#13032: Add ccache as an optional spkg
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Reporter: rohana | Owner: GeorgSWeber
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.4
Component: build | Resolution:
Keywords: sd40.5 | Work issues:
Report Upstream: N/A | Reviewers:
Authors: R. Andrew Ohana | Merged in:
Dependencies: | Stopgaps:
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Comment (by robertwb):
Replying to [comment:37 ppurka]:
> Unfortunately, ccache doesn't help very much in the compilation of a new
Sage tarball. Most of the time is taken up by ATLAS. I have a failed build
of 5.4.rc4 here that failed at ATLAS, after a total compilation time of
just over 3 hours.
> {{{
> real 187m47.272s
> user 236m57.749s
> sys 12m48.248s
> Error building Sage.
> make: *** [build] Error 1
> 14218.03s user 771.96s system 133% cpu 3:07:48.73 total
> }}}
>
> EDIT: In comparison, a successful build of sage (make build) takes just
over 4 hours.
Just to check, cchache is shared across sage builds, right?
Regarding ATLAS, ideally most people will either be using a system build
or match one of the pre-shipped tuning parameters.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13032#comment:40>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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