#10815: Matrix multiplication and power are very slow
-------------------------------------+-------------------------------------
Reporter: frieux | Owner: jason, was
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-
Component: linear algebra | duplicate/invalid/wontfix
Keywords: matrix, | Resolution:
multiplication, slow | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #15944 | Stopgaps:
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Changes (by tmonteil):
* dependencies: => #15944
Comment:
@rws: this is not related to printing, but to the fact that `RR` privides
emulated floating-point arithmetics (by MPFR), which is inherently slower
than CPU implementation provided by `RDF`. Moreover, some optimized
libraries (like atlas) require CPU doubles to work with, and are not used
in such a case.
I was the one surprised by Frederic's timings. As @kcrisman, i think there
is still an issue about misleadingly using `RR` as the default
implementation of real floating point (which seems to come from its
generic name).
This documentation issue should be fixed by the forthcomig tutorial
#15944.
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Ticket URL: <http://trac.sagemath.org/ticket/10815#comment:7>
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