#12103: Use MeatAxe as an optional back end for dense matrices over `GF(p^n)`, p
odd, n>1, `p^n<255`
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Reporter: SimonKing | Owner: jason, was
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: packages: | Resolution:
experimental | Merged in:
Keywords: linear algebra, | Reviewers:
MeatAxe | Work issues:
Authors: Simon King | Commit:
Report Upstream: None of the above | 4bdd285cd6320851aa4ed7aee8fb820960005692
- read trac for reasoning. | Stopgaps:
Branch: |
u/SimonKing/meataxe |
Dependencies: #19240 |
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Comment (by SimonKing):
The implementation of `_matrix_times_matrix_` is now inherited from
`sage.matrix.matrix0`, i.e., instead of overriding it I created a method
`_strassen_default_cutoff` that returns 0 (which means that Strassen-
Winograd is used for all matrices).
Also, I have wrapped the computation of echelon form. Meataxe only
computes a semi-echelon form. Thus, I need to work a little harder to get
the reduced row echelon form. Again, it is a lot faster than what
currently is in Sage for nonprime finite fields of odd order.
--
Ticket URL: <http://trac.sagemath.org/ticket/12103#comment:105>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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