#8614: Optimize creation of modular symbols spaces by speeding up quotienting
out
by 2-term relations
-----------------------------+----------------------------------------------
Reporter: was | Owner: craigcitro
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-4.6.2
Component: modular forms | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by davidloeffler):
According to the profiler, that difference seems to be coming almost
entirely from the optimizations to {{{binomial}}}. The much larger chunk
of new code in {{{relation_matrix.pyx}}} code only gets called when (among
other conditions) the base ring is the rationals; and it doesn't seem to
make much of an impact on the speed.
I suggest we split this into two tickets: one for the changes to binomial
and the other miscellaneous fixes, which I would be happy to give a
positive review to on the spot, and the other for the cythonization of the
2-term relations stuff, which seems a bit less clear-cut to me.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8614#comment:7>
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