#10508: Update ATLAS to stable version 3.10
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Reporter: vbraun | Owner: tbd
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.3
Component: packages | Resolution:
Keywords: ATLAS | Work issues:
Report Upstream: N/A | Reviewers: Benjamin Jones
Authors: Volker Braun | Merged in:
Dependencies: sage-5.2.beta0 | Stopgaps:
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Comment (by leif):
Replying to [comment:63 jdemeyer]:
> Timing on x86_64 with `SAGE_FAT_BINARY=yes` on sage.math:
> {{{
> real 139m50.733s
> user 134m30.710s
> sys 7m12.390s
> Successfully installed atlas-3.8.4.p1
> }}}
> {{{
> real 350m5.662s
> user 330m23.460s
> sys 22m1.010s
> Successfully installed atlas-3.10.0
> }}}
> Why does the new ATLAS take so much longer to build than the old one?
I can beat that:
{{{
Finished installing shared ATLAS library.
real 821m14.881s
user 739m58.560s
sys 58m23.440s
Successfully installed atlas-3.10.0
}}}
(That's with `sage -f ...` on an otherwise idle machine, an AMD Fusion
E-450 running Ubuntu 10.04.4 LTS x86_64.)
It took far more time than building ''all of Sage'' [in parallel, on that
dual-core CPU], including the old ATLAS spkg. I currently have no figures
for a ''separate'' ATLAS 3.8.4 build, but the timings from previous
parallel Sage builds on that machine vary between
{{{
real 214m52.096s
user 175m5.390s
sys 9m56.210s
Successfully installed atlas-3.8.4.p1
}}}
and
{{{
real 256m32.949s
user 217m30.760s
sys 10m31.050s
Successfully installed atlas-3.8.4.p1
}}}
(The LAPACK and BLAS spkg build times in these builds are a few minutes
and less than one minute [wall time], respectively.)
I was actually hoping ATLAS 3.9.x / 3.10 meanwhile "knows" these AMD CPUs
and therefore builds at least a bit ''faster''...
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10508#comment:64>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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