upstream: N/A | Reviewer: Nicolas M.
Thiéry, Mike Hansen, Martin Raum
Author: Robert Bradshaw, Simon King | Merged:
Dependencies: |
--------------------------------------------+-------------------------------
Comment(by SimonKing):
Sorry, my fault. I did not restart before doing the test above, so, rings
were found in the cache.
After restart with all patches, I get
{{{
sage: S = GF(9,'a')
sage: %time S = PolynomialRing(S,'w')
CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
Wall time: 0.01 s
sage: %time S = PolynomialRing(S,'w')
CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
Wall time: 0.01 s
sage: %time S = PolynomialRing(S,'w')
CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
Wall time: 0.01 s
sage: %time S = PolynomialRing(S,'w')
CPU times: user 0.01 s, sys: 0.00 s, total: 0.01 s
Wall time: 0.01 s
sage: %time S = PolynomialRing(S,'w')
CPU times: user 0.02 s, sys: 0.00 s, total: 0.02 s
Wall time: 0.03 s
sage: %time S = PolynomialRing(S,'w')
CPU times: user 0.09 s, sys: 0.00 s, total: 0.09 s
Wall time: 0.10 s
sage: %time S = PolynomialRing(S,'w')
CPU times: user 0.22 s, sys: 0.00 s, total: 0.22 s
Wall time: 0.22 s
sage: %time S = PolynomialRing(S,'w')
CPU times: user 0.70 s, sys: 0.00 s, total: 0.70 s
Wall time: 0.70 s
sage: %time S = PolynomialRing(S,'w')
CPU times: user 2.58 s, sys: 0.00 s, total: 2.58 s
Wall time: 2.58 s
}}}
I found that the problem comes up with
[attachment:trac9944-polynomial_speedup.patch]. So, let's work on it.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9944#comment:50>
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