#9798: Accelerate Polyhedron constructor and fix cddlib output ordering
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Reporter: vbraun | Owner: mhampton
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.6
Component: geometry | Keywords:
Author: Volker Braun | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by dimpase):
Replying to [comment:9 vbraun]:
> OK good, I've removed the logging and put the (hopefully final) version
of the spkg at the usual place
>
> http://www.stp.dias.ie/~vbraun/Sage/spkg/cddlib-094f.p8.spkg
>
> I agree that, in general, the dual description is the time-consuming
part. However I have encountered a special case where it was the other way
round. I don't know if its an implementation issue or just a weird case,
as far as I remember it was a high-dimensional polytope with few facets
but ~1500 vertices.
Hmm, are you saying that computing facets for a polytope with 1500
vertices is faster than computing the vertex adjacencies?
Shouldn't this at least be reported upstream?
>
> In any case, the new spkg seems to fix the OSX problem and, hopefully,
someone will step up and review it :-)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9798#comment:10>
Sage <http://www.sagemath.org>
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