#18987: Parallel computation of number of solutions in dancing links
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Reporter: | Owner:
slabbe | Status: needs_review
Type: | Milestone: sage-6.9
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers: Vincent Delecroix
combinatorics | Work issues:
Keywords: | Commit:
Authors: | df655874d79c75f3d5b18adda01cedb620a1856b
Sébastien Labbé | Stopgaps:
Report Upstream: N/A |
Branch: |
public/18987 |
Dependencies: |
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Description changed by slabbe:
Old description:
> The following computation takes a lot of time:
>
> {{{
> sage: from sage.games.quantumino import QuantuminoSolver
> sage: QuantuminoSolver(0).number_of_solutions() # long time (several
> days)
> }}}
>
> but we can make it faster by doing the computation in parallel... This
> ticket does this.
>
> It also simplify the computation by avoiding to compute 4 times the same
> solution (obtained by rotation of angle pi of the 5x8x2 box).
New description:
The following computation takes a lot of time:
{{{
sage: from sage.games.quantumino import QuantuminoSolver
sage: QuantuminoSolver(0).number_of_solutions() # long time (several
days)
}}}
but we can make it faster by doing the computation in parallel... This
ticket does this (directly in the dancing links code).
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Ticket URL: <http://trac.sagemath.org/ticket/18987#comment:63>
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