#10763: Speedup of matrix multiplication
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Reporter: SimonKing | Owner: jason, was
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.6.2
Component: linear algebra | Keywords: matrix multiplication
Author: Simon King | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by SimonKing):
* status: needs_work => needs_review
Comment:
The problem was that the matrix spaces are cached with weak references. It
could happen that the key was still available, but `_cache[key]` was a
reference to `None`. So, in the updated patch I am not simply trying to
return `_cache[key]()` but I first test if it is not None.
Back to "needs review"...
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10763#comment:3>
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