#9562: Add M4RIE to Sage
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Reporter: malb | Owner: tbd
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.0
Component: packages | Keywords: m4ri
Author: Martin Albrecht | Upstream: None of the above - read trac
for reasoning.
Reviewer: | Merged:
Work_issues: |
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Comment(by malb):
Replying to [comment:29 drkirkby]:
> Whatever checks are being used to determine the cache size is not
working very well.
I disagree, it works fine as far as I know but it is slow. For your
machine I'd assume that 65536:8388608 indeed gives pretty good
performance. If you want to check whether this hunch is correct let me
know and I can tell you how to patch and test M4RI for various cache size
configurations.
> First it reports the L1 cache size is 0,
That's probably because I don't know how to ask Solaris for the right
information, however the tuning performed now is the better strategy
anyway.
> then it spends a couple of minutes on a 3.33 GHz Xeon, to determine the
cache size (I thought it had hanged).
Tuning takes a while as described above. Some shells don't seem to print
intermediate outputs, I don't know how to fix that. If you do, let me
know. Also, I couldn't get reliable information if I lowered the time
spent on tuning, if you have any ideas, let me know.
> It's also producing some NaN in the calculation of the cache size - is
that not a bug?
No, the delta from the first element with respect to the previous element
is not defined.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9562#comment:30>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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